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EP3170420A1 - Bracelet clasp comprising a device for adjusting the length of the bracelet - Google Patents

Bracelet clasp comprising a device for adjusting the length of the bracelet Download PDF

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Publication number
EP3170420A1
EP3170420A1 EP15195690.1A EP15195690A EP3170420A1 EP 3170420 A1 EP3170420 A1 EP 3170420A1 EP 15195690 A EP15195690 A EP 15195690A EP 3170420 A1 EP3170420 A1 EP 3170420A1
Authority
EP
European Patent Office
Prior art keywords
lever
clasp
bracelet
support
clasp according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15195690.1A
Other languages
German (de)
French (fr)
Other versions
EP3170420B1 (en
Inventor
Elio Granito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dexel SA
Original Assignee
Dexel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dexel SA filed Critical Dexel SA
Priority to EP15195690.1A priority Critical patent/EP3170420B1/en
Publication of EP3170420A1 publication Critical patent/EP3170420A1/en
Application granted granted Critical
Publication of EP3170420B1 publication Critical patent/EP3170420B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means

Definitions

  • the present invention relates to a clasp for bracelets, in particular for adjusting the length of the bracelet.
  • the invention also relates to a length adjustment device and a wristwatch having the clasp and / or the length adjustment device.
  • Bracelets for wristwatches generally include means for adjusting the length of the wristband.
  • the free end of one of the two strands of the bracelet comprises a series of holes distributed in the longitudinal direction of the bracelet.
  • the free end of the other bracelet strand includes a connection device, for example a pin buckle, for joining the two strands by inserting the barb in the hole corresponding to the desired length.
  • the length of the bracelet is adjusted by removing or adding a link in one or both strands of the bracelet.
  • the bracelet length can be adjusted independently of the state - closed or open - of the clasp.
  • the patent document CH700230 A2 discloses a clasp comprising a device for adjusting the length of the bracelet, the device comprising a locking member pivotally mounted on a frame.
  • the pivoting locking member also fulfills the role of gripping member, intended to be pivoted by the wearer to allow unlocking. Because of the pivoting, this gripping member occupies a lot of space in the unlocked position.
  • the unlocking is likely to be activated accidentally, for example if the pivoting gripping member clings to an external object, for example to a garment.
  • the patent document CH 698 981 B1 discloses a strap length adjuster, which can be activated by pressing a control member in the form of a button, which itself acts on a pivoting locking member.
  • the entire length adjustment device is disposed below a cover covering the clasp. For this reason, the clasp is thick in a direction normal to the clasp plane.
  • this device has a large number of parts and is complex. Therefore, the manufacture of this bulky clasp is comparatively expensive.
  • the present invention seeks to solve the above problems.
  • the present invention has as its object a length adjustment device which allows a shortening of the length without it being necessary to actively actuate the control member of the length adjustment device.
  • This has the advantage that the user can perform a shortening by simply pushing a strand of bracelet in the direction of the clasp, so as to bring the end of the strand of the clasp by shortening the bracelet. The shortened position is then locked automatically.
  • Another object is to provide a clasp that is completely separate and independent of the closure mechanism of the clasp, or a length adjustment device that can be associated with any type of clasp, is it a clasp with a folding clasp or buckle to barb, or another type of bracelet clasp.
  • the present invention relates to a clasp for bracelets of the type comprising first and second free ends, the clasp having first and second strap fastening members to be respectively secured to said first and second free ends of the bracelet, the clasp comprising a closure mechanism for opening and closing the clasp; a first support carrying a device for adjusting the length of the bracelet, the first support housing a moving part connected to one of the two fixing members, the first support carrying a stop device arranged to block the displacement of the movable portion in at least one direction in the longitudinal direction of the bracelet.
  • the present invention relates to a clasp for bracelets of the type comprising first and second free ends, the clasp comprising first and second strap fastening members intended to be secured respectively to said first and second free ends of the bracelet, said fixing members being movable relative to each other between at least one open position and a closed position, in service, in which they are closer to each other than in the open position;
  • the clasp comprising: a closure mechanism for opening and closing the clasp; a first support carrying a device for adjusting the length of the bracelet, the first support housing a moving part connected to one of the two fasteners, the first support carrying a stop device arranged to block the movement of the moving part in at least one direction in the longitudinal direction of the bracelet, characterized in that the stop device comprises at least one lever pivotally mounted on said first support, the lever comprising an actuating member intended to be depressed to rotate the lever and thus unlock the moving part and allow its displacement for the adjustment of the length of the bracelet.
  • the present invention relates to a clasp comprising: a closure mechanism for opening and closing the clasp; a support carrying a device for adjusting the length of the bracelet, the support housing a mobile part connected to a fixing member, the support carrying a stop device cooperating with the mobile part by blocking the movement of the latter in at least one direction in the longitudinal direction of the bracelet, characterized in that the stop device comprises at least one lever pivotally mounted on said first support, the lever comprising an actuating member, intended to be depressed to rotate the lever and thus unlock the moving part and allow its displacement for the adjustment of the length of the bracelet.
  • the present invention relates to a clasp comprising: a closure mechanism for opening and closing the clasp; a support carrying a device for adjusting the length of the bracelet, the support housing a moving part connected to a fixing member, and the support carrying a stop device arranged to block the movement of the moving part in at least one direction in longitudinal direction of the bracelet, characterized in that that the stop device comprises at least one lever pivotally mounted on said support, the lever having a stop structure, and in that, when adjusting the length of the bracelet, the lever is pivoted to unlock the part mobile of said stop structure, to allow movement of the moving part and thus the adjustment of the length of the bracelet.
  • the present invention relates to a length adjustment device comprising a first support housing a moving part connected to one of the two fasteners, the support carrying a stop device cooperating with the movable part by blocking the movement of the latter in at least one direction in the longitudinal direction of the bracelet, characterized in that the stop device comprises at least one lever pivotally mounted on said first support, the lever comprising an actuating member, intended to be depressed to rotate the lever and thus unlock the moving part and allow its movement for the adjustment of the length of the bracelet.
  • the present invention relates to a wristwatch having a clasp according to the invention.
  • the present invention relates to a clasp, in particular a clasp for a bracelet.
  • the invention relates to a clasp for a timepiece bracelet.
  • the bracelet can be of any type, such as for example flexible plastic material, leather, or made by an assembly of metal links.
  • the bracelet consists of two longitudinal portions of the bracelet, respectively in the form of first and second strands (not shown), and each of the strands is such that one of its ends is connected to the watch case while that the other is intended to be attached to a fastener of the clasp.
  • the end of one of the two strands has a series of holes, and the length is adjusted by choosing the hole in which the barb is inserted.
  • the clasp of the invention 1 is a clasp of the unfolding type or folding clasp.
  • This type of clasp is known, for example, from patent documents EP 0913106 , CH700230 , EP2452583 , EP2361523 and CH704335 .
  • the clasp has at least two longitudinal clasp segments. In the present description, these longitudinal segments are also referred to as "the blades", or the "arms" of the clasp.
  • a clasp comprises two or three longitudinal segments.
  • the clasp according to the embodiment shown to Figures 1 to 7 is a clasp with two blades 51, 52. Of course, it would be quite possible to achieve the clasp of the invention with a folding clasp with three blades.
  • the clasp of the invention is a buckle-type clasp.
  • the fine adjustment device of the strap length according to the invention can be adapted to any type of clasp and is not limited to a particular type of clasp.
  • the clasp has first and second blades 51 and 52. As can be seen in the Figure 3 , the blades 51 and 52 are slightly curved, to adapt the entire clasp to the wrist contour of a wristwatch wearer.
  • the blade 51 has two half-blades or parallel branches, made integral with each other by the first support 4 at the first end of the blade 51 and a transverse spacer 53.
  • the first support 4 also carries the first member
  • the support assembly 4 and blade 51 can be considered as blade 51, the support 4 being then an element of the blade 51.
  • the first end of the blade 51 forms the support 4, the first fixing member 1 thus being connected to the first end of the blade 51.
  • the first fastener 1 comprises two nails.
  • the end of a first strand of bracelet can be attached to these nails by means of the holes which are often towards the free end of a flexible bracelet strand.
  • the distance between the two nails 1 can be standardized and corresponds to the spacing of two successive holes at the end of a bracelet strand.
  • an alternative method of attachment for example a spring bar, to constitute the first fixing member 1.
  • the first blade 51 is hinged to the first end of the second blade 52.
  • the second blade 52 is connected, towards its second end, to the second support 54, which contains the second attachment member 2 of the clasp.
  • the second fastening member 2 comprises a spring bar 2 held in a conventional manner between the two side walls or between two horns of the second support 54.
  • the open and closed positions of the clasp 1 are shown at Figures 1 and 2 respectively.
  • the first and second fasteners 1, 2 are remote and close together, respectively.
  • the first and second blades 51 and 52 are locked relative to one another, and this position also represents the position of service or use, allowing, for example, to wear a wristwatch without it being detached from the wrist of the wearer.
  • the second blade 52 is placed (and locked) in the space between the two half-blades 51, as can be seen in FIG. figure 2 .
  • the first end of the first blade 51 is then close to the second end of the second blade 52.
  • the second blade 52 also has two half-blades or branches. Towards the second end, the branches of the second blade 52 comprise outer lateral thickenings 55 intended to be retained by the edges of two recesses 56, arranged in the inner and / or lower faces of the two branches of the first blade 51.
  • the branches of the second blade 52 can be brought closer to each other by pressing the pushers 57, against the force of a spring which is part of the closing mechanism and which is in a housing 58 provided for this purpose .
  • This approximation causes the disengagement of the excess thicknesses 55 of their housing 56 inside the two branches 51 and allows, therefore, the deployment of the second blade 52 relative to the first blade 51 by pivoting to move to the open clasp position as shown in figure 1 .
  • the mechanism or device 5 for adjusting the length of the bracelet is disposed towards the first end of the first blade 51.
  • the adjusting device 5 is associated with and / or secured to the first support 4 also carrying the first fastening member 1.
  • the length adjusting device 5 and the control member 57 (the pushers 57) for opening and closing the clasp are respectively arranged at the two fasteners, and not at the same fastener.
  • the present invention does not exclude the possibility that the length adjusting device 5 and the control member 57 are associated with the same fastening member.
  • the structure is the operation of the wrist length adjustment device is described in more detail with reference to Figures 4 to 6 .
  • the adjustment device comprises a movable part 6, which comprises or is secured to the first fastener 1.
  • the movable part 6 is arranged to be able to perform a linear displacement along a longitudinal axis of the clasp and / or the bracelet, this displacement thus producing the shortening or the lengthening of the length, according to the direction.
  • axis or longitudinal direction of the bracelet is meant the direction in which the bracelet would extend on either side of the clasp if it were unrolled and laid flat.
  • the first support 4 includes lateral guide structures 16, 16 ', enabling the moving part to move along the longitudinal direction of the bracelet.
  • the first support 4 comprises in particular two side walls 18, 18 ', whose inner surfaces each comprise a groove 16, 16'.
