EP4154752A1 - Extendable comfort link - Google Patents
Extendable comfort link Download PDFInfo
- Publication number
- EP4154752A1 EP4154752A1 EP21199004.9A EP21199004A EP4154752A1 EP 4154752 A1 EP4154752 A1 EP 4154752A1 EP 21199004 A EP21199004 A EP 21199004A EP 4154752 A1 EP4154752 A1 EP 4154752A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bracelet
- slide
- frame
- length adjustment
- central
- 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
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Classifications
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/02—Link constructions
- A44C5/04—Link constructions extensible
- A44C5/08—Link constructions extensible having separate links
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/02—Link constructions
- A44C5/10—Link constructions not extensible
- A44C5/107—Link constructions not extensible with links made of more than two elements including connecting elements
Definitions
- the present invention relates to the field of watchmaking and jewelry, and in particular to bracelet links.
- the useful length adjustment devices are most of the time integrated directly into a clasp, for example a clasp with a folding clasp. The adjustment is then generally made in the open position of the clasp.
- the patent application EP3744209A thus discloses, for example, a bracelet with elastic links of particular structure using prestressed springs arranged between two hinge rods between central links and side links, and whose triggering threshold is defined by the weight of the bracelet itself.
- the stroke of each link is however limited to less than one millimeter, which requires on the one hand the arrangement of a large number of links to obtain a sufficient automatic adjustment range for the elongation of the bracelet.
- this solution requires a very particular arrangement of elastic elements capable of extending along the curvature of each central link, which significantly increases the manufacturing costs.
- a drawback of this type of device is that it is relatively bulky and complex to mount; moreover, the elastic elements are not completely hidden under the blades of the folding clasp, which exposes them to pinching during the extension and retraction phases of the spring, the maximum stroke of which is relatively long. Then, the fact that the springs are not hermetically covered from below the clasp on the outside of the blades easily allows dust or other skin or rubber debris to penetrate under the clasp and thus deteriorate the proper functioning of the elastic adjustment mechanism. Finally, the constraints exerted in torsion on the spring to follow the curvature of the cover of the clasp are also disadvantageous in ensuring long-lasting performance in terms of reliable holding forces around the user's wrist.
- An object of the present invention is to provide an alternative fine-tuning solution for a bracelet, which increases wearing comfort without requiring any operation by the wearer of the bracelet.
- Yet another object of the present invention is to provide a solution for fine adjustment of the length of a bracelet whose reliability is guaranteed over time.
- an automatic length adjustment device for a bracelet comprising a frame articulated around a first fixing axis and a connecting element articulated around a second fixing axis, characterized in that that the connecting element is connected to said frame by means of at least one elastic element and a slide, the elastic element being arranged longitudinally in a longitudinal insertion orifice passing through the slide.
- Another advantage of the proposed solution relates to cost reduction, since it is possible to use standard springs.
- Yet another advantage relates to the ease of integration into a standard link bracelet as an inter-segment element, or even into any other type of bracelet, for example, made of elastomer or leather, close to the clasp.
- the automatic length adjustment device for bracelet according to the invention is characterized in that a housing is arranged in a central part of the frame to receive the slide which has a shape whose cross section corresponds to that of the housing of the frame, and is slidably mounted relative to the latter.
- the device is completely invisible when the springs are not stretched, the slide fitting inside the frame replacing a link. Furthermore, the sliding movement of the slide is guided according to a single degree of freedom due to the correspondences of shape between the slide and the housing of the frame without having to require additional guide elements for this, which increases comfort on the to carry.
- the automatic bracelet length adjustment device is characterized in that the slide is fixed to the connecting element.
- the slide is configured as a simple extension of the male-type connecting element which is inserted into a female part of the frame constituted by its internal central housing, and the level of prominence of the slide outside the frame easily indicates the level length adjustment.
- the automatic length adjustment device is characterized in that the slider is inserted into an opening of a central attachment piece of the connecting element, and fixed to the central attachment piece using a first bar, and that the elastic element is fixed on the one hand to the slide via a second bar, and to the frame via a third bar.
- the automatic bracelet length adjustment device is characterized in that the slideway moves along a rectilinear course between a rest position and a position of maximum extension.
- the stroke of the device for automatic length adjustment for bracelet according to the invention is between 3 mm and 5 mm.
- the automatic bracelet length adjustment device is characterized in that the slide is moreover provided with an elastic pawl oriented vertically and arranged to be inserted into a groove central whose front end forms an abutment surface limiting the travel of the slide.
- the automatic bracelet length adjustment device is characterized in that the elastic pawl is removably inserted into a vertical housing of the slide.
- the device proposed for the extension of the size of the bracelet is of extremely simple and modular construction, which easily allows the replacement of the pawl only and not of the slide in its entirety, in particular within the framework of an after-sales service. of the proposed comfort link.
- the device for automatic length adjustment for bracelet according to the invention is characterized in that the elastic element or elements are arranged to exert a restoring force of between 5 and 10 Newton. In this way, wearing comfort is optimal because the strength of the strap around the wrist is always sufficient to prevent any slippage.
- the automatic length adjustment device for bracelet according to the invention is characterized in that the slide has a first longitudinal cylindrical through hole intended to receive a first elastic element and a second longitudinal through hole cylindrical intended to receive a second elastic element arranged symmetrically with respect to the longitudinal axis of the slide.
- the doubling thus proposed of the elastic elements makes it possible to minimize the stresses on each of them during each adjustment of the length of the bracelet and thus to further increase the service life of the proposed automatic adjustment mechanism.
- Another object of the present invention is to provide a bracelet solution that emulates the comfort of elastomer or leather, for example, in terms of elasticity, but while retaining the appearance of a rigid metal bracelet.
