Link and set of links

Abstract

The invention relates to a link or to a set of links comprising: - a first element and a second element movable relative to the first element between a proximal position and at least one distal position, - a locking system capable of locking the longitudinal position of the first element relative to the second element, said locking system being capable of occupying a locked position and an unlocked position. According to the invention, the link or the set of links further comprises a return spring (46) arranged between the first element and the second element, so as to exert a force between the first element and the second element tending to bring them back into their proximal position.

Description

Description Link and set of links technical field

[0001] The present invention relates to the field of link watch bracelets. It primarily concerns a link or a set of links comprising a first element and a second element movable relative to the first element between a proximal position and at least one distal position. The link or set of links also includes a locking system capable of locking the longitudinal position of the first element relative to the second element, said locking system being capable of occupying a locked position and an unlocked position. State of the art

[0002] It's well known that a person's wrist can swell slightly due to heat or certain arm positions, for example. For a watch wearer, the pressure exerted by the strap on the wrist can then become excessive. While it's easy to adjust a flexible strap with a pin buckle by changing the hole used and increasing the usable length of the strap, this isn't possible with a link bracelet.

[0003] Generally, solutions known as adjustment systems are used and are housed within the bracelet clasp. Indeed, with a link bracelet, the clasp is a folding clasp type. It offers a volume and structure that allow for the incorporation of sliders or other solutions to lengthen or shorten the overall length of the bracelet.

[0004] There are also solutions using sliding links, consisting of two half-links that slide into each other. This type of construction requires relatively large links and therefore specific bracelet designs. It cannot be adapted to multi-row link bracelets.

[0005] The advantage of such bracelets or clasps equipped with a comfort adjustment mechanism is that they allow you to adjust the bracelet length while wearing the watch. Thus, when the wrist is compressed, you generally just need to unlock the comfort adjustment system and either contract your wrist further or pull on the bracelet with your free hand to lengthen it. While extending the bracelet is relatively simple, the reverse operation is more delicate, particularly because it must be performed with one hand. It requires coordinating pressure on the locking mechanisms with an action on the bracelet to bring the two moving parts together, while preventing them from becoming misaligned.

[0006] The present invention aims to provide a link or a set of links that overcomes the drawbacks of prior art solutions. Disclosure of the invention

[0007] More specifically, the invention relates to a set of links comprising at least: - a first element and a second movable element relative to the first element along a longitudinal direction (with reference to a longitudinal axis defined by the axis of a bracelet) between a proximal position and at least one distal position, - a locking system capable of locking the longitudinal position of the first element relative to the second element, said locking system being capable of occupying a locked position and an unlocked position,

[0008] According to the invention, the link assembly further includes a return spring arranged between the first and second elements, so as to exert a force between the first and second elements tending to return them to their proximal position. In one embodiment, the return spring is a tension spring. In another embodiment, the tension spring includes hooks for pulling on the first and second elements.

[0009] The locking system in the locked position is locked, preventing movement at least along the longitudinal direction between the first and second elements. The locking system in the unlocked position is unlocked, allowing movement at least along the longitudinal direction between the first and second elements.

[0010] In the first variant, the set of links includes: - a first link, at least part of which forms the first element and which has lateral walls, with reference to a longitudinal axis defined by the axis of a bracelet into which said set of links is intended to be integrated, - a first lateral link, at least part of which forms the second element, arranged laterally with respect to the first link; the first link is connected to the first lateral link in such a way that they are mobile in longitudinal translation, - a first locking system forming part of the locking system and housed in the first link, capable of locking the relative longitudinal position of the first link with respect to the first lateral link, said first locking system being capable of occupying a locked position and an unlocked position, a first push button housed in the first lateral link and arranged to control the locking system and move it from a locked position to an unlocked position.

[0011] In a further variation, the first link is connected to the first lateral link by a first pin passing through the first link via oblong openings in said lateral walls. The set of links further comprises: - a second lateral link, at least part of which forms the second element, said first and second lateral links being arranged on either side of the first link, opposite each other, the first lateral link and the second lateral link are joined together by said first pin (passing through the first central link via the oblong openings in each of said lateral walls), so that the first central link is mobile in longitudinal translation relative to the lateral links, - a second push button housed in the second lateral link, said first and second push buttons being arranged to control the locking system and move it from a locked position to an unlocked position.

