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EP1588640B1 - Length adjustment device of a strap, especially for a wristwatch strap - Google Patents

Length adjustment device of a strap, especially for a wristwatch strap Download PDF

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Publication number
EP1588640B1
EP1588640B1 EP04009671A EP04009671A EP1588640B1 EP 1588640 B1 EP1588640 B1 EP 1588640B1 EP 04009671 A EP04009671 A EP 04009671A EP 04009671 A EP04009671 A EP 04009671A EP 1588640 B1 EP1588640 B1 EP 1588640B1
Authority
EP
European Patent Office
Prior art keywords
cable
adjustment
pulley
adjustment device
band
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.)
Expired - Lifetime
Application number
EP04009671A
Other languages
German (de)
French (fr)
Other versions
EP1588640A1 (en
Inventor
Carlo Albisetti
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.)
Swatch Group Management Services AG
Original Assignee
Swatch Group Management Services AG
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 Swatch Group Management Services AG filed Critical Swatch Group Management Services AG
Priority to DE602004005006T priority Critical patent/DE602004005006T2/en
Priority to AT04009671T priority patent/ATE354985T1/en
Priority to EP04009671A priority patent/EP1588640B1/en
Priority to US11/109,708 priority patent/US20050237864A1/en
Priority to JP2005123320A priority patent/JP2005305170A/en
Priority to CN200510066347.7A priority patent/CN1689475A/en
Publication of EP1588640A1 publication Critical patent/EP1588640A1/en
Application granted granted Critical
Publication of EP1588640B1 publication Critical patent/EP1588640B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a device for adjusting the length of a band, particularly but not exclusively a watch strap for an extension or shortening thereof according to the wish of the wearer.
  • the tightening of the wristband on the wrist of the wearer must therefore be able to be precisely adjusted to place the watch in good conditions of measurement of the pulse and maintained under these conditions of adjustment even in difficult working conditions such as during a foot race. which the bracelet is subjected to shocks and important vibrations. During these efforts, the wrist tends to inflate, the wearer must be able to reduce the tightening of the bracelet without losing the measurement.
  • the document CH-A-665327 describes a device for attaching a bracelet to a watch case for winding the bracelet around a pillar and thus reduce or lengthen the size of the bracelet.
  • This document does not show a mechanism for locking the winding or unwinding of the bracelet, but only one or more bosses creating an obstacle to the exit of the link of the pillar.
  • This device does not allow a precise adjustment of the size of the bracelet, does not ensure the maintenance of such a setting during use and is therefore not suitable for the uses mentioned above.
  • Document DE-U-20020360 discloses a device for adjusting the length of a watch strap.
  • the two ends of the bracelet are attached to a winding shaft, housed in a two-part housing, which shaft can be rotated by means of a wheel, fixed in its position and released by a decoupling mechanism.
  • the winding shaft comprises a disc which has on its upper surface a notch which cooperates with a corresponding notch on a disc attached to and under the wheel, the latter disc being surrounded by a ring gear provided with an external toothing in which a locking pawl integral with the housing is inserted.
  • Means for centering the device as well as return means in the notched position of the device are further provided.
  • This device with its many mechanical parts is complicated, expensive and, given the large number of parts involved, subject to disturbances. In addition, this device does not guarantee a controlled unwinding of the bracelet but only a release of the winding shaft that can allow unrolling the bracelet. In addition, this device acts directly on the bracelet by wrapping it around the winding shaft. This device is therefore limited to certain types of watch straps, that is to say the bracelets that can be easily wound, and has the disadvantage of damaging the bracelet by its direct action on it.
  • GB-A-27973 discloses a watch strap that can be adjusted by a chain traversing the sliding links of the bracelet, said chain being actuated by a pulley.
  • US-A-5042177 discloses a rotation closure for a ski boot comprising a pulley operating a traction member.
  • the problem underlying the present invention is therefore to perform a bidirectional adjustment of the length of a band quickly and accurately, this setting to be maintained under all conditions of use.
  • the present invention proposes a device for adjusting the length of a strip, this strip comprising two parts that can being close together or distant from each other, the device comprising a set of adjustment of the length of the strip carried by the first part and comprising at least one cable, this cable connecting the first part with the second, this assembly adjusting member comprising means for actuating the adjustment by the carrier, a control pulley secured to this means to which is fixed one end of the cable and around which a portion of the cable is wound, this pulley being associated with means locking device capable of locking it in rotation in a plurality of adjustment positions, characterized in that the other end of the cable is fixed on the first part of the strip, so as to doubly connect the first part with the second part by redirecting the cable from the second to the first part.
  • the actuating means may be a wheel, on the one hand movable axially between a locking position and a setting position, the wheel being pushed into its locking position by an elastic means, and secondly rotatable for adjust the length of the band.
  • the adjustment pulley is housed inside a hollow body secured to the part and comprises fins, said fins cooperating with locking means provided on the body which comprises at its upper part notches adapted to the fins for receiving of these in order to block the rotation of the adjusting pulley.
  • This body may be formed of two parts fixed together irremovably.
  • the other end of the cable is fixed on the first part of the strip and a portion of the intermediate zone of the cable is received in the second part so as to slide therein.