- a bracelet comprising a series of central links and lateral links articulated with respect to one another, and which further comprises an automatic length adjustment device according to one of the claims previous ones, characterized in that the connecting element comprises a central attachment part connected to a first lateral link and a second lateral link by means of a first bar.
- An advantage of such a solution is that it makes it possible to very easily integrate the automatic length adjustment device proposed in the context of the present invention into a traditional bracelet with metal links.
- the central attachment piece has a shape corresponding to a central half-link.
- the integration of the adjustment mechanism is carried out as transparently as possible vis-à-vis the other links of the bracelet.
- the frame of the automatic length adjustment device has a first length substantially equal to a second length corresponding to that of the side links.
- This variant also advantageously further conceals the automatic length adjustment device, the frame then fictitiously replacing a central link, and making the location of the automatic length adjustment device almost imperceptible to the naked eye.
- the slide has a shape corresponding to that of a housing arranged in a central part of the frame, extending over a first width substantially corresponding to that of the central links of the bracelet, and over a third length less than or equal to the first length of the frame, so as to be able to lodge entirely in the housing of the frame and not visually generate an intermediate segment, during the extension of the length, which does not either not particularly conspicuous or unattractive compared to the rest of the bracelet.
- the travel between a rest position and a position of maximum extension of the slide is defined as being substantially equal to half of a fourth length of a link central.
- the bracelet is composed of metal links and the automatic length adjustment device is completely hidden in the bracelet, and the dimensions of the elements constituting the bracelet correspond to those of the articulated links of the bracelet.
- the integration of the device is optimal both from an aesthetic and functional point of view, since the best possible performance in terms of automatic adjustment capacity is guaranteed using a modular device that can easily be integrated in a bracelet, and more particularly between the end of a strand and a clasp.
- FIG. 1 is illustrates a three-dimensional view and from above of a bracelet part 100 in particular for a wristwatch which is articulated around central links 10, having a first width W 1 and a length Lo, as well as side links 12, having a second width W 2 as well as a second length L 2 .
- the automatic length adjustment device 17 of the bracelet is represented, on the figure 1 , in a retracted position Po corresponding to a position where the elastic elements that it comprises are not stressed in extension, and therefore at rest. In this position, this device is entirely hidden in the bracelet and moreover, the ratio between the length L 0 of the central links and the first length L 1 of a frame 7 replacing a central link 10, is calculated in such a way that it goes the most visually unnoticed; in this figure, this ratio between L 1 and L 0 is approximately 1.5.
- the frame 7 preferably has a total width W equal to that of the bracelet 100, and has a central part 70 whose width corresponds to the first width W 1 of the central links 10, and side parts 72 whose width corresponds to the second width W 2 of the side links.
- the frame 7 is articulated around a first axis 9, which can connect it either to a clasp, or to other links of the bracelet 100, and its central part 70 is of parallelepipedal shape while its two lateral parts are of rounded like the side links 12 in order to visually integrate the automatic length adjustment device 17 as well as possible as an inter-segment element between consecutive links of the bracelet.
- This frame 7 is connected to a central attachment piece 11, the shape of which is rounded on one side and straight on the other, corresponds to a half-link of length Lo/2 so that in the extended position P 1 shown on the picture 2 next, when the length of the extension stroke C corresponding to the level of maximum extension of the length of the bracelet is chosen to preferably also correspond to a substantially equivalent length L 0 /2 then the length L 0 of a link is emulated central 10 complete.
- This attachment piece 11 is connected on either side to a first lateral link 12A and a second lateral link 12B via a first strip 2, the width of which corresponds to the total width W of the bracelet 100, to form an element of link 1, illustrated later on the picture 3 which constitutes an intermediate sub-assembly vis-à-vis the rest of the bracelet 100, to which it is articulated via a second axis 13, which also has a length equal to the total width W of the bracelet.
- the second axis 13 of articulation crosses the other ends of the first side link 12A and of the second side link 12B with respect to those crossed by the first bar 2, as well as one end of a central link 10, itself connected, via its other end , with two side links 12 of the bracelet 100.
- each of the first and second side links 12A and 12B respectively of the connecting element of the device automatic adjustment of the length 1 of the bracelet 100 correspond, in size and shape, to each of the side links 12 of the bracelet 100.
- the frame 7 At one end of the frame 7, arranged close to the first axis 9 of fixing and articulation of the latter vis-à-vis a clasp or other elements of the bracelet, there is a third strip 8 extending over the entire width of the frame 7 intended to retain one end of one or more elastic elements 6 (hidden in this figure and visible only from the picture 3 next, also putting the second strip 4 of attachment from their end opposite to the slide 3, on the figure 2 next, showing the automatic length adjustment device 17 in the extended position P 1 ).
- the attachment part 11 constitutes a kind of extension of the frame 7 in the retracted position P 0 or retracted where the entire mechanism used for the extension is thus almost invisible outside the AA demarcation line.
- the maximum extension stroke C is chosen as being preferably between 3mm and 5mm, which corresponds to an extension smaller than the size of a link of the bracelet (central or lateral, which have a length rather of l 6 to 9 mm), but nevertheless sufficient to be able to adapt to significant relative variations in the size of the wrist, in the event of substantial changes in terms of temperature and humidity in particular, while corresponding to a variation of longer than the standard indexing steps available in a clasp (generally less than 2mm).
- the proposed automatic length adjustment device guarantees continuous and instantaneous length adjustment according to need, for example in the event of a sudden temperature change, between a heated room and a particularly cold outdoor environment in winter, for example. .
- wearing comfort is optimized with the aid of a device that is not bulky and simple to integrate into a bracelet, the aesthetic appearance of which blends perfectly into the latter, and the adjustment properties of which are at the same time improved.
- This first bar 2 is also inserted into a first transverse fixing orifice 31 of the slide 3, so that the latter, moreover disposed in an insertion opening 111 of the attachment part 11, is thus secured to the connecting element 1, and fixed thereto without leaving any degree of mutual freedom.