[0012] The return spring is arranged between, on the one hand, the first link forming part of the first element and, on the other hand, the first lateral link and the The second lateral link forms part of the second element. As seen above, the return spring is preferably a tension spring. In conjunction with the push-button locking system, simply pinching the push-buttons and pulling them extends the entire link assembly. Adjusting the length can be done with one hand by operating the push-buttons and pulling the mechanism, for example, towards you, against the tension spring, which is then extended. Adjusting the length can also be done with one hand by simply operating the push-buttons and allowing the return spring to bring the end sections of the link assembly together.

[0013] Preferably, the first central link has a fixed additional pin through it, and the return spring connects the first pin and the additional pin of the first central link. In one embodiment, the central link has at least one recess (a notch, a passage) for at least one hook of the return spring attached to the first pin or the additional pin. This facilitates assembly. In one embodiment, the return spring is attached approximately in the middle of the first pin and / or approximately in the middle of the additional pin. In other words, the return spring is positioned in the middle of the chain of links along a transverse direction of the bracelet. The tensile forces are thus balanced, without any overturning or jamming torque.

[0014] In a further variant, the set of links includes a second link forming part of a second first element, located in line with the first link, between the first and second lateral links, the latter being offset longitudinally relative to the first and second links. The second central link also includes lateral walls, the first lateral link and the second lateral link being rigidly connected to each other by a second pin passing through the second link via oblong openings in said lateral walls, so that the second link is movable in longitudinal translation relative to the lateral links.The set of links also includes a second locking system, part of the locking mechanism and housed within the second link, capable of locking the relative longitudinal position of the second link with respect to the first and second lateral links. This second locking system is capable of occupying both a locked and an unlocked position. The first and second pushers are arranged to simultaneously actuate the first and second locking systems. A second return spring is arranged between, on the one hand, the second link forming part of the second first element and, on the other hand, the first and second lateral links, which are also forming part of a second second element.

[0015] Advantageously, the second central link is crossed by a second additional fixed pin and the second return spring connects the second pin and the additional pin of the second central link.

[0016] Advantageously, the first locking system comprises a pair of sleeves sliding on the first pin, and a pair of studs fixedly arranged inside the first central link, each stud designed to cooperate with a sleeve. Either the sleeves or the studs alternately each carry a locking mechanism, and the remaining studs and sleeves each carry a stop structure capable of cooperating with the locking mechanism. The stop structure has several discrete elements defining at least two relative positions of cooperation between the locking mechanism and the stop structure.

[0017] Advantageously, the second locking system comprises a pair of sleeves sliding on the second pin, and a pair of studs fixedly arranged inside the second central link, each stud designed to cooperate with a sleeve. Either the sleeves or the studs alternately each carry a locking mechanism, while the other system consists of studs and sleeves each incorporating a locking structure capable of cooperating with the locking mechanism. The locking structure has several discrete elements defining at least two relative positions of cooperation between the locking mechanism and the locking structure.

[0018] Preferably, the lock and the stop structure of the first locking system and the second locking system are formed by a portion of rack.

[0019] Preferably, the sleeves of the first locking system and the second locking system are mounted to move against a spring.

[0020] Preferably, the first pusher is guided onto the first pin and the second pusher is guided onto the second pin when it is present.

[0021] Advantageously, said first and second pushers comprise a tubular portion acting on said sleeves of the first locking system and of the second locking system when it is present.

[0022] The present invention also relates to a link comprising: - a first element and a second element movable relative to the first element along a longitudinal direction between a proximal position and at least one distal position, - a locking system capable of locking the longitudinal position of the first element relative to the second element, said locking system being capable of occupying a locked position and an unlocked position.

[0023] According to the invention, the link further comprises a return spring arranged between the first element and the second element, so as to exert a force between the first element and the second element tending to bring them back into their proximal position.

[0024] Advantageously, the link comprises a hollow link base forming said first element, and a drawer, forming the second element, mounted to slide along a longitudinal direction on said link base.

[0025] Advantageously, the drawer includes two slides, parallel to each other along the longitudinal axis of the bracelet.

[0026] The slides are preferably connected by a connecting element.

[0027] In a preferred embodiment, each slide has a pad, taking place in a recess, formed in the inner surface of the link base, said recesses being delimited by edges which define the extreme longitudinal positions of the drawer with reference to the link base.

[0028] Preferably, the return spring is arranged between the connecting member and a protruding member, located in the hollow portion of the link.