  • a return auxiliary pulley may be provided on the second part of the strip to redirect the cable towards the first part.
  • the present invention also relates to a watch strap with one of the length adjustment devices as described above.
  • the cable 3 has one of its ends fixed on the part 1 at 3a and the other in the adjustment assembly 4, 5, 3 on the drum of the pulley 5 in the example shown. From each of these two ends, the cable 3 extends towards the part 2 in two substantially parallel branches terminated by a U or V shape at the point where the cable passes through the part 2.
  • the part 2 is provided with an insert 8 comprising a channel 8a for receiving the cable 3.
  • the channel surface in which the cable slides preferably has a low coefficient of friction to facilitate the movement of the cable therein. This surface may for example be coated with a Teflon layer.
  • the cable 3 can also be coated with such a layer.
  • FIGS. 2a and 2b respectively show a tensioned adjustment position and one of the possible relaxed adjustment positions obtained by the adjustment assembly 4, 5, 3.
  • the wheel 4 has not been shown to allow to see the rest of the adjustment assembly and in particular the cooperation of the adjusting pulley 5 and the cable 3.
  • the adjustment assembly comprises a control pulley 5 around which the cable 3 is wound.
  • This figure illustrates the maximum winding position of the cable and therefore of maximum shortening of the bracelet with the parts 1 and 2 of the bracelet attached.
  • the adjustment pulley 5 has been counterclockwise rotated and has unwound a portion of cable, thus making it possible to exclude the parts 1 and 2 and therefore to lengthen the bracelet.
  • the bracelet is then in a relaxed adjustment position. There are thus several relaxed adjustment positions, these positions corresponding to a more or less pronounced unwinding of the cable 3 of the adjusting pulley 5.
  • the cable 3 has thus slid into the channel of the insert 8 of the part 2 of the bracelet, hence the need to use an insert 8 and a cable 3 with the lowest coefficient of friction possible.
  • the pulley 5 comprises at its periphery fins 9 which cooperate with notches 9 'of the same shape formed on the upper part 6 of a body 6 and 6' included in Part 1 of the bracelet to allow the insertion of these fins 9 in this upper part 6 and thus block the adjusting pulley 5 in a setting position as will be described in detail below.
  • these fins 9 may advantageously form a guide flange of the cable 3 during its winding and ensure its maintenance around the adjustment pulley 5.
  • FIGS. 3a and 3b describe the operation of the adjustment assembly according to the invention in the embodiment with a finned adjustment pulley 5 and a body with its upper part 6 having notches 9 'to effect the locking of the set of adjustment.
  • the wheel 4 and the adjusting pulley 5 are integral and in their adjustment position can rotate to unroll or wind the cable 3 thus adjusting the length of the bracelet; moreover the wheel 4 and the adjusting pulley 5 are axially movable between a position where the wheel 4 is in the upper position said rest position or lock and a position where the wheel 4 is in the low position called adjustment position.
  • the wheel assembly 4 and adjusting pulley 5 is biased by an elastic means, here a helical spring 7 extending between the lower surface of the wheel 4 and the lower part 6 'of the body 1, in its rest position.
  • This assembly is partially housed in a body with upper 6 and lower 6 'parts integral with the part 1 of the bracelet, a space being provided between the base of the lower part 6' of the body and the lower part of the adjusting pulley 5 to allow the latter an axial displacement in the body.
  • the pulley wheel assembly is then free to rotate and the adjustment of the cable can be made.
  • the adjustment pulley 5 can therefore be turned to a position where its fins 9 will be again in correspondence with the notches of the upper part 6 of the body: at this moment the wearer can release the pressure on the wheel 4, the elastic means 7 will recall the entire wheel-pulley in its rest position, that is to say with the wheel 4 in high position and the fins 9 of the adjusting pulley 5 housed again in the notches of the upper part 6 of the body: the system for adjusting the length of the bracelet will be blocked again.
  • the wheel 4 may be made of a transparent material to allow the user easy alignment of the fins 9 of the adjusting pulley 5 with the corresponding notches of the upper part 6 of the body.
  • This easy alignment can also be achieved with printed or raised landmarks arranged on the wheel 4 and on the upper part 6 of the body.
  • the adjustment device shown in the accompanying figures represents a first embodiment of the invention.
  • the adjustment pulley has on one of its upper or lower faces concentric recesses for receiving a finger protruding from the first part of the strip, this finger being introduced into one of the concentric recesses when the resilient means recalls the set of actuating means-adjusting pulley in its locking position.
  • the spring 7 can be replaced by a leaf spring disposed at the bottom of the housing of the lower portion 6 'of the body for receiving the adjusting pulley 5, this spring biasing the adjusting pulley 5 upwards.
  • notches have been shown on the upper part 6 of the body but can be placed at other levels. It is even possible to provide a low rest position of the wheel 4 with a setting position with high wheel by reversing the effect of the return means.
  • the device of the present invention provides a simple way to a precise and safe adjustment of the band.
  • this device can find an application in the case of a metal bracelet or it is better not to remove or add links.
  • the parts 1 and 2 of the band could form two particular links in the chain of links, these two parts having for this purpose means of connection to the rest of the chain of links.
  • the cable could for example cross several links to distribute the spacing with the first part between several links.
  • the bracelet is constituted by two son, preferably elastic, successively fitting the links, these two son can be replaced by the cable associated with the adjustment assembly according to the present invention.
  • the setting could be spread over all the links by reducing the play between each of them which would not hinder the aesthetics.