- the slide 3 is also connected to the frame 7 via two elastic elements 6, that is to say a first elastic element 6A and a second elastic element 6B, of which a first end is fixed to the frame and the other end is fixed to the slide 3 via a second strip 4, the length of which is substantially equal to the first width W 1 of the central links 10, and inserted into a second transverse fixing hole 32.
- the first elastic element 6A has a first end 61A attached to the frame 7 via the third strip 8 and the second elastic element 6B also has a first end 61B attached to the frame 7 via the third strip 8, while the second end 62A of the first elastic element 6A as well as the second end 62B of the second elastic element 6B are attached to the slide 3 via the second bar 4 inserted into the second transverse fixing hole 32.
- each c one of the first and second elastic elements 6A and 6B respectively are each inserted into a first through longitudinal insertion hole 36A and a second through longitudinal insertion hole 36B; more generally the elastic element 6 is arranged in a longitudinal through insertion hole 36 of the slide 3, of corresponding shape, here cylindrical for a standard spiral spring, and this in such a way as to minimize the friction, the operating clearances, and thereby maximizing operating efficiency while at the same time reducing wear. Furthermore, such a configuration makes it possible to operate the slide like a drawer, the return mechanism of which is completely hidden. In this way, the elastic elements as well as more generally the inside of the proposed length adjustment device are completely protected vis-à-vis the outside.
- the arrow F materializing the return force exerted by the springs, the shape of which can be chosen as being completely standard, as well as the material, typically stainless steel.
- the manufacturing constraints are reduced to the maximum and the costs as well.
- the doubling of the elastic elements makes it possible to better distribute the stresses and to more easily adjust the intensity of the desired restoring force.
- the slide 3 also has a “stack” shape, that is to say with a front surface 34 as well as a flat rear surface 33, and a parallelepipedic side surface 35 rounded at the edges, with a semi-cylindrical envelope.
- the frame 7 has for its part a housing 71 of corresponding shape intended to receive the slide and which confines the latter to a rectilinear translation movement according to a single degree of freedom.
- the slide has a third length L 3 preferably substantially equal to the first length L 1 of the frame.
- an elastic pawl 5 intended to be integrated into the slide 3, and parallel in a central longitudinal groove 73 of the frame, at the bottom of the housing 71 provided for the slide 3.
- This central groove 73 has a front stop 73B, visible on the picture 3 , as well as a rear stop 73A, visible on the figure 4 , the space between the front stop 73B and the rear stop 73A defining the extension stroke C of the slide 3 and thus the maximum possible extension level.
- the elastic pawl 5 has a cylindrical body 50 inserted in a vertical pawl housing 37 arranged at the bottom of the slide 3, and an elastic stud 51 intended to be inserted into the central groove 73 of the housing 70 of the frame 7.
- FIGS. 5A and 5B correspond to views in sagittal section along the BB axis visible on the picture 3 above and which constitutes an axis of symmetry for the automatic length adjustment device 17 proposed.
- FIG 5A illustrates this device in the retracted position Po corresponding to the figure 1
- the figure 5B corresponds to the extended position P 1 corresponding to the figure 2 .
- the slide 3 is fixed in the insertion opening 111 via the first bar 2 which is inserted in the first transverse fixing hole 31, and is connected on the other hand to the elastic element 6; although it is a question here of the first and second elastic element 6A-6B, only the second elastic element 6B located behind the sagittal cutting plane BB is visible on the figures 5A and 5B .
- the elastic element 6 formed by the first and second elastic elements 6A and 6B respectively is fixed to the slide using the second bar 4 inserted into the second transverse fixing hole 32.
- the orifices and the fixing strips are jointly referenced for the sake of simplification and readability, hence the joint references “31/2” and “32/4” corresponding respectively to the first transverse fixing orifice 31 and the first strip 2, and the second transverse fixing hole 32 and the second strip 4.
- This pawl 5 simply associated with the slide 3 is removably fixed therein in order to constitute an easily replaceable wear part, separately from the other constituent elements of the proposed automatic length adjustment device; at the same time, it dispenses with any other part to be mounted on the frame to define a stop limiting the level of extension of the springs and consequently the maximum possible elongation of the length of the bracelet and thus contributes to making the proposed solution the most compact and the least voluminous possible.
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Abstract
La présente invention concerne un dispositif d'ajustement automatique de longueur (17) pour bracelet, comprenant un bâti (7) articulé autour d'un premier axe (9) de fixation et un élément de liaison (1) articulé autour d'un deuxième axe (13) de fixation, caractérisé en ce que l'élément de liaison (1) est relié au bâti (7) par l'intermédiaire d'au moins un élément élastique (6) et d'une glissière (3), l'élément élastique (6) étant disposé longitudinalement dans un orifice d'insertion longitudinal (36) de la glissière (3).The present invention relates to an automatic length adjustment device (17) for a bracelet, comprising a frame (7) articulated around a first fixing axis (9) and a connecting element (1) articulated around a second fixing pin (13), characterized in that the connecting element (1) is connected to the frame (7) via at least one elastic element (6) and a slider (3), the elastic element (6) being disposed longitudinally in a longitudinal insertion hole (36) of the slide (3).
Description
La présente invention se rapporte au domaine de l'horlogerie et de la joaillerie, et en particulier à des maillons de bracelets.The present invention relates to the field of watchmaking and jewelry, and in particular to bracelet links.