[0029] The invention also relates to a bracelet comprising a set of links or a link as mentioned above. Brief description of the drawings

[0030] Further details of the invention will become clearer upon reading the following description, made with reference to the attached drawing in which: - Figures 1 to 4 are top views of a set of links according to a first embodiment of the invention, in different positions illustrating its use, Figures 5 and 6 illustrate two other embodiments, and - Figures 7 and 8 illustrate an additional embodiment, in two different positions, while figure 9 represents this additional embodiment in isometric view, and in partial exploded view. Method of embodying the invention

[0031] The invention relates, firstly, to a set of links for a multi-link bracelet. According to a first embodiment, the bracelet typically comprises three rows: a central row and two lateral rows on either side of the central row. The main axis of the bracelet is defined as the longitudinal axis. The set of links according to the invention allows the bracelet length to be adjusted by modifying the relative longitudinal position between at least one central link and a pair of lateral links.

[0032] Figures 1 and 2 show a set of links according to a first embodiment of the invention, in a first position, corresponding to a short configuration, while figures 3 and 4 correspond to a long configuration.

[0033] More specifically, a first central link 10 with lateral walls has been represented, with reference to the longitudinal axis. This central link 10 is hollow and has or receives a number of functional elements which will be detailed below.

[0034] The chain link assembly also includes a first lateral link 12 and a second lateral link 14, positioned on either side of the first central link 10, opposite each other. The first lateral link 12 and the second lateral link 14 are rigidly connected to each other by a first pin 16, or bar (in the sense of a small bar), passing through the first central link 10 via oblong openings 18 formed in the lateral walls. The oblong shape of the openings is parallel to the longitudinal axis, so that the first central link 10 is free to move longitudinally relative to the lateral links 12 and 14, by displacement of the first pin 16 within the oblong openings 18.

[0035] To prevent the first central link 10 from moving uncontrollably relative to the lateral links 12 and 14, the link assembly according to the invention further comprises a first locking system 20, at least partially housed within the first central link 10, capable of locking the relative longitudinal position of the first central link 10 with respect to the first 12 and second 14 lateral links. The first locking system 20 is capable of occupying a locked position in which the relative longitudinal position of the first link central 10 relative to the first 12 and second 14 lateral links is locked, and an unlocked position in which the relative longitudinal position of the first central link 10 relative to the first 12 and second 14 lateral links is unlocked, i.e. the first central link 10 can be moved relative to the pair formed by the first lateral link 12 and the second lateral link 14.

[0036] To control the first locking system 20, a first 22a and a second 22b pushbuttons are housed respectively in the first lateral link 12 and the second lateral link 14.

[0037] In more detail, the first locking system 20 comprises a pair of sleeves 24 sliding on the first pin 16. A coil-type spring 26, for example, is mounted on the pin 16, interposed between the two sleeves 24. The length of the spring 26 is adjusted so that it maintains the sleeves 24 in a distal position on the pin 16. This distal position is defined by stops, sleeves against pushers, and pushers against the lateral links.

[0038] Each pusher 22 is guided on the first pin 16 to ensure its functional movement. Each pusher 22 has for this purpose a tubular portion 28, also mounted to slide on the first pin 16 and having a portion opposite each sleeve 24, respectively, so as to be able to act on said sleeves 24. In other words, pressure exerted on a push button 22 causes the The corresponding tubular portion 28 moves, also displacing the sleeve 24 with which it is in contact, by compressing the spring 26. Advantageously, the tubular portion 28 is made in one piece with the corresponding pusher 22. Also advantageously, the spring 26 allows the sleeves 24 and the tubular portions 28 to be pressed against each end of the first pin 16. The dimensions are adjusted so that the pusher, in its rest position illustrated in Figure 1, in which it is held by the spring 26, is flush with or slightly protrudes from the surface of the lateral link in which it is housed. The spring 26 also ensures the automatic return of the pushers 22 to their rest position after they have been actuated.

[0039] The first locking system 20 further comprises a pair of studs 30 arranged rigidly inside the first central link 10, each stud 30 being designed to cooperate with a sleeve 24. For its assembly within the link, the illustrated embodiment proposes that each stud 30 have at least one slot 32, forming a mortise, while the first link has at least one projecting element 34, of complementary shape, forming a tenon, shaped to cooperate with the mortise. Various assemblies of this type or alternative types are possible for assembling the studs 30 within the link. In the example, there are two slots and two projecting elements for each stud 30.

[0040] In the example shown, the sleeves 24 are each attached to a lock 36, which is a portion of a rack extending transversely with respect to the axis of the sleeve 24. The studs 30 have a stop structure 38 with several discrete elements. In the example, the stop structure 38 is also formed by a portion of a rack, whose teeth define the discrete elements. These define at least two relative positions of cooperation between the lock 36 and the stop structure 38. The rack portions are parallel to each other and orthogonal to the first pin 16. Furthermore, the teeth of the racks allow them to mesh together without any perceptible backlash.