Landscapes

  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Surgical Instruments (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Buckles (AREA)

Abstract

The device has a thumbwheel (4) rotated to adjust length of a strap and a cable (3) connecting two parts (1, 2) of the strap. An adjustment pulley (5) is integrated with the thumbwheel to which one of ends of the cable is fixed and around which the cable is rolled. The pulley has flanges cooperating with notches arranged on an upper part (6) of a body to insert the flanges in the part for locking the pulley in an adjustment position. An independent claim is also included for a wristwatch strap having a length adjustment device.

Description

La présente invention concerne un dispositif de réglage de la longueur d'une bande, notamment mais pas exclusivement d'un bracelet de montre permettant un rallongement ou un raccourcissement de celui-ci selon le souhait du porteur.The present invention relates to a device for adjusting the length of a band, particularly but not exclusively a watch strap for an extension or shortening thereof according to the wish of the wearer.

Par exemple pour un bracelet de montre, lorsque les conditions climatiques font varier les paramètres du poignet, notamment en été quand celui-ci a tendance à gonfler, il est souvent nécessaire de rallonger le bracelet pour des raisons de confort.For example for a watch strap, when the weather conditions vary the wrist parameters, especially in summer when it tends to inflate, it is often necessary to extend the bracelet for reasons of comfort.

Dans le cas d'utilisation d'une montre à fonction multiples, par exemple un cardiofréquencemètre utilisant des capteurs placés dans le fond de la boîte de montre et devant venir en contact étroit avec le poignet du porteur, il est nécessaire de garantir un bon serrage lors de la prise de mesure, ce serrage devant être maintenu pendant toute l'opération du cardiofréquencemètre. En effet, comme de tels appareils réalisent généralement des diverses opérations telles que des moyennes de mesures à partir des valeurs de pouls mesurées pendant un temps donné, il est nécessaire d'assurer qu'aucune interruption de mesure ne vienne fausser la moyenne pour que la valeur affichée soit bien représentative de l'effort fourni pendant ledit temps donné.In the case of using a multi-function watch, for example a heart rate monitor using sensors placed in the bottom of the watch case and having to come into close contact with the wrist of the wearer, it is necessary to guarantee a good tightening when taking measurement, this clamping to be maintained during the entire operation of the heart rate monitor. Indeed, as such devices generally perform various operations such as averages of measurements from the pulse values measured for a given time, it is necessary to ensure that no measurement interruption falsifies the average for the displayed value is well representative of the effort provided during said given time.

Le serrage du bracelet sur le poignet du porteur doit donc pouvoir être réglé précisément pour placer la montre dans de bonnes conditions de mesure du pouls et maintenu dans ces conditions de réglage même dans des conditions de travail difficiles comme lors d'une course à pied pendant laquelle le bracelet est soumis à des chocs et des vibrations importants. Durant ces efforts, le poignet ayant tendance à gonfler, le porteur doit pouvoir diminuer le serrage du bracelet sans perdre la mesure.The tightening of the wristband on the wrist of the wearer must therefore be able to be precisely adjusted to place the watch in good conditions of measurement of the pulse and maintained under these conditions of adjustment even in difficult working conditions such as during a foot race. which the bracelet is subjected to shocks and important vibrations. During these efforts, the wrist tends to inflate, the wearer must be able to reduce the tightening of the bracelet without losing the measurement.

De même, lors de l'utilisation normale de la montre, un serrage prononcé sur le poignet de l'utilisateur comme lors de prises de mesures n'est plus nécessaire et même indésirable pour des raisons de commodité : il existe donc un besoin de pouvoir modifier les conditions de serrage du bracelet selon l'utilisation de la montre cardiofréquencemètre ou analogue, cette modification devant se faire le plus facilement possible, notamment sans avoir besoin d'ôter la montre du poignet.Similarly, during normal use of the watch, a pronounced tightening on the wrist of the user as when taking measurements is no longer necessary and even undesirable for the sake of convenience: there is therefore a need for power. modify the tightening conditions of the bracelet according to the use of the heart rate watch or the like, this modification to be made as easily as possible, in particular without the need to remove the wrist watch.

Aucune solution technique satisfaisante à ces difficultés n'a été jusqu'à maintenant proposée.No satisfactory technical solution to these difficulties has so far been proposed.

Le document CH-A-665327 décrit un dispositif d'attache d'un bracelet à un boîtier de montre permettant d'enrouler le bracelet autour d'un pilier et ainsi de réduire ou de rallonger la taille du bracelet. Ce document ne montre pas de mécanisme de verrouillage de l'enroulement ou du déroulement du bracelet, mais seulement un ou des bossages créant un obstacle à la sortie du lien du pilier. Ce dispositif ne permet pas un réglage précis de la taille du bracelet, n'assure pas le maintien d'un tel réglage pendant l'utilisation et ne convient donc pas aux utilisations précédemment évoquées.The document CH-A-665327 describes a device for attaching a bracelet to a watch case for winding the bracelet around a pillar and thus reduce or lengthen the size of the bracelet. This document does not show a mechanism for locking the winding or unwinding of the bracelet, but only one or more bosses creating an obstacle to the exit of the link of the pillar. This device does not allow a precise adjustment of the size of the bracelet, does not ensure the maintenance of such a setting during use and is therefore not suitable for the uses mentioned above.

Le document DE-U-20020360 divulgue un dispositif pour le réglage de la longueur d'un bracelet de montre. Les deux extrémités du bracelet sont fixées à un arbre d'enroulement, logé dans un boîtier en deux parties, arbre qui peut être tourné grâce à une molette, être fixé dans sa position et être libéré grâce à un mécanisme de découplage. Pour ce faire, l'arbre d'enroulement comporte un disque qui présente à sa surface supérieure un crantage qui coopère avec un crantage correspondant sur un disque fixé à et sous la molette, ce dernier disque étant entouré d'une couronne dentée munie d'une denture extérieure dans laquelle s'insère un cliquet de blocage solidaire du boîtier. Des moyens pour le centrage du dispositif de même que des moyens de rappel en position crantée du dispositif sont en outre prévus.Document DE-U-20020360 discloses a device for adjusting the length of a watch strap. The two ends of the bracelet are attached to a winding shaft, housed in a two-part housing, which shaft can be rotated by means of a wheel, fixed in its position and released by a decoupling mechanism. To do this, the winding shaft comprises a disc which has on its upper surface a notch which cooperates with a corresponding notch on a disc attached to and under the wheel, the latter disc being surrounded by a ring gear provided with an external toothing in which a locking pawl integral with the housing is inserted. Means for centering the device as well as return means in the notched position of the device are further provided.