  • the grooves form guide rails for the movable part 6.
  • the movable part 6 consists of a plate, the thickness of which is such that it allows insertion into the grooves 16, 16 as we know it from a drawer.
  • the wafer 6 has two lateral edges 15, 15 'whose heights are slightly smaller than the heights of the grooves 16, 16', so as to hold the wafer while allowing it to move in the longitudinal axis.
  • the guide of the wafer 6 is reinforced by the bridge or bottom 7, which connects the two side walls 18, 18 'of the first support 4. The plate 6 can thus slide on the bottom 7 in the direction of the longitudinal axis of the bracelet .
  • the first support 4 comprises one or two stops arranged so as to prevent the complete detachment of the mobile part of the support 4.
  • the stop or stops are not shown in the drawings.
  • the lower face of the wafer 6 has a groove or central longitudinal slot. The slot does not cross the wafer over its entire length, so that the ends of the slot can act as a stop.
  • a pin (not shown) is fixedly housed in the hole 27 of the bottom 7 and protrudes from the upper surface of the bottom 7 to extend into the aforementioned longitudinal central slot. When moving the movable portion 6, the slot moves along the pin, to the end of the slot. At this time, the pin stops moving the moving part in the same direction. The same principle applies for moving the moving part in the other direction.
  • the length adjustment device comprises a stop device.
  • the stop device cooperates with the mobile part 6 by blocking the displacement of the latter in at least one longitudinal direction of the bracelet.
  • the stop device prevents the involuntary lengthening of the length.
  • the stop device comprises the lever 8 pivotally mounted on the first support 4.
  • the side wall 18 of the support 4 comprises an outer lateral bulge 21, in which is worked a housing 17 for the stop device. Downward, the bulge 21 forms a bottom and upwardly a ceiling of said housing 17. Between the bottom and the ceiling, a pivot shaft 19 is arranged, defining the pivot axis 13. In the embodiment shown, the pivot axis 13 of the lever 8 is normal with respect to the general plane of the bracelet.
  • the shaft 19 is fitted on the sleeve and / or the sleeve 20.
  • the lever 18 comprises a cylindrical hole 22, in which the shaft 19 is fitted. While the shaft 19 is fixedly mounted between the bottom and the ceiling of the housing 17, the lever can pivot about the axis 13 defined by the shaft 19.
  • the shaft 19 can, for example, be made in the form of a screw having an external thread, passing through the hole 24 in the bottom of the housing 17, passing through the housing is being screwed into an internal thread (not shown) tapped in the ceiling of the housing 17.
  • the bushing 20 may make the pivoting movement of the lever 8 more fluid or more precise, but it may very well be omitted. It is then sufficient to choose the dimensions of the spring 14 and the shaft 19 so that the inner diameter of the turns of the torsion spring leaves a small clearance with respect to the outer diameter of the shaft 19, so that the latter can be fitted directly in the turns of the spring.
  • the lever 8 comprises a stop structure or a latch 11.
  • the lever 8 also comprises a control or actuating member 9.
  • the stop structure 11 and the actuating member are respectively towards the opposite ends of the lever 8.
  • the lever 8 has first and second ends, the actuating member 9 and the stop structure 11 being located respectively to said first and second ends.
  • the actuating member 9 and the stop structure 11 are located on either side of the pivot axis 13 of the lever 8.
  • the actuating member 9 and the stop structure 11 are integral with each other.
  • the stop structure 11 and the actuating member 9 are formed in one piece, of a single continuous material.
  • the latch 11 has a convexity in the form of a half-sphere.
  • the actuating member 9 comprises a bearing surface 25, which may comprise roughnesses and / or parallel grooves, which are intended to increase the friction between the user's finger and the surface 25. of the actuating member.
  • lever 8 also comprises a housing 26 for the bushing 20 and for the turns or the body of the torsion spring 14.
  • the lever 8 is thus pivotally mounted in the housing 17 by means of the shaft 19 passing through the hole 22 of the lever.
  • the shaft then passes through the bushing 20, before being anchored in the ceiling of the housing 17.
  • the bushing 20 is guided through the turns and / or the body of the torsion spring 14.
  • the torsion spring 14 comprises turns and / or a body, which is coaxial with the pivot axis of the lever 9. Note that one of the branches of the torsion spring 14 rests against an inner face of the lever 8, while the other arm bears against an inner face of the housing 17.
  • the torsion spring 14 is thus housed so as to return the lever 8 in the locking and / or locking position. It is also possible to provide holes and / or recesses in the lever and / or in the support 4 to accommodate the free branches of the torsion spring (not shown).
  • the first support 4 comprises a hole 23.
  • This hole allows the lever 8 to cooperate with the mobile part 6. More precisely, the hole 23 is arranged in the side wall 18 of the first support 4, exactly at the groove 16 in the which is guided the movable portion 6. The orientation and / or the extension of the hole is perpendicular to the longitudinal direction of the bracelet and in the general plane of the clasp.
  • the hole 23 may be replaced by a notch or by any other type of access to the movable part 6 and in particular to the toothing of the latter. This depends on the concrete embodiment of the clasp of the invention.
  • the invention contemplates also to arrange the lever 8 and the movable part 6 on the support 4 so that no indentation or no hole is necessary to allow the cooperation of the pivoting lever with the movable part.
  • the movable portion 6 has two edges and / or side faces 15. A series of notches 12 and / or a toothing is arranged in at least one of said edges and / or side faces.
  • the stop structure 11 interacts directly with a notch 12a of a series of notches 12 arranged in said moving part 6. More particularly, the lever 8 is arranged such that said stop structure 11 of the lever 8 passes through said hole 15 to cooperate with a notch 12a of said movable part 6.
  • each of the notches 12 is in the form of a cavity in the shape of a half-sphere.
  • the concave shape of the notches 12 is complementary to the convex shape of the stop structure 11, in order to achieve a cooperation which makes it possible to block the moving part 6 in the locked position and / or the service position.
  • the notches 12 and the stop structure 11 may have other complementary shapes, provided that they allow the desired locking function when the stop structure 11 is engaged.
  • the operation of the stop device 7 can be understood with reference to the Figures 6 and 7 .
  • These figures show a section along line AA of the figure 3 .
  • the section extends in a plane that is parallel or that corresponds to the general plane of the clasp.
  • the support 4, the plate 6, the lever 8 and the shaft 19 are all cut in the view of the figure 6 .
  • the spring 14 is not visible in the Figures 6 and 7 because the cut passes beneath the housing 23 of the spring 14 ( Fig. 5 ).
  • FIGs 6 and 7 show in particular the cooperation and / or the interaction between the lever 8 and the moving part 6.
  • the stop device is in the stop and / or lock position, in which an extension of the bracelet is not possible.
  • the stop structure 11 is placed in one of the notches of the series of notches 12 of the movable part 6.
  • the lock 11 passes through the hole 23 in the side wall 18 of the support 4 to end in a notch of the series of notches 12.
  • the rest position of the length adjustment device and characterized by the absence of any action and any action on the part of a carrier.
  • the lever 8 is held in a locking position.
  • the lever 8 is held in this position by the force of a torsion spring 14.
  • a characteristic of the illustrated embodiment is that, in the rest position (in the absence of actuation of the actuating member 9), the lever 8 is free to pivot in one direction only, here in the clockwise, but not in the opposite direction.
  • the lever 8 and in particular one end of the lever comprising the actuating member 9, is directly accessible by a user, preferably from outside the clasp.
  • the lever 8 is pivotally mounted on said first support 4 so that the actuating member 9 of the lever 8 is accessible from the outside when the clasp is closed.
  • this embodiment allows an actuation of the organ 9 from the outside whether the clasp is closed or open.
  • the lever 8 is arranged to pivot on said first support 4 so that at least a portion of the lever 8 is flush with at least a portion of the outer surface of the support 4 carrying the stop device .
  • the outer surface 25 of at least a portion of the lever 8 and / or the actuating member may be aligned in the extension of the outer sidewall 18 of the support 4.
  • the support 4 has a bulge 21 to accommodate the lever and / or stop device, at least a portion of an outer surface of the lever 8 and / or its actuator 9 may be flush with the outer surface formed by the bulge 21.
  • the outer surface 25 of the lever 8 and / or its actuating member 9 forms a common and / or continuous surface with the outer surface of the support 4 at the place where the lever 8 is housed in the support 4.
  • the entire length adjustment device can thus integrate harmoniously into the general contour of the clasp, and the actuating member 9 can be actuated from the outside by a user and / or carrier, without opening the clasp.
  • At least one part (for example another part) of the lever 8 and / or its actuating member 9 rises relative to the outer surface of the support 4 and / or exceeds the contours or external dimensions of the support 4. It is preferably at this point where the actuating member 9 is easily accessible, because the support 4 and / or its outer surface does not interfere with the access of the user's finger to the actuating member 9 and / or the depression of this member by the finger. As can be seen at Figure 6 , the actuating member 9 extends beyond the end of the blade 51 serving as support 4, in the longitudinal direction of the clasp, creating an overhang or a cantilever. It is precisely at the level of the overhang that the actuating member 9 can be easily depressed by a user, causing the lever 9 to pivot.
  • the user actively activates the stop device, by pressing the actuating member 9, to rotate the lever 8 and disengage the latch 11 of the notch of the moving part 6 in which he is placed ( figure 7 ).
  • the actuating member is depressed by the user, the movable portion 6 can be moved in both directions 31 and 32, to shorten or lengthen the bracelet, respectively.
  • the stop device comprises the lever 8, in particular its stop structure 11, the pivot shaft 19 and the spring 14.
  • the series of notches 12 disposed in the movable part 6 is also part of stop device.
  • the entire stop device is associated with and / or attached to the first support 4.
  • the length adjustment device 5 the latter comprises, according to a preferred embodiment, in addition to the stop device, the entire movable part 6, and the guide means for the latter, such as grooves 16, 16 ', arranged in the support 4.
  • the wrist length adjuster of the invention has several advantages.
  • the device has very few separate parts.
  • the adjusting device comprises the lever 8, the shaft 19 and the spring 14.
  • the lever 8 operates in the faith as an actuating member and as a lock.
  • the toothing 12 may be suitably integrated and / or attached in a side face of the movable part, without a separate piece bearing the toothing is necessary.
  • the housing 17 of the adjusting device can be arranged in a side wall 18 of the support 4, without increasing the width of the clasp, that is to say the extension of the clasp in a direction perpendicular to the longitudinal direction of the bracelet, in the general plan of the clasp.
  • the width of the clasp is essentially defined by the width of the clasp itself, for example by the closing mechanism and / or by the pushers 57 of the latter.
  • the length adjustment device does not increase the thickness of the clasp, that is to say the size of the clasp along an axis which is normal to the general plane of the clasp. clasp. Indeed, the length adjustment device is disposed laterally relative to the clasp, and can be achieved without stacking parts along the normal direction relative to the general plane of the clasp.
  • the stop device is asymmetrical and / or arranged laterally on one side only in the longitudinal direction of the bracelet, which constitutes another advantage of the clasp of the invention. For example, it is not necessary to push two pushers simultaneously to adjust the length, and the number of pieces can be further reduced in this way.
  • the adjustment of the bracelet length is independent of the closure mechanism of the bracelet. It is thus possible to adjust the length without having to open the clasp.
  • a shortening can be performed without even actuating the actuating member of the length adjustment device. Just push the bracelet strand connected to the first fastener 1 in the corresponding direction (arrow 32) to shorten the bracelet. This function may be desirable, since it can be performed very quickly and can find a length that is pleasant for the wearer in case the watch slides along the wrist because the bracelet is too long.
  • control or actuating member 9 is a separate part of the lever 8.
  • the control member could be in the form of a pusher or a slider, arranged so as to act on the lever 8.
  • the lever 8 may still include the latch 11 and operate similarly to the embodiment shown in the figures.