[0041] Other configurations are possible for implementing the locking mechanism 36 and the stop structure 38. For example, a locking finger could be inserted into openings or between pillars that form the stop structure. One of the locking mechanisms and the stop structure could be fixed to the sleeve and the other to the central link, or vice versa.

[0042] In operation, we start from the situation illustrated in figure 1, the first central link 1 is in a position close to the lateral links 12 and 14, corresponding to a "short" configuration for the bracelet.

[0043] When a user presses the pushers 22, naturally by simultaneously actuating the two opposing pushers between the thumb and forefinger, it brings the sleeves 24 closer together against the spring 26 and disengages the locks 36 from their respective stop structure 38. The first locking system 20 is then in the unlocked position, in the position illustrated in Figure 2.

[0044] The user can then move the first central link 10 away from the lateral links 12 and 14, either by applying slight traction to the bracelet while still holding the pushers 22 down, or by contracting their wrist while also still holding the pushers down. This results in the position illustrated in Figure 3.

[0045] Then, the user releases the pushers 22. Under the action of the spring 26, the sleeves 24 return to their rest position and the latches 36 engage in their respective stop structures 38. The relative longitudinal position of the central link 10 and the lateral links 12 and 14 is different, and the configuration is larger than that illustrated in Figure 1. The first locking system 20 is again in the locked position, and the first central link 10 is positioned further away from the lateral links 12 and 14, corresponding to a "long" configuration for the bracelet. This situation is illustrated in Figure 4.

[0046] For interconnection to subsequent lateral links, or even to a watch case, the central link is traversed by an additional pin (not shown), disposed in a housing 40. The additional pin is fixed in translation along the longitudinal axis relative to the central link. A return spring 42 connects the first pin 16 to the additional pin or to the housing 40. The return spring 42 tends to return the first central link 10 in its short configuration. The attachment of the return spring 42 on the first pin 10 can be intercalated in the coils of the spring 26.

[0047] The central link and the parts attached to it in longitudinal translation define a first element. The lateral links and the parts attached to them in longitudinal translation define a second element. The return spring 46 is arranged between the first and second elements so as to exert a force between the first and second elements tending to return them to their proximal position.

[0048] Advantageously, and as illustrated in the example, the set of links includes a second central link 10.2, located in line with the first central link 10 along the longitudinal axis, between the first 12 and second 14 lateral links. These latter links are offset longitudinally relative to the first 10 and second 10.2 central links. The bracelet can thus be lengthened by moving one or both of the first and second central links relative to the first 12 and second 14 lateral links, providing greater flexibility and range of adjustment.

[0049] We find a construction similar to what has just been described for the first central link 10, the similar elements bearing the same number, followed by .2.

[0050] Thus, the second central link 10.2 also includes side walls. The first side link 12 and the second side link 14 are rigidly connected to each other by a second pin 16.2 passing through the second central link 10.2 via oblong openings 18.2 in the side walls, so that the second central link 10.2 is movable in longitudinal translation relative to the side links 12, 14. The second pin 16.2 is parallel to the first pin 16.1 that passes through the first central link 10. The same pair of side links is involved with respect to the first central link 10 and the second central link 10.2.

[0051] To prevent the second central link 10.2 from moving uncontrollably relative to the lateral links 12 and 14, the link assembly according to the invention further comprises a second locking system 20.2, at least partially housed within the second central link 10.2, capable of locking the relative longitudinal position of the second central link 10.2 with respect to the first 12 and the second 14 lateral links. The second locking system 20.2 is capable of occupying a locked position in which the relative longitudinal position of the second central link 10.2 with respect to the first 12 and the second 14 lateral links is locked, and an unlocked position in which the relative longitudinal position of the second central link is unlocked. 10.2 compared to the first 12 and the second 14 side links is unlocked.

[0052] To control the second locking system 20.2, the first 22a and the second 22b pushbuttons, housed respectively in the first 12 and the second 14 lateral links, advantageously act on the first and second locking systems simultaneously, as will be understood below.

[0053] Similar to what was described for the first locking system 20, the second locking system 20.2 comprises a pair of sleeves 24.2 sliding on the second pin 16.2. A coil-type spring 26.2, for example, is mounted on the second pin 16.2, interposed between the two sleeves 24.2. The length of the spring 26.2 is adjusted so that it maintains the sleeves 24.2 in a distal position on the second pin 16.2. This distal position is defined by stops, sleeves against pushers, and pushers against the lateral links.

