EP2484245B1 - Adjustable link - Google Patents

Description

Field of the invention

The invention relates to an adjustable link bracelet, comprising at least a first half-link and at least a second half-link movable relative to each other in one direction, and which constitute a captive assembly.

The invention also relates to a bracelet comprising at least two bracelet strands.

The invention relates to the field of adjustable fasteners, in particular for objects intended to be worn on the human or animal body. It relates in particular to the fastenings of bracelets, belts, straps, shoulder belts and the like, used in particular in the fields of jewelery, jewelery, leather goods, or in the upholstery.

Background of the invention

The closure of bracelets, necklaces, belts, straps and the like is generally effected in an adjustable manner at predetermined positions, which allow precise repositioning, and that the user can adjust by cooperation of a finger with one of a plurality of holes. holes, or by hanging a pawn on a rack, or the like. Continuous-type, friction-holding type closures do not offer the possibility of precise repositioning.

It is often necessary to have an adjustable fixing length, for example between two predetermined positions, to take into account climatic factors, or the morphology or comfort of the user.

The document CH 699067 in the name of ELFIX PRODUCTION SA describes a device for fine adjustment of the length of a bracelet integrated in the lid of a clasp, and comprising an indexing device in two predefined positions, and which comprises integral ball spring plungers a transverse bar connected to one end of the bracelet and provided to cooperate with per4ages provided in the cover of the clasp.

The documents EP 0 737 427 on behalf of SWATCH GROUP MANAGEMENT SERVICES AG and CH 695 656 in the name of WERTHANOR SA describe adjustable links for watchbands, in which the adjustment is effected by actuating an unlocking button to move from one indexation position length to the other.

The document FR 2,670,995 in the name of PERILLAT COLOMB describes a bar extending in the longitudinal direction of a bracelet, and whose ends are each engaged in a link portion according to predefined indexing positions, either by spring bars or by pins cooperating with holes provided on the bar. The transition from one position to another requires the use of tools. These indexing devices extend transversely and require a large amount of space. They are more apparent, and detract from the overall aesthetic of the bracelet.

These known devices act transversely, generally require the use of a tool to perform the adjustment, and remain visible.

Summary of the invention

The invention proposes to provide a more compact solution than those of the prior art, acting in the longitudinal direction of the bracelet, with an adjustable mechanism without special tools, where the adjustment mechanism remains hidden, and comprises return means for bring the adjustable link back to its shortened position.

• ledit premier demi-maillon, ou bien comporte au moins un organe de liaison et de verrouillage, ou bien est assemblé de façon fixe ou avec une mobilité restreinte selon ladite direction avec au moins un organe de liaison et de verrouillage, ledit organe de liaison et de verrouillage s'étendant selon ladite direction et comportant des moyens de verrouillage,
• ledit deuxième demi-maillon, ou bien comporte des moyens de verrouillage complémentaire, ou bien est assemblé de façon fixe ou avec une mobilité restreinte selon ladite direction avec des moyens de verrouillage complémentaire,
• lesdits moyens de verrouillage et lesdits moyens de verrouillage complémentaire définissent ensemble au moins deux positions de verrouillage en immobilisation dudit premier demi-maillon par rapport audit deuxième demi-maillon, discrètes et distantes selon ladite direction,
• lesdits moyens de verrouillage ou/et lesdits moyens de verrouillage complémentaire sont mobiles, sous l'action d'un effort exercé selon ladite direction et supérieur à une valeur donnée, à l'encontre de moyens de rappel élastique que comportent respectivement lesdits moyens de verrouillage complémentaire ou/et lesdits moyens de verrouillage, pour autoriser un changement de position relative entre ledit premier demi-maillon et ledit deuxième demi-maillon selon ladite direction.

To this end, the invention relates to an adjustable bracelet link, comprising at least a first half-link and at least a second half-link movable relative to each other in one direction, and which constitute a captive set characterized in that

• said first half-link, or comprises at least one connecting and locking member, or is assembled fixedly or with a restricted mobility in said direction with at least one connecting and locking member, said connecting member and locking device extending in said direction and having locking means,
• said second half-link, or comprises complementary locking means, or is fixedly assembled or with limited mobility in said direction with complementary locking means,
• said locking means and said complementary locking means together define at least two locking positions in immobilization of said first half-link with respect to said second half-link, discrete and distant in said direction,
• said locking means and / or said complementary locking means are movable, under the action of a force exerted in said direction and greater than a given value, against resilient return means which respectively comprise said locking means complementary and / or said locking means, to allow a change of relative position between said first half-link and said second half-link in said direction.

According to one characteristic of the invention, said at least one first half-link and said at least one second half-link are guided relative to each other by the cooperation of guiding means and complementary guide means, and constitute a captive set by the cooperation of means of arrest and means complementary stop, and said connecting and locking member comprises at least one finger extending in said direction and which comprises substantially elastic radial return locking means relative to said direction which are movable between a folded position and a deployed position, and said second half-link comprises at least one channel extending in said direction and arranged to allow passage of said finger in only one of said folded or deployed positions of said locking means, and said second half-link further comprises in the vicinity of said channel, complementary locking means arranged to cooperate in at least one locking position with said locking means in the other of said extended or folded positions of said locking means, and said locking means and said complementary locking means together define at least two said positions locking discrete and distant in said direction.

According to another characteristic of the invention, said first half-link and said second half-link frame a central body that fully integrates the adjustment mechanism, and at least said first half-link or second half-link comprises at least one guiding means consisting of at least one finger having stop means, and carrying at least one locking means comprising at least one "O-ring elastic seal mounted in a groove of said finger and which cooperates in support with at least a complementary locking means consisting of a rib carried by said central body, defining on each side of said rib a lateral housing, wherein said seal can come into abutment on one side or the other of said rib.