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Abstract

L'invention concerne un fermoir (10) pour bracelets comprenant des moyens de fermeture du fermoir permettant de fermer et ouvrir le fermoir et un dispositif de réglage (5) de longueur du bracelet comportant un levier (8) montant pivotant sur un support (4). Le levier comporte une structure d'arrêt (11) coopérant avec une partie mobile (6) du fermoir portant un premier organe de fixation (1) de brin de bracelet. La structure d'arrêt est agencée de façon à bloquer le déplacement de la partie mobile dans au moins une direction longitudinale du bracelet. Le levier comporte également un organe d'actionnement (9), destiné à être enfoncé pour faire pivoter le levier et ainsi débloquer la partie mobile et permettre son déplacement pour le réglage de la longueur du bracelet.The invention relates to a clasp (10) for bracelets comprising clasp closing means for closing and opening the clasp and a wrist length adjustment device (5) comprising a lever (8) pivotally mounted on a support (4). ). The lever comprises a stop structure (11) cooperating with a movable part (6) of the clasp carrying a first fastener (1) strand bracelet. The stop structure is arranged to block the displacement of the movable portion in at least one longitudinal direction of the bracelet. The lever also comprises an actuating member (9), intended to be depressed to pivot the lever and thus unlock the moving part and allow its movement for adjusting the length of the bracelet.

Description

Domaine techniqueTechnical area

La présente invention concerne un fermoir pour bracelets, en particulier permettant de régler la longueur du bracelet. L'invention concerne également un dispositif de réglage de longueur et une montre-bracelet comportant le fermoir et/ou le dispositif de réglage de longueur.The present invention relates to a clasp for bracelets, in particular for adjusting the length of the bracelet. The invention also relates to a length adjustment device and a wristwatch having the clasp and / or the length adjustment device.

Etat de la technique et problèmes à l'origine de l'inventionState of the art and problems at the origin of the invention

Les bracelets pour montres-bracelets comportent généralement des moyens pour régler la longueur du bracelet. Typiquement dans le cas de bracelets en cuir ou plastique, l'extrémité libre d'un des deux brins du bracelet comporte une série de trous distribués en direction longitudinale du bracelet. L'extrémité libre de l'autre brin de bracelet comporte un dispositif de connexion, par exemple une boucle à ardillon, permettant de joindre les deux brins en insérant l'ardillon dans le trou correspondant à la longueur souhaitée. Dans le cas des bracelets à maillons métalliques, la longueur du bracelet est ajustée en enlevant ou ajoutant un maillon dans un ou dans les deux brins du bracelet.Bracelets for wristwatches generally include means for adjusting the length of the wristband. Typically in the case of leather or plastic bracelets, the free end of one of the two strands of the bracelet comprises a series of holes distributed in the longitudinal direction of the bracelet. The free end of the other bracelet strand includes a connection device, for example a pin buckle, for joining the two strands by inserting the barb in the hole corresponding to the desired length. In the case of metal link bracelets, the length of the bracelet is adjusted by removing or adding a link in one or both strands of the bracelet.

L'état de la technique connaît des fermoirs pour montres-bracelets qui permettent un réglage fin de la longueur du bracelet. Un tel réglage fin est souhaitable pour adapter de manière précise la longueur du bracelet au poignet du porteur d'une montre-bracelet. D'autre part, comme soulevé dans le document EP 2361523 , la taille du poignet d'un porteur peut varier avec les changements de température par exemple.The state of the art knows clasps for wristwatches that allow a fine adjustment of the length of the bracelet. Such a fine adjustment is desirable to precisely adjust the length of the bracelet to the wrist of the wearer of a wristwatch. On the other hand, as raised in the document EP 2361523 , the size of a wearer's wrist can vary with temperature changes for example.

Comme mentionné dans les documents EP2452583 et CH700230 , il est souhaitable que la longueur de bracelet puisse être réglée indépendamment de l'état - fermé ou ouvert - du fermoir.As mentioned in the documents EP2452583 and CH700230 , it is desirable that the bracelet length can be adjusted independently of the state - closed or open - of the clasp.

Le document brevet CH700230 A2 décrit un fermoir comportant un dispositif de réglage de la longueur de bracelet, le dispositif comportant un organe de verrouillage monté pivotant sur un bâti. L'organe de verrouillage pivotant remplit également le rôle d'organe de préhension, destiné à être pivoté par le porteur afin de permettre le déverrouillage. A cause du pivotement, cet organe de préhension occupe beaucoup d'espace en position déverrouillée. D'autre part, le déverrouillage est susceptible d'être activé accidentellement, par exemple si l'organe de préhension pivotant s'accroche à un objet extérieur, par exemple à un vêtement.The patent document CH700230 A2 discloses a clasp comprising a device for adjusting the length of the bracelet, the device comprising a locking member pivotally mounted on a frame. The pivoting locking member also fulfills the role of gripping member, intended to be pivoted by the wearer to allow unlocking. Because of the pivoting, this gripping member occupies a lot of space in the unlocked position. On the other hand, the unlocking is likely to be activated accidentally, for example if the pivoting gripping member clings to an external object, for example to a garment.

Le document brevet CH 698 981 B1 décrit un dispositif de réglage de longueur pour bracelet, qui peut être activé en appuyant sur un organe de commande sous la forme d'un bouton, qui agit lui-même sur un élément de verrouillage pivotant. L'ensemble du dispositif de réglage de longueur est disposé au-dessous d'un capot couvrant le fermoir. Pour cette raison, le fermoir est épais dans une direction normale au plan du fermoir. En outre, ce dispositif compte un grand nombre de pièces et est complexe. Par conséquent, la fabrication de ce fermoir volumineux est comparativement coûteuse.The patent document CH 698 981 B1 discloses a strap length adjuster, which can be activated by pressing a control member in the form of a button, which itself acts on a pivoting locking member. The entire length adjustment device is disposed below a cover covering the clasp. For this reason, the clasp is thick in a direction normal to the clasp plane. In addition, this device has a large number of parts and is complex. Therefore, the manufacture of this bulky clasp is comparatively expensive.

La présente invention cherche à résoudre les problèmes ci-dessus.The present invention seeks to solve the above problems.

D'autre part, la présente invention a comme objectif un dispositif de réglage de longueur qui permet un raccourcissement de la longueur sans qu'il soit nécessaire d'actionner activement l'organe de commande du dispositif de réglage de longueur. Ceci a l'avantage que l'utilisateur peut effectuer un raccourcissement en poussant simplement un brin de bracelet dans la direction du fermoir, de manière à rapprocher l'extrémité du brin du fermoir en raccourcissant le bracelet. La position raccourcie est ensuite verrouillée automatiquement.On the other hand, the present invention has as its object a length adjustment device which allows a shortening of the length without it being necessary to actively actuate the control member of the length adjustment device. This has the advantage that the user can perform a shortening by simply pushing a strand of bracelet in the direction of the clasp, so as to bring the end of the strand of the clasp by shortening the bracelet. The shortened position is then locked automatically.

Un autre objectif est de fournir un fermoir qui est complètement séparé et indépendant du mécanisme de fermeture du fermoir, ou encore un dispositif de réglage de longueur qui peut être associé avec tout type de fermoir, soit-il un fermoir à boucle déployante ou à boucle à ardillon, ou un autre type de fermoir de bracelet.Another object is to provide a clasp that is completely separate and independent of the closure mechanism of the clasp, or a length adjustment device that can be associated with any type of clasp, is it a clasp with a folding clasp or buckle to barb, or another type of bracelet clasp.

Résumé de l'InventionSummary of the Invention

La présente invention a pour objet un fermoir pour bracelets du type comprenant des première et second extrémités libres, le fermoir comportant des première et second organes de fixation du bracelet destinés à être rendus respectivement solidaires desdites première et seconde extrémités libres du bracelet, le fermoir comportant un mécanisme de fermeture permettant d'ouvrir et de fermer le fermoir; un premier support portant un dispositif de réglage de la longueur du bracelet, le premier support logeant une partie mobile connectée à un des deux organes de fixation, le premier support portant un dispositif d'arrêt agencé pour bloquer le déplacement de la partie mobile dans au moins un sens en direction longitudinale du bracelet.The present invention relates to a clasp for bracelets of the type comprising first and second free ends, the clasp having first and second strap fastening members to be respectively secured to said first and second free ends of the bracelet, the clasp comprising a closure mechanism for opening and closing the clasp; a first support carrying a device for adjusting the length of the bracelet, the first support housing a moving part connected to one of the two fixing members, the first support carrying a stop device arranged to block the displacement of the movable portion in at least one direction in the longitudinal direction of the bracelet.

Dans un aspect, la présente invention concerne un fermoir pour bracelets du type comprenant des première et seconde extrémités libres, le fermoir comportant des première et second organes de fixation du bracelet destinés à être rendus respectivement solidaires desdites première et seconde extrémités libres du bracelet, lesdits organes de fixation étant mobiles l'un par rapport à l'autre entre au moins une position ouverte et une position fermée, de service, dans laquelle ils sont plus proches l'un de l'autre que dans la position ouverte; le fermoir comportant: un mécanisme de fermeture permettant d'ouvrir et de fermer le fermoir; un premier support portant un dispositif de réglage de la longueur du bracelet, le premier support logeant une partie mobile connectée à un des deux organes de fixation, le premier support portant un dispositif d'arrêt agencé pour bloquer le déplacement de la partie mobile dans au moins un sens en direction longitudinale du bracelet, caractérisé en ce que le dispositif d'arrêt comporte au moins un levier monté pivotant sur ledit premier support, le levier comportant un organe d'actionnement destiné à être enfoncé pour faire pivoter le levier et ainsi débloquer la partie mobile et permettre son déplacement pour le réglage de la longueur du bracelet.In one aspect, the present invention relates to a clasp for bracelets of the type comprising first and second free ends, the clasp comprising first and second strap fastening members intended to be secured respectively to said first and second free ends of the bracelet, said fixing members being movable relative to each other between at least one open position and a closed position, in service, in which they are closer to each other than in the open position; the clasp comprising: a closure mechanism for opening and closing the clasp; a first support carrying a device for adjusting the length of the bracelet, the first support housing a moving part connected to one of the two fasteners, the first support carrying a stop device arranged to block the movement of the moving part in at least one direction in the longitudinal direction of the bracelet, characterized in that the stop device comprises at least one lever pivotally mounted on said first support, the lever comprising an actuating member intended to be depressed to rotate the lever and thus unlock the moving part and allow its displacement for the adjustment of the length of the bracelet.

Dans un aspect, la présente invention concerne un fermoir comportant: un mécanisme de fermeture permettant d'ouvrir et de fermer le fermoir; un support portant un dispositif de réglage de la longueur du bracelet, le support logeant une partie mobile connectée à un organe de fixation, le support portant un dispositif d'arrêt coopérant avec la partie mobile en bloquant le déplacement de cette dernière dans au moins un sens en direction longitudinale du bracelet, caractérisé en ce que le dispositif d'arrêt comporte au moins un levier monté pivotant sur ledit premier support, le levier comportant un organe d'actionnement, destiné à être enfoncé pour faire pivoter le levier et ainsi débloquer la partie mobile et permettre son déplacement pour le réglage de la longueur du bracelet.In one aspect, the present invention relates to a clasp comprising: a closure mechanism for opening and closing the clasp; a support carrying a device for adjusting the length of the bracelet, the support housing a mobile part connected to a fixing member, the support carrying a stop device cooperating with the mobile part by blocking the movement of the latter in at least one direction in the longitudinal direction of the bracelet, characterized in that the stop device comprises at least one lever pivotally mounted on said first support, the lever comprising an actuating member, intended to be depressed to rotate the lever and thus unlock the moving part and allow its displacement for the adjustment of the length of the bracelet.