[0054] Each pusher 22 is guided on the second pin 16.2 to ensure its functional movement. Each pusher 22 has for this purpose a tubular portion 28.2, also mounted to slide on the second pin 16 and having a portion opposite each sleeve 24.2, respectively, so as to be able to act on said sleeves 24.2. In other words, pressure exerted on a push button 22 causes the The corresponding tubular portion 28.2 moves, also moving the sleeve 24.2 with which it is in contact, by compressing the spring 26.2. Advantageously, the tubular portion 28.2 is made in one piece with the corresponding pusher 22 and with the corresponding tubular portion 28 of the first locking system. Thus, a pusher can control the movement of the sleeves of the first and second locking systems. Also advantageously, the spring 26.2 allows the sleeves 24.2 and the tubular portions to be compressed. 28.2 at each end of the second pin 16.2. The dimensions are adjusted so that the pusher, in its rest position illustrated in Figure 1, in which it is held by the spring 26.2, is flush with or protrudes slightly from the surface of the lateral link in which it is housed. The spring 26.2 also ensures the automatic return of the pushers 22 to their rest position. The springs 26 and 26.2 are preferably identical so that the pushers receive a very similar force from each, to prevent them from becoming misaligned.

[0055] The second locking system 20.2 further comprises a pair of studs 30.2 arranged rigidly inside the second central link 10.2, each stud 30.2 being intended to cooperate with a sleeve 24.2. For its assembly in the link, the illustrated embodiment proposes that each stud 30.2 has at least one slot 32.2, forming a mortise, while the second link has at least one projecting element 34.2. Complementary shape, forming a tenon, shaped to cooperate with the mortise. Various assemblies of this type or alternative types are still possible for joining the studs in the link. In the example, there are two slots and two projecting elements for each stud 30.2.

[0056] In the example shown, the sleeves 24.2 are each attached to a lock 36.2, which is a rack segment extending transversely with respect to the axis of the sleeve 24. The studs 30.2 have a stop structure 38.2 with several discrete elements. In the example, the stop structure 38.2 is also formed by a rack segment, the teeth of which define the discrete elements. These define at least two relative positions of cooperation between the lock 36.2 and the stop structure 38.2. The rack segments are parallel to each other and orthogonal to the second pin 16.2. Furthermore, the teeth of the racks allow them to mesh together without any perceptible backlash.

[0057] Other configurations are possible for implementing the locking mechanism 36 and the stop structure 38. For example, a locking finger could be inserted into openings or between pillars that form the stop structure. One of the locking mechanisms and the stop structure could be fixed to the sleeve and the other to the central link, or vice versa.

[0058] The operation of the second locking mechanism is identical to what has been described above regarding the first locking mechanism and can be repeated mutatis mutandis.

[0059] Since the first 22a and second 22b pushers are arranged to simultaneously control the first 20 and second 20.2 locking systems, when the user activates the pushers, if they simply pull on the bracelet, the two central links 10 and 10.2 will move to the long configuration at the same time. To move to the short configuration, the user presses pushers 22a and 22b and acts alternately or simultaneously on the two central links 10 and 10.2.

[0060] For interconnection to subsequent lateral links, or even to a watch case, the central link is traversed by a second, additional pin (not shown), housed in a recess 40.2. This second additional pin is fixed against translation. A second return spring 42.2 connects the second pin 16.2 to the second additional pin or to the recess 40.2. The return spring 42.2 tends to return the second central link 10.2 and the lateral links to a shortened configuration. The attachment of the second return spring 42.2 to the second pin 10.2 can be interposed within the spring coils. 26.2.

[0061] The second central link and the parts attached to it in longitudinal translation define a second first element. The lateral links and the parts attached to them in longitudinal translation define a second second element. The second return spring 46.2 is arranged between the second first element and the second second element, so as to exert a force between the second first element and the second second element tending to return them to their proximal position.

[0062] Central links with an opening on one side can be used to assemble the various components of the locking systems. This opening is then closed by a cover fitted against the side walls. The cover can also help guide the sliding pins.

[0063] The fixed pins can allow assembly to other lateral links, or to a watch case, the adjacent links also being able to include other sets of links according to the invention to give more latitude to length adjustment.

[0064] Figure 5 shows another embodiment of a set of links according to the invention. This corresponds to another configuration of a link bracelet, comprising five rows of links. There are thus two lateral, external rows, formed of lateral links 120 and 140. which correspond functionally to the lateral rows of lateral links 12 and 14 of the first embodiment described above. In addition, there are two intermediate rows, located respectively between a lateral row and the central row. Functionally, the locking elements 20 located in the central link 10 of the first embodiment are found in the intermediate links 125 and 135, which form the first and second intermediate rows respectively. More specifically, one of the studs 300 of the pair of studs, and one of the sleeves 240 of the pair of sleeves of the first embodiment above, are arranged in a link 125 of a first intermediate row, while the other 305 of the studs of the pair of studs, and the other 245 of the sleeves of the pair of sleeves, are arranged in the corresponding link 135 of the second intermediate row.