According to another characteristic of the invention, said first half-link and said second half-link frame a central body which fully integrates the adjustment mechanism, and said adjustable link comprises at least one elastic locking element constituted by a spring-stay flat, in the form of a single or double arrow, comprising at least one slot of elasticity, and comprising at least one attachment corner to said first half-link and having a front portion elastically deformable opposite said at least one slot and has at least one adjusting wedge cooperating with a setting notch of said second half-link of a plurality of such adjustment notches carried by said second half-link, the passage from one to the other being possible by compression of said wedge resulting from a traction force or thrust in said direction.

The invention also relates to a bracelet comprising at least two bracelet strands, characterized in that it comprises at least one such adjustable link, attached by fastening means to the bracelet strands.

Brief description of the drawings

• la figure 1 représente, de façon schématisée et en perspective, une première variante de maillon réglable selon l'invention, verrouillé dans une position déployée ;
• la figure 2 représente, de façon schématisée et en vue de dessus, le maillon réglable de la figure 1, verrouillé dans une position repliée ;
• la figure 3 représente, de façon schématisée et en vue de côté, le maillon réglable de la figure 1 dans sa position déployée ;
• la figure 4 représente, de façon schématisée et en section longitudinale selon la coupe AA de la figure 2, le maillon réglable de la figure 1 dans sa position déployée ;
• la figure 5 représente, de façon schématisée et en section longitudinale selon la coupe BB de la figure 2, le maillon réglable de la figure 1 dans sa position déployée ;
• la figure 6 représente, de façon schématisée et en vue de côté, le maillon réglable de la figure 1 dans sa position repliée ;
• la figure 7 représente, de façon schématisée et en section longitudinale selon la coupe AA de la figure 2, le maillon réglable de la figure 1 dans sa position repliée ;
• la figure 8 représente, de façon schématisée et en section longitudinale selon la coupe BB de la figure 2, le maillon réglable de la figure 1 dans sa position repliée ;
• la figure 9 représente, de façon schématisée et en perspective, un demi-maillon que comporte le maillon réglable de la figure 1, représenté avec un doigt de verrouillage en position assemblée, et, en éclaté, avec des moyens de guidage complémentaires à fixer sur un autre demi-maillon, agencés pour être insérés dans des moyens de guidage visibles sur la face porteuse du doigt de verrouillage ;
• la figure 10 représente, de façon partielle et similaire à la figure 5, une variante de l'invention avec un élément de masquage particulier ;
• la figure 11 représente, de façon schématisée et en perspective, un bracelet incorporant un maillon réglable selon l'invention ;
• la figure 12 représente, de façon partielle et similaire à la figure 5, une variante de l'invention avec une mobilité selon une direction curviligne ;
• la figure 13 représente, de façon schématisée et en perspective, un détail d'une variante de l'invention ;
• la figure 14 représente, de façon similaire à la figure 5, une variante de l'invention avec des moyens de verrouillage particuliers ;
• la figure 15 représente, de façon partielle et similaire à la figure 14, une autre variante de l'invention avec des moyens de verrouillage complémentaire particuliers ;
• la figure 16 représente, de façon schématisée, partielle et en section longitudinale selon un plan parallèle à une direction de mobilité du maillon réglable, un détail d'un mécanisme de manoeuvre d'un élément de masquage que comporte l'invention, dans la position repliée du maillon réglable ;
• la figure 17 représente le mécanisme de la figure 16 dans la position déployée du maillon réglable ;
• la figure 18 représente, de façon schématisée et en vue de dessus, une autre variante de maillon réglable selon l'invention, verrouillé dans une position déployée ;
• la figure 19 représente, de façon similaire à la figure 18, le même maillon réglable, verrouillé dans une position repliée ;
• la figure 20 représente, de façon schématisée et en vue de côté, le maillon réglable de la figure 18 dans sa position déployée ;
• la figure 21 représente, de façon schématisée et en éclaté en vue de dessus, le maillon réglable de la figure 18 ;
• la figure 22 représente, de façon similaire à la figure 21, une étape intermédiaire d'assemblage du maillon réglable de la figure 18, avec un élément médian de masquage pré-monté sur deux flasques et solidarisé avec eux par une goupille médiane ;
• la figure 23 représente, de façon schématisée et en vue de côté, un détail du maillon réglable de la figure 18, comportant deux goupilles de traverse coopérant avec un flasque latéral ressort, à l'état libre en trait plein, et sous une déformation élastique en trait interrompu;
• les figures 24 et 25 représentent, de façon schématisée, en éclaté et en perspective, une autre variante encore de maillon réglable selon l'invention, comportant un corps central par rapport auquel sont mobiles, de façon discrète, deux demi-maillons ;
• la figure 26 est une vue schématisée et de côté de la variantes des figures 25 et 26 dans une position d'encombrement minimal, correspondant à la figure 27 qui est une coupe en vue de dessus selon un plan parallèle à la direction de réglage et passant par les axes des composants de réglage que comporte ce maillon réglable ;
• la figure 28 est une coupe en position de réglage d'encombrement minimal, selon le plan de coupe AA de la figure 27 ;
• la figure 29 est une coupe en position de réglage d'encombrement maximal, selon le plan de coupe AA de la figure 27 ;
• la figure 30 est une coupe en position de réglage d'encombrement maximal, selon le plan de coupe CC de la figure 27 ;
• la figure 31 est un détail d'une variante à réglage multiple avec plusieurs nervures correspondant à autant de paires de positions de réglage;
• la figure 32 est un détail d'une variante à réglage multiple avec plusieurs joints correspondant à autant de paires de positions de réglage;
• la figure 33 est un détail, en vue de dessus, d'une autre variante encore de maillon réglable selon l'invention, avec une cale-ressort élastique ;
• la figure 34 est une coupe longitudinale du maillon de la figure 33 ;
• la figure 35 est une variante de la cale-ressort de la figure 33.