Dans le domaine de l'horlogerie notamment, on connaît depuis longtemps des dispositifs de réglage de la longueur utile d'un bracelet dans diverses positions correspondant à la taille du poignet de l'utilisateur. Pour des bracelets en cuir ou en plastiques, cela se fait usuellement en joignant deux brins de bracelets à l'aide de moyens de coopérations constitués par une boucle et un ardillon agencé sur un premier brin, l'ardillon étant inséré dans des trous agencés sur un deuxième brin qui est passé à travers l'ardillon.In the field of watchmaking in particular, devices for adjusting the useful length of a bracelet in various positions corresponding to the size of the user's wrist have been known for a long time. For leather or plastic bracelets, this is usually done by joining two bracelet strands using means of cooperation consisting of a buckle and a barb arranged on a first strand, the barb being inserted into holes arranged on a second strand which is passed through the barb.
Dans le cadre de bracelets en métal, constitué d'une pluralité de maillons articulés, les dispositifs de réglage de la longueur utile sont la plupart du temps intégrés directement dans un fermoir, par exemple un fermoir à boucle déployante. Le réglage s'effectue alors généralement en position ouverte du fermoir.In the context of metal bracelets, consisting of a plurality of articulated links, the useful length adjustment devices are most of the time integrated directly into a clasp, for example a clasp with a folding clasp. The adjustment is then generally made in the open position of the clasp.
La plupart de ces dispositifs de réglage posent toutefois des problèmes récurrents de réglage fin de la longueur du bracelet en raison de la nature discrète des positions de réglage et dont la granularité est définie par le crantage ou tout autre dispositif définissant des écarts minimaux entre deux positions de réglage consécutives.Most of these adjustment devices, however, pose recurring problems of fine adjustment of the length of the bracelet due to the discrete nature of the adjustment positions and the granularity of which is defined by the notching or any other device defining minimum differences between two positions. consecutive settings.
Ainsi, plus particulièrement pour des bracelets métalliques, on a recherché à obtenir des réglages complémentaires permettant d'effectuer un ajustement automatique de la longueur, par exemple à l'aide d'éléments élastiques permettant une adaptation de la longueur du bracelet selon les conditions d'usage de la montre, comme par exemple selon les conditions de température et d'humidité extérieures ayant une influence sensible sur le pourtour du poignet de l'utilisateur.Thus, more particularly for metal bracelets, it has been sought to obtain additional settings allowing automatic adjustment of the length, for example using elastic elements allowing adaptation of the length of the bracelet according to the conditions of use of the watch, such as according to temperature conditions and external humidity having a significant influence on the circumference of the user's wrist.
La demande de brevet
Dans le cadre de montres de plongée, on connaît par ailleurs des agencements d'éléments élastiques dans des fermoirs en vue d'ajuster la longueur du bracelet de la montre d'une part à la surépaisseur générer par la combinaison, et d'autre part aux variations de de pression selon la profondeur à laquelle s'effectue la plongée. Le document
Il existe par conséquent un besoin pour une solution d'ajustement exempte de ces limitations connues.There is therefore a need for an adjustment solution free from these known limitations.
Un but de la présente invention est de fournir une solution alternative d'ajustement fin pour un bracelet, qui augmente le confort au porter sans nécessiter aucune opération du porteur du bracelet.An object of the present invention is to provide an alternative fine-tuning solution for a bracelet, which increases wearing comfort without requiring any operation by the wearer of the bracelet.
Encore un autre but de la présente invention est de fournir une solution d'ajustement fin de la longueur d'un bracelet dont la fiabilité soit garantie au fil du temps.Yet another object of the present invention is to provide a solution for fine adjustment of the length of a bracelet whose reliability is guaranteed over time.
Selon l'invention, ces buts sont atteints grâce à un fermoir pour pièce d'horlogerie conformément aux caractéristiques de la revendication principale ; les caractéristiques des revendications dépendantes se rapportent à des modes de réalisation avantageux.According to the invention, these aims are achieved thanks to a clasp for a timepiece in accordance with the characteristics of the main claim; the features of the dependent claims relate to advantageous embodiments.
En particulier, ces buts sont atteints grâce à un dispositif d'ajustement automatique de longueur pour bracelet, comprenant un bâti articulé autour d'un premier axe de fixation et un élément de liaison articulé autour d'un deuxième axe de fixation, caractérisé en ce que l'élément de liaison est relié audit bâti par l'intermédiaire d'au moins un élément élastique et d'une glissière, l'élément élastique étant disposé longitudinalement dans un orifice d'insertion longitudinal traversant de la glissière.In particular, these objects are achieved thanks to an automatic length adjustment device for a bracelet, comprising a frame articulated around a first fixing axis and a connecting element articulated around a second fixing axis, characterized in that that the connecting element is connected to said frame by means of at least one elastic element and a slide, the elastic element being arranged longitudinally in a longitudinal insertion orifice passing through the slide.
Les avantages conférés par la solution proposés sont à la fois d'ordre esthétique et fonctionnel, puisque le mécanisme d'ajustement de la longueur est désormais intégralement caché, et ainsi plus robuste et de durée de vie augmentée en conséquence.The advantages conferred by the proposed solution are both aesthetic and functional, since the length adjustment mechanism is now fully hidden, and thus more robust and has a correspondingly increased lifespan.
Un autre avantage de la solution proposée concerne la diminution des coûts, puisqu'il possible d'employer des ressorts usuels.Another advantage of the proposed solution relates to cost reduction, since it is possible to use standard springs.
Encore un autre avantage concerne la facilité d'intégration dans un bracelet standard à maillons en tant qu'élément qu'inter-segment, on encore dans n'importe quel autre type de bracelet par exemple, en élastomère ou en cuir, à proximité du fermoir.Yet another advantage relates to the ease of integration into a standard link bracelet as an inter-segment element, or even into any other type of bracelet, for example, made of elastomer or leather, close to the clasp.
Selon un mode de réalisation préférentiel, le dispositif d'ajustement automatique de longueur pour bracelet selon l'invention est caractérisé en ce qu'un logement est aménagé dans une partie centrale du bâti pour recevoir la glissière qui a une forme dont la section transversale correspond à celle du logement du bâti, et est montée coulissante par rapport à ce dernier.According to a preferred embodiment, the automatic length adjustment device for bracelet according to the invention is characterized in that a housing is arranged in a central part of the frame to receive the slide which has a shape whose cross section corresponds to that of the housing of the frame, and is slidably mounted relative to the latter.