Ce dispositif avec ses nombreuses pièces mécaniques est compliqué, coûteux et, vu le grand nombre de pièces impliquées, sujet à des dérèglements. En outre, ce dispositif ne garantit pas un déroulement contrôlé du bracelet mais seulement une libération de l'arbre d'enroulement qui peut permettre de dérouler le bracelet. De plus, ce dispositif agit directement sur le bracelet en l'enroulant autour de l'arbre d'enroulement. Ce dispositif est donc limité à certains types de bracelets de montre, c'est-à-dire les bracelets qui peuvent être facilement enroulés, et a le désavantage d'endommager le bracelet par son action directe sur celui-ci.This device with its many mechanical parts is complicated, expensive and, given the large number of parts involved, subject to disturbances. In addition, this device does not guarantee a controlled unwinding of the bracelet but only a release of the winding shaft that can allow unrolling the bracelet. In addition, this device acts directly on the bracelet by wrapping it around the winding shaft. This device is therefore limited to certain types of watch straps, that is to say the bracelets that can be easily wound, and has the disadvantage of damaging the bracelet by its direct action on it.

Le document GB-A-27973 décrit un bracelet de montre pouvant être ajusté par une chaîne traversant les maillons coulissants du bracelet, ladite chaîne étant actionnée par une poulie.GB-A-27973 discloses a watch strap that can be adjusted by a chain traversing the sliding links of the bracelet, said chain being actuated by a pulley.

Le document US-A-5042177 décrit une fermeture par rotation pour une chaussure de ski comprenant une poulie actionnant un élément de traction.US-A-5042177 discloses a rotation closure for a ski boot comprising a pulley operating a traction member.

Le problème à la base de la présente invention est donc de pouvoir effectuer un réglage bidirectionnel de la longueur d'une bande de manière rapide et précise, ce réglage devant être maintenu dans toutes conditions d'utilisation.The problem underlying the present invention is therefore to perform a bidirectional adjustment of the length of a band quickly and accurately, this setting to be maintained under all conditions of use.

Pour résoudre ce problème, la présente invention propose dispositif de réglage de la longueur d'une bande, cette bande comprenant deux parties pouvant être rapprochées ou éloignées l'une de l'autre, le dispositif comportant un ensemble de réglage de la longueur de la bande, porté par la première partie et comprenant au moins un câble, ce câble reliant la première partie avec la seconde, cet ensemble de réglage comportant un moyen d'actionnement du réglage par le porteur, une poulie de réglage solidaire de ce moyen à laquelle est fixée une des extrémités du câble et autour de laquelle s'enroule une partie du câble, cette poulie étant associée à des moyens de verrouillage capables de la bloquer en rotation dans une pluralité de positions de réglage, caractérisé en ce que l'autre extrémité du câble est fixée sur la première partie de la bande, de manière à relier doublement la première partie avec la seconde en redirigeant le câble de la seconde vers la première partie.To solve this problem, the present invention proposes a device for adjusting the length of a strip, this strip comprising two parts that can being close together or distant from each other, the device comprising a set of adjustment of the length of the strip carried by the first part and comprising at least one cable, this cable connecting the first part with the second, this assembly adjusting member comprising means for actuating the adjustment by the carrier, a control pulley secured to this means to which is fixed one end of the cable and around which a portion of the cable is wound, this pulley being associated with means locking device capable of locking it in rotation in a plurality of adjustment positions, characterized in that the other end of the cable is fixed on the first part of the strip, so as to doubly connect the first part with the second part by redirecting the cable from the second to the first part.

Le moyen d'actionnement peut être une molette, d'une part mobile axialement entre une position de verrouillage et une position de réglage, la molette étant poussée dans sa position de verrouillage par un moyen élastique, et d'autre part mobile en rotation pour effectuer le réglage de la longueur de la bande.The actuating means may be a wheel, on the one hand movable axially between a locking position and a setting position, the wheel being pushed into its locking position by an elastic means, and secondly rotatable for adjust the length of the band.

La poulie de réglage est logée à l'intérieur d'un corps creux solidaire de la partie et comprend des ailettes, lesdites ailettes coopérant avec des moyens de verrouillage prévus sur le corps qui comporte à sa partie supérieure des encoches adaptées aux ailettes pour la réception de celles-ci afin de bloquer la rotation de la poulie de réglage. Ce corps peut être formé de deux parties fixées entre elles de manière inamovible.The adjustment pulley is housed inside a hollow body secured to the part and comprises fins, said fins cooperating with locking means provided on the body which comprises at its upper part notches adapted to the fins for receiving of these in order to block the rotation of the adjusting pulley. This body may be formed of two parts fixed together irremovably.

L'autre extrémité du câble est fixée sur la première partie de la bande et une portion de la zone intermédiaire du câble est reçue dans la seconde partie de manière à pouvoir coulisser dans celle-ci.The other end of the cable is fixed on the first part of the strip and a portion of the intermediate zone of the cable is received in the second part so as to slide therein.