Other characteristics and advantages of the invention will appear better on reading the detailed description which follows, with reference to the appended drawings, in which:

• the figure 1 represents, schematically and in perspective, a first variant of adjustable link according to the invention, locked in an extended position;
• the figure 2 represents, schematically and in plan view, the adjustable link of the figure 1 locked in a folded position;
• the figure 3 represents, schematically and in side view, the adjustable link of the figure 1 in his deployed position;
• the figure 4 represents, schematically and in longitudinal section according to section AA of the figure 2 , the adjustable link of the figure 1 in his deployed position;
• the figure 5 represents, schematically and in longitudinal section according to section BB of the figure 2 , the adjustable link of the figure 1 in his deployed position;
• the figure 6 represents, schematically and in side view, the adjustable link of the figure 1 in its folded position;
• the figure 7 represents, schematically and in longitudinal section according to section AA of the figure 2 , the adjustable link of the figure 1 in its folded position;
• the figure 8 represents, schematically and in longitudinal section according to section BB of the figure 2 , the adjustable link of the figure 1 in its folded position;
• the figure 9 represents, schematically and in perspective, a half-link that includes the adjustable link of the figure 1 , represented with a locking finger in the assembled position, and, exploded, with complementary guiding means to be fixed on another half-link, arranged to be inserted in visible guiding means on the bearing face of the locking finger;
• the figure 10 represents, in a partial way and similar to the figure 5 a variant of the invention with a particular masking element;
• the figure 11 represents, schematically and in perspective, a bracelet incorporating an adjustable link according to the invention;
• the figure 12 represents, in a partial way and similar to the figure 5 a variant of the invention with mobility in a curvilinear direction;
• the figure 13 schematically shows in perspective a detail of a variant of the invention;
• the figure 14 represents, similarly to the figure 5 a variant of the invention with particular locking means;
• the figure 15 represents, in a partial way and similar to the figure 14 another variant of the invention with particular complementary locking means;
• the figure 16 represents, schematically, partially and in longitudinal section along a plane parallel to a direction of mobility of the adjustable link, a detail of a mechanism for operating a masking element that includes the invention, in the folded position of the link adjustable;
• the figure 17 represents the mechanism of the figure 16 in the extended position of the adjustable link;
• the figure 18 represents schematically and in plan view, another variant of adjustable link according to the invention, locked in an extended position;
• the figure 19 represents, similarly to the figure 18 , the same adjustable link, locked in a folded position;
• the figure 20 represents, schematically and in side view, the adjustable link of the figure 18 in his deployed position;
• the figure 21 represents schematically and exploded view from above, the adjustable link of the figure 18 ;
• the figure 22 represents, similarly to the figure 21 , an intermediate step of assembly of the adjustable link of the figure 18 , with a median masking element pre-mounted on two flanges and secured with them by a central pin;
• the figure 23 represents, schematically and in side view, a detail of the adjustable link of the figure 18 , comprising two pins of the cross member cooperating with a lateral spring flange, in the free state in solid lines, and under an elastic deformation in broken lines;
• the Figures 24 and 25 represent schematically, exploded and perspective, yet another variant of adjustable link according to the invention, comprising a central body relative to which are movable, in a discrete manner, two half-links;
• the figure 26 is a schematic view and side of the variants of the figures 25 and 26 in a position of minimal space, corresponding to the figure 27 which is a sectional plan view in a plane parallel to the direction of adjustment and passing through the axes of the adjustment components that includes this adjustable link;
• the figure 28 is a cut in the minimum space adjustment position, according to the cutting plane AA of the figure 27 ;
• the figure 29 is a cut in position of adjustment of maximum size, according to the cutting plane AA of the figure 27 ;
• the figure 30 is a cut in the maximum position of adjustment, according to the section plane CC of the figure 27 ;
• the figure 31 is a detail of a multi-setting variant with a plurality of ribs corresponding to as many pairs of setting positions;
• the figure 32 is a detail of a multiple-setting variant with multiple seals corresponding to as many pairs of setting positions;
• the figure 33 is a detail, in top view, of another variant of adjustable link according to the invention, with an elastic spring-shim;
• the figure 34 is a longitudinal section of the link of the figure 33 ;
• the figure 35 is a variant of the spring-hold of the figure 33 .

Detailed Description of the Preferred Embodiments

The invention relates to an adjustable link 1 for a bracelet 10.

The invention relates to the field of adjustable fasteners, in particular for objects intended to be worn on the human or animal body. It relates in particular to the fastenings of bracelets, necklaces, belts, straps, shoulder belts and the like, used in particular in the fields of jewelery, jewelery, leather goods, or in the upholstery.

These objects, different in size or detail, but similar in functionality, will hereinafter be referred to as "bracelet".

This adjustable link 1 comprises, as visible on the figure 2 at least one first half-link 2 and at least one second half-link 3, which are arranged to be assembled movably relative to each other in a direction of mobility D, by the cooperation of guide means 21 and complementary guiding means 31.

The invention is described here with the simplified and nonlimiting case of two complementary half-links movable relative to each other, and it is naturally possible to make an adjustable link according to the invention comprising more moving elements. between them.

This direction of mobility D can be linear, as represented in particular on the Figures 1 to 10 , or curvilinear, as visible on the figure 12 which may be of interest in the case of bracelets with a small radius of curvature, in particular for bracelets for ladies or for children.

This first half-link 2 and this second half-link 3 constitute a captive assembly thanks to stop elements limiting their relative stroke with respect to the other, either directly or with respect to at least one intermediate element such as a masking element 5 or a said central body 100, according to variants of the invention set out below1.

According to the invention, the first half-link 2, or at least one connecting and locking member 23, or is assembled fixedly or with a restricted mobility in the direction D with at least one connecting member and The locking and locking member 23 extends in the direction D and has locking means 24.

The second half-link 3, or else comprises complementary locking means 34, or is assembled in a fixed manner or with a restricted mobility in the direction D with complementary locking means 34.

