EP1916577A2 - Screwing crown - Google Patents

Screwing crown Download PDF

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Publication number
EP1916577A2
EP1916577A2 EP07118965A EP07118965A EP1916577A2 EP 1916577 A2 EP1916577 A2 EP 1916577A2 EP 07118965 A EP07118965 A EP 07118965A EP 07118965 A EP07118965 A EP 07118965A EP 1916577 A2 EP1916577 A2 EP 1916577A2
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EP
European Patent Office
Prior art keywords
head
piston
tube
crown
thread
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.)
Withdrawn
Application number
EP07118965A
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German (de)
French (fr)
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EP1916577A3 (en
Inventor
Laurent Coste
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.)
Pibor Iso SA
Original Assignee
Pibor Iso 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 Pibor Iso SA filed Critical Pibor Iso SA
Publication of EP1916577A2 publication Critical patent/EP1916577A2/en
Publication of EP1916577A3 publication Critical patent/EP1916577A3/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems
    • G04B37/103—Hermetic sealing of openings, joints, passages or slits of winding stems by screwing the crown onto the case

Definitions

  • the present invention relates to the field of watchmaking and relates, more particularly to a screw-type watch crown, such as a winding crown.
  • the head 12 may have a screwed state on the thread 11 of the screwing tube 10 when the user does not need to act on the crown.
  • the screwed state is defined by any engagement of the threaded portion 13 in the thread 11.
  • the user unscrews the head 12, which, under the action of the spring member 18, engages the piston 14 and the control rod.
  • the head 12 is thus in an unscrewed state and occupies its first active position which is generally that of reassembly.
  • the unscrewed state is defined by the absence of engagement between the threaded portion 13 in the thread 11.
  • crown In some military or sports timepieces, it also happens that the crown is protected by a crown cover device which can make it more difficult action on the head 12. In particular, it can be difficult for the wearer to perform the combination of thrust actions and rotation of the head.
  • the object of the present invention is to provide a ring whose actuation is facilitated so that it can be used advantageously in parts equipped with crown cover devices.
  • the invention relates to a screw-in crown as described in the second paragraph of the present application, arranged so that the spring member is at its maximum length when the threaded portion of the head is in contact. threading of the screwing tube.
  • the minimum length of the spring member is defined as that which it occupies when the head is completely screwed.
  • At least one abutment element is arranged with reference to the spring member to determine its maximum length, a connecting member between the head and the spring is movable in a stroke defined by the abutment element and the minimum position spring.
  • the stroke of the head in its screwed state is greater than the stroke of the connecting member.
  • the stroke of the head in its screwed state is the distance it travels between its maximum screwing and its minimal screwing.
  • FIG. 2 shows a sectional view of a screw-in crown according to the invention.
  • the ring according to the invention comprises a screwing tube 10 which presents a first portion 10a intended to be fixed in a watch case 20 and a second portion 10b provided with a thread 11 and intended to project from the box.
  • This thread 11 is provided to cooperate with a threaded portion 13 of the inner side walls of a head 12 which forms the gripping portion of the crown.
  • the inner part of the head also has a bottom 15.
  • the ring further comprises a piston 14 for kinematically connecting the head 12 to a control rod of the watch movement housed in the box 20.
  • This control rod is generally the winding stem which allows the wearer to perform, at the same time, the reassembly of the movement and some corrections, in particular of the hour and the date if the movement comprises this function.
  • Seals 22 may be arranged, in a conventional manner, between the screwing tube 10 and the tube 16, on the one hand, and at the junction between the tube 16 and the head 12, on the other hand.
  • a spring 18 is mounted on the rod 24a which guides it.
  • a shell 26 having the shape of a cylinder with a partially open bottom is mounted on the rod 24a, the latter being fitted into the opening of the bottom. It is inserted between the head of the screw 24b and the spring 18 and is oriented towards the head 12. More particularly, the screw 24 serves as a stop element, the head 24b having a bearing zone against which the spring 18 supports the ferrule 26.
  • the maximum length of the spring 18 is defined by the distance between the end of the piston 14 and the collar 26 and can be modulated by the screwing of the screw 24. Note that the head of the screw is positioned with reference to the screwing tube 10 so that the shell can cooperate with the bottom of the head 12 to compress the spring 18.
  • the spring 18 is arranged to exert a force pushing the ferrule 26 against the head 12 and tending to move the latter from the piston 14.
  • the spring 18 ensures the engagement of the head 12 and the control rod when the head is in its unscrewed state.
  • the dimensions of the shell 26 and the screwing tube 10, on the one hand, and the dimensions and the positioning of the thread 11 and the threaded portion 13, on the other hand, are defined so that the head 12 can evolve, when unscrewed, between a first and a second position, without compressing the spring 18. This can be achieved in different ways and playing on the dimensions and positioning of the elements mentioned above.
  • the spring when unscrewing the head 12, the spring reaches its maximum length by putting the ferrule 26 in abutment against the screw head 24b, while the head 12 is still engaged with the screwing tube 10.
  • the race of the head in its screwed state is therefore greater than the stroke of the ferrule.
  • the threaded portion 13 of the head 12 comes into contact with the thread 11 of the screwing tube 10, ready to be screwed, while the spring 18 is still at its maximum length and has not yet been compressed.
  • the stroke of the head 12 to move the rod from its second position to its first position must be less than the total stroke that the head 12 can perform in the unscrewed state, that is to say it must be less than the maximum distance that can separate the threaded portion 13 of the head 12 and the thread 11 of the screwing tube 10.
  • the device described above is advantageous.
  • the head 12 When the user presses the head 12 to bring it closer to the box 20, it moves in a first step until it comes into contact with the shell 26, thus filling the gap.
  • the head 12 compresses the spring 18, as shown in Figure 6, to a certain threshold where the force reached is sufficient to push the rod into its first active position.
  • the crown is then substantially in the position of FIG.
  • the user can then rotate the head 12 so as to engage the threaded portion 13 of the head 12 on the thread 11 of the screwing tube 10, without having to simultaneously press on it.
  • the ferrule 26 not being in contact with the head 12, the spring 18 exerts no force at this time against the head 12. Only later, during the screwing of the head 12, that it comes into contact with the ferrule 26 and compresses the spring 18.
  • the user has only continue to print a rotational movement to the head 12, the advance generated by the screwing is sufficient to compress the spring back and return to the screwed position.
  • this embodiment does not require to make that very little modification compared to existing wreaths.
  • the piston 14 has a hollow cylinder shape with a partially open bottom, relatively similar to the ferrule 26 above .
  • a rod 28 provided with a head 30 is disposed inside the tube 16 through the piston 14, the head 30 cooperating with the bottom of the piston which serves as a stop element.
  • the free end of the rod 28 disposed inside the tube 16 receives a retaining ring 32 which is integral therewith. This serves as a connecting member between the head and the spring. It is advantageously removable and can be screwed onto the rod 28.
  • the spring 18 is, as in the first embodiment, mounted on the rod 28 and is supported on one side against the piston 14 and, the other side, against the retaining ring 32 sized to also form an element of the abutment.
  • the spring tension can be adjusted by acting on the position of the ring 32.
  • the dimensions of the retaining ring 32, the rod 28 and the screwing tube 10, on the one hand, and the dimensions and the positioning of the thread 11 and the threaded portion 13, d on the other hand, are defined so that the head 12 can evolve, when unscrewed, between a first and a second position, without compressing the spring.
  • the spring 18 reaches its maximum length by putting the head 30 of the rod 28 in abutment against the bottom of the piston, while the head 12 is still engaged with the screwing tube 10
  • the stroke of the head in its screwed state is therefore greater than the stroke of the retaining ring.
  • the threaded portion 13 of the head 12 is in contact with the thread 11 of the screwing tube 10, ready to be screwed, while the spring 18 is still at its maximum length and has not yet been compressed.
  • Such a device is advantageous because it requires less space than that of the first embodiment. Indeed, the space required for the displacement of the movable element (the ferrule in the first example, the rod in the second example) allowing compression of the spring, is formed in the piston, more particularly in a part which is generally dig. It is thus possible to use the invention with a short piston, which is more difficult with the first embodiment, in particular to secure the screw and the piston.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The crown has a screwing tube (10) and a threading (11). A head (12) has a threaded portion (13) cooperating with the threading, where the head presents a threaded state or an unthreaded state on the threading. A piston (14) connects the head to a control rod of a clock movement. A tube (16) is integrated to the head and is slid on the piston and at interior of the tube (10). A spring (18) is arranged in a manner to exert a force to elongate the head. The spring is at maximal length when the portion (13) enters in contact with the threading. An independent claim is also included for a method for using a screwing crown.

Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine de l'horlogerie et concerne, plus particulièrement une couronne de montre du type à visser, telle qu'une couronne de remontoir.The present invention relates to the field of watchmaking and relates, more particularly to a screw-type watch crown, such as a winding crown.

Etat de la techniqueState of the art

Les couronnes à visser sont bien connues de l'état de la technique. Comme le montre la figure 1, elles comportent généralement:

  • un tube de vissage 10 destiné à être fixé dans une boite de montre et comportant un filetage 11,
  • une tête 12 munie d'une portion filetée 13 pour être vissée sur le tube de vissage 10,
  • un piston 14 destiné à relier cinématiquement la tête à une tige de commande du mouvement horloger logé dans la boîte,
  • un tube 16 solidaire de la tête, coulissant sur le piston 14 et à l'intérieur du tube de vissage 10, et
  • un organe ressort 18 agencé de manière à exercer une force tendant à éloigner la tête 12 du piston 14.
Screw crowns are well known in the state of the art. As shown in Figure 1, they generally include:
  • a screwing tube 10 intended to be fixed in a watch case and having a thread 11,
  • a head 12 provided with a threaded portion 13 to be screwed onto the screwing tube 10,
  • a piston 14 for kinematically connecting the head to a control rod of the watch movement housed in the box,
  • a tube 16 integral with the head, sliding on the piston 14 and inside the screwing tube 10, and
  • a spring member 18 arranged to exert a force tending to move the head 12 away from the piston 14.

La tête 12 peut présenter un état vissé sur le filetage 11 du tube de vissage 10 lorsque l'utilisateur n'a pas besoin d'agir sur la couronne. L'état vissé est défini par un engagement quelconque de la portion filetée 13 dans le filetage 11. Lorsqu'il doit, soit remonter le barillet du mouvement, soit effectuer une correction, par exemple de l'heure, l'utilisateur dévisse la tête 12, ce qui, sous l'action de l'organe ressort 18, met en prise le piston 14 et la tige de commande. La tête 12 est ainsi dans un état dévissé et occupe sa première position active qui est généralement celle du remontage. L'état dévissé est défini par l'absence d'engagement entre de la portion filetée 13 dans le filetage 11.The head 12 may have a screwed state on the thread 11 of the screwing tube 10 when the user does not need to act on the crown. The screwed state is defined by any engagement of the threaded portion 13 in the thread 11. When it must either wind the barrel of the movement or make a correction, for example of the hour, the user unscrews the head 12, which, under the action of the spring member 18, engages the piston 14 and the control rod. The head 12 is thus in an unscrewed state and occupies its first active position which is generally that of reassembly. The unscrewed state is defined by the absence of engagement between the threaded portion 13 in the thread 11.