Avantageusement, une poulie auxiliaire de renvoi, peut être prévue sur la seconde partie de la bande pour rediriger le câble vers la première partie.Advantageously, a return auxiliary pulley may be provided on the second part of the strip to redirect the cable towards the first part.

La présente invention concerne aussi un bracelet de montre avec un des dispositifs de réglage de longueur comme décrits plus haut.The present invention also relates to a watch strap with one of the length adjustment devices as described above.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui va suivre, faite au regard des dessins annexés et donnant à titre d'exemple mais nullement limitatif, une forme avantageuse de réalisation du dispositif de réglage de la longueur d'une bande et dans lesquels :

  • la figure 1 représente une vue de dessus en perspective des deux parties de la bande avec la molette de réglage sur l'une des parties.
  • les figures 2a et 2b représentent une vue de dessus en perspective du système de réglage de la longueur de la bande selon une forme de réalisation de l'invention avec une poulie sous forme de corps à ailettes respectivement dans la position de réglage tendu et dans la position de réglage détendu,
  • les figures 3a et 3b représentent une coupe des deux parties de la bande et leur dispositif de réglage de la longueur de la bande avec la poulie respectivement dans ses positions haute et basse.
Other features and advantages of the present invention will emerge from the description which follows, made with reference to the accompanying drawings and giving by way of example but not limited to, an advantageous embodiment of the device for adjusting the length of a band and in which:
  • Figure 1 shows a top view in perspective of the two parts of the band with the adjustment wheel on one of the parts.
  • Figures 2a and 2b show a perspective top view of the web length adjustment system according to one embodiment of the invention with a pulley in the form of a finned body respectively in the tensioned adjustment position and in the relaxed adjustment position,
  • Figures 3a and 3b show a section of the two parts of the band and their device for adjusting the length of the band with the pulley respectively in its high and low positions.

A la figure 1, on voit deux parties 1 et 2 d'une bande, formant un bracelet de montre dans cet exemple, ces deux parties étant reliées entre elles par un câble 3 qui permet de les écarter ou de les rapprocher et ainsi de régler la longueur utile du bracelet selon les besoins du porteur. Ce réglage de longueur du bracelet est effectué manuellement par le porteur en pressant et tournant une molette 4 formant le moyen d'actionnement et située à la partie supérieure de l'ensemble de réglage comportant la molette 4, une poulie 5, et le câble 3 qui sera décrit en détail ci-après.In Figure 1, we see two parts 1 and 2 of a band, forming a watch band in this example, these two parts being interconnected by a cable 3 which allows to separate or bring them together and thus to adjust the useful length of the bracelet according to the needs of the wearer. This length adjustment of the bracelet is performed manually by the wearer by pressing and turning a knob 4 forming the actuating means and located at the upper part of the adjustment assembly comprising the wheel 4, a pulley 5, and the cable 3 which will be described in detail below.

Comme cela ressort des figures 2a, 2b, 3a et 3b, le câble 3 a une de ses extrémités fixée sur la partie 1 en 3a et l'autre dans l'ensemble de réglage 4, 5, 3 sur le tambour de la poulie 5 dans l'exemple représenté. A partir de chacune de ces deux extrémités, le câble 3 s'étend vers la pièce 2 en deux branches sensiblement parallèles terminées par une forme de U ou de V à l'endroit où le câble traverse la partie 2. De manière avantageuse, la partie 2 est munie d'un insert 8 comportant un canal 8a pour la réception du câble 3. La surface du canal dans lequel coulisse le câble présente préférentiellement un faible coefficient de frottement pour faciliter le mouvement du câble dans celui-ci. Cette surface peut être par exemple revêtue d'une couche de Téflon. De même le câble 3 peut également être revêtu d'une telle couche. Selon une variante non représentée, on peut également de prévoir un moyen de guidage auxiliaire du câble dans l'insert, ce moyen de guidage pouvant prendre la forme d'une poulie de renvoi disposée à la base du U ou du V de l'insert.As can be seen from FIGS. 2a, 2b, 3a and 3b, the cable 3 has one of its ends fixed on the part 1 at 3a and the other in the adjustment assembly 4, 5, 3 on the drum of the pulley 5 in the example shown. From each of these two ends, the cable 3 extends towards the part 2 in two substantially parallel branches terminated by a U or V shape at the point where the cable passes through the part 2. Advantageously, the part 2 is provided with an insert 8 comprising a channel 8a for receiving the cable 3. The channel surface in which the cable slides preferably has a low coefficient of friction to facilitate the movement of the cable therein. This surface may for example be coated with a Teflon layer. Similarly, the cable 3 can also be coated with such a layer. According to a variant not shown, it is also possible to provide an auxiliary guide means of the cable in the insert, this guide means being in the form of a return pulley disposed at the base of the U or the V of the insert .

Les figures 2a et 2b montrent respectivement une position de réglage tendu et une des positions de réglage détendu possible obtenue par l'ensemble de réglage 4, 5, 3. Sur ces figures, la molette 4 n'a pas été représentée pour permettre de voir le reste de l'ensemble de réglage et notamment la coopération de la poulie de réglage 5 et du câble 3.FIGS. 2a and 2b respectively show a tensioned adjustment position and one of the possible relaxed adjustment positions obtained by the adjustment assembly 4, 5, 3. In these figures, the wheel 4 has not been shown to allow to see the rest of the adjustment assembly and in particular the cooperation of the adjusting pulley 5 and the cable 3.