The locking means 24 and the complementary locking means 34 together define at least two locking positions in immobilization of the first half-link 2 relative to the second half-link 3, these positions are discrete and distant in the direction D.

The locking means 24 and / or the complementary locking means 34 are movable, under the action of a force exerted in the direction D, and greater than a given value, against the elastic return means that respectively comprise the complementary locking means 34 and / or the locking means 24, to allow a change of relative position between the first half-link 2 and the second half-link 3 in the direction D. It is understood that the effort to be applied according to the direction D depends on the intensity and the angle of application of the resisting force exerted by the elastic return means. These are to be sized to allow the manipulation of the adjustable link 1, for a change of setting position, by one hand of the user and therefore with moderate effort, but also to ensure the maintenance in the position chosen by the user regardless of his movements or those of his clothes.

In a particular embodiment, in particular according to Figures 18 to 23 the second half-link 3 comprises at least one housing 33 extending in the direction D and arranged to allow the passage of at least one connecting and locking member 23 for its maintenance in only one of these discrete locking positions . The complementary locking means 34 are preferably arranged in the vicinity of this channel 33.

In this same realization of Figures 18 to 23 , the connecting and locking member 23 comprises at least one flange 123 which extends in a plane parallel to the direction D, and which comprises at least one oblong slot 135 extending in the direction D. This flange 123 comprises at least one narrowing 137 on either side which light 135 delimits two chambers each capable of housing a pin 153 with a minimum clearance. This light 135 is made in an elastically deformable zone of the flange 123, to allow the passage of the constriction 137 to such a pin 153 when it is subjected to a force, printed by the user on a half-link carrying this pin 153, in the direction D against the constriction 137. This force being of sufficient intensity to overcome the elastic return force exerted on the pin 153 by the narrowing and the light 135. This pin 153 and this light 135 together constitute the locking means 24 and the complementary locking means 34. figure 23 illustrates, in full line, the state at rest of the flange 123, and, in broken lines, the deformation of this flange under the effect of the application of a force in the direction D, to push the shrinkage 137 appreciably perpendicular to the direction D, to allow its crossing by the pin.

In the preferred embodiment of the figure 23 , the flange 123 comprises at least one other oblong slot 125 extending in the direction D and having at least one constriction 127 on either side of which the light 125 defines two chambers each able to accommodate another pin 152, then integral the other half-link, with minimal play. In the same way, the light 125 is made in an elastically deformable zone of the flange 123 to allow the passage of the constriction 127 to such a pin 152 when it is subjected to a force in the direction D against the constriction 127 this force being of sufficient intensity to overcome the elastic return force exerted on the pin 152 by the narrowing and the light 125. This pin 152 and the light 125 together constitute assembly means of the first half-link 2 with the connecting and locking member 23 comprising the flange 123 with a restricted mobility, according to discrete positions, in the direction D.

Preferably, the second half-link 3 comprises, on the opposite side to the first half-link 2, at least one yoke 90 having a bore 9 for receiving a minimum clearance of such a pin 153, so as to trap the flange 123 housed in said housing 33, in one of its discrete locking positions. This same pin 153 is, again, an axis of articulation of one end of a bracelet. The first half-link 2 comprises at least one housing 33 extending in the direction D and arranged to allow passage through the connecting member and locking 23, or the flange 123. In the same way as the second half link 3, the first half-link 2 comprises, on the opposite side to the latter, at least one yoke 91 having a bore 9 for the clearance clearance clearance of such a pin 152, so as to trap the flange 123 housed in the housing 33, in one of his discrete positions. The pin 152 is, again, an axis of articulation of one end of a bracelet.

Advantageously and according to the invention, the adjustable link 1 comprises, for the protection of the adjustment mechanism and to hide it in the different adjustment positions, at least one masking element 5 mounted prisoner between the first half link 2 and the second half-link 3, mounted in abutment on at least one such connecting and locking member 23. Preferably, the masking element 5 is, and maintained on the latter, or on these if there are several, as in the version illustrated by the Figures 18 to 22 where two parallel flanges 123 constitute the adjusting member 23, by at least one pin 150 passing through both the masking element 5 and the connecting and locking member 23, either directly or via a ring or tube 151.

For the stability of the bracelet, the good veneer of the masking element 5 towards the upper part visible by the user of the half-links, and to maintain a certain alignment between the links adjacent to the adjustable link 1 and the latter, with a low angular clearance allowed by the joint between them, the first half-link 2 and / or the second half-link 3 comprises at least one bearing surface 92 pushing the pin 150 and / or and the masking element 5 against of the upper lips 93, 94, that respectively comprise the first half-link 2 and the second half-link 3.

Preferably, the first half-link 2 and the second half-link 3 are symmetrical with respect to a median plane P extending in the direction D, and the link 1 comprises connecting and locking members 23 mounted in symmetry with respect to each other with respect to this median plane P. This first half-link 2 and this second half-link 3 are, again, assembled so as to constitute a captive assembly, by the cooperation of stop means 22 and means of locking. complementary stop 32.

In a particular embodiment, in particular according to Figures 1 to 17 , the first half-link 2 comprises at least one finger 223 extending in the direction D, and which comprises locking means 24 with a substantially radial elastic return relative to the direction D. These locking means 24 are movable between a folded position and an extended position.

The second half-link 3 comprises, in a complementary manner, at least one channel 33 extending in the direction D, and which is arranged to allow the passage of this finger 223, in only one of these positions, folded or deployed, locking means 24 of the finger 223 corresponding to this channel 33. Naturally, there are at least as many channels 33 in the second half-link 3 as fingers 23 on the first half-link 2.

The second half-link 3 further comprises, in the vicinity of each channel 33, complementary locking means 34, which are arranged to cooperate in at least one locking position with the locking means 24 of the corresponding finger 223 at the channel 33 concerned, in the other of the positions, deployed or folded, of these locking means 24.