Dans un aspect, la présente invention concerne un fermoir comportant: un mécanisme de fermeture permettant d'ouvrir et de fermer le fermoir; un support portant un dispositif de réglage de la longueur du bracelet, le support logeant une partie mobile connectée à un organe de fixation, et le support portant un dispositif d'arrêt agencé pour bloquer le déplacement de la partie mobile dans au moins un sens en direction longitudinale du bracelet, caractérisé en ce que le dispositif d'arrêt comporte au moins un levier monté pivotant sur ledit support, le levier comportant une structure d'arrêt, et en ce que, lors du réglage de la longueur du bracelet, le levier est amené à pivoter pour débloquer la partie mobile de ladite structure d'arrêt, pour permettre le déplacement de la partie mobile et ainsi le réglage de la longueur du bracelet.In one aspect, the present invention relates to a clasp comprising: a closure mechanism for opening and closing the clasp; a support carrying a device for adjusting the length of the bracelet, the support housing a moving part connected to a fixing member, and the support carrying a stop device arranged to block the movement of the moving part in at least one direction in longitudinal direction of the bracelet, characterized in that that the stop device comprises at least one lever pivotally mounted on said support, the lever having a stop structure, and in that, when adjusting the length of the bracelet, the lever is pivoted to unlock the part mobile of said stop structure, to allow movement of the moving part and thus the adjustment of the length of the bracelet.

Dans un aspect, la présente invention concerne un dispositif de réglage de la longueur comportant un premier support logeant une partie mobile connectée à un des deux organes de fixation, le support portant un dispositif d'arrêt coopérant avec la partie mobile en bloquant le déplacement de cette dernière dans au moins un sens en direction longitudinale du bracelet, caractérisé en ce que le dispositif d'arrêt comporte au moins un levier monté pivotant sur ledit premier support, le levier comportant un organe d'actionnement, destiné à être enfoncé pour faire pivoter le levier et ainsi débloquer la partie mobile et permettre son déplacement pour le réglage de la longueur du bracelet.In one aspect, the present invention relates to a length adjustment device comprising a first support housing a moving part connected to one of the two fasteners, the support carrying a stop device cooperating with the movable part by blocking the movement of the latter in at least one direction in the longitudinal direction of the bracelet, characterized in that the stop device comprises at least one lever pivotally mounted on said first support, the lever comprising an actuating member, intended to be depressed to rotate the lever and thus unlock the moving part and allow its movement for the adjustment of the length of the bracelet.

Dans un aspect, la présente invention concerne une montre-bracelet munie d'un fermoir selon l'inventionIn one aspect, the present invention relates to a wristwatch having a clasp according to the invention.

Brève description des dessinsBrief description of the drawings

Les caractéristiques et les avantages de l'invention apparaîtront plus clairement à la lecture d'une description d'une forme d'exécution préférentielle, donnée uniquement à titre d'exemple, nullement limitative en se référant aux figures schématiques dans lesquelles:

  • La figure 1 est une vue en perspective d'un fermoir de bracelet selon un mode de réalisation de la présente invention. Le fermoir est montré en position ouverte.
  • La figure 2 est une vue en perspective du fermoir montré à la figure 1 en position fermée.
  • La figure 3 est une vue latérale en position fermé du fermoir montré à la figure 2.
  • La figure 4 est une vue en perspective de trois-quarts droite du fermoir montré aux figures 1 à 3, dans lequel le dispositif de réglage de longueur de bracelet est montré en éclaté.
  • La figure 5 est une vue en perspective de trois-quarts gauche du fermoir montré aux figures 1 à 4, dans lequel le dispositif de réglage de longueur de bracelet en montré en éclaté.
  • La figure 6 est une vue partielle en coupe selon A-A de la figure 3.
  • La figure 7 est une vue partielle en coupe semblable à la figure 6, dans lequel l'organe de contrôle est actionné.
The features and advantages of the invention will emerge more clearly on reading a description of a preferred embodiment, given solely by way of example, in no way limiting with reference to the schematic figures in which:
  • The figure 1 is a perspective view of a bracelet clasp according to an embodiment of the present invention. The clasp is shown in the open position.
  • The figure 2 is a perspective view of the clasp shown in the figure 1 in closed position.
  • The figure 3 is a side view in the closed position of the clasp shown in FIG. figure 2 .
  • The figure 4 is a perspective view of three-quarters straight of the clasp shown to Figures 1 to 3 wherein the wrist length adjuster is shown exploded.
  • The figure 5 is a perspective view of three-quarter left of the clasp shown in figures 1 at 4 wherein the wrist length adjuster is shown exploded.
  • The figure 6 is a partial sectional view according to AA of the figure 3 .
  • The figure 7 is a partial sectional view similar to the figure 6 in which the control member is actuated.

Description des modes de réalisationsDescription of the embodiments

La présente invention concerne un fermoir, en particulier un fermoir pour bracelet. Selon un mode de réalisation préféré, l'invention concerne un fermoir pour bracelet de pièce d'horlogerie. Le bracelet peut être de tout type, comme par exemple en matière plastique souple, en cuir, ou réalisé par un assemblage de maillons métalliques.The present invention relates to a clasp, in particular a clasp for a bracelet. According to a preferred embodiment, the invention relates to a clasp for a timepiece bracelet. The bracelet can be of any type, such as for example flexible plastic material, leather, or made by an assembly of metal links.

De façon générale, le bracelet est constitué de deux portions longitudinales de bracelet, respectivement sous la forme de premier et second brins (non montrés), et chacun des brins est tel que l'une de ses extrémités est reliée au boîtier de la montre tandis que l'autre est destinée à être attachée à un organe de fixation du fermoir. Comme indiqué ci-dessus, dans le cas d'une boucle à ardillon, l'extrémité d'un des deux brins comporte une série de trous, et la longueur est ajustée en choisissant le trou dans lequel l'ardillon est inséré.In general, the bracelet consists of two longitudinal portions of the bracelet, respectively in the form of first and second strands (not shown), and each of the strands is such that one of its ends is connected to the watch case while that the other is intended to be attached to a fastener of the clasp. As indicated above, in the case of a pin buckle, the end of one of the two strands has a series of holes, and the length is adjusted by choosing the hole in which the barb is inserted.

Selon un mode de réalisation, le fermoir de l'invention 1 est un fermoir du type déployant ou à boucle déployante. Ce type de fermoir est connu, par exemple, des documents brevets EP 0913106 , CH700230 , EP2452583 , EP2361523 et CH704335 . Le fermoir comporte au moins deux segments de fermoir longitudinaux. Dans la présente description, ces segments longitudinaux sont également désignés comme "les lames", ou encore les "bras" du fermoir. Généralement, un fermoir comprend deux ou trois segments longitudinaux. Le fermoir selon le mode de réalisation montré aux figures 1 à 7 est un fermoir à deux lames 51, 52. Bien entendu, il serait tout à fait possible de réaliser le fermoir de l'invention avec une boucle déployante à trois lames.According to one embodiment, the clasp of the invention 1 is a clasp of the unfolding type or folding clasp. This type of clasp is known, for example, from patent documents EP 0913106 , CH700230 , EP2452583 , EP2361523 and CH704335 . The clasp has at least two longitudinal clasp segments. In the present description, these longitudinal segments are also referred to as "the blades", or the "arms" of the clasp. Generally, a clasp comprises two or three longitudinal segments. The clasp according to the embodiment shown to Figures 1 to 7 is a clasp with two blades 51, 52. Of course, it would be quite possible to achieve the clasp of the invention with a folding clasp with three blades.

Dans un autre mode de réalisation, le fermoir de l'invention est un fermoir du type boucle à ardillon. En effet, l'homme du métier comprendra que le dispositif de réglage fin de la longueur de bracelet selon l'invention peut être adapté à tout type de fermoir et n'est pas limité à un type de fermoir particulier.In another embodiment, the clasp of the invention is a buckle-type clasp. Indeed, the skilled person will understand that the fine adjustment device of the strap length according to the invention can be adapted to any type of clasp and is not limited to a particular type of clasp.

Le mécanisme à lame déployante est connu et sera rapidement décrit dans la mesure où il ne constitue pas le coeur de l'invention. Dans le mode de réalisation montré, le fermoir comporte des première et seconde lames 51 et 52. Comme on peut bien le voir à la figure3, les lames 51 et 52 sont légèrement incurvées, pour adapter l'ensemble du fermoir au contour du poignet d'un porteur de bracelet-montre.The folding blade mechanism is known and will be described briefly to the extent that it is not the heart of the invention. In the embodiment shown, the clasp has first and second blades 51 and 52. As can be seen in the Figure 3 , the blades 51 and 52 are slightly curved, to adapt the entire clasp to the wrist contour of a wristwatch wearer.

La lame 51 comporte deux demi-lames ou branches parallèles, rendues solidaires l'une de l'autre par le premier support 4 à la première extrémité de la lame 51 et par une entretoise transversale 53. Le premier support 4 porte également le premier organe de fixation 1. Dans le contexte d'un fermoir à boucle déployante, l'ensemble support 4 et lame 51 peut être considéré comme lame 51, le support 4 étant alors un élément de la lame 51. Par exemple, la première extrémité de la lame 51 forme le support 4, le premier organe de fixation 1 étant ainsi connecté à la première extrémité de la lame 51.The blade 51 has two half-blades or parallel branches, made integral with each other by the first support 4 at the first end of the blade 51 and a transverse spacer 53. The first support 4 also carries the first member In the context of a clasp with folding clasp, the support assembly 4 and blade 51 can be considered as blade 51, the support 4 being then an element of the blade 51. For example, the first end of the blade 51 forms the support 4, the first fixing member 1 thus being connected to the first end of the blade 51.

Dans le mode de réalisation montré, le premier organe de fixation 1 comporte deux clous. L'extrémité d'un premier brin de bracelet peut être attachée à ces clous au moyen des trous qui se trouvent souvent vers l'extrémité libre d'un brin de bracelet souple. La distance entre les deux clous 1 peut être standardisée et correspond à l'espacement de deux trous successifs à l'extrémité d'un brin de bracelet. Bien entendu, il serait également possible d'utiliser un mode de fixation alternatif, par exemple une barrette à ressort, pour constituer le premier organe de fixation 1.In the embodiment shown, the first fastener 1 comprises two nails. The end of a first strand of bracelet can be attached to these nails by means of the holes which are often towards the free end of a flexible bracelet strand. The distance between the two nails 1 can be standardized and corresponds to the spacing of two successive holes at the end of a bracelet strand. Of course, it would also be possible to use an alternative method of attachment, for example a spring bar, to constitute the first fixing member 1.

A sa deuxième extrémité, la première lame 51 est articulée à la première extrémité de la seconde lame 52. La seconde lame 52 est reliée, vers sa deuxième extrémité, au second support 54, qui contient le second organe de fixation 2 du fermoir. Comme on peut le voir à la figure 2, le deuxième organe de fixation 2 comporte une barrette à ressort 2, tenue de façon classique entre les deux parois latérales ou entre deux cornes du deuxième support 54.At its second end, the first blade 51 is hinged to the first end of the second blade 52. The second blade 52 is connected, towards its second end, to the second support 54, which contains the second attachment member 2 of the clasp. As can be seen at figure 2 the second fastening member 2 comprises a spring bar 2 held in a conventional manner between the two side walls or between two horns of the second support 54.