[0065] In more detail, with reference to figure 5, we therefore find a first lateral link 120 of a first lateral row, attached to a pin 16 which passes through a first intermediate link 125 of a first intermediate row, then through a first central link 10, a first intermediate link 135 of a second intermediate row, then a first lateral link 140 of a second lateral row.

[0066] As described above, the locking systems 20 are found in the intermediate links. In the first intermediate link 125 of the first intermediate row, there is a stud 300 is fixed within the link, the stud being equipped with a stop structure 38. This stop structure is designed to cooperate with a lock 36, taking the form, for example, of a rack, mounted on a sleeve 240, which is movable on the pin 16. A symmetrical arrangement is found in the first intermediate link 135 of the second intermediate row. A spring (or springs) 26 is provided, for example in the first central link, to push the racks of the locks 26 against their respective stop structures 38.

[0067] As described previously, the first lateral links 120 and 140 of the first and second lateral rows have pushers 22, which allow action on the sleeves 240. We will not describe again in detail the arrangement of the pushers, which cooperate with the sleeves, as what has been described previously is repeated in a similar way in the example of figure 5.

[0068] A second pin 16.2 can also be found connecting the first 120 and second 140 lateral links, via a second link 125.2 of the first intermediate row, the first central link 10, and a second link 135 of the second intermediate row. Locking mechanisms, similar to those described for the first links of the intermediate rows, can also be found in the second links of the first and second intermediate rows, advantageously also actuated by the same pushers.

[0069] Additional pins allow these links to be connected to adjacent links, or to a box or loop. A return spring 42 can be provided in each intermediate link to connect pin 16 or 16.2 to a fixed pin, ensuring automatic return to the short configuration position by actuating the pushers.

[0070] The lateral links and the central link, which are fixed together in longitudinal translation, define a first element as defined in the claims. The intermediate links, which are fixed together in longitudinal translation, define a second element as defined in the claims. At least one return spring 42 is arranged between the first element and the second element, so as to exert a force between the first and second elements tending to return them to their proximal position.

[0071] In a further variant, illustrated in Figure 6, there is a bracelet with a three-row configuration, as in the first embodiment. The difference between this variant and the first one described above is that the locking systems 20 and 20.2 are actuated by a single push button 22. The pair of latches 36 is arranged on a single sleeve 24 actuated by the push button. The latch racks are oriented in the same direction with respect to their respective studs 30 and the stop structure 38 they comprise. The racks are oriented towards the push button 22. Thus, to unlock, pressure is applied to the push button to move the racks of the locks 36 away from their pin 30, against a spring element 26, located at the end of the sleeve, for example. The connection between the push button and the sleeve can be made as described above.

[0072] Similar to what has been described above, it is advantageous to have a second similar locking system, located in a second central link 10.2 and controlled by the same pusher 22, in order to have two possibilities for adjusting the length of the bracelet.

[0073] Additional pins allow these links to be connected to adjacent links, or to a box or loop. A return spring 42 can be provided to connect pin 16 to a fixed pin, ensuring automatic return to the short configuration position by actuating the pushers.

[0074] All the different embodiments described above share the common feature of having at least two partially juxtaposed links located in different rows. One of the links includes a push button to control a locking system, for example, by acting on a sliding sleeve on a pin that connects the two juxtaposed links. This sliding sleeve is integral with a lock or a stop structure, designed to cooperate with, respectively, either a stop structure or a lock, attached to a stud fixed in the other of the links. The stud and the sleeve work together to form the locking system.

[0075] This results in a set of links comprising: - a first link 10 comprising lateral walls, with reference to a longitudinal axis defined by the axis of a bracelet into which said set of links is intended to be integrated, - a first lateral link 12, arranged laterally with respect to the first link, the first link and the first lateral link are connected to each other by a first pin 16 passing through the first link via an oblong opening 18 provided in said lateral wall located opposite the first lateral link, so that the first link is mobile in longitudinal translation with respect to the lateral link, - a first locking system 20 housed in the first link, capable of locking the relative longitudinal position of the first link with respect to the first lateral link, said first locking system being capable of occupying a locked position and an unlocked position, - a first push button 22 housed in the first lateral link and arranged to control the locking system and move it from a locked position to an unlocked position.