A l'instar d'une couronne normale, il suffit de tirer la tige en agissant sur la tête 12 pour mettre cette tige dans une deuxième position active permettant, par exemple, de faire une mise à l'heure.Like a normal crown, it is sufficient to pull the rod by acting on the head 12 to put the rod in a second active position allowing, for example, to set a time.

Pour revisser la tête 12 et remettre la couronne dans sa position de repos, l'utilisateur doit, simultanément, pousser la tête 12 pour vaincre la force du ressort 18 et la mettre en rotation afin de la visser.To screw the head 12 and return the crown to its rest position, the user must simultaneously push the head 12 to overcome the force of the spring 18 and rotate it to screw it.

Il en est ainsi, par exemple, du dispositif présenté dans le document CH 204 911 , dans lequel la couronne, dès lors qu'elle est en position dévissée, est toujours sujette à la pression exercée par l'organe ressort. Dans tous les modes de réalisation enseignés par ce document, il est nécessaire de comprimer l'organe ressort pour pouvoir visser la couronne sur le tube de vissage.This is the case, for example, of the device presented in the document CH 204 911 in which the crown, as soon as it is in the unscrewed position, is always subject to the pressure exerted by the spring member. In all the embodiments taught by this document, it is necessary to compress the spring member to be able to screw the crown on the screwing tube.

Dans certaines pièces d'horlogerie militaires ou sportives, il arrive en outre que la couronne soit protégée par un dispositif cache-couronne qui peut rendre plus difficile l'action sur la tête 12. Particulièrement, il peut être malaisé pour le porteur d'effectuer la combinaison d'actions de poussée et de mise en rotation de la tête.In some military or sports timepieces, it also happens that the crown is protected by a crown cover device which can make it more difficult action on the head 12. In particular, it can be difficult for the wearer to perform the combination of thrust actions and rotation of the head.

Le but de la présente invention est de proposer une couronne dont l'actionnement est facilité de manière à pouvoir être utilisée avantageusement dans des pièces équipées de dispositifs cache-couronne.The object of the present invention is to provide a ring whose actuation is facilitated so that it can be used advantageously in parts equipped with crown cover devices.

Divulgation de l'inventionDisclosure of the invention

De façon plus précise, l'invention concerne une couronne à visser telle que décrite dans le deuxième paragraphe de la présente demande, agencée de manière à ce que l'organe ressort soit à sa longueur maximale lorsque la portion filetée de la tête est au contact du filetage du tube de vissage.More specifically, the invention relates to a screw-in crown as described in the second paragraph of the present application, arranged so that the spring member is at its maximum length when the threaded portion of the head is in contact. threading of the screwing tube.

La longueur minimale de l'organe ressort est définie comme étant celle qu'il occupe lorsque la tête est complètement vissée. Au moins un élément de buté est agencé en référence à l'organe ressort pour déterminer sa longueur maximale, un organe de liaison entre la tête et le ressort est susceptible de se déplacer selon une course définie par l'élément de butée et la position minimale du ressort. La course de la tête dans son état vissé est supérieure à la course de l'organe de liaison. Comme on le comprend directement, la course de la tête dans son état vissé est la distance qu'elle parcourt entre son vissage maximal et son vissage minimal.The minimum length of the spring member is defined as that which it occupies when the head is completely screwed. At least one abutment element is arranged with reference to the spring member to determine its maximum length, a connecting member between the head and the spring is movable in a stroke defined by the abutment element and the minimum position spring. The stroke of the head in its screwed state is greater than the stroke of the connecting member. As can be understood directly, the stroke of the head in its screwed state is the distance it travels between its maximum screwing and its minimal screwing.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques apparaîtront plus clairement à la lecture de la description qui suit, faite en référence au dessin annexé, dans lequel :

  • la figure 2 est une vue en coupe d'une couronne à visser selon l'invention,
  • les figures 3 à 6 illustrent différentes positions de la couronne de la figure 2 au cours de son utilisation, et
  • la figure 7 montre un autre mode de réalisation de l'invention.
Other characteristics will appear more clearly on reading the description which follows, made with reference to the appended drawing, in which:
  • FIG. 2 is a sectional view of a screw-in crown according to the invention,
  • Figures 3 to 6 illustrate different positions of the crown of Figure 2 during its use, and
  • Figure 7 shows another embodiment of the invention.

Mode(s) de réalisation de l'inventionMode (s) of realization of the invention

On a représenté sur la figure 2, une vue en coupe d'une couronne à visser selon l'invention. A l'instar d'une couronne de l'état de la technique telle que décrite ci-dessus en référence à la figure 1, les éléments similaires reprenant les mêmes références, la couronne selon l'invention comporte un tube de vissage 10 qui présente une première portion 10a destinée à être fixée dans une boite de montre 20 et une deuxième portion 10b munie d'un filetage 11 et destinée à saillir de la boîte. Ce filetage 11 est prévu pour coopérer avec une portion filetée 13 des parois latérales intérieures d'une tête 12 qui forme la partie préhensible de la couronne. La partie intérieure de la tête comporte également un fond 15.FIG. 2 shows a sectional view of a screw-in crown according to the invention. Like a ring of the state of the art as described above with reference to FIG. 1, the similar elements having the same references, the ring according to the invention comprises a screwing tube 10 which presents a first portion 10a intended to be fixed in a watch case 20 and a second portion 10b provided with a thread 11 and intended to project from the box. This thread 11 is provided to cooperate with a threaded portion 13 of the inner side walls of a head 12 which forms the gripping portion of the crown. The inner part of the head also has a bottom 15.