De cette manière, le dispositif est totalement invisible en lorsque les ressorts ne sont pas sollicités en extension, la glissière s'emboîtant à l'intérieur du bâti se substituant à un maillon. Par ailleurs, le mouvement de coulissement de la glissière est guidé selon un seul degré de liberté en raison des correspondances de forme entre la glissière et le logement du bâti sans devoir requérir d'éléments additionnels de guidage pour cela, ce qui augmente le confort au porter.In this way, the device is completely invisible when the springs are not stretched, the slide fitting inside the frame replacing a link. Furthermore, the sliding movement of the slide is guided according to a single degree of freedom due to the correspondences of shape between the slide and the housing of the frame without having to require additional guide elements for this, which increases comfort on the to carry.
Selon un autre mode de réalisation encore plus préférentiel, le dispositif d'ajustement automatique de longueur pour bracelet est caractérisé en ce que la glissière est fixée à l'élément de liaison. Ainsi, la glissière est configurée comme un simple prolongement de l'élément de liaison de type mâle venant s'insérer une partie femelle du bâti constitué par son logement central interne, et le niveau de proéminence de glissière en dehors du bâti indique aisément le niveau d'ajustement de la longueur.According to another even more preferred embodiment, the automatic bracelet length adjustment device is characterized in that the slide is fixed to the connecting element. Thus, the slide is configured as a simple extension of the male-type connecting element which is inserted into a female part of the frame constituted by its internal central housing, and the level of prominence of the slide outside the frame easily indicates the level length adjustment.
Selon un mode de réalisation encore plus préférentiel, le dispositif d'ajustement automatique de longueur selon l'invention est caractérisé en ce que la glissière est insérée dans une ouverture d'une pièce d'attache centrale de l'élément de liaison, et fixée à la pièce d'attache centrale à l'aide d'une première barrette, et que l'élément élastique est fixé d'une part à la glissière via une deuxième barrette, et au bâti via une troisième barrette.According to an even more preferred embodiment, the automatic length adjustment device according to the invention is characterized in that the slider is inserted into an opening of a central attachment piece of the connecting element, and fixed to the central attachment piece using a first bar, and that the elastic element is fixed on the one hand to the slide via a second bar, and to the frame via a third bar.
De cette manière, la fixation de la glissière à l'élément de liaison est dissociée de celle de l'élément élastique reliant la glissière au bâti, ce qui permet de rendre le montage plus modulaire et intuitif, ainsi que de minimiser les contraintes appliquées sur l'élément élastique.In this way, the fixing of the slide to the connecting element is dissociated from that of the elastic element connecting the slide to the frame, which makes it possible to make the assembly more modular and intuitive, as well as to minimize the stresses applied to the elastic element.
Selon un autre mode de réalisation préférentiel, le dispositif d'ajustement automatique de longueur pour bracelet selon l'invention est caractérisé en ce que la glissière se déplace selon une course rectiligne entre une position de repos et une position d'extension maximale.According to another preferred embodiment, the automatic bracelet length adjustment device according to the invention is characterized in that the slideway moves along a rectilinear course between a rest position and a position of maximum extension.
Ainsi, toute forme de contrainte en torsion est limitée sur l'élément élastique, ce qui augmente significativement la durée de vie de la solution proposée.Thus, any form of torsional stress is limited on the elastic element, which significantly increases the life of the proposed solution.
Selon un mode de réalisation particulièrement préféré, la course du dispositif d'ajustement automatique de longueur pour bracelet selon l'invention est comprise entre 3mm et 5mm. Ainsi, il est possible de ne réaliser l'ajustement de longueur souhaité que par l'intermédiaire d'un élément extensible unique conférant une plage d'ajustement suffisante pour garantir le confort au porter en toutes circonstances.According to a particularly preferred embodiment, the stroke of the device for automatic length adjustment for bracelet according to the invention is between 3 mm and 5 mm. Thus, it is possible to achieve the desired length adjustment only by means of a single extensible element conferring a sufficient range of adjustment to guarantee wearing comfort in all circumstances.
Selon un mode de réalisation encore plus préféré, le dispositif d'ajustement automatique de longueur pour bracelet selon l'invention est caractérisé en ce que la glissière est par ailleurs munie d'un cliquet élastique orienté verticalement et agencé pour s'insérer dans une rainure centrale dont l'extrémité avant forme une surface de butée limitant la course de la glissière.According to an even more preferred embodiment, the automatic bracelet length adjustment device according to the invention is characterized in that the slide is moreover provided with an elastic pawl oriented vertically and arranged to be inserted into a groove central whose front end forms an abutment surface limiting the travel of the slide.
De cette façon, la glissière est aisément retenue dans le bâti par l'intermédiaire d'un mécanisme de butée très simple et efficace, et est parallèlement fixée au bâti. Une telle configuration confère ainsi une excellente compacité et ergonomie au dispositif d'ajustement automatique de longueur proposé.In this way, the slide is easily retained in the frame by means of a very simple and effective abutment mechanism, and is fixed parallel to the frame. Such a configuration thus confers an excellent compactness and ergonomics with the proposed automatic length adjustment device.
Selon un mode de réalisation encore plus préférentiel, le dispositif d'ajustement automatique de longueur pour bracelet selon l'invention est caractérisé en ce que le cliquet élastique est inséré de façon amovible dans un logement vertical de la glissière. Ainsi, le dispositif proposé pour la rallonge de la taille du bracelet est de construction extrêmement simple et modulaire, ce qui permet aisément le remplacement du cliquet uniquement et non pas de la glissière dans son intégralité notamment dans le cadre d'un service après-vente du maillon confort proposé.According to an even more preferred embodiment, the automatic bracelet length adjustment device according to the invention is characterized in that the elastic pawl is removably inserted into a vertical housing of the slide. Thus, the device proposed for the extension of the size of the bracelet is of extremely simple and modular construction, which easily allows the replacement of the pawl only and not of the slide in its entirety, in particular within the framework of an after-sales service. of the proposed comfort link.