Les positions ouvertes et fermées du fermoir 1 sont montrées aux figures 1 et 2 respectivement. Dans les positions ouverte et fermée, les premier et second organes de fixation 1, 2 sont éloignés et rapprochés, respectivement. Dans la position de fermoir fermée, les première et seconde lames 51 et 52 sont verrouillées l'une par rapport à l'autre, et cette position représente également la position de service ou d'utilisation, permettant, par exemple, de porter une montre-bracelet sans qu'elle ne se détache du poignet du porteur. Dans cette position, la seconde lame 52 est placée (et verrouillée) dans l'espace ménagé entre les deux demi-lames 51, comme on peut le voir à la figure 2. La première extrémité de la première lame 51 se trouve alors proche de la deuxième extrémité de la seconde lame 52.The open and closed positions of the clasp 1 are shown at Figures 1 and 2 respectively. In the open and closed positions, the first and second fasteners 1, 2 are remote and close together, respectively. In the closed clasp position, the first and second blades 51 and 52 are locked relative to one another, and this position also represents the position of service or use, allowing, for example, to wear a wristwatch without it being detached from the wrist of the wearer. In this position, the second blade 52 is placed (and locked) in the space between the two half-blades 51, as can be seen in FIG. figure 2 . The first end of the first blade 51 is then close to the second end of the second blade 52.

Il existe un grand nombre de mécanismes de fermeture pour verrouiller le premier et le second organe de fixation 1, 2 en position fermée. La présente invention concerne le réglage de longueur du bracelet et n'est donc aucunement limitée à un mécanisme de fermeture particulier. Dans le mode de réalisation montré, la deuxième lame 52 comporte également deux demi-lames ou branches. Vers la deuxième extrémité, les branches de la seconde lame 52 comportent des surépaisseurs 55 latérales extérieures, destinées à être retenues par les bords de deux évidements 56, aménagés dans les faces intérieures et/ou inférieures des deux branches de la première lame 51.There are a large number of closing mechanisms for locking the first and second fasteners 1, 2 in the closed position. The present invention relates to the length adjustment of the bracelet and is therefore in no way limited to a particular closure mechanism. In the embodiment shown, the second blade 52 also has two half-blades or branches. Towards the second end, the branches of the second blade 52 comprise outer lateral thickenings 55 intended to be retained by the edges of two recesses 56, arranged in the inner and / or lower faces of the two branches of the first blade 51.

Les branches de la deuxième lame 52 peuvent être rapprochées l'une de l'autre en appuyant sur les poussoirs 57, contre la force d'un ressort qui fait partie du mécanisme de fermeture et qui se trouve dans un logement 58 prévu à cet effet. Ce rapprochement entraîne le désengagement des surépaisseurs 55 de leur logement 56 à l'intérieur des deux branches 51 et permet, par conséquent, le déploiement de la seconde lame 52 par rapport à la première lame 51 par pivotement pour passer à la position de fermoir ouvert comme montré à la figure 1.The branches of the second blade 52 can be brought closer to each other by pressing the pushers 57, against the force of a spring which is part of the closing mechanism and which is in a housing 58 provided for this purpose . This approximation causes the disengagement of the excess thicknesses 55 of their housing 56 inside the two branches 51 and allows, therefore, the deployment of the second blade 52 relative to the first blade 51 by pivoting to move to the open clasp position as shown in figure 1 .

Dans le mode de réalisation montré, le mécanisme ou dispositif de réglage 5 de la longueur du bracelet est disposé vers la première extrémité de la première lame 51. En particulier, le dispositif de réglage 5 est associé à et/ou solidaire du premier support 4 portant également le premier organe de fixation 1. Dans ce mode de réalisation, le dispositif de réglage de la longueur 5 et l'organe de commande 57 (les poussoirs 57) permettant d'ouvrir et de fermer le fermoir sont respectivement disposés au niveau des deux organes de fixations, et non pas au niveau du même organe de fixation. Toutefois, La présente invention n'exclut pas la possibilité que le dispositif de réglage de la longueur 5 et l'organe de commande 57 soient associés au même organe de de fixation.In the embodiment shown, the mechanism or device 5 for adjusting the length of the bracelet is disposed towards the first end of the first blade 51. In particular, the adjusting device 5 is associated with and / or secured to the first support 4 also carrying the first fastening member 1. In this embodiment, the length adjusting device 5 and the control member 57 (the pushers 57) for opening and closing the clasp are respectively arranged at the two fasteners, and not at the same fastener. However, the present invention does not exclude the possibility that the length adjusting device 5 and the control member 57 are associated with the same fastening member.

La structure est le fonctionnement du dispositif de réglage de longueur de bracelet est décrit plus en détail avec référence aux figures 4 à 6.The structure is the operation of the wrist length adjustment device is described in more detail with reference to Figures 4 to 6 .

Pour permettre un réglage de la longueur du bracelet, le dispositif de réglage comporte une partie mobile 6, qui comporte ou qui est rendue solidaire du premier organe de fixation 1. La partie mobile 6 est agencée à pouvoir effectuer un déplacement linéaire selon un axe longitudinal du fermoir et/ou du bracelet, ce déplacement produisant ainsi le raccourcissement ou le rallongement de la longueur, selon la direction.To allow adjustment of the length of the bracelet, the adjustment device comprises a movable part 6, which comprises or is secured to the first fastener 1. The movable part 6 is arranged to be able to perform a linear displacement along a longitudinal axis of the clasp and / or the bracelet, this displacement thus producing the shortening or the lengthening of the length, according to the direction.

On entend par axe ou direction longitudinale du bracelet la direction dans laquelle s'étendrait le bracelet de part et d'autre du fermoir s'il était déroulé et mis à plat.By axis or longitudinal direction of the bracelet is meant the direction in which the bracelet would extend on either side of the clasp if it were unrolled and laid flat.

Dans un mode de réalisation, le premier support 4 comporte des structures de guidage latérales 16, 16', permettant la partie mobile d'effectuer un mouvement le long de la direction longitudinale du bracelet. Le premier support 4 comporte en particulier deux parois latérales 18, 18', dont les surfaces intérieures comportent chacune une rainure 16, 16'. Les rainures forment des rails de guidage pour la partie mobile 6. Dans le mode de réalisation montré, la partie mobile 6 est constituée d'une plaquette, dont l'épaisseur est telle qu'elle permet l'insertion dans les rainures 16, 16' comme on le connaît d'un tiroir. En particulier, la plaquette 6 comporte deux bords latéraux 15, 15', dont les hauteurs sont légèrement inférieures aux hauteurs des rainures 16, 16', de façon à retenir la plaquette tout en permettant son déplacement dans l'axe longitudinal. Le guidage de la plaquette 6 est renforcé par le pont ou fond 7, qui relie les deux parois latérales 18, 18' du premier support 4. La plaque 6 peut ainsi glisser sur le fond 7 dans la direction de l'axe longitudinal du bracelet.In one embodiment, the first support 4 includes lateral guide structures 16, 16 ', enabling the moving part to move along the longitudinal direction of the bracelet. The first support 4 comprises in particular two side walls 18, 18 ', whose inner surfaces each comprise a groove 16, 16'. The grooves form guide rails for the movable part 6. In the embodiment shown, the movable part 6 consists of a plate, the thickness of which is such that it allows insertion into the grooves 16, 16 as we know it from a drawer. In particular, the wafer 6 has two lateral edges 15, 15 'whose heights are slightly smaller than the heights of the grooves 16, 16', so as to hold the wafer while allowing it to move in the longitudinal axis. The guide of the wafer 6 is reinforced by the bridge or bottom 7, which connects the two side walls 18, 18 'of the first support 4. The plate 6 can thus slide on the bottom 7 in the direction of the longitudinal axis of the bracelet .

Il convient d'ajouter que le premier support 4 comporte une ou deux butées agencées de façon à empêcher le détachement complet de la partie mobile du support 4. La ou les butées ne sont pas montrées dans les dessins. Dans un mode de réalisation, la face inférieure de la plaquette 6 comporte une rainure ou fente centrale longitudinale. La fente ne traverse pas la plaquette sur l'ensemble de sa longueur, de façon que les extrémités de la fente puissent faire office de butée. Une goupille (non montrée) est logée de manière fixe dans le trou 27 du fond 7 et dépasse de la surface supérieure du fond 7 pour s'étendre dans la fente centrale longitudinale susmentionnée. Lors du déplacement de la partie mobile 6, la fente se déplace le long de la goupille, jusqu'à l'extrémité de la fente. A ce moment, la goupille arrête le déplacement de la partie mobile dans la même direction. Le même principe s'applique pour le déplacement de la partie mobile dans l'autre direction.It should be added that the first support 4 comprises one or two stops arranged so as to prevent the complete detachment of the mobile part of the support 4. The stop or stops are not shown in the drawings. In one embodiment, the lower face of the wafer 6 has a groove or central longitudinal slot. The slot does not cross the wafer over its entire length, so that the ends of the slot can act as a stop. A pin (not shown) is fixedly housed in the hole 27 of the bottom 7 and protrudes from the upper surface of the bottom 7 to extend into the aforementioned longitudinal central slot. When moving the movable portion 6, the slot moves along the pin, to the end of the slot. At this time, the pin stops moving the moving part in the same direction. The same principle applies for moving the moving part in the other direction.

Afin d'empêcher un ajustement involontaire de la longueur de bracelet, le dispositif de réglage de longueur comporte un dispositif d'arrêt. Le dispositif d'arrêt coopère avec la partie mobile 6 en bloquant le déplacement de cette dernière dans au moins une direction longitudinale du bracelet. En particulier, le dispositif d'arrêt empêche le rallongement involontaire de la longueur.In order to prevent an involuntary adjustment of the bracelet length, the length adjustment device comprises a stop device. The stop device cooperates with the mobile part 6 by blocking the displacement of the latter in at least one longitudinal direction of the bracelet. In particular, the stop device prevents the involuntary lengthening of the length.

Le dispositif d'arrêt comporte le levier 8, monté pivotant sur le premier support 4. Comme on peut le voir à la figure 4, la paroi latérale 18 du support 4 comprend un renflement latéral extérieur 21, dans lequel est travaillé un logement 17 pour le dispositif d'arrêt. Vers le bas, le renflement 21 forme un fond et vers le haut un plafond dudit logement 17. Entre le fond et le plafond, un arbre de pivotement 19 est agencé, définissant l'axe de pivotement 13. Dans le mode de réalisation montré, l'axe de pivotement 13 du levier 8 est normal par rapport au plan général du bracelet.The stop device comprises the lever 8 pivotally mounted on the first support 4. As can be seen in FIG. figure 4 , the side wall 18 of the support 4 comprises an outer lateral bulge 21, in which is worked a housing 17 for the stop device. Downward, the bulge 21 forms a bottom and upwardly a ceiling of said housing 17. Between the bottom and the ceiling, a pivot shaft 19 is arranged, defining the pivot axis 13. In the embodiment shown, the pivot axis 13 of the lever 8 is normal with respect to the general plane of the bracelet.

L'arbre 19 est emmanché sur le manchon et/ou la douille 20. Le levier 18 comporte un trou cylindrique 22, dans lequel l'arbre 19 est emmanché. Alors que l'arbre 19 est monté fixe entre le fond et le plafond du logement 17, le levier peut pivoter autour l'axe 13 défini par l'arbre 19. L'arbre 19 peut, par exemple, être réalisé sous forme d'une vis comportant un filetage extérieur, passant à travers le trou 24 dans le fond du logement 17, traversant le logement est étant vissé dans un filetage intérieur (non montré) taraudé dans le plafond du logement 17.The shaft 19 is fitted on the sleeve and / or the sleeve 20. The lever 18 comprises a cylindrical hole 22, in which the shaft 19 is fitted. While the shaft 19 is fixedly mounted between the bottom and the ceiling of the housing 17, the lever can pivot about the axis 13 defined by the shaft 19. The shaft 19 can, for example, be made in the form of a screw having an external thread, passing through the hole 24 in the bottom of the housing 17, passing through the housing is being screwed into an internal thread (not shown) tapped in the ceiling of the housing 17.