As shown on the Figures 5 and 8 , in an economic embodiment, the finger 223 comprises a head of diameter greater than that of the channel 33, at the end of a body of diameter less than or equal to that of the channel 33, this head is split, the slot conferring on it its elasticity. The body can also be split as shown in the figures. The locking means 24 comprise an insertion cone in at least one direction, and preferably in both directions of movement of the finger 223. The complementary locking means 34 comprise at least one groove with an adjacent conical entry ramp. from that of the head of the finger 223.

These ramps or introduction cones allow the operation of the adjustable link 1 without excessive effort, to move from one to the other of its locking positions.

In a variant of the invention, which is not detailed here because accessible to any mechanic, and whose operation is similar but inverted, the elastic return means are not located at the finger 223, which is then rigid, but of the channel 33.

The locking means 24 and the complementary locking means 34 together define at least two discrete and remote locking positions in the direction D. figure 15 illustrates a variant with a plurality of locking positions. This plurality of positions is represented at the level of the complementary locking means 34, and it is understood that it is equally possible to make the finger 223 with a plurality of elements movable radially, or even to combine the two configurations.

In an advantageous embodiment variant, as visible on the figure 14 , the finger 223 comprises at least one groove, in which is mounted a seal "o-ring" 240 or the like, of elastically deformable material, such as rubber or the like, of substantially toroidal shape, this seal 240 constituting the means of 24. This lock is particularly economical, and in particular allows miniaturization which is interesting for very small bracelets. The figure 14 illustrates the case where the second half-link 3 comprises several additional locking means 34, in number greater than two, each consisting in this example by a groove 340 for receiving the O-ring.

In a preferred manner and as visible on the Figures 1 to 17 , the first half-link 2 and the second half-link 3 respectively comprise the stop means 22 and the complementary stop means 32, in the direction D, for their captive mounting with respect to each other, and to define a maximum adjustment stroke between on the one hand a first close position where a first bearing face 25 of the first half-link 2 is in contact with a second bearing face 35 of the second half-link 3, and else part a second remote position where the stop means 22 are in contact with the complementary stop means 32.

The illustrated configuration is advantageous when one wishes a blind assembly, as visible on the figure 9 , it is easy to equip the first half-link 2 of the finger 223, then to thread into the bores acting as guide means 21 the threaded studs 323 acting as complementary guide means 31, which is screwed into the second half-link3. These studs end with flanges constituting complementary stop means 32, and the captive mounting is thus very easily achieved.

To move from one of the locking positions to another, it is appropriate to apply a force, in the direction D, on one of the half-links with respect to the other, or in tension to move from the position of the figure 8 to that of the figure 5 or in compression in the opposite case. To transform this force in the direction D into a radial component force of sufficient intensity to overcome the resisting force of the locking means 24, a particular profile is arranged on one or the other of the half-links 2 and 3. Thus, preferably, the locking means 24 and / or the complementary locking means 34 comprise at least one oblique or radiated ramp allowing, under the action of a force applied in the direction D on the first 2 and / or second half-link, and during the relative movement between the first 2 and the second half-link, the passage of the locking means 24 from their folded position to their deployed position or vice versa.

This ramp can be conical as in the realization of Figures 5 and 8 , or in spherical cap as visible on the figure 14 , or similar.

In an advantageous embodiment, as visible in the figures, the guide means 21 are limited at one end by the stop means 22, and the complementary guide means 31 are limited at one end by the complementary stop means 32 .

In a particular embodiment, as visible in the figures, the finger 223 and the channel 33 are separate respectively from the guide means 21 and the complementary guide means 31.

Preferably, as shown in the figures, the finger 223 is arranged in the vicinity of a first bearing surface 25 of the first half-link 2, and is adjustable in length relative to the latter, for example by the cooperation of a thread and a tapping. Such a length adjustment can, again, occupy discrete positions, for example if the threaded finger 223 comprises a flange with one or more pin holes each indexable by pinning with one or more holes that includes the first threaded half-link 2.

In a preferred embodiment, of great strength and moderate cost, the guide means 21, respectively the complementary guide means 31, are constituted by a bore complementary to a finger constituting the complementary guide means 31, respectively the means of guide 21, the finger being adjustable in length relative to the half-link that carries it. This length adjustment can be made in a manner similar to that described above for the finger 223. The figures illustrate a preferred embodiment where the stop means 22, or the complementary stop means 32, are constituted by a collar. extending radially beyond this finger, this flange circulating in a recess coaxial with the guide means 21, respectively the complementary guide means 31, this recess including an end with a bearing counter of this flange, this countersink constituting the complementary stop means 32, respectively said stop means 22.

In the exemplary embodiment of the figures, the guide means 21 and the associated complementary guide means 31 are doubled, and extend in directions parallel to each other, so as to prevent any warping of the adjustable link 1 during its operation. adjustment, or in service. In a variant not illustrated by the figures, the guide means 21 and the complementary guide means 31 associated comprise at least one flat or similar so as to ensure the parallelism of movement between the orthogonal surfaces to the direction D of the first half-link 2 and the half-link 3 during their spacing or their approximation, that the direction D is linear or curvilinear.

This type of assembly allows, as visible in the figures and in particular on the figure 9 , an extremely easy assembly of the half-links between them.

Advantageously, the first half-link 2 and the second half-link 3 respectively comprise a first chamber 26 and a second chamber 36, which are arranged for, when the first half-link 2 and the second half-link 3 are assembled. one to the other, define a single room 4. The adjustable link 1 then comprises at least one masking element 5 arranged to be mounted prisoner in the single chamber 4 between the first half-link 2 and the second half-link 3, and to hide, at least on the side of an upper face 6 of this adjustable link 1 assembled, the entire adjustment and safety mechanism constituted by the guide means 21, the complementary guide means 31 or in particular the fingers or pins 323, the stop means 22, the complementary stop means 32, the finger 223, the locking means 24, the channel 33, and the complementary locking means 34. This masking element 5a, prefer nce, a profile complementary to that of room 4.