[0076]

[0077] Figures 7 to 9 illustrate an additional embodiment in which the bracelet is made up of a series of Y-shaped links forming a single row. A Y-shaped link is defined as a link that has two parallel lateral branches 200, facing each other, extending towards an upstream link. The two branches are separated by a space. On the downstream side, the link includes a central portion 202 extending towards a downstream link, the central portion 202 being sized to fit between the lateral branches of the downstream link.

[0078] In the proposed embodiment, the bracelet includes a special link comprising a hollow link base 204 designed to receive a drawer 220, located approximately in the same position as the base of the upstream link. Thus, the upstream side of the link base has an opening 205 through which the drawer 220 can pass, being partially housed within the hollow portion of the link base.

[0079] The drawer 220 comprises two slides 222, parallel to each other along the longitudinal axis of the bracelet and connected to each other by a connecting element, such as a pin 224. Each slide 222 has a pad 226, which fits into a recess 206 formed in the inner surface of the link base 204. The recesses 206 are delimited by edges against which the pads can abut. The stops thus define the extreme longitudinal positions of the drawer with respect to the link base.

[0080] The slides 222 further include, on their inner edge, a tooth which defines a stop structure 38 of a locking system.

[0081] In the base of the link are mounted pushers 22, which slide against springs not shown. These pushers are fixed to or actuate a finger, which forms a lock 36, intended to cooperate with the tooth of the corresponding slide, to form the locking system.

[0082] Thus, as in the embodiments described above, the drawer 220 can slide longitudinally relative to the link base 204. In a short configuration shown in Figure 7, the drawer 220 is in a proximal position within the link base 204. The locking finger 36 is located on one side of the tooth of the stop structure 38. By pressing the pushers 20, the locking system moves to the unlocked position, and it is possible to move the drawer to a distal position relative to the link base. Releasing the pushers returns the locking system to the locked position. This results in a long configuration, shown in Figure 8.

[0083] A return spring 42 connects the slide to the link base, for example by being attached on one side to the pin, and on the other side to a projecting member 208, disposed in the hollow portion of the link base, such as a boss or a pin. The return spring 42 tends to return the assembly formed by the link base and the slide to its short configuration. Thus, when the link base and the slide are in the long configuration, a A simple press on the pushers to bring the locking system to the unlocked position is enough to automatically return the link base and the drawer to the short configuration.

[0084] The link base and the parts attached to it in longitudinal translation, such as the pushers, define a first element within the meaning of the claims, while the slider defines a second element. The return spring is arranged between the first and second elements so as to exert a force between the first and second elements tending to return them to their proximal position.

Claims

Claims 1. Set of links including: - a first element and a second element movable relative to the first element along a longitudinal direction, between a proximal position and at least one distal position, - a locking system capable of locking the longitudinal position of the first element relative to the second element, said locking system being capable of occupying a locked position and an unlocked position, characterized in that it further comprises a return spring (46) arranged between the first element and the second element, so as to exert a force between the first element and the second element tending to return them to their proximal position.

2. Set of links according to claim 1 comprising: - a first link (10) of which at least one part forms the first element and comprising side walls, with reference to a longitudinal axis defined by the axis of a bracelet in which said set of links is intended to be integrated, - a first lateral link (12), at least part of which forms the second element, arranged laterally relative to the first link, the first link is connected to the first lateral link so that they are movable in longitudinal translation, - a first locking system (20) forming part of the locking system and housed in the first link, capable of locking the relative longitudinal position of the first link with respect to the first lateral link, said first locking system being capable of occupying a locked position and an unlocked position, - a first pusher (22) housed in the first lateral link and arranged to control the locking system and move it from a locked position to an unlocked position.

3. A link assembly according to claim 2, wherein the first link is connected to the first side link by a first pin (16) passing through the first link through oblong openings (18) provided in the side walls, said link assembly further comprising: - a second lateral link (14) of which at least a part forms the second element, said first and second lateral links being arranged on either side of the first link, facing each other, the first lateral link and the second lateral link are securely connected to each other by said first pin (16), so that the first central link is movable in longitudinal translation relative to the lateral links, - a second pusher (22) housed in the second lateral link, said first and second pushers being arranged to control the locking system and move it from a locked position to an unlocked position, the return spring being arranged between, on the one hand, the first link forming part of the first element and, on the other hand, the first lateral link and the second lateral link, forming part of the second element.

4. Assembly according to claim 3, characterized in that the first central link is crossed by an additional fixed pin (40) and in that the return spring (42) connects the first pin (16) and the additional pin (42) of the first central link (10).