Il convient de noter que la douille 20 peut rendre plus fluide ou plus précis le mouvement de pivotement du levier 8, mais elle peut très bien être omise. Il suffit alors de choisir les dimensions du ressort 14 et de l'arbre 19 de façon que le diamètre intérieur des spires du ressort de torsion laisse un petit jeu par rapport au diamètre extérieur de l'arbre 19, pour que ce dernier puisse être emmanché directement dans les spires du ressort.It should be noted that the bushing 20 may make the pivoting movement of the lever 8 more fluid or more precise, but it may very well be omitted. It is then sufficient to choose the dimensions of the spring 14 and the shaft 19 so that the inner diameter of the turns of the torsion spring leaves a small clearance with respect to the outer diameter of the shaft 19, so that the latter can be fitted directly in the turns of the spring.

Le levier 8 comporte une structure d'arrêt ou un verrou 11. De préférence, le levier 8 comporte également un organe de commande ou d'actionnement 9. En considération de la forme allongée du levier 8, on constatera que la structure d'arrêt 11 et l'organe d'actionnement se trouvent respectivement vers les extrémités opposées du levier 8. Dans un mode de réalisation, le levier 8 comporte des première et seconde extrémités, l'organe d'actionnement 9 et la structure d'arrêt 11 étant situées, respectivement, vers lesdites première et second extrémités. Dans un mode de réalisation, l'organe d'actionnement 9 et la structure d'arrêt 11 sont situés de part et d'autre de l'axe de pivotement 13 du levier 8.The lever 8 comprises a stop structure or a latch 11. Preferably, the lever 8 also comprises a control or actuating member 9. In consideration of the elongated shape of the lever 8, it will be seen that the stop structure 11 and the actuating member are respectively towards the opposite ends of the lever 8. In one embodiment, the lever 8 has first and second ends, the actuating member 9 and the stop structure 11 being located respectively to said first and second ends. In one embodiment, the actuating member 9 and the stop structure 11 are located on either side of the pivot axis 13 of the lever 8.

Dans le mode de réalisation montré, l'organe d'actionnement 9 et la structure d'arrêt 11 sont solidaires l'un de l'autre. En particulier, la structure d'arrêt 11 et l'organe d'actionnement 9 sont formés en une seule pièce, d'un seul matériau continu. Le verrou 11 comporte une convexité sous la forme d'une demi-sphère. En revanche, l'organe d'actionnement 9 comporte une surface d'appui 25, qui peut comporter des rugosités et/ou des rainures parallèles, qui ont comme but d'augmenter la friction entre le doigt de l'utilisateur et la surface 25 de l'organe d'actionnement.In the embodiment shown, the actuating member 9 and the stop structure 11 are integral with each other. In particular, the stop structure 11 and the actuating member 9 are formed in one piece, of a single continuous material. The latch 11 has a convexity in the form of a half-sphere. On the other hand, the actuating member 9 comprises a bearing surface 25, which may comprise roughnesses and / or parallel grooves, which are intended to increase the friction between the user's finger and the surface 25. of the actuating member.

Il convient encore de mentionner que le levier 8 comporte également un logement 26 pour la douille 20 et pour les spires ou le corps du ressort de torsion 14.It should also be mentioned that the lever 8 also comprises a housing 26 for the bushing 20 and for the turns or the body of the torsion spring 14.

Le levier 8 est ainsi monté pivotant dans le logement 17 à l'aide de l'arbre 19 passant par le trou 22 du levier. L'arbre passe ensuite à travers la douille 20, avant de s'ancrer dans le plafond du logement 17. La douille 20 elle, est guidée à travers les spires et/ou le corps du ressort de torsion 14. Dans le mode de réalisation montré, le ressort de torsion 14 comporte des spires et/ou un corps, qui est coaxial par rapport à l'axe de pivotement du levier 9. On notera qu'une des branches du ressort de torsion 14 s'appuie contre une face intérieure du levier 8, alors que l'autre branche s'appuie contre une face intérieure du logement 17. Le ressort de torsion 14 est ainsi logé de façon à rappeler le levier 8 en position de verrouillage et ou de blocage. Il est aussi possible de prévoir des trous et/ou des évidements dans le levier et/ou dans le support 4 pour accueillir les branches libres du ressort de torsion (non montré).The lever 8 is thus pivotally mounted in the housing 17 by means of the shaft 19 passing through the hole 22 of the lever. The shaft then passes through the bushing 20, before being anchored in the ceiling of the housing 17. The bushing 20 is guided through the turns and / or the body of the torsion spring 14. In the embodiment shown, the torsion spring 14 comprises turns and / or a body, which is coaxial with the pivot axis of the lever 9. Note that one of the branches of the torsion spring 14 rests against an inner face of the lever 8, while the other arm bears against an inner face of the housing 17. The torsion spring 14 is thus housed so as to return the lever 8 in the locking and / or locking position. It is also possible to provide holes and / or recesses in the lever and / or in the support 4 to accommodate the free branches of the torsion spring (not shown).

Comme on peut le voir à la figure 5, le premier support 4 comporte un trou 23. Ce trou permet au levier 8 de coopérer avec la partie mobile 6. Plus précisément, le trou 23 est aménagé dans la paroi latérale 18 du premier support 4, exactement au niveau de la rainure 16 dans laquelle est guidée la partie mobile 6. L'orientation et/ou l'extension du trou est perpendiculaire à la direction longitudinale du bracelet et dans le plan général du fermoir.As can be seen at figure 5 , the first support 4 comprises a hole 23. This hole allows the lever 8 to cooperate with the mobile part 6. More precisely, the hole 23 is arranged in the side wall 18 of the first support 4, exactly at the groove 16 in the which is guided the movable portion 6. The orientation and / or the extension of the hole is perpendicular to the longitudinal direction of the bracelet and in the general plane of the clasp.

Dans un mode de réalisation alternatif, le trou 23 peut être remplacé par une échancrure ou par tout autre type d'accès à la partie mobile 6 et en particulier à la denture de cette dernière. Ceci dépend de la réalisation concrète du fermoir de l'invention. L'invention envisage également d'agencer le levier 8 et la partie mobile 6 sur le support 4 de façon qu'aucune échancrure ou aucun trou n'est nécessaire pour permettre la coopération du levier pivotant avec la partie mobile.In an alternative embodiment, the hole 23 may be replaced by a notch or by any other type of access to the movable part 6 and in particular to the toothing of the latter. This depends on the concrete embodiment of the clasp of the invention. The invention contemplates also to arrange the lever 8 and the movable part 6 on the support 4 so that no indentation or no hole is necessary to allow the cooperation of the pivoting lever with the movable part.

Dans un mode de réalisation, la partie mobile 6 comporte deux bords et/ou faces latéraux 15. Une suite de crans 12 et/ou une denture est aménagée dans au moins un desdits bords et/ou faces latéraux. Dans un mode de réalisation, la structure d'arrêt 11 interagit directement avec un cran 12a d'une suite de crans 12 agencée dans ladite partie mobile 6. Plus particulièrement, le levier 8 est agencé de façon que ladite structure d'arrêt 11 du levier 8 passe par ledit trou 15 pour coopérer avec un cran 12a de ladite partie mobile 6.In one embodiment, the movable portion 6 has two edges and / or side faces 15. A series of notches 12 and / or a toothing is arranged in at least one of said edges and / or side faces. In one embodiment, the stop structure 11 interacts directly with a notch 12a of a series of notches 12 arranged in said moving part 6. More particularly, the lever 8 is arranged such that said stop structure 11 of the lever 8 passes through said hole 15 to cooperate with a notch 12a of said movable part 6.

Dans le mode de réalisation montré aux figures, chacun des crans 12 est réalisé sous la forme d'une cavité en forme de demi-sphère. La forme concave des crans 12 est complémentaire de la forme convexe de la structure d'arrêt 11, afin de réaliser une coopération qui permet de bloquer la pièce mobile 6 en position de blocage et/ou position de service. Bien entendu, les crans 12 et la structure d'arrêt 11 peuvent avoir d'autres formes complémentaires, pour autant qu'ils permettent la fonctionnalité de blocage souhaitée lors de l'engagement de la structure d'arrêt 11.In the embodiment shown in the figures, each of the notches 12 is in the form of a cavity in the shape of a half-sphere. The concave shape of the notches 12 is complementary to the convex shape of the stop structure 11, in order to achieve a cooperation which makes it possible to block the moving part 6 in the locked position and / or the service position. Of course, the notches 12 and the stop structure 11 may have other complementary shapes, provided that they allow the desired locking function when the stop structure 11 is engaged.

Le fonctionnement du dispositif d'arrêt 7 peut être compris avec référence aux figures 6 et 7. Ces figures montrent une coupe selon la ligne A-A de la figure 3. La coupe s'étend dans un plan qui est parallèle ou qui correspond au plan général du fermoir. Le support 4, la plaquette 6, le levier 8 et l'arbre 19 sont tous coupés dans la vue de la figure 6. Le ressort 14 n'est pas visible dans les figures 6 et 7, car la coupe passe au-dessous du logement 23 du ressort 14 (fig. 5).The operation of the stop device 7 can be understood with reference to the Figures 6 and 7 . These figures show a section along line AA of the figure 3 . The section extends in a plane that is parallel or that corresponds to the general plane of the clasp. The support 4, the plate 6, the lever 8 and the shaft 19 are all cut in the view of the figure 6 . The spring 14 is not visible in the Figures 6 and 7 because the cut passes beneath the housing 23 of the spring 14 ( Fig. 5 ).

Les figures 6 et 7 montrent en particulier la coopération et/ou l'interaction entre le levier 8 et la partie mobile 6. Dans la figure 6, le dispositif d'arrêt se trouve en position d'arrêt et/ou de verrouillage, dans laquelle un rallongement du bracelet n'est pas possible. Dans cette position, la structure d'arrêt 11 est placée dans un des crans de la série de crans 12 de la partie mobile 6. Comme indiqué ci-dessous, le verrou 11 passe par le trou 23 dans la paroi latérale 18 du support 4 pour aboutir dans un cran de la série de crans 12.The Figures 6 and 7 show in particular the cooperation and / or the interaction between the lever 8 and the moving part 6. In the figure 6 , the stop device is in the stop and / or lock position, in which an extension of the bracelet is not possible. In this position, the stop structure 11 is placed in one of the notches of the series of notches 12 of the movable part 6. As indicated below, the lock 11 passes through the hole 23 in the side wall 18 of the support 4 to end in a notch of the series of notches 12.

La position de repos du dispositif de réglage de longueur et caractérisé par l'absence de toute action et de tout actionnement de la part d'un porteur. Dans ce cas, le levier 8 est tenu dans une position de blocage. De préférence, le levier 8 est tenu dans cette position par la force d'un ressort de torsion 14.The rest position of the length adjustment device and characterized by the absence of any action and any action on the part of a carrier. In this case, the lever 8 is held in a locking position. Preferably, the lever 8 is held in this position by the force of a torsion spring 14.

Comme on peut le constater, il n'est pas possible de rallonger le bracelet en tirant la partie mobile 6 en direction de la flèche 31, car le levier 8, et en particulier la structure d'arrêt 11, empêche totalement un tel déplacement.As can be seen, it is not possible to extend the bracelet by pulling the movable part 6 in the direction of the arrow 31, because the lever 8, and in particular the stop structure 11, completely prevents such movement.