La couronne comporte encore un piston 14 destiné à relier cinématiquement la tête 12 à une tige de commande du mouvement horloger logé dans la boîte 20. Cette tige de commande, non représentée au dessin, est généralement la tige de remontoir qui permet au porteur d'effectuer, à la fois, le remontage du mouvement et certaines corrections, notamment de l'heure et du quantième si le mouvement comporte cette fonction.The ring further comprises a piston 14 for kinematically connecting the head 12 to a control rod of the watch movement housed in the box 20. This control rod, not shown in the drawing, is generally the winding stem which allows the wearer to perform, at the same time, the reassembly of the movement and some corrections, in particular of the hour and the date if the movement comprises this function.

Un tube 16, solidaire de la tête 12, prend place entre le piston 14 et le tube de vissage 10 et coulisse entre ces deux éléments. A son extrémité, le tube 16 se resserre légèrement et présente un rebord 16a susceptible de coopérer avec un épaulement 14a que comporte le piston 14, de manière à permettre à l'utilisateur de tirer la tige de commande dans les différentes positions qu'elle peut occuper.A tube 16, integral with the head 12, takes place between the piston 14 and the screw tube 10 and slides between these two elements. At its end, the tube 16 tightens slightly and has a flange 16a capable of cooperating with a shoulder 14a that includes the piston 14, so as to allow the user to pull the control rod in the different positions it can to occupy.

Des joints 22 peuvent être disposés, de manière conventionnelle, entre le tube de vissage 10 et le tube 16, d'une part, et à la jonction entre le tube 16 et la tête 12, d'autre part.Seals 22 may be arranged, in a conventional manner, between the screwing tube 10 and the tube 16, on the one hand, and at the junction between the tube 16 and the head 12, on the other hand.

Une vis 24 présentant une tige 24a et une tête 24b, est insérée dans le piston 14 et dépasse à l'intérieur du tube 16. Un ressort 18 est monté sur la tige 24a qui le guide. Une virole 26 ayant la forme d'un cylindre muni d'un fond partiellement ouvert est montée sur la tige 24a, celle-ci étant ajustée dans l'ouverture du fond. Elle s'intercale entre la tête de la vis 24b et le ressort 18 et est orientée en direction de la tête 12. Plus particulièrement, la vis 24 sert d'élément de butée, la tête 24b présentant une zone d'appui contre laquelle le ressort 18 appuie la virole 26. La longueur maximale du ressort 18 est donc définie par la distance entre l'extrémité du piston 14 et la virole 26 et peut être modulée par le vissage de la vis 24. On notera que la tête de la vis est positionnée en référence au tube de vissage 10 de manière à ce que la virole puisse coopérer avec le fond de la tête 12 pour comprimer le ressort 18.A screw 24 having a rod 24a and a head 24b, is inserted into the piston 14 and protrudes inside the tube 16. A spring 18 is mounted on the rod 24a which guides it. A shell 26 having the shape of a cylinder with a partially open bottom is mounted on the rod 24a, the latter being fitted into the opening of the bottom. It is inserted between the head of the screw 24b and the spring 18 and is oriented towards the head 12. More particularly, the screw 24 serves as a stop element, the head 24b having a bearing zone against which the spring 18 supports the ferrule 26. The maximum length of the spring 18 is defined by the distance between the end of the piston 14 and the collar 26 and can be modulated by the screwing of the screw 24. Note that the head of the screw is positioned with reference to the screwing tube 10 so that the shell can cooperate with the bottom of the head 12 to compress the spring 18.

Le ressort 18 est agencé de manière à exercer une force poussant la virole 26 contre la tête 12 et tendant à éloigner cette dernière du piston 14. Le ressort 18 assure la mise en prise de la tête 12 et de la tige de commande lorsque la tête est dans son état dévissé.The spring 18 is arranged to exert a force pushing the ferrule 26 against the head 12 and tending to move the latter from the piston 14. The spring 18 ensures the engagement of the head 12 and the control rod when the head is in its unscrewed state.

Les dimensions de la virole 26 et du tube de vissage 10, d'une part, et les dimensions et le positionnement du filetage 11 et de la portion filetée 13, d'autre part, sont définies de manière à ce que la tête 12 puisse évoluer, lorsqu'elle est dévissée, entre une première et une deuxième positions, sans comprimer le ressort 18. Ceci peut être obtenu de différentes manières et en jouant sur les dimensions et le positionnement des éléments mentionnés ci-dessus. Autrement dit, lors du dévissage de la tête 12, le ressort atteint sa longueur maximale en mettant la virole 26 en butée contre la tête de vis 24b, tandis que la tête 12 est encore en prise avec le tube de vissage 10. La course de la tête dans son état vissé est donc supérieure à la course de la virole. Lors du vissage, la portion filetée 13 de la tête 12 entre au contact du filetage 11 du tube de vissage 10, prête à être vissée, tandis que le ressort 18 est encore à sa longueur maximale et n'a pas encore été comprimé.The dimensions of the shell 26 and the screwing tube 10, on the one hand, and the dimensions and the positioning of the thread 11 and the threaded portion 13, on the other hand, are defined so that the head 12 can evolve, when unscrewed, between a first and a second position, without compressing the spring 18. This can be achieved in different ways and playing on the dimensions and positioning of the elements mentioned above. In other words, when unscrewing the head 12, the spring reaches its maximum length by putting the ferrule 26 in abutment against the screw head 24b, while the head 12 is still engaged with the screwing tube 10. The race of the head in its screwed state is therefore greater than the stroke of the ferrule. During screwing, the threaded portion 13 of the head 12 comes into contact with the thread 11 of the screwing tube 10, ready to be screwed, while the spring 18 is still at its maximum length and has not yet been compressed.