Selon encore un autre mode de réalisation préférentiel, le dispositif d'ajustement automatique de longueur pour bracelet selon l'invention est caractérisé en ce que le ou les éléments élastiques sont agencés pour exercer une force de rappel comprise entre 5 et 10 Newton. De cette manière, le confort au porter est optimal car la force de maintien du bracelet autour du poignet est toujours suffisante pour empêcher tout glissement.According to yet another preferred embodiment, the device for automatic length adjustment for bracelet according to the invention is characterized in that the elastic element or elements are arranged to exert a restoring force of between 5 and 10 Newton. In this way, wearing comfort is optimal because the strength of the strap around the wrist is always sufficient to prevent any slippage.
Selon encore un autre mode de réalisation préférentiel, le dispositif d'ajustement automatique de longueur pour bracelet selon l'invention est caractérisé en ce que la glissière comporte un premier orifice longitudinal traversant cylindrique destiné à recevoir un premier élément élastique et un deuxième orifice longitudinal traversant cylindrique destiné à recevoir un deuxième élément élastique agencés symétriquement par rapport à l'axe longitudinal de la glissière.According to yet another preferred embodiment, the automatic length adjustment device for bracelet according to the invention is characterized in that the slide has a first longitudinal cylindrical through hole intended to receive a first elastic element and a second longitudinal through hole cylindrical intended to receive a second elastic element arranged symmetrically with respect to the longitudinal axis of the slide.
Le dédoublement ainsi proposé des éléments élastiques permet de minimiser les contraintes sur chacun d'entre eux lors de chaque ajustement de la longueur du bracelet et d'ainsi encore augmenter la durée de vie du mécanisme d'ajustement automatique proposé.The doubling thus proposed of the elastic elements makes it possible to minimize the stresses on each of them during each adjustment of the length of the bracelet and thus to further increase the service life of the proposed automatic adjustment mechanism.
Un autre but de la présente invention est de fournir une solution pour bracelet émulant le confort de l'élastomère ou du cuir, par exemple, en termes d'élasticité, mais tout en conservant l'apparence d'un bracelet rigide en métal.Another object of the present invention is to provide a bracelet solution that emulates the comfort of elastomer or leather, for example, in terms of elasticity, but while retaining the appearance of a rigid metal bracelet.
Ce but est atteint en particulier à l'aide d'un bracelet comportant une série de maillons centraux et de maillons latéraux articulés les uns par rapport aux autres, et qui comprend par ailleurs un dispositif de réglage automatique de longueur selon l'une des revendications précédentes, caractérisé en ce que l'élément de liaison est comprend une pièce d'attache centrale reliée à un premier maillon latéral et un deuxième maillon latéral à l'aide d'une première barrette.This object is achieved in particular with the aid of a bracelet comprising a series of central links and lateral links articulated with respect to one another, and which further comprises an automatic length adjustment device according to one of the claims previous ones, characterized in that the connecting element comprises a central attachment part connected to a first lateral link and a second lateral link by means of a first bar.
Un avantage d'une telle solution est qu'elle permet d'intégrer très facilement le dispositif d'ajustement automatique de longueur proposé dans le cadre de la présente invention à un bracelet traditionnel à maillons en métal.An advantage of such a solution is that it makes it possible to very easily integrate the automatic length adjustment device proposed in the context of the present invention into a traditional bracelet with metal links.
Selon un mode de réalisation préférentiel d'un tel bracelet, la pièce d'attache centrale possède une forme correspondant à un demi-maillon central. Ainsi, l'intégration du mécanisme d'ajustement s'effectue de façon la plus transparente possible vis-à-vis des autres maillons du braceletAccording to a preferred embodiment of such a bracelet, the central attachment piece has a shape corresponding to a central half-link. Thus, the integration of the adjustment mechanism is carried out as transparently as possible vis-à-vis the other links of the bracelet.
Selon un mode de réalisation encore plus préférentiel pour un tel bracelet selon l'invention, le bâti du dispositif de réglage automatique de longueur possède une première longueur sensiblement égale à une deuxième longueur correspondant à celle des maillons latéraux.According to an even more preferred embodiment for such a bracelet according to the invention, the frame of the automatic length adjustment device has a first length substantially equal to a second length corresponding to that of the side links.
Cette variante dissimule encore avantageusement encore plus le dispositif de réglage automatique de la longueur, le bâti remplaçant alors fictivement un maillon central, et rendant l'emplacement du dispositif d'ajustement automatique de longueur quasiment imperceptible à l'œil nu.This variant also advantageously further conceals the automatic length adjustment device, the frame then fictitiously replacing a central link, and making the location of the automatic length adjustment device almost imperceptible to the naked eye.
Selon un mode de réalisation encore plus préférentiel pour un tel bracelet selon l'invention, dans lequel la glissière possède une forme correspondant à celle d'un logement aménagé dans une partie centrale du bâti, s'étendant sur une première largeur correspondant substantiellement à celle des maillons centraux du bracelet, et sur une troisième longueur inférieure ou égale à la première longueur du bâti, de manière à pouvoir loger intégralement dans le logement du bâti et ne générer visuellement un segment intermédiaire, lors de l'extension de la longueur, qui ne soit pas particulièrement voyant ou inesthétique par rapport au reste du bracelet.According to an even more preferential embodiment for such a bracelet according to the invention, in which the slide has a shape corresponding to that of a housing arranged in a central part of the frame, extending over a first width substantially corresponding to that of the central links of the bracelet, and over a third length less than or equal to the first length of the frame, so as to be able to lodge entirely in the housing of the frame and not visually generate an intermediate segment, during the extension of the length, which does not either not particularly conspicuous or unattractive compared to the rest of the bracelet.