Preferably, this masking element 5 is further arranged to hide, by flanges 51, on two lateral faces 7; 8 adjacent to the upper face 6 of the link adjustable1 on either side thereof in the direction D, the entire adjustment and safety mechanism constituted by the guide means 21, the complementary guide means 31, the stop means 22, the means complementary stop 32, the finger 223, the locking means 24, the channel 33, and the complementary locking means 34.

To ensure the plating of the masking element 5 against the inner walls of the half-links 2 and 3 near the upper face 6, advantageously the masking element 5 comprises a bearing surface 54 arranged to cooperate with at least a complementary bearing surface 29 that comprises at least one of the half-links 2 or 3, for, in the manner of a cam, to maintain the masking element 5 bearing on the ends of the first chamber 26 and a second chamber 36 located near the upper face 6 of the adjustable link 1. In a simple embodiment, one of the support surfaces 54 or additional support 29 is sloped relative to the other, so as to create a ad hoc transverse movement of the masking element 5 when closing or opening the adjustable link 1.

A particularly advantageous version of the adjustable link 1 according to the invention is shown in FIGS. Figures 25 to 31 . The half-links 2 and 3 surround a central body 100 which fully integrates the adjustment mechanism, so as to make it invisible to the user. In a nonlimiting manner, the central body 100 here comprises, on either side, a central housing 108 in the form of a mortise to receive a central pin 30 that includes the half-link 3, and a wide housing 109 in the shape of a mortise to receive lateral tenons 20 and a central pin 110 that includes the half-link 2. Naturally, other configurations are imaginable, including one or tenons on the central body 100 and one or mortises on the half-links; these mortise and tenon forms allow a good maintenance of the rest of the bracelet relative to the adjustable link 1, substantially in alignment with the central body 100 for the first links.

At least the first half-link 2 or the second half-link 3, and preferably each half-link 2, 3, comprises at least one guide means 23, in particular at least one finger, with stop means 32, in particular a head or a screw head 230. In the version illustrated by the figures, each finger 223, 323, is screwed respectively onto one of the half-links 2, 3, and comprises a head 230 whose surface constitutes such locking means 32. Each half-link 2, 3 carries at least one locking means 24, here comprising at least one O-ring 240 elastic seal mounted in a groove of the finger 223 or respectively 323. Each head 230 circulates in a chamber 107 of the other half-link 3.2, a wall of which defines complementary stop means in end-stop for the stop means 32. Housing 112 or similar are provided for the housing of some screw heads. The seal 240 cooperates in abutment with at least one additional locking means, and more particularly in this illustrated version, with at least one tenon or rib 101 that comprises the central body 100, defining on each side a lateral housing 102, 103, in which the seal 240 can come to bear against the rib 101, a on either side of it. Each of these housings 102, 103 therefore corresponds to a particular relative position of the half-link 2 or 3 which carries the seal 240, with respect to the central body 100. figure 31 illustrates a particular arrangement with several ribs 101, 101A, ..., defining as many housings 102, 103, 102A, 103A, ..., and therefore as many positions of the joint 240, and therefore of the half-link 2 or 3 carrier of this seal. The figure 32 illustrates an inverse configuration where the finger 223 carries several joints 240 cooperating in turn with the same rib 101. It is thus possible to produce an adjustable link 1 with several discrete positions. The model illustrated by the Figures 25 to 30 has three adjustment positions: the shortest with the two half-links 2 and 3 completely retracted into the central body 100, the longest with the two half-links 2 and 3 out at the maximum of the central body 100, and an intermediate position where one of the two half-links is fully retracted into the central body 100, while the other is pulled out to the maximum. Of course, if the races of the fingers 23 attached to the half-links 2 and 3 are different, it is then possible to define two intermediate positions instead of one, depending on whether the user moves the first half-link 2 or the second half-link 3 relative to the central body 100. Naturally the simplest movement for the user is to perform a traction on the two strands of the bracelet enclosing the adjustable link, and thus perform the adjustment in maximum stroke, which gives the advantage of a particularly aesthetic symmetry. Such an adjustable link being robust, aesthetic, and moderate production cost, can be used in several copies on the same watch strap. For example, the use, in symmetry with respect to the clasp, two links each adjustable with a stroke of 1.5 mm provides a total adjustment capacity of 3 mm.

Naturally, this variant can be modified, in a way similar to that of the figure 9 , to comprise only one adjustment element consisting of one or more fingers 223, or respectively 323, the other fingers 323, respectively 223, then being arranged with only a stop collar or the like forming a stop; the adjustment is then made only on one side. This configuration is less favorable in amplitude of adjustment, but may allow the equipment of a watch strap with such an adjustable link disposed directly after the horns, preferably on each side of the watch case.

In a variant, the elastic seal 240 is held between the rib 101 and another stop surface, for example another rib of the same type, as visible on the figure 31 .

Preferably, the first half-link 2 and the second half-link 3 each comprise at least one finger 223, respectively 323, these fingers each having stop means 32 antagonites making this link 1 adjustable captive.

The central body 100 completely envelops the adjustment mechanism, which remains perfectly clean, the adjustable link 1 rests on a lower part of the central body 100 on the wrist of the user, who feels no discomfort during the adjustment, that he can conveniently perform with one hand with the bracelet or watch on his wrist.

The Figures 33 to 35 illustrate another alternative embodiment, which has the advantage of being very flat, and which is also careened by a central body 100. The elastic locking element 24 is constituted by a shim spring 200, preferably flat, in the shape of a single arrow, or double arrow on the figure 35 .