Par ailleurs, lorsque la tige de commande peut occuper au moins une première et une deuxième positions actives, la course de la tête 12 pour faire passer la tige de sa deuxième à sa première position doit être inférieure à la course totale que la tête 12 peut effectuer dans l'état dévissé, c'est-à-dire qu'elle doit être inférieure à la distance maximale qui peut séparer la portion filetée 13 de la tête 12 et le filetage 11 du tube de vissage 10.On the other hand, when the control rod can occupy at least first and second active positions, the stroke of the head 12 to move the rod from its second position to its first position must be less than the total stroke that the head 12 can perform in the unscrewed state, that is to say it must be less than the maximum distance that can separate the threaded portion 13 of the head 12 and the thread 11 of the screwing tube 10.

Ces caractéristiques dimensionnelles seront mieux comprises à la lecture de la description du fonctionnement d'une telle couronne qui va maintenant être faite en référence aux figures 3 à 6.These dimensional characteristics will be better understood on reading the description of the operation of such a ring which will now be made with reference to FIGS. 3 to 6.

Sur la figure 3, la tête 12 est en position vissée. Le joint 22 est en appui sur l'extrémité du tube de vissage 10. Le fond de la tête 12 appuie sur la virole 26 qui comprime le ressort 18.In Figure 3, the head 12 is in the screwed position. The seal 22 bears on the end of the screwing tube 10. The bottom of the head 12 presses on the shell 26 which compresses the spring 18.

Sur la figure 4, on peut voir la position de la couronne lorsque la tête 12 est juste dévissée. La portion filetée 13 de la tête 12 est au contact du filetage 11 du tube de vissage 10, sans que l'un soit engagé dans l'autre. Le ressort 18 est à sa longueur maximale et presse la virole 26 contre la tête de la vis 24b. La virole 26 n'est plus au contact de la tête 12 de la couronne et on remarque un jeu j, représenté sur la figure 2, entre ces deux pièces. La couronne n'est donc pas sous l'action du ressort 18 et peut évoluer entre une première et une deuxième positions sans comprimer ce dernier. Dans cette position, l'utilisateur peut actionner la première fonction proposée par la tige de commande, typiquement, le remontage du mouvement.In Figure 4, we can see the position of the crown when the head 12 is just unscrewed. The threaded portion 13 of the head 12 is in contact with the thread 11 of the screwing tube 10, without one being engaged in the other. The spring 18 is at its maximum length and presses the ferrule 26 against the head of the screw 24b. The ferrule 26 is no longer in contact with the head 12 of the crown and there is a clearance j, shown in Figure 2, between these two parts. The crown is not under the action of the spring 18 and can move between a first and a second position without compressing the latter. In this position, the user can actuate the first function proposed by the control rod, typically the reassembly of the movement.

L'utilisateur tire la tête 12 de la couronne pour amener la tige de commande dans sa deuxième position active, par l'intermédiaire du piston 14. On est alors dans la position représentée sur la figure 5. Comme dans la position précédente, le ressort 18 est à sa longueur maximale et presse la virole 26 contre la tête de la vis 24b. La virole 26 n'est pas au contact de la tête 12 de la couronne et il existe toujours un jeu entre ces deux pièces. L'utilisateur peut alors actionner la deuxième fonction proposée par la tige de commande.The user pulls the head 12 of the crown to bring the control rod into its second active position, through the piston 14. It is then in the position shown in Figure 5. As in the previous position, the spring 18 is at its maximum length and presses the ferrule 26 against the head of the screw 24b. The ferrule 26 is not in contact with the head 12 of the crown and there is still a gap between these two parts. The user can then operate the second function proposed by the control rod.

C'est particulièrement lors de l'opération de revissage de la tête de la couronne que le dispositif décrit précédemment est avantageux. Lorsque l'utilisateur appuie sur la tête 12 pour la rapprocher de la boîte 20, elle se déplace dans un premier temps jusqu'à venir au contact de la virole 26, comblant ainsi le jeu. Dans un deuxième temps, la tête 12 comprime le ressort 18, comme le montre la figure 6, jusqu'à un certain seuil où la force atteinte est suffisante pour repousser la tige dans sa première position active. La couronne est alors sensiblement dans la position de la figure 3.It is particularly during the operation of screwing the head of the crown that the device described above is advantageous. When the user presses the head 12 to bring it closer to the box 20, it moves in a first step until it comes into contact with the shell 26, thus filling the gap. In a second step, the head 12 compresses the spring 18, as shown in Figure 6, to a certain threshold where the force reached is sufficient to push the rod into its first active position. The crown is then substantially in the position of FIG.