En effet, si un utilisateur devait tirer sur un brin de bracelet attaché au premier organe de fixation 1 dans la direction 31, aucun déplacement de la partie mobile 6 n'aurait lieu et la longueur du bracelet resterait complètement inchangée. On notera en effet que, dans la figure 6, le levier 8 se trouve en position de repos dans laquelle il est tenu par la force du ressort 14. A partir de cette position de repos, le levier 8 ne peut pas pivoter dans le sens antihoraire, raison pour laquelle il bloque tout déplacement de la partie mobile en direction de la flèche 31.Indeed, if a user had to pull on a strap strand attached to the first fastener 1 in the direction 31, no movement of the moving part 6 would take place and the length of the bracelet would remain completely unchanged. It should be noted that in the figure 6 , the lever 8 is in the rest position in which it is held by the force of the spring 14. From this rest position, the lever 8 can not rotate counterclockwise, which is why it blocks any movement of the moving part in the direction of the arrow 31.

En revanche, si l'utilisateur devait pousser sur ce même brin de bracelet en exerçant ainsi une force sur la partie mobile 6 en direction opposée, illustrée par la flèche 32, l'utilisateur pourrait surmonter la force du ressort 14 et par conséquent désengager le verrou 11 du cran dans lequel il est placé en faisant pivoter le levier 8 dans le sens horaire. Dans ce cas, la partie mobile 6 se déplace en direction 32 relatif au support 4, ce qui équivaut à un raccourcissement du bracelet.On the other hand, if the user were to push on the same strand of bracelet thus exerting a force on the movable part 6 in the opposite direction, illustrated by the arrow 32, the user could overcome the force of the spring 14 and consequently disengage the 11 lock of the notch in which it is placed by rotating the lever 8 in the clockwise direction. In this case, the moving part 6 moves in the direction 32 relative to the support 4, which is equivalent to a shortening of the bracelet.

Une caractéristique du mode de réalisation illustré est notamment, qu'en position de repos (en l'absence d'un actionnement de l'organe d'actionnement 9), le levier 8 est libre de pivoter dans un sens seulement, ici dans le sens horaire, mais non pas dans le sens inverse.A characteristic of the illustrated embodiment is that, in the rest position (in the absence of actuation of the actuating member 9), the lever 8 is free to pivot in one direction only, here in the clockwise, but not in the opposite direction.

Dans le mode de réalisation illustré, le levier 8, et en particulier une extrémité du levier comportant l'organe d'actionnement 9, est directement accessible par un utilisateur, de préférence depuis l'extérieur du fermoir.In the illustrated embodiment, the lever 8, and in particular one end of the lever comprising the actuating member 9, is directly accessible by a user, preferably from outside the clasp.

Dans un mode de réalisation préféré, le levier 8 est agencé pivotant sur ledit premier support 4 de façon que l'organe d'actionnement 9 du levier 8 se trouve accessible de l'extérieur quand le fermoir est fermé. De préférence, ce mode de réalisation permet un actionnement de l'organe d'actionnement 9 depuis l'extérieur que le fermoir soit fermé ou ouvert. Selon un mode de réalisation, le levier 8 est agencé pivotant sur ledit premier support 4 de façon qu'au moins une partie du levier 8 soit à fleur d'une partie au moins de la surface extérieure du support 4 portant le dispositif d'arrêt.In a preferred embodiment, the lever 8 is pivotally mounted on said first support 4 so that the actuating member 9 of the lever 8 is accessible from the outside when the clasp is closed. Preferably, this embodiment allows an actuation of the organ 9 from the outside whether the clasp is closed or open. According to one embodiment, the lever 8 is arranged to pivot on said first support 4 so that at least a portion of the lever 8 is flush with at least a portion of the outer surface of the support 4 carrying the stop device .

Par exemple, la surface extérieure 25 d'au moins une partie du levier 8 et/ou de l'organe d'actionnement peut être alignée dans le prolongement de la paroi latérale extérieure 18 du support 4. Quand le support 4 comporte un renflement 21 pour loger le levier et/ou dispositif d'arrêt, au moins une partie d'une surface extérieure du levier 8 et/ou de son organe d'actionnement 9 peut être à fleur de la surface extérieure formée par le renflement 21.For example, the outer surface 25 of at least a portion of the lever 8 and / or the actuating member may be aligned in the extension of the outer sidewall 18 of the support 4. When the support 4 has a bulge 21 to accommodate the lever and / or stop device, at least a portion of an outer surface of the lever 8 and / or its actuator 9 may be flush with the outer surface formed by the bulge 21.

En d'autres termes, selon ce mode de réalisation, la surface extérieure 25 du levier 8 et/ou de son organe d'actionnement 9 forme une surface commune et/ou continue avec la surface extérieure du support 4 à l'endroit où le levier 8 est logé dans le support 4. L'ensemble du dispositif de réglage de longueur peut ainsi s'intégrer de manière harmonieuse dans le contour général du fermoir, et l'organe d'actionnement 9 peut être actionné de l'extérieur par un utilisateur et/ou porteur, sans ouverture du fermoir.In other words, according to this embodiment, the outer surface 25 of the lever 8 and / or its actuating member 9 forms a common and / or continuous surface with the outer surface of the support 4 at the place where the lever 8 is housed in the support 4. The entire length adjustment device can thus integrate harmoniously into the general contour of the clasp, and the actuating member 9 can be actuated from the outside by a user and / or carrier, without opening the clasp.

Selon un mode de réalisation préféré, une partie au moins (par exemple une autre partie) du levier 8 et/ou de son organe d'actionnement 9 s'élève par rapport à la surface extérieure du support 4 et/ou dépasse les contours ou dimensions extérieurs du support 4. C'est de préférence à cet endroit-là où l'organe d'actionnement 9 est facilement accessible, car le support 4 et/ou sa surface extérieure ne gêne pas l'accès du doigt de l'utilisateur à l'organe d'actionnement 9 et/ou l'enfoncement de cet organe par le doigt. Comme on peut le voir à la Figure 6, l'organe d'actionnement 9 s'étend au-delà de l'extrémité de la lame 51 servant de support 4, dans le sens longitudinal du fermoir, créant un surplomb ou un encorbellement. C'est précisément au niveau du surplomb que l'organe d'actionnement 9 peut être aisément enfoncé par un utilisateur, entraînant le pivotement du levier 9.According to a preferred embodiment, at least one part (for example another part) of the lever 8 and / or its actuating member 9 rises relative to the outer surface of the support 4 and / or exceeds the contours or external dimensions of the support 4. It is preferably at this point where the actuating member 9 is easily accessible, because the support 4 and / or its outer surface does not interfere with the access of the user's finger to the actuating member 9 and / or the depression of this member by the finger. As can be seen at Figure 6 , the actuating member 9 extends beyond the end of the blade 51 serving as support 4, in the longitudinal direction of the clasp, creating an overhang or a cantilever. It is precisely at the level of the overhang that the actuating member 9 can be easily depressed by a user, causing the lever 9 to pivot.

Pour rallonger le bracelet, il est en effet nécessaire que l'utilisateur actionne activement le dispositif d'arrêt, en appuyant sur l'organe d'actionnement 9, pour faire pivoter le levier 8 et désengager le verrou 11 du cran de la partie mobile 6 dans lequel il est placé (figure 7). Quand l'organe d'actionnement est enfoncé par l'utilisateur, la partie mobile 6 peut être déplacée dans les deux directions 31 et 32, pour effectuer un raccourcissement ou un rallongement du bracelet, respectivement.To lengthen the bracelet, it is indeed necessary that the user actively activates the stop device, by pressing the actuating member 9, to rotate the lever 8 and disengage the latch 11 of the notch of the moving part 6 in which he is placed ( figure 7 ). When the actuating member is depressed by the user, the movable portion 6 can be moved in both directions 31 and 32, to shorten or lengthen the bracelet, respectively.

Pendant l'opération d'ajustement de longueur en direction de la flèche 31 (rallongement), il est nécessaire de tenir le levier 8 en position déverrouillée, c'est-à-dire de tenir l'organe d'actionnement 9 enfoncé, car autrement le levier retourne dans la position de blocage comme montré à la figure 6, dans laquelle un rallongement de la longueur du bracelet n'est plus possible.During the length adjustment operation in the direction of the arrow 31 (extension), it is necessary to hold the lever 8 in the unlocked position, that is to say to hold the actuating member 9 depressed, because otherwise the lever returns to the lock position as shown in the figure 6 , in which an extension of the length of the bracelet is no longer possible.

Dans un mode de réalisation, le dispositif d'arrêt comporte le levier 8, en particulier sa structure d'arrêt 11, l'arbre de pivotement 19 et le ressort 14. La suite de crans 12 disposée dans la partie mobile 6 fait également partie du dispositif d'arrêt. L'ensemble du dispositif d'arrêt est associé et/ou attaché au premier support 4. En ce qui concerne le dispositif de réglage de longueur 5, ce dernier comporte, selon un mode de réalisation préféré, en plus du dispositif d'arrêt, l'ensemble de la partie mobile 6, ainsi que les moyens de guidage pour cette dernière, tels que les rainures 16, 16', disposés dans le support 4.In one embodiment, the stop device comprises the lever 8, in particular its stop structure 11, the pivot shaft 19 and the spring 14. The series of notches 12 disposed in the movable part 6 is also part of stop device. The entire stop device is associated with and / or attached to the first support 4. With regard to the length adjustment device 5, the latter comprises, according to a preferred embodiment, in addition to the stop device, the entire movable part 6, and the guide means for the latter, such as grooves 16, 16 ', arranged in the support 4.

De ce qui précède, on comprendra que le dispositif de réglage de longueur de bracelet de l'invention présente plusieurs avantages. Par exemple, le dispositif comporte très peu de pièces séparées. Dans sa forme la plus simple, le dispositif de réglage comporte le levier 8, l'arbre 19 et le ressort 14. Le levier 8 fonctionne à la foi comme organe d'actionnement et comme verrou. La denture 12 peut être convenablement intégrée et/ou attachée dans une face latérale de la partie mobile, sans qu'une pièce séparée portant la denture soit nécessaire.From the foregoing, it will be appreciated that the wrist length adjuster of the invention has several advantages. For example, the device has very few separate parts. In its simplest form, the adjusting device comprises the lever 8, the shaft 19 and the spring 14. The lever 8 operates in the faith as an actuating member and as a lock. The toothing 12 may be suitably integrated and / or attached in a side face of the movable part, without a separate piece bearing the toothing is necessary.

Le logement 17 du dispositif de réglage peut être disposé dans une paroi latérale 18 du support 4, sans augmenter la largeur du fermoir, c'est-à-dire l'extension du fermoir dans une direction perpendiculaire à la direction longitudinale du bracelet, dans le plan général du fermoir. La largeur du fermoir est définie essentiellement par la largeur du fermoir lui-même, par exemple par le mécanisme de fermeture et/ou par les poussoirs 57 de ce dernier.The housing 17 of the adjusting device can be arranged in a side wall 18 of the support 4, without increasing the width of the clasp, that is to say the extension of the clasp in a direction perpendicular to the longitudinal direction of the bracelet, in the general plan of the clasp. The width of the clasp is essentially defined by the width of the clasp itself, for example by the closing mechanism and / or by the pushers 57 of the latter.