A la figure 2a, on voit notamment que l'ensemble de réglage comprend une poulie de réglage 5 autour de laquelle s'enroule le câble 3. Cette figure illustre la position d'enroulement maximal du câble et donc de raccourcissement maximal du bracelet avec les parties 1 et 2 du bracelet jointes.In FIG. 2a, it can be seen in particular that the adjustment assembly comprises a control pulley 5 around which the cable 3 is wound. This figure illustrates the maximum winding position of the cable and therefore of maximum shortening of the bracelet with the parts 1 and 2 of the bracelet attached.

Dans le cas de la figure 2b, la poulie de réglage 5 a subi une rotation dans le sens antihoraire et a déroulé une portion de câble permettant ainsi d'écarter les parties 1 et 2 et donc de rallonger le bracelet. Le bracelet est alors dans une position de réglage détendu. Il existe ainsi plusieurs positions de réglage détendu, ces positions correspondant à un déroulement plus ou moins prononcé du câble 3 de la poulie de réglage 5. Le câble 3 a donc coulissé dans le canal de l'insert 8 de la pièce 2 du bracelet, d'où la nécessité d'utiliser un insert 8 et un câble 3 avec le plus faible coefficient de frottement possible.In the case of FIG. 2b, the adjustment pulley 5 has been counterclockwise rotated and has unwound a portion of cable, thus making it possible to exclude the parts 1 and 2 and therefore to lengthen the bracelet. The bracelet is then in a relaxed adjustment position. There are thus several relaxed adjustment positions, these positions corresponding to a more or less pronounced unwinding of the cable 3 of the adjusting pulley 5. The cable 3 has thus slid into the channel of the insert 8 of the part 2 of the bracelet, hence the need to use an insert 8 and a cable 3 with the lowest coefficient of friction possible.

Dans les modes de réalisation des figures 2a et 2b, la poulie 5 comprend à sa périphérie des ailettes 9 qui coopèrent avec des encoches 9' de même forme ménagée sur la partie supérieure 6 d'un corps 6 et 6' compris dans la partie 1 du bracelet pour permettre l'insertion de ces ailettes 9 dans cette partie supérieure 6 et ainsi bloquer la poulie de réglage 5 dans une position de réglage comme cela sera décrit en détail ci-après. Accessoirement, ces ailettes 9 peuvent avantageusement former un flasque de guidage du câble 3 lors de son enroulement et assurer son maintien autour de la poulie de réglage 5.In the embodiments of Figures 2a and 2b, the pulley 5 comprises at its periphery fins 9 which cooperate with notches 9 'of the same shape formed on the upper part 6 of a body 6 and 6' included in Part 1 of the bracelet to allow the insertion of these fins 9 in this upper part 6 and thus block the adjusting pulley 5 in a setting position as will be described in detail below. Incidentally, these fins 9 may advantageously form a guide flange of the cable 3 during its winding and ensure its maintenance around the adjustment pulley 5.

Les figures 3a et 3b décrivent le fonctionnement de l'ensemble de réglage selon l'invention dans la forme de réalisation avec une poulie de réglage 5 à ailettes et un corps avec sa partie supérieure 6 présentant des encoches 9' pour réaliser le verrouillage de l'ensemble de réglage. Comme déjà expliqué aux figures 2a et 2b, la molette 4 et la poulie de réglage 5 sont solidaires et dans leur position de réglage peuvent effectuer une rotation pour dérouler ou enrouler le câble 3 réglant ainsi la longueur du bracelet ; de plus la molette 4 et la poulie de réglage 5 sont mobiles axialement entre une position où la molette 4 est en position haute dite position de repos ou verrouillage et une position où la molette 4 est en position basse dite position de réglage. L'ensemble molette 4 et poulie de réglage 5 est rappelé par un moyen élastique, ici un ressort hélicoïdal 7 s'étendant entre la surface inférieure de la molette 4 et la partie inférieure 6' du corps 1, dans sa position de repos. Cet ensemble est partiellement logé dans un corps avec des parties supérieure 6 et inférieure 6' solidaires de la partie 1 du bracelet, un espace étant ménagé entre la base de la partie inférieure 6' du corps et la partie inférieure de la poulie de réglage 5 pour permettre à cette dernière un déplacement axial dans le corps.FIGS. 3a and 3b describe the operation of the adjustment assembly according to the invention in the embodiment with a finned adjustment pulley 5 and a body with its upper part 6 having notches 9 'to effect the locking of the set of adjustment. As already explained in Figures 2a and 2b, the wheel 4 and the adjusting pulley 5 are integral and in their adjustment position can rotate to unroll or wind the cable 3 thus adjusting the length of the bracelet; moreover the wheel 4 and the adjusting pulley 5 are axially movable between a position where the wheel 4 is in the upper position said rest position or lock and a position where the wheel 4 is in the low position called adjustment position. The wheel assembly 4 and adjusting pulley 5 is biased by an elastic means, here a helical spring 7 extending between the lower surface of the wheel 4 and the lower part 6 'of the body 1, in its rest position. This assembly is partially housed in a body with upper 6 and lower 6 'parts integral with the part 1 of the bracelet, a space being provided between the base of the lower part 6' of the body and the lower part of the adjusting pulley 5 to allow the latter an axial displacement in the body.

A la figure 3a, quand la molette 4 est en position haute, les ailettes 9 de la poulie de réglage 5 sont logées dans des encoches de forme correspondante de la partie supérieure 6 du corps solidaire de la partie 1: la poulie de réglage 5 est donc bloquée en rotation et l'enroulement ou le déroulement du câble 3 ne peut s'effectuer.In FIG. 3a, when the wheel 4 is in the up position, the fins 9 of the adjustment pulley 5 are housed in correspondingly shaped slots of the upper part 6 of the body integral with the part 1: the adjustment pulley 5 is therefore locked in rotation and winding or unwinding of the cable 3 can not be done.