L'utilisateur peut alors faire pivoter la tête 12 de manière à engager la portion filetée 13 de la tête 12 sur le filetage 11 du tube de vissage 10, sans avoir à appuyer simultanément sur elle. En effet, la virole 26 n'étant pas au contact de la tête 12, le ressort 18 n'exerce aucune force à ce moment contre la tête 12. Ce n'est qu'ultérieurement, au cours du revissage de la tête 12, que celle-ci vient au contact de la virole 26 et comprime le ressort 18. L'utilisateur n'a qu'à continuer à imprimer un mouvement de rotation à la tête 12, dont l'avance engendrée par le vissage suffit pour comprimer le ressort et revenir à la position vissée. Ainsi, particulièrement dans le cas où la tête 12 de la couronne n'est pas facilement accessible, l'utilisateur peut aisément la revisser sans devoir effectuer un mouvement combiné pour vaincre la force du ressort 18. En outre, ce mode de réalisation ne nécessite de faire que très peu de modification par rapport aux couronnes existantes.The user can then rotate the head 12 so as to engage the threaded portion 13 of the head 12 on the thread 11 of the screwing tube 10, without having to simultaneously press on it. Indeed, the ferrule 26 not being in contact with the head 12, the spring 18 exerts no force at this time against the head 12. Only later, during the screwing of the head 12, that it comes into contact with the ferrule 26 and compresses the spring 18. The user has only continue to print a rotational movement to the head 12, the advance generated by the screwing is sufficient to compress the spring back and return to the screwed position. Thus, particularly in the case where the head 12 of the crown is not easily accessible, the user can easily screw it back without having to perform a combined movement to overcome the force of the spring 18. In addition, this embodiment does not require to make that very little modification compared to existing wreaths.

Dans une variante illustrée à la figure 7, sur laquelle le tube de vissage n'a pas été représenté, le piston 14 a une forme de cylindre creux muni d'un fond partiellement ouvert, de manière relativement similaire à la virole 26 ci-dessus. Une tige 28 munie d'une tête 30 est disposée à l'intérieur du tube 16 en traversant le piston 14, la tête 30 coopérant avec le fond du piston qui sert d'élément de butée. L'extrémité libre de la tige 28 disposée à l'intérieur du tube 16 reçoit une bague de retenue 32 qui lui est solidaire. Celle-ci sert d'organe de liaison entre la tête et le ressort. Elle est avantageusement amovible et peut être vissée sur la tige 28. Le ressort 18 est, tout comme dans le premier mode de réalisation, monté sur la tige 28 et s'appuie, d'un côté, contre le piston 14 et, de l'autre côté, contre la bague de retenue 32 dimensionnée de manière à former également un élément du butée. La tension du ressort peut être réglée en agissant sur la position de la bague 32.In a variant illustrated in Figure 7, on which the screw tube has not been shown, the piston 14 has a hollow cylinder shape with a partially open bottom, relatively similar to the ferrule 26 above . A rod 28 provided with a head 30 is disposed inside the tube 16 through the piston 14, the head 30 cooperating with the bottom of the piston which serves as a stop element. The free end of the rod 28 disposed inside the tube 16 receives a retaining ring 32 which is integral therewith. This serves as a connecting member between the head and the spring. It is advantageously removable and can be screwed onto the rod 28. The spring 18 is, as in the first embodiment, mounted on the rod 28 and is supported on one side against the piston 14 and, the other side, against the retaining ring 32 sized to also form an element of the abutment. The spring tension can be adjusted by acting on the position of the ring 32.

Comme pour le premier mode de réalisation, les dimensions de la bague de retenue 32, de la tige 28 et du tube de vissage 10, d'une part, et les dimensions et le positionnement du filetage 11 et de la portion filetée 13, d'autre part, sont définies de manière à ce que la tête 12 puisse évoluer, lorsqu'elle est dévissée, entre une première et une deuxième positions, sans comprimer le ressort. Autrement dit, lors du dévissage de la tête 12, le ressort 18 atteint sa longueur maximale en mettant la tête 30 de la tige 28 en butée contre le fond du piston, tandis que la tête 12 est encore en prise avec le tube de vissage 10. La course de la tête dans son état vissé est donc supérieure à la course de la bague de retenue. Lors du vissage, la portion filetée 13 de la tête 12 est au contact du filetage 11 du tube de vissage 10, prête à être vissée, tandis que le ressort 18 est encore à sa longueur maximale et n'a pas encore été comprimé.As for the first embodiment, the dimensions of the retaining ring 32, the rod 28 and the screwing tube 10, on the one hand, and the dimensions and the positioning of the thread 11 and the threaded portion 13, d on the other hand, are defined so that the head 12 can evolve, when unscrewed, between a first and a second position, without compressing the spring. In other words, during the unscrewing of the head 12, the spring 18 reaches its maximum length by putting the head 30 of the rod 28 in abutment against the bottom of the piston, while the head 12 is still engaged with the screwing tube 10 The stroke of the head in its screwed state is therefore greater than the stroke of the retaining ring. During screwing, the threaded portion 13 of the head 12 is in contact with the thread 11 of the screwing tube 10, ready to be screwed, while the spring 18 is still at its maximum length and has not yet been compressed.

Un tel dispositif est avantageux car il nécessite moins de place que celui du premier mode de réalisation. En effet, l'espace nécessaire pour le déplacement de l'élément mobile (la virole dans le premier exemple, la tige dans le deuxième exemple) permettant la compression du ressort, est ménagé dans le piston, plus particulièrement dans une partie qui est généralement creuse. Il est ainsi possible d'utiliser l'invention avec un piston court, ce qui est plus difficile avec le premier mode de réalisation, notamment pour solidariser la vis et le piston.Such a device is advantageous because it requires less space than that of the first embodiment. Indeed, the space required for the displacement of the movable element (the ferrule in the first example, the rod in the second example) allowing compression of the spring, is formed in the piston, more particularly in a part which is generally dig. It is thus possible to use the invention with a short piston, which is more difficult with the first embodiment, in particular to secure the screw and the piston.