Selon encore un mode de réalisation préférentiel pour le bracelet selon l'invention, la course entre une position de repos et une position d'extension maximale de la glissière est définie comme étant substantiellement égale à la moitié d'une quatrième longueur d'un maillon central.According to yet another preferred embodiment for the bracelet according to the invention, the travel between a rest position and a position of maximum extension of the slide is defined as being substantially equal to half of a fourth length of a link central.
De cette façon, il est possible de dissimuler au mieux le dispositif d'ajustement de la longueur quelle que soit le réglage nécessaire pour réaliser l'extension automatique de la longueur du bracelet, car il ne sera non seulement quasiment indécelable au repos, mais également lors de l'extension maximale où le niveau d'extension tendra à recréer un maillon central intégral complétant le demi-maillon central au niveau de la pièce d'attache centrale.In this way, it is possible to hide the length adjustment device as well as possible whatever the adjustment necessary to carry out the automatic extension of the length of the bracelet, because it will not only be almost undetectable at rest, but also during maximum extension where the level of extension will tend to recreate an integral central link completing the central half-link at the level of the central attachment part.
D'autres caractéristiques avantageuses ressortiront plus clairement de la description qui suit d'un mode de réalisation particulier de l'invention donné à titre d'exemple non limitatif et représenté par les dessins annexés, dans lesquels :
- la
figure 1 est une vue en trois dimensions de dessus d'une partie de bracelet pourvu d'un dispositif d'ajustement automatique de longueur selon un mode de réalisation préférentiel pour l'invention, lequel est représenté au repos ; - la
figure 2 est une vue en trois dimensions de dessus d'une partie de bracelet pourvu du dispositif d'ajustement automatique selon le monde de réalisation préférentiel illustré sur lafigure 1 , illustré désormais en position d'extension maximale ; - la
figure 3 est une vue éclatée en trois dimensions de dessus d'un dispositif d'ajustement automatique selon un mode de réalisation préférentiel pour l'invention ; - la
figure 4 est une vue éclatée en trois dimensions de dessous d'un dispositif d'ajustement automatique selon le mode de réalisation préférentiel pour l'invention illustré par lafigure 3 ; - Les
figures 5A et 5B sont des vues en coupe sagittale du dispositif d'ajustement automatique de longueur selon le mode de réalisation préférentiel illustré sur lesfigures 3 et 4 précédentes selon l'axe B-B, respectivement au repos et en position étendue.
- there
figure 1 is a top three-dimensional view of a bracelet part provided with an automatic length adjustment device according to a preferred embodiment for the invention, which is shown at rest; - there
figure 2 is a three-dimensional view from above of a bracelet part provided with the automatic adjustment device according to the preferential embodiment illustrated in thefigure 1 , now shown in fully extended position; - there
picture 3 - there
figure 4 is an exploded three-dimensional view from below of an automatic adjustment device according to the preferred embodiment for the invention illustrated by thepicture 3 - THE
figures 5A and 5B are sagittal sectional views of the automatic length adjustment device according to the preferred embodiment illustrated in thefigure 3 And4 preceding along the axis BB, respectively at rest and in the extended position.
Dans ce qui suit, on décrira un mode de réalisation préférentiel pour l'invention selon lequel le bracelet est composé de maillons en métal et le dispositif d'ajustement automatique de longueur est intégralement caché dans le bracelet, et les dimensions des éléments constitutifs du bracelet correspondent à celles des maillons articulés du bracelet. De cette manière, l'intégration du dispositif est optimale tant d'un point de vue esthétique que fonctionnelle, puisque les meilleures performances possibles en termes de capacité d'ajustement automatique sont garanties à l'aide d'un dispositif modulaire pouvant aisément être intégré dans un bracelet, et plus particulièrement entre l'extrémité d'un brin et un fermoir.In what follows, we will describe a preferred embodiment for the invention according to which the bracelet is composed of metal links and the automatic length adjustment device is completely hidden in the bracelet, and the dimensions of the elements constituting the bracelet correspond to those of the articulated links of the bracelet. In this way, the integration of the device is optimal both from an aesthetic and functional point of view, since the best possible performance in terms of automatic adjustment capacity is guaranteed using a modular device that can easily be integrated in a bracelet, and more particularly between the end of a strand and a clasp.