5. A link assembly according to claim 3 or claim 4, further comprising: - a second link (10.2) forming part of a second first element, located in the extension of the first link (10), between the first (12) and second (14) lateral links, the latter being offset longitudinally relative to the first (10) and the second (10.2) links, said second central link also comprising lateral walls, the first lateral link and the second lateral link being securely connected to each other by a second pin (16.2) passing through the second link (10.2) through oblong openings (18.2) provided in said side walls, so that the second link is movable in longitudinal translation relative to the side links, - a second locking system (20.2) forming part of the locking system and housed in the second link, capable of locking the relative longitudinal position of the second link (10.2) with respect to the first (12) and the second (14) lateral links, said second locking system being capable of occupying a locked position and an unlocked position, the first and second pushers are arranged to simultaneously control the first and second locking systems, a second return spring (42.2) being arranged between, on the one hand, the second link forming part of the second first element and, on the other hand, the first lateral link and the second lateral link, further forming part of a second second element.

6. Assembly according to claim 5, characterized in that the second central link is crossed by a second additional fixed pin (40.2), and in that the second return spring (42.2) connects the second pin (16.2) and the additional pin (42.2) of the second central link (10.2).

7. Set of links according to one of claims 3 to 6, characterized in that said first locking system (20) comprises a pair of sleeves (24) sliding on the first pin (26), and a pair of studs (30) arranged integrally inside the first central link (10), each stud being intended to cooperate with a sleeve, either the sleeves (24), or the studs (30) alternately comprising a lock (36) each and, the others studs and sleeves comprising a stop structure (38) each, capable of cooperating with the lock, said stop structure being provided with several discrete elements defining at least two relative positions of cooperation between the lock and the stop structure.

8. Set of links according to one of claims 5 or 6 or according to claim 7 in its dependence on claim 5, characterized in that said second locking system (20.2) comprises a pair of sleeves (24.2) sliding on the second pin (16.2), and a pair of studs (30.2) arranged integrally inside the second central link (10.2), each stud being intended to cooperate with a sleeve, either the sleeves (24.2), or the studs (30.2) alternately comprising a lock (36.2) each and, the others studs and sleeves comprising a stop structure (38.2) each, capable of cooperating with the lock, said stop structure being provided with several discrete elements defining at least two relative positions of cooperation between the lock and the stop structure.

9. Assembly according to one of claims 7 or 8, characterized in that the lock (36, 36.2) and the stop structure (38, 38.2) of the first locking system and of the second locking system when it depends on claim 5, are formed by a portion of rack.

10. Assembly according to one of claims 7 to 9, characterized in that said sleeves (24, 24.2) of the first locking system and of the second locking system when it depends on claim 5, are mounted to move against a spring (26, 26.2).

11. Assembly according to one of claims 3 to 8, characterized in that the first pusher (22a) is guided on the first pin (16) and in that the second pusher (22b) when the assembly depends on claim 5, is guided on the second pin (16.2).

12. Assembly according to one of claims 7 to 11, characterized in that said first (22a) and second (22b) pushers comprise a tubular portion (28, 28.2) acting on said sleeves (24, 24.2) of the first locking system and of the second locking system when it depends on claim 5.

13. Link comprising: - a first element and a second element movable relative to the first element in a longitudinal direction between a proximal position and at least one distal position, - a locking system capable of locking the longitudinal position of the first element relative to the second element, said locking system being capable of occupying a locked position and an unlocked position, characterized in that it further comprises a return spring (42) arranged between the first element and the second element, so as to exert a force between the first element and the second element tending to return them to their proximal position.

14. Link according to claim 13, characterized in that it comprises a hollow link base (204) forming said first element, and a drawer (220), forming the second element, slidably mounted in a longitudinal direction on said link base.

15. Link according to claim 14, characterized in that the drawer comprises two slides (222), parallel to each other.

16. Link according to claim 15, characterized in that said slides are connected by a connection member (224).

17. Link according to one of claims 14 or 15, characterized in that each slide comprises a pad (226), taking place in a hollow (206), formed in the inner surface of the link base (204), said recesses being delimited by edges against which the pads (226) are intended to come into abutment, said stops defining the extreme longitudinal positions of the drawer with reference to the link base.

18. Link according to one of claims 15 to 16, characterized in that the return spring (42) is arranged between the connection member (224) and a projecting member (208), arranged in the hollow portion of the link.

19. Bracelet comprising a set of links according to one of claims 1 to 12, or comprising a link according to one of claims 13 to 17.

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