Ainsi est proposée une couronne à visser s'adaptant particulièrement bien aux montres munies d'un dispositif cache-couronne et pour lesquelles l'utilisateur a parfois des difficultés pour manipuler la tête de la couronne, particulièrement lors du revissage. Naturellement, une telle couronne peut parfaitement s'adapter sur une montre ne comportant pas de dispositif cache-couronne. Les exemples décrits ci-dessus n'ont été proposés qu'à titre d'illustration non limitative de l'invention. L'homme du métier pourrait imaginer d'autres variantes permettant d'obtenir un jeu voulu à la tête, lorsque celle-ci est dévissée, sans sortir du cadre de la présente invention.Thus is proposed a screw-in crown adapting particularly well to watches provided with a crown cover device and for which the user sometimes has difficulties in handling the crown head, particularly during screwing. Naturally, such a crown can perfectly fit on a watch not having a crown cover device. The examples described above have been proposed by way of non-limiting illustration of the invention. The skilled person could imagine other variants to obtain a desired game to the head, when it is unscrewed, without departing from the scope of the present invention.

Claims (9)

Couronne à visser comprenant : - un tube de vissage (10) destiné à être fixé dans une boite de montre (20) et comportant un filetage (11), - une tête (12) munie d'une portion filetée (13) destinée à coopérer avec ledit filetage (11), ladite tête (12) pouvant présenter un état vissé sur ledit filetage (11)ou un état dévissé, - un piston (14) destiné à relier cinématiquement la tête (12) à une tige de commande d'un mouvement horloger, - un tube (16) solidaire de ladite tête (12), coulissant sur le piston (14) et à l'intérieur dudit tube de vissage (10), et - un organe ressort (18) disposé de manière à exercer une force tendant à éloigner ladite tête (12) dudit piston (14), caractérisée en ce qu'elle est agencée de manière à ce que ledit organe ressort (18) soit à sa longueur maximale lorsque la portion filetée (13) de la tête (12) entre au contact du filetage (11) du tube de vissage (10).Screw-in crown comprising: a screwing tube (10) intended to be fixed in a watch case (20) and comprising a thread (11), - a head (12) provided with a threaded portion (13) intended to cooperate with said thread (11), said head (12) may have a screwed state on said thread (11) or an unscrewed state, a piston (14) for kinematically connecting the head (12) to a control rod of a watch movement, a tube (16) integral with said head (12), sliding on the piston (14) and inside said screwing tube (10), and - a spring member (18) arranged to exert a force tending to move said head (12) away from said piston (14), characterized in that it is arranged in such a way that said spring member (18) is at its maximum length when the threaded portion (13) of the head (12) comes into contact with the thread (11) of the screwing tube ( 10). Couronne selon la revendication 1, dans laquelle la longueur minimale de l'organe ressort (18) est celle qu'il occupe lorsque la tête (12) est complètement vissée, caractérisée en ce qu'au moins un élément de buté est agencé en référence à l'organe ressort (18) pour déterminer sa longueur maximale, un organe de liaison (26, 32) entre la tête (12) et l'organe ressort (18) étant susceptible de se déplacer selon une course définie par l'élément de butée et la position minimale de l'organe ressort, la course de la tête (12) dans son état vissé étant supérieure à la course de l'organe de liaison (26, 32).Crown according to claim 1, wherein the minimum length of the spring member (18) is that which it occupies when the head (12) is completely screwed, characterized in that at least one stop element is arranged as a reference to the spring member (18) to determine its maximum length, a connecting member (26, 32) between the head (12) and the spring member (18) being able to move in a race defined by the element stop and the minimum position of the spring member, the stroke of the head (12) in its screwed state being greater than the travel of the connecting member (26, 32). Couronne selon la revendication 2, caractérisée en ce qu'un élément de butée est une zone d'appui disposée à l'extrémité libre d'une tige (24a) solidaire du piston (14) et disposée dans ledit tube (16).Crown according to claim 2, characterized in that an abutment element is a bearing zone disposed at the free end of a rod (24a) integral with the piston (14) and disposed in said tube (16). Couronne selon la revendication 3, caractérisée en ce que ladite tige est une vis (24) dont la tête (24b) définit ladite zone d'appui, la position de la zone d'appui étant ajustable par vissage de la vis.Crown according to claim 3, characterized in that said rod is a screw (24) whose head (24b) defines said bearing zone, the position of the bearing zone being adjustable by screwing the screw. Couronne selon l'une des revendications 3 et 4, caractérisée en ce que l'organe ressort (18) est disposé sur ladite tige.Crown according to one of claims 3 and 4, characterized in that the spring member (18) is disposed on said rod. Couronne selon l'une des revendications 4 et 5, caractérisée en ce que l'organe de liaison est une virole (26) montée coulissante sur la tige, entre l'organe ressort (18) et la zone d'appui (24b).Crown according to one of claims 4 and 5, characterized in that the connecting member is a ferrule (26) slidably mounted on the rod, between the spring member (18) and the bearing zone (24b). Couronne selon la revendication 2, dans laquelle le piston (14) est creux et est muni d'un fond ouvert, caractérisée en ce qu'un élément de butée est défini par le fond du piston et en ce que l'organe de liaison est une bague (32) disposée à une première extrémité d'une tige (28) dont la deuxième extrémité est agencée de manière à coopérer avec ledit élément de butée.Crown according to claim 2, wherein the piston (14) is hollow and is provided with an open bottom, characterized in that an abutment element is defined by the bottom of the piston and in that the connecting member is a ring (32) disposed at a first end of a rod (28) whose second end is arranged to cooperate with said stop element. Couronne selon l'une des revendications précédentes, destinée à actionner une tige de commande susceptible d'occuper au moins deux positions actives, caractérisée en ce que la course de la tête pour faire passer la tige de sa deuxième à sa première position active est inférieure à la course totale de la tête (12) dans l'état dévissé.Crown according to one of the preceding claims, intended to actuate a control rod capable of occupying at least two active positions, characterized in that the stroke of the head to move the rod from its second to its first active position is lower at the total stroke of the head (12) in the unscrewed state. Procédé d'utilisation d'une couronne à visser comprenant : - un tube de vissage (10) destiné à être fixé dans une boite de montre (20) et comportant un filetage (11), - une tête (12) munie d'une portion filetée (13) destinée à coopérer avec ledit filetage (11), ladite tête (12) pouvant présenter un état vissé sur ledit filetage (11)ou un état dévissé, - un piston (14) destiné à relier cinématiquement la tête (12) à une tige de commande d'un mouvement horloger, - un tube (16) solidaire de ladite tête (12), coulissant sur le piston (14) et à l'intérieur dudit tube de vissage (10), et - un organe ressort (18) disposé de manière à exercer une force tendant à éloigner ladite tête (12) dudit piston (14), dans lequel la portion filetée (13) de la tête (12) est amenée au contact du filetage (11) du tube de vissage (10) sans contraindre l'organe ressort (18). A method of using a screw-in crown comprising: a screwing tube (10) intended to be fixed in a watch case (20) and comprising a thread (11), - a head (12) provided with a threaded portion (13) intended to cooperate with said thread (11), said head (12) may have a screwed state on said thread (11) or an unscrewed state, a piston (14) for kinematically connecting the head (12) to a control rod of a watch movement, a tube (16) integral with said head (12), sliding on the piston (14) and inside said screwing tube (10), and - a spring member (18) arranged to exert a force tending to move said head (12) away from said piston (14), wherein the threaded portion (13) of the head (12) is brought into contact with the thread (11) of the screwing tube (10) without constraining the spring member (18).
EP07118965A 2006-10-27 2007-10-22 Screwing crown Withdrawn EP1916577A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01718/06A CH703671B1 (en) 2006-10-27 2006-10-27 Crown screw and mounting method of such crown.