This wedge spring 200, for example made of spring steel or the like, is preferably symmetrical in the direction D, and has one or more elasticity slots 201, 211. It comprises at least one attachment corner 202 to the first half-link 2, the figure 33 shows a fastening wedge 202 in a fixed position relative to the first half-link 2, which comprises a notch, or a dovetail, or the like, of profile complementary to that of the wedge 202. A resiliently deformable front part in view of the slot or slots comprises at least one adjusting wedge 203 cooperating with at least one adjustment notch 204 of the second half-link 3, among a plurality of such adjustment notches 204 carried by the second half-link 3, the passage from one to the other being possible by compression of the shim 200 resulting from a traction force or thrust in the direction D. figure 35 illustrates a variant where the attachment corner 202 is also an adjustment wedge, thus movable relative to the first half-link 2, with respect to adjustment notches 204 carried by the first half-link 2, contrary to the figure 33 where he is not. A rib 101 of the central body 100, or a running limiter lug 111, advantageously limit the travel of the spring shim 200. For easy disassembly, a tool 205 with a V-end, pushed against the spring retainer 200, makes it possible to tend to close the slot 201, and thus to release the corners 203 of the notches 204, and thus to separate the two half-links, and thus to completely dismantle the adjustable link 1.

In an exemplary embodiment illustrated by the Figures 16 and 17 , the bearing surface 54 of the masking element is a trunnion 39, carried by two ramps 37 and 38 secured respectively to the first half-link 2 and the second half-link 3, arranged in a cross, so as to move away or closer this trunnion 39 transversely, substantially orthogonal to the direction D, during the approximation or spacing of the half-links.

In a variant, the flanges 51 each comprise a screw 53, constituting a bearing surface 54, the end of which is housed in a lateral groove, constituting a complementary bearing surface 29, which comprises one of the half-links, for example example the second half-link 3, to adjust the distance of the masking element 5 to the upper face 6: this distance can be constant if this lateral groove is parallel to the direction D, it can be variable, as visible in the change of position illustrated by the Figures 5 and 8 , when the lateral groove is designed to press the masking element 5 at the ends of the first chamber 26 and a second chamber 36 located near the upper face 6 of the adjustable link 1.

In another simplified variant, as visible on the figure 10 , the masking element 5 is arranged to hide the adjustment and safety mechanism on either side of the latter, without being mobile.

In another variant not illustrated in the figures, the masking element 5 is free in the chamber 4, and simply biased bearing against the upper face 6 of the adjustable link 1 by a leaf spring at its lower part, or similar.

In the illustrated embodiments, the masking element 5 is produced in the form of a hollow cylindrical sector delimited by two flanges 51

In a preferred embodiment because very economical, the direction D is linear.

For attachment to a bracelet or to a piece of jewelery or watchmaking, each half-link 2, 3 comprises attachment means 9 to a bracelet strand or the like.

The invention also relates to a bracelet 10 comprising at least two bracelet strands, and comprising at least one such adjustable link 1, attached by these fastening means 9 to the bracelet strands.

The invention thus fulfills the intended purposes, acts in the longitudinal direction of the bracelet, with an adjustable mechanism without special tools, where the adjustment mechanism remains hidden, and comprises biasing means for bringing the adjustable link back to its shortened position. The mechanism is adaptable to non-linear shapes, and allows easy adjustment safely, without risk of loss of the bracelet.

Claims (16)

1. Adjustable link (1) for a bracelet (10), comprising at least one first half link (2) and at least one second half link (3) which are moveable in relation to each other in one direction (D), and which form a captive unit, characterized in that:

   - said first half link (2) either comprises at least one connecting and locking member (23), or is assembled fixedly or with restricted mobility in said direction (D) with at least one connecting and locking member (23), said connecting and locking member (23) extending in said direction (D) and comprising a locking means (24),

   - said second half link (3) either includes a complementary locking means (34) or is assembled fixedly or with restricted mobility in said direction (D) with a complementary locking means (34),

   - said locking means (24) and said complementary locking means (34) together define at least two locking positions for immobilising said first half link (2) with respect to said second half link (3), said positions being discrete and separated from each other in said direction (D),