A la figure 3b, pour effectuer le réglage de la longueur du bracelet, le porteur appuie sur la molette 4 ce qui a pour effet d'enfoncer la poulie de réglage 5 dans le corps et de dégager les ailettes des encoches prévues sur la partie supérieure 6 du corps.In FIG. 3b, in order to adjust the length of the bracelet, the wearer presses on the wheel 4, which has the effect of pushing the adjustment pulley 5 into the body and disengaging the fins from the notches provided on the upper part. 6 of the body.

L'ensemble molette poulie est alors libre en rotation et le réglage du câble peut s'effectuer. La poulie de réglage 5 peut donc être tournée jusqu'à une position où ses ailettes 9 se trouveront à nouveau en correspondance avec les encoches de la partie supérieure 6 du corps: à ce moment le porteur pourra relâcher la pression sur la molette 4, le moyen élastique 7 rappellera l'ensemble molette-poulie dans sa position de repos, c'est-à-dire avec la molette 4 en position haute et les ailettes 9 de la poulie de réglage 5 logées à nouveau dans les encoches de la partie supérieure 6 du corps: le système de réglage de la longueur du bracelet sera à nouveau bloqué.The pulley wheel assembly is then free to rotate and the adjustment of the cable can be made. The adjustment pulley 5 can therefore be turned to a position where its fins 9 will be again in correspondence with the notches of the upper part 6 of the body: at this moment the wearer can release the pressure on the wheel 4, the elastic means 7 will recall the entire wheel-pulley in its rest position, that is to say with the wheel 4 in high position and the fins 9 of the adjusting pulley 5 housed again in the notches of the upper part 6 of the body: the system for adjusting the length of the bracelet will be blocked again.

Avantageusement la molette 4 peut être réalisée en un matériau transparent pour permettre à l'utilisateur un alignement aisé des ailettes 9 de la poulie de réglage 5 avec les encoches correspondantes de la partie supérieure 6 du corps. Cet alignement aisé peut également être réalisé avec des repères imprimés ou en relief arrangé sur la molette 4 et sur la partie supérieure 6 du corps.Advantageously, the wheel 4 may be made of a transparent material to allow the user easy alignment of the fins 9 of the adjusting pulley 5 with the corresponding notches of the upper part 6 of the body. This easy alignment can also be achieved with printed or raised landmarks arranged on the wheel 4 and on the upper part 6 of the body.

Le dispositif de réglage montré aux figures annexées représente une première forme de réalisation de l'invention.The adjustment device shown in the accompanying figures represents a first embodiment of the invention.

D'autres formes de réalisation du mécanisme de verrouillage avec d'autres moyens de blocage que des encoches sont aussi possibles.Other embodiments of the locking mechanism with other locking means than notches are also possible.

Dans une seconde forme de réalisation, la poulie de réglage comporte sur une de ses faces supérieure ou inférieure des évidements concentriques pour la réception d'un doigt dépassant de la première partie de la bande, ce doigt étant introduit dans un des évidements concentriques quand le moyen élastique rappelle l'ensemble moyen d'actionnement-poulie de réglage dans sa position de verrouillage.In a second embodiment, the adjustment pulley has on one of its upper or lower faces concentric recesses for receiving a finger protruding from the first part of the strip, this finger being introduced into one of the concentric recesses when the resilient means recalls the set of actuating means-adjusting pulley in its locking position.

En ce qui concerne la forme de réalisation décrite, des variantes des divers composants de l'ensemble de verrouillage peuvent être effectuées. Ainsi, le ressort 7 peut être remplacé par un ressort à lame disposé au fond du logement de la partie inférieure 6' du corps pour la réception de la poulie de réglage 5, ce ressort rappelant la poulie de réglage 5 vers le haut.With respect to the described embodiment, variants of the various components of the lock assembly can be made. Thus, the spring 7 can be replaced by a leaf spring disposed at the bottom of the housing of the lower portion 6 'of the body for receiving the adjusting pulley 5, this spring biasing the adjusting pulley 5 upwards.

De plus, les encoches ont été montrées sur la partie supérieure 6 du corps mais peuvent être placées à d'autres niveaux. Il est même possible de prévoir une position de repos basse de la molette 4 avec une position de réglage avec molette haute en inversant l'effet des moyens de rappel.In addition, the notches have been shown on the upper part 6 of the body but can be placed at other levels. It is even possible to provide a low rest position of the wheel 4 with a setting position with high wheel by reversing the effect of the return means.

Comme il a été vu à la lumière de la présente description, le dispositif de la présente invention permet d'obtenir de manière simple un réglage précis et sûr de la bande.As has been seen in the light of the present description, the device of the present invention provides a simple way to a precise and safe adjustment of the band.

Dans le domaine de l'horlogerie on peut constater qu'un tel dispositif répond au besoin d'un serrage rapide et fiable et que son application pour les cardio fréquencemètres apporte un avantage décisif. Il peut aussi représenter une alternative au moyen classique de fermeture d'un bracelet de montre.In the field of watchmaking it can be seen that such a device meets the need for a quick and reliable tightening and that its application for heart rate monitors provides a decisive advantage. It can also be an alternative to the conventional means of closing a watch strap.