La
Le dispositif d'ajustement automatique de longueur 17 du bracelet est représenté, sur la
Le bâti 7 possède de préférence une largeur totale W égale à celle du bracelet 100, et possède une partie centrale 70 dont la largeur correspond à la première largeur W1 des maillons centraux 10, et des parties latérales 72 dont la largeur correspond à la deuxième largeur W2 des maillons latéraux. Le bâti 7 est articulé autour d'un premier axe 9, qui peut le relier soit à un fermoir, soit à d'autres maillons du bracelet 100, et sa partie centrale 70 est de forme parallélépipédique tandis que ses deux parties latérales sont de forme arrondie comme les maillons latéraux 12 afin d'intégrer visuellement du mieux possible le dispositif d'ajustement automatique de la longueur 17 en tant qu'élément inter-segment entre des maillons consécutifs du bracelet.The
Ce bâti 7 est relié à une pièce d'attache centrale 11, dont la forme est arrondie d'un côté et droite de l'autre, correspond à un demi-maillon de longueur Lo/2 de telle sorte qu'en position étendue P1 illustrée sur la
A une extrémité du bâti 7, disposée proche du premier axe 9 de fixation et d'articulation de celui-ci vis-à-vis d'un fermoir ou d'autres éléments du bracelet, se trouve une troisième barrette 8 s'étendant sur l'intégralité de la largeur du bâti 7 destinée à retenir une extrémité d'un ou plusieurs éléments élastiques 6 (cachés sur cette figure et visibles uniquement à partir de la
La
Les
Sur la gauche des
La glissière 3 est par ailleurs reliée au bâti 7 par l'intermédiaire de deux éléments élastiques 6, c'est-à-dire un premier élément élastique 6A et un deuxième élément élastique 6B, dont une première extrémité est fixée au bâti et l'autre extrémité est fixée à la glissière 3 via une deuxième barrette 4, dont la longueur est substantiellement égale à la première largeur W1 des maillons centraux 10, et insérée dans un deuxième orifice transversal de fixation 32. Plus exactement, le premier élément élastique 6A possède une première extrémité 61A attachée au bâti 7 via la troisième barrette 8 et le deuxième élément élastique 6B possède également une première extrémité 61B attachée au bâti 7 via la troisième barrette 8, tandis que la deuxième extrémité 62A du premier élément élastique 6A ainsi que la deuxième extrémité 62B du deuxième élément élastique 6B sont attachés à la glissière 3 via la deuxième barrette 4 insérée dans le deuxième orifice transversal de fixation 32. Par ailleurs, chacun des premier et deuxième éléments élastiques 6A et respectivement 6B sont insérés chacun dans un premier orifice longitudinal traversant d'insertion 36A et un deuxième orifice longitudinal traversant d'insertion 36B d'insertion; plus généralement l'élément élastique 6 est disposé dans un orifice longitudinal traversant d'insertion 36 de la glissière 3, de forme correspondante, ici cylindrique pour un ressort spiralé standard, et ce de manière à minimiser le frottements, les jeux de fonctionnement, et ainsi maximiser l'efficacité de fonctionnement tout en réduisant parallèlement l'usure. Par ailleurs, une telle configuration permet de faire fonctionner la glissière comme un tiroir dont le mécanisme de rappel est totalement caché. De cette façon, les éléments élastiques ainsi que plus généralement l'intérieur du dispositif d'ajustement de longueur proposé sont totalement protégés vis-à-vis de l'extérieur.The
Sur la
La glissière 3 possède par ailleurs une forme de « pile », c'est-à-dire avec une surface avant 34 ainsi qu'une surface arrière 33 plane, et une surface latérale 35 parallélépipédique arrondie sur les bords, avec une enveloppe hémicylindrique. Le bâti 7 possède quant à lui un logement 71 de forme correspondante destiné à recevoir la glissière et qui confine cette dernière à un mouvement de translation rectiligne selon un seul degré de liberté. La glissière possède une troisième longueur L3 de préférence sensiblement égale à la première longueur L1 du bâti.The
Sur la
Les
Sur la
Alors l'extrémité du deuxième élément élastique 6B qui est retenue par la deuxième barrette 4 est cachée, on peut distinguer, sur la droite des
Entre la position rentrée Po visible sur la figure et la position étendue P1 visible sur la
Bien que l'invention ait été décrite dans ce qui précède à l'aide d'un exemple destiné à une montre bracelet formée de maillons articulés en métal, on comprendra toutefois de ce qui suit que l'homme du métier pourrait envisager diverses variantes sans sortir du cadre de l'invention. En particulier, on pourra employer l'invention également dans le cadre d'une pièce de joaillerie, pourvue d'un fermoir ou non, et adapter les dimensions du dispositif proposé ainsi que son emplacement dans le bracelet selon les besoins.Although the invention has been described in the foregoing with the aid of an example intended for a wristwatch formed of articulated metal links, it will however be understood from what follows that the person skilled in the art could envisage various variants without depart from the scope of the invention. In particular, the invention can also be used in the context of a piece of jewelry, provided with a clasp or not, and the dimensions of the proposed device as well as its location in the bracelet can be adapted as required.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP21199004.9A EP4154752A1 (en) | 2021-09-24 | 2021-09-24 | Extendable comfort link |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP21199004.9A EP4154752A1 (en) | 2021-09-24 | 2021-09-24 | Extendable comfort link |
Publications (1)
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EP4154752A1 true EP4154752A1 (en) | 2023-03-29 |
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EP21199004.9A Pending EP4154752A1 (en) | 2021-09-24 | 2021-09-24 | Extendable comfort link |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2518507A (en) * | 1949-01-11 | 1950-08-15 | Kestenman Bros Mfg Co | Expansible band or bracelet |
US2744379A (en) * | 1954-12-09 | 1956-05-08 | Kestenman Bros Mfg Co | Expansible band with dual purpose latch |
US2848864A (en) * | 1957-02-13 | 1958-08-26 | Duchess Jewelry Mfg Corp | Removable expansion bracelet link |
EP2606762B1 (en) | 2011-12-22 | 2015-08-12 | Montres Tudor S.A. | Clasp with different bracelet length settings |
EP3744209A1 (en) | 2019-05-28 | 2020-12-02 | Patek Philippe SA Genève | Elastic bracelet with links |
-
2021
- 2021-09-24 EP EP21199004.9A patent/EP4154752A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2518507A (en) * | 1949-01-11 | 1950-08-15 | Kestenman Bros Mfg Co | Expansible band or bracelet |
US2744379A (en) * | 1954-12-09 | 1956-05-08 | Kestenman Bros Mfg Co | Expansible band with dual purpose latch |
US2848864A (en) * | 1957-02-13 | 1958-08-26 | Duchess Jewelry Mfg Corp | Removable expansion bracelet link |
EP2606762B1 (en) | 2011-12-22 | 2015-08-12 | Montres Tudor S.A. | Clasp with different bracelet length settings |
EP3744209A1 (en) | 2019-05-28 | 2020-12-02 | Patek Philippe SA Genève | Elastic bracelet with links |
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