On notera également, de manière totalement surprenante, que le dispositif de réglage de longueur n'augmente nullement l'épaisseur du fermoir, c'est-à-dire la dimension du fermoir le long d'un axe qui est normal au plan général du fermoir. En effet, le dispositif de réglage de longueur est disposé latéralement par rapport au fermoir, et peut être réalisé sans empilement de pièces le long de la direction normale par rapport au plan général du fermoir.It will also be noted, in a completely surprising manner, that the length adjustment device does not increase the thickness of the clasp, that is to say the size of the clasp along an axis which is normal to the general plane of the clasp. clasp. Indeed, the length adjustment device is disposed laterally relative to the clasp, and can be achieved without stacking parts along the normal direction relative to the general plane of the clasp.

Selon le mode de réalisation montré aux figures, le dispositif d'arrêt est asymétrique et/ou disposé latéralement sur un côté seulement selon la direction longitudinale du bracelet, ce qui constitue un autre avantage du fermoir de l'invention. Par exemple, il n'est pas nécessaire d'enfoncer deux poussoirs simultanément pour ajuster la longueur, et le nombre de pièces peut être réduit davantage de cette façon.According to the embodiment shown in the figures, the stop device is asymmetrical and / or arranged laterally on one side only in the longitudinal direction of the bracelet, which constitutes another advantage of the clasp of the invention. For example, it is not necessary to push two pushers simultaneously to adjust the length, and the number of pieces can be further reduced in this way.

Enfin, le réglage de la longueur de bracelet est indépendant du mécanisme de fermeture du bracelet. Il est ainsi possible de régler la longueur sans devoir ouvrir le fermoir. En outre, comme décrit ci-dessous, un raccourcissement peut être effectué sans même actionner l'organe d'actionnement du dispositif de réglage de longueur. Il suffit de pousser le brin de bracelet connecté au premier organe de fixation 1 dans la direction correspondante (flèche 32) pour raccourcir le bracelet. Cette fonction peut être souhaitable, dans la mesure où elle peut être effectuée très rapidement et permet de retrouver une longueur qui soit agréable pour le porteur au cas où la montre glisse le long du poignet parce que le bracelet est trop long.Finally, the adjustment of the bracelet length is independent of the closure mechanism of the bracelet. It is thus possible to adjust the length without having to open the clasp. In addition, as described below, a shortening can be performed without even actuating the actuating member of the length adjustment device. Just push the bracelet strand connected to the first fastener 1 in the corresponding direction (arrow 32) to shorten the bracelet. This function may be desirable, since it can be performed very quickly and can find a length that is pleasant for the wearer in case the watch slides along the wrist because the bracelet is too long.

L'homme du métier ne rencontrera pas de difficulté particulière pour adapter le contenu de la présente divulgation à ses propres besoins et mettre en oeuvre un fermoir, notamment pour pièce d'horlogerie, sans sortir du cadre de la présente invention.The skilled person will not encounter any particular difficulty to adapt the content of the present disclosure to his own needs and implement a clasp, especially for a timepiece, without departing from the scope of the present invention.

Par exemple, dans un mode de réalisation alternatif (non montré), l'organe de commande ou d'actionnement 9 est une pièce séparée du levier 8. Dans ce cas, l'organe de commande pourrait être réalisé sous forme d'un poussoir ou d'un coulisseau, agencé de façon à pouvoir agir sur le levier 8. Selon ce mode de réalisation, le levier 8 peut toujours comporter le verrou 11 et fonctionnerait de manière analogue au mode de réalisation montré dans les figures.For example, in an alternative embodiment (not shown), the control or actuating member 9 is a separate part of the lever 8. In this case, the control member could be in the form of a pusher or a slider, arranged so as to act on the lever 8. According to this embodiment, the lever 8 may still include the latch 11 and operate similarly to the embodiment shown in the figures.

Comme mentionné ci-dessous, l'adaptation du présent enseignement à la construction d'un autre type de fermoir pour montre ne posera pas de difficulté particulière à l'homme du métier.As mentioned below, the adaptation of this teaching to the construction of another type of watch clasp will not pose any particular difficulty to the skilled person.

Claims (15)

Fermoir (10) pour bracelets du type comprenant des première et seconde extrémités libres, le fermoir comportant des premier et second organes de fixation (1, 2) du bracelet destinés à être rendus respectivement solidaires desdites première et seconde extrémités libres du bracelet, lesdits organes de fixation (1, 2) étant mobiles l'un par rapport à l'autre entre au moins une position ouverte et une position fermée, de service, dans laquelle ils sont plus proches l'un de l'autre que dans la position ouverte; le fermoir comportant: - un mécanisme de fermeture (3) permettant d'ouvrir et de fermer le fermoir; - un premier support (4) portant un dispositif de réglage de la longueur (5) du bracelet, le premier support (4) logeant une partie mobile (6) connectée à un des deux organes de fixation, le premier support (4) portant un dispositif d'arrêt agencé pour bloquer le déplacement de la partie mobile (6) dans au moins un sens en direction longitudinale du bracelet, caractérisé en ce que le dispositif d'arrêt comporte au moins un levier (8) monté pivotant sur ledit premier support (4), le levier comportant un organe d'actionnement (9) destiné à être enfoncé pour faire pivoter le levier (8) et ainsi débloquer la partie mobile (6) et permettre son déplacement pour le réglage de la longueur du bracelet. Clasp (10) for bracelets of the type comprising first and second free ends, the clasp comprising first and second fastening members (1, 2) of the bracelet intended to be secured respectively to said first and second free ends of the bracelet, said bodies for fixing (1, 2) being movable relative to each other between at least one open position and a closed position, in service, in which they are closer to each other than in the open position ; the clasp comprising: - a closing mechanism (3) for opening and closing the clasp; - a first support (4) carrying a device for adjusting the length (5) of the bracelet, the first support (4) housing a movable part (6) connected to one of the two fasteners, the first support (4) bearing a stop device arranged to block the displacement of the movable part (6) in at least one direction in the longitudinal direction of the bracelet, characterized in that the stop device comprises at least one lever (8) pivotally mounted on said first support (4), the lever comprising an actuating member (9) to be depressed to pivot the lever (8) and thus unlock the movable portion (6) and allow its movement for adjusting the length of the bracelet. Fermoir selon la revendication 1, caractérisé en ce que ledit levier (8) comporte une structure d'arrêt (11) agencée de manière à pouvoir interagir directement avec un cran (12a) d'une suite de crans (12) agencée dans ladite partie mobile (6).Clasp according to claim 1, characterized in that said lever (8) comprises a stop structure (11) arranged so as to interact directly with a notch (12a) of a succession of notches (12) arranged in said portion mobile (6). Fermoir selon l'une quelconque des revendications 1-2, caractérisé en ce que l'organe d'actionnement (9) et la structure d'arrêt (11) sont situés de part et d'autre de l'axe de pivotement (13) du levier (8).Clasp according to any one of claims 1-2, characterized in that the actuating member (9) and the stop structure (11) are located on either side of the pivot axis (13). ) of the lever (8). Fermoir selon l'une quelconque des revendications 1-3, caractérisé en ce que le levier (8) comporte des première et seconde extrémités, et en ce que l'organe d'actionnement (9) et la structure d'arrêt (11) sont situés, respectivement, vers lesdites première et seconde extrémités.Clasp according to any one of claims 1-3, characterized in that the lever (8) has first and second ends, and that the actuating member (9) and the stop structure (11) are respectively located towards said first and second ends. Fermoir selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier (8) est agencé pivotant sur ledit premier support (4) de façon que l'organe d'actionnement (9) du levier (8) se trouve accessible de l'extérieur quand le fermoir est fermé, permettant un actionnement de l'organe d'actionnement (9) depuis l'extérieur lorsque le fermoir est fermé.Clasp according to any one of the preceding claims, characterized in that the lever (8) is arranged to pivot on said first support (4) so that the actuating member (9) of the lever (8) is accessible from outside when the clasp is closed, allowing actuation of the actuating member (9) from the outside when the clasp is closed. Fermoir selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier (8) est agencé pivotant sur ledit premier support (4) de façon qu'une partie au moins de l'organe d'actionnement (9) du levier (8) dépasse des contours ou dimensions extérieurs du support (4).Clasp according to any one of the preceding claims, characterized in that the lever (8) is arranged to pivot on said first support (4) so that at least part of the lever actuating member (9) ( 8) protrudes outside contours or dimensions of the support (4). Fermoir selon l'une quelconque des revendications précédentes, caractérisée en ce que le levier (8) est agencé pivotant sur ledit premier support (4) de façon qu'au moins une partie du levier (8) et/ou de son organe d'actionnement (9) est à fleur d'une partie au moins de la surface extérieure du support (4) portant le dispositif d'arrêt.Clasp according to any one of the preceding claims, characterized in that the lever (8) is arranged to pivot on said first support (4) so that at least a portion of the lever (8) and / or its member actuation (9) is flush with at least a portion of the outer surface of the support (4) carrying the stop device. Fermoir selon l'une quelconque des revendications précédentes, caractérisé en ce que l'axe de pivotement (13) du levier (8) est normal par rapport au plan général du bracelet.Clasp according to any one of the preceding claims, characterized in that the pivot axis (13) of the lever (8) is normal to the general plane of the bracelet. Fermoir selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier (8) est tenu dans une position de blocage par la force d'un ressort de torsion (14).Clasp according to any one of the preceding claims, characterized in that the lever (8) is held in a locking position by the force of a torsion spring (14). Fermoir selon la revendication 8, caractérisé en ce que ledit ressort de torsion (14) comporte un corps ou enroulement, qui est coaxial par rapport à l'axe de pivotement du levier (8).Clasp according to claim 8, characterized in that said torsion spring (14) comprises a body or winding, which is coaxial with the pivot axis of the lever (8). Fermoir selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit dispositif d'arrêt est asymétrique et/ou disposé latéralement sur un côté seulement selon la direction longitudinale du bracelet.Clasp according to any one of the preceding claims, characterized in that said stop device is asymmetrical and / or arranged laterally on one side only in the longitudinal direction of the bracelet. Fermoir selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit premier support (4) comporte un trou ou une échancrure (23) permettant au levier (8) de coopérer avec la partie mobile (6).Clasp according to any one of the preceding claims, characterized in that said first support (4) comprises a hole or notch (23) allowing the lever (8) to cooperate with the movable part (6). Fermoir selon la revendication 12, caractérisé en ce que ledit levier (8) est agencé de façon que ladite structure d'arrêt (11) du levier (8) passe par ledit trou ou ladite échancrure (23) pour coopérer avec un cran (12a) de ladite partie mobile (6).Clasp according to claim 12, characterized in that said lever (8) is arranged so that said stop structure (11) of the lever (8) passes through said hole or said notch (23) to cooperate with a notch (12a ) of said movable portion (6). Fermoir selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit premier support (4) comprend un renflement latéral extérieur (21), dans lequel est aménagé un logement (17) pour ledit dispositif d'arrêt.Clasp according to any one of the preceding claims, characterized in that said first support (4) comprises an outer lateral bulge (21), in which is arranged a housing (17) for said stop device. Montre-bracelet munie d'un fermoir selon l'une quelconque des revendications 1 à 14.Wristwatch with a clasp according to one of Claims 1 to 14.
EP15195690.1A 2015-11-20 2015-11-20 Bracelet clasp comprising a device for adjusting the length of the bracelet Active EP3170420B1 (en)

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EP4059374B1 (en) 2021-03-18 2024-11-13 Dexel S.A. Bracelet clasp comprising a device for adjusting the length of the bracelet allowing rapid fitting

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EP3666110A1 (en) * 2018-12-13 2020-06-17 Omega SA Adjustable bracelet clasp
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