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EP1916577A2 true EP1916577A2 (en) 2008-04-30
EP1916577A3 EP1916577A3 (en) 2009-08-05

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2166420A2 (en) * 2008-09-22 2010-03-24 Boninchi S.A. Geschraubte Krone mit Ventil oder integriertem Druckschalter
CN108572541A (en) * 2017-03-13 2018-09-25 精工电子有限公司 Clock and watch with button locking mechanism
CN115390418A (en) * 2021-05-19 2022-11-25 梅科股份公司 Device for controlling a timepiece movement with tactile feedback and timepiece, in particular a watch, comprising such a device
CN115847092A (en) * 2023-02-03 2023-03-28 天王电子（深圳）有限公司 Intelligent assembling machine for bottom cover of watch shell

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CH331413A (en) * 1955-06-13 1958-07-15 Piquerez Sa Ervin Waterproof timepiece

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CH608160B (en) * 1976-03-23 Boninchi Sa WATERPROOF WINDING CROWN.
JPS6042393Y2 (en) * 1980-01-24 1985-12-26 シチズン時計株式会社 Waterproof reuse device for quartz watches
DE60307126D1 (en) * 2002-10-04 2006-09-07 Ks 22 S A OPERATING DEVICE FOR WATCHES
EP1457845B1 (en) * 2003-03-13 2006-09-06 Richemont International S.A. Sealed push button

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CH204911A (en) * 1937-08-20 1939-05-31 Colomb Henri Waterproof winding watch.
CH331413A (en) * 1955-06-13 1958-07-15 Piquerez Sa Ervin Waterproof timepiece

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2166420A2 (en) * 2008-09-22 2010-03-24 Boninchi S.A. Geschraubte Krone mit Ventil oder integriertem Druckschalter
EP2166420A3 (en) * 2008-09-22 2014-04-02 Boninchi S.A. Geschraubte Krone mit Ventil oder integriertem Druckschalter
CN108572541A (en) * 2017-03-13 2018-09-25 精工电子有限公司 Clock and watch with button locking mechanism
CN108572541B (en) * 2017-03-13 2021-07-27 精工电子有限公司 Timepiece with crown lock mechanism
CN115390418A (en) * 2021-05-19 2022-11-25 梅科股份公司 Device for controlling a timepiece movement with tactile feedback and timepiece, in particular a watch, comprising such a device
CN115847092A (en) * 2023-02-03 2023-03-28 天王电子（深圳）有限公司 Intelligent assembling machine for bottom cover of watch shell
CN115847092B (en) * 2023-02-03 2023-07-28 天王电子（深圳）有限公司 Watch case bottom intelligent assembly machine

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Publication number Publication date
EP1916577A3 (en) 2009-08-05
CH703671B1 (en) 2012-03-15

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