   - said locking means (24) and/or said complementary locking means (34) are moveable, under the action of a force that is exerted in said direction (D) and is greater than a given value, against elastic return means respectively comprised in said complementary locking means (34) and/or said locking means (24), to allow a relative change of position between said first half link (2) and said second half link (3) in said direction (D).
2. Adjustable link (1) according to claim 1, characterized in that said second half link (3) comprises at least one recess (33) which extends in said direction (D) and is arranged to allow said connecting and locking member (23) to pass in order to be held in only one of said discrete locking positions, and in that said complementary locking means (34) is arranged in proximity to said channel (33).
3. Adjustable link (1) according to claim 1 or 2 , characterized in that said connecting and locking member (23) comprises at least one flange (123) which extends in a parallel plane to said direction (D), and which includes at least one oblong hole (135) extending in said direction (D) and comprising at least one constricted portion (137) on either side of which said hole (135) delimits two chambers, each capable of housing a pin (153) with minimum play, said hole (135) being made in an elastically deformable area of said flange (123) to allow a said pin (153) to pass through said constricted portion (137) when said pin is subjected to a force in said direction (D) against said constricted portion (137), said force being of sufficient intensity to overcome the elastic return force exerted on said pin (153) by said constricted portion and said hole (135), said pin (153) and said hole (135) forming said locking means (24) and said complementary locking means (34).
4. Adjustable link (1) according to the preceding claim, characterized in that said flange (123) comprises at least one other oblong hole (125) extending in said direction (D) and comprising at least one constricted portion (127) on either side of which said hole (125) delimits two chambers, each capable of housing a pin (152) with minimum play, said hole (125) being made in an elastically deformable area of said flange (123) to allow a said pin (152) to pass through said constricted portion (127) when said pin is subjected to a force in said direction (D) against said constricted portion (127), said force being of sufficient intensity to overcome the elastic return force exerted on said pin (152) by said constricted portion (127) and said hole (125), said pin (152) and said hole (125) together forming a means of assembling said first half link (2) with said connecting and locking member (23) comprising said flange (123) with restricted mobility, in discrete positions, in said direction (D).
5. Adjustable link (1) according to claims 2 and 3, characterized in that, on the side opposite said first half link (2), said second half link (3) comprises at least one cap (90) including a bore (9) for receiving one said pin (153) with minimum play, so as to confine said flange (123) inside said recess (33), in one of said discrete locking positions thereof, said pin (153) also being arranged to form a hinge pin of one end of a bracelet, and/or characterized in that said first half link (2) comprises at least one recess (33) which extends in said direction (D) and is arranged to allow said connecting and locking member (23) to pass, and comprises, on the side opposite said second half link (3), at least one cap (91) including a bore (9) for receiving one said pin (152) with minimum play, so as to confine said flange (123) inside said recess (33), in one of the discrete positions thereof, said pin (152) being further arranged to form a hinge pin of one end of a bracelet.
6. Adjustable link (1) according to any of preceding claims, characterized in that it includes at least one masking element (5) confined between said first half link (2) and said second half link (3), mounted in abutment on at least one said connecting and locking member (23), and held thereon by at least one pin (150) which passes through both said masking element (5) and said connecting and locking member (23).
7. Adjustable link (1) according to claim 1, characterized in that said at least one first half link (2) and said at least one second half link (3) are guided in relation to each other via the cooperation of a guide means (21) and a complementary guide means (31), and form a captive unit via the cooperation of an stopping means (22) and a complementary stopping means (32), and said connecting and locking member comprises at least one finger (223) extending in said direction (D) and comprising a locking means (24) which has substantially radial elastic return relative to said direction (D) and which is moveable between a folded position and an unfolded position, and in that said second half link (3) includes at least one channel (33) which extends in said direction (D) and is arranged to allow said finger (223) to pass in only one of said folded or unfolded positions of said locking means (24), and in that, in proximity to said channel (33), said second half link (3) further includes a complementary locking means (34) arranged to cooperate, in at least one locking position, with said locking means (24) in the other of said unfolded or folded positions of said locking means (24), and in that said locking means (24) and said complementary locking means (34) together define at least two said discrete separate locking positions in said direction (D).
8. Adjustable link (1) according to claim 7, characterized in that said first half link (2) and said second half link (3) respectively comprise said stopping means (22) and said complementary stopping means (32), in said direction (D) for the captive assembly of said links in relation to each other, and to define a maximum adjustment travel between a first close position where a first bearing surface (25) of said first half link (2) is in contact with a second bearing surface (35) of said second half link (3), and a second distant position where said stopping means (22) is in contact with said complementary stopping means (32).
9. Adjustable link (1) according to claim 7 or 8, characterized in that said locking means (24) and/or said complementary locking means (34) comprise at least one ramp which, under the action of a force applied in said direction (D) to said first half link (2) and/or said second half link (3), and during the relative movement between said first half link (2) and said second half link (3), allows said locking means (24) to change from the folded position to the unfolded position thereof or vice versa.
10. Adjustable link (1) according to any of claims 7 to 9, characterized in that said guide means (21), respectively said complementary guide means (31), is formed by a bore complementary to a finger forming said complementary guide means (31), respectively said guide means (21), said finger being adjustable in length relative to the half link which carries said finger.
11. Adjustable link (1) according to any of claims 7 to 10, characterized in that said first half link (2) and said second half link (3) respectively comprise a first chamber (26) and a second chamber (36) arranged, when said first half link (2) and said second half link (3) are assembled to each other, to define a single chamber (4), and in that said adjustable link (1) comprises at least one masking element (5) arranged to be confined inside said single chamber (4) between said first half link (2) and said second half link (3), and to conceal, at least on the side of a top face (6) of said assembled adjustable link (1), said guide means (21), said complementary guide means (31), said stopping means (22), said complementary stopping means (32), said finger (223), said locking means (24), said channel (33) and said complementary locking means (34).
12. Adjustable link (1) according to claim 1, characterized in that said first half link (2) and said second half link (3) form a frame around a central body (100) which incorporates the entire adjustment mechanism, and in that at least said first half link (2) or said second half link (3) includes at least one guide means (23) formed by at least one finger (223; 323) comprising stopping means (32), and carrying at least one locking means (24) including at least one elastic O-ring joint (240), which is mounted in a groove of said finger (223; 323) and which cooperates in abutment with at least one complementary locking means formed by a rib (101) carried by said central body (100), defining a lateral recess (102; 103) on each side of said rib (101), in which lateral recess said joint (240) can be stopped on one side or other of said rib (101).
13. Adjustable link (1) according to claim 12, characterized in that said first half link (2) and said second half link (3) each include at least one said finger (223; 323), said fingers each including opposing stopping means (32) making said adjustable link (1) captive.
14. Adjustable link (1) according to claim 1, characterized in that said first half-link (2) and said second half-link (3) form a frame around a central body (100) which incorporates the entire adjustment mechanism, and in that said adjustable link (1) comprises at least one elastic locking element (24), formed by a flat wedge spring (200) in the shape of a single or double arrow, comprising at least one elastic slot (201; 211), and comprising at least one corner fastening (202) for said first half link (2) and comprising an elastically deformable front portion opposite said at least one slot and which comprises at least one adjustment corner (203) cooperating with an adjustment notch (204) of said second half link (3) among a plurality of adjustment notches (204) carried by said second half link (3), the change from one notch to another being possible by the compression of said wedge (200) resulting from a traction or thrust force in said direction (D).
15. Adjustable link (1) according to claim 14, characterized in that said corner fastening (202) is also an adjustment corner (203) which is moveable relative to said first half link (2) between a plurality of said adjustment notches (204) carried by said first half link (2).
16. Bracelet (10) comprising at least two bracelet strands, characterized in that it comprises at least one adjustable link (1) according to any of preceding claims, wherein each half link (2; 3) comprises a means (9) of attachment to a bracelet strand, and which is attached by said attachment means (9) to said bracelet strands.

Images