De même, ce dispositif peut trouver une application dans le cas d'un bracelet métallique ou il s'avère préférable de ne pas enlever ou rajouter de maillons. Dans ce cas, les parties 1 et 2 de la bande pourraient former deux maillons particuliers s'insérant à la chaîne de maillons, ces deux parties comportant à cet effet des moyens de connexions au reste de la chaîne de maillons. Alternativement, le câble pourrait par exemple traverser plusieurs maillons pour répartir l'espacement avec la première partie entre plusieurs maillons. Par exemple, dans le cas où le bracelet est constitué par deux fils, de préférence élastiques, emboîtant successivement les maillons, ces deux fils peuvent être remplacés par le câble associé à l'ensemble de réglage selon la présente invention. Le réglage pourrait être réparti sur l'ensemble des maillons en réduisant le jeu entre chacun d'entre eux ce qui ne gênerait pas l'esthétique.Similarly, this device can find an application in the case of a metal bracelet or it is better not to remove or add links. In this case, the parts 1 and 2 of the band could form two particular links in the chain of links, these two parts having for this purpose means of connection to the rest of the chain of links. Alternatively, the cable could for example cross several links to distribute the spacing with the first part between several links. For example, in the case where the bracelet is constituted by two son, preferably elastic, successively fitting the links, these two son can be replaced by the cable associated with the adjustment assembly according to the present invention. The setting could be spread over all the links by reducing the play between each of them which would not hinder the aesthetics.

Claims (9)

  1. Device for adjusting the length of a band, this band comprising two parts (1 and 2) able to be moved closer to or away from each other, the device including an assembly (4, 5, 3) for adjusting the length of the band, carried by the first part (1) and including at least one cable (3), said cable (3) connecting the first part (1) to the second (2), said adjustment assembly (4, 5, 3) including means for actuating (4) the adjustment by the user, an adjustment pulley (5) secured to said means (4) to which one of the ends of the cable (3) is secured and around which a part of the cable (3) is wound, said pulley being associated with locking means (6, 7, 9) capable of blocking the pulley in rotation in a plurality of adjustment positions, characterized in that the other end of the cable (3) is secured on the first part (1) of the band, in order to attach the first part (1) to the second part (2) in a dual manner by redirecting the cable (3) from the second part (2) towards the first part (1).
  2. Adjustment device according to claim 1, characterized in that one portion of the intermediate zone of the cable (3) is received in the second part (2) so as to be able to slide therein.
  3. Adjustment device according to claim 1 or 2, characterized in that at least one additional return pulley is provided on the second part (2) of the band for redirecting the cable (3) towards the first part (1).
  4. Adjustment device according to any of claims 1 to 3, characterized in that the second part (2) of the band includes guide means for the cable (3), having a channel for receiving the cable (3), the inner surface of the channel having a predetermined friction coefficient able to facilitate the movement of the cable (3).
  5. Adjustment device according to any of claims 1 to 4, characterized in that the actuating means include a knurling roller (4) mobile axially between a locking position and an adjustment position, said knurling roller being mobile in rotation in said adjustment position.
  6. Adjustment device according to claim 5, characterized in that the actuating means (4) further includes return means for returning said knurling roller (4) to the locking position.
  7. Adjustment device according to any of claims 1 to 6, characterized in that the adjustment pulley (5) is housed inside a hollow body (6, 6') secured to the first part (1), in that said pulley includes wings (9) and in that said body comprises notches (9') provided for cooperating with said wings to block in rotation said pulley in the locking position.
  8. Adjustment device according to claim 7, characterized in that the hollow body (6, 6') is formed of two parts irremovably fixed to each other.
  9. Watchband characterized in that it includes a adjustment device according to any of claims 1 to 8.
EP04009671A 2004-04-23 2004-04-23 Length adjustment device of a strap, especially for a wristwatch strap Expired - Lifetime EP1588640B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE602004005006T DE602004005006T2 (en) 2004-04-23 2004-04-23 Length adjustment device of a band, in particular for a watch strap
AT04009671T ATE354985T1 (en) 2004-04-23 2004-04-23 LENGTH ADJUSTMENT DEVICE OF A STRAP, PARTICULARLY FOR A WATCH STRAP
EP04009671A EP1588640B1 (en) 2004-04-23 2004-04-23 Length adjustment device of a strap, especially for a wristwatch strap
US11/109,708 US20050237864A1 (en) 2004-04-23 2005-04-20 Device for adjusting the length of a band, in particular of a watch band
JP2005123320A JP2005305170A (en) 2004-04-23 2005-04-21 Device for adjusting length of band, in particular of watchband
CN200510066347.7A CN1689475A (en) 2004-04-23 2005-04-22 Device for adjusting the length of a band, in particular of a watch band

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04009671A EP1588640B1 (en) 2004-04-23 2004-04-23 Length adjustment device of a strap, especially for a wristwatch strap

Publications (2)

Publication Number Publication Date
EP1588640A1 EP1588640A1 (en) 2005-10-26
EP1588640B1 true EP1588640B1 (en) 2007-02-28

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EP04009671A Expired - Lifetime EP1588640B1 (en) 2004-04-23 2004-04-23 Length adjustment device of a strap, especially for a wristwatch strap

Country Status (6)

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US (1) US20050237864A1 (en)
EP (1) EP1588640B1 (en)
JP (1) JP2005305170A (en)
CN (1) CN1689475A (en)
AT (1) ATE354985T1 (en)
DE (1) DE602004005006T2 (en)

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Also Published As

Publication number Publication date
CN1689475A (en) 2005-11-02
JP2005305170A (en) 2005-11-04
EP1588640A1 (en) 2005-10-26
US20050237864A1 (en) 2005-10-27
ATE354985T1 (en) 2006-03-15
DE602004005006T2 (en) 2007-12-13
DE602004005006D1 (en) 2007-04-12

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