EP2455822B1 - Procedure and device for fixing a display element - Google Patents

Procedure and device for fixing a display element Download PDF

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Publication number
EP2455822B1
EP2455822B1 EP10192203.7A EP10192203A EP2455822B1 EP 2455822 B1 EP2455822 B1 EP 2455822B1 EP 10192203 A EP10192203 A EP 10192203A EP 2455822 B1 EP2455822 B1 EP 2455822B1
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EP
European Patent Office
Prior art keywords
locking
display element
assembly
head
display
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.)
Active
Application number
EP10192203.7A
Other languages
German (de)
French (fr)
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EP2455822A1 (en
Inventor
Stefan Rombach
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP10192203.7A priority Critical patent/EP2455822B1/en
Priority to US13/298,942 priority patent/US8763252B2/en
Priority to JP2011254713A priority patent/JP5478590B2/en
Priority to CN2011103752571A priority patent/CN102566398A/en
Publication of EP2455822A1 publication Critical patent/EP2455822A1/en
Application granted granted Critical
Publication of EP2455822B1 publication Critical patent/EP2455822B1/en
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Classifications

    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/14—Fastening the dials to the clock or watch plates
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/04—Mounting of electronic components
    • G04G17/045—Mounting of the display
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y10T29/49583—Watch or clock making having indicia, face, or dial
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members

Definitions

  • the present invention relates to the field of watchmaking. It relates more specifically to a method of fixing a display element, such as a watch face. The invention also relates to a device for fixing and locking a display device for the implementation of this fixing method.
  • foot dials are known, especially for mid and high-end watches.
  • the feet which form protruding parts under the dial, are generally welded rather than machined directly integrally to the dial, and then driven into recesses under the dial.
  • An alternative is to machine holes in the dial and to drive feet in these holes.
  • An object of the present invention is to provide a device and a fixing method faster and more practical to implement.
  • An advantage of the proposed solution is to allow the locking operation immediately after the dial mounting operation without further intermediate step. The overall assembly time is thus reduced.
  • An additional advantage of the proposed solution is that it simplifies the operation of locking the dial thanks to the ease of access of the locking elements, which makes handling easier.
  • the figure 1 shows a solution usually used for locking a dial 1 'according to the prior art.
  • the foot of the dial 2 ' is engaged in a first bore 31' of a plate 3 '
  • the locking key 4' is engaged in a second bore 32 'machined on the other side of the plate 3' with respect to the dial 1 '.
  • the locking key 4 ' is formed of a rod 41' which engages in the second bore 32 'arranged inwardly of the plate 3', as well as a head 42 ', accessible from the other side of the plate 3 ', and a flange 43' coaxial with the head 42 'but which extends only over a portion of its periphery.
  • the rod 41 ' is driven into the second bore 32' and driving the head 42 'in rotation causes the flange 43' to act as a knife penetrating the thickness of the foot to lock the latter.
  • the locking key 4 'and the dial 1' being located on either side of the plate 3 ', it is necessary to always turn the plate 3' to be able to access the locking key 4 'once the dial has been mounted on the plate, which imposes an additional handling step and appropriate tooling on a production line.
  • the method and the device according to the invention more generally apply to a display element 1 provided with one or more fastening elements 2 for mounting on a support 3, as well as one or more locking elements 4 which are introduced into a locking support 5.
  • the latter locking support 5 may be distinct from the support 3; according to a preferred embodiment of the invention the support 3 may for example consist of a plate 3 'while the locking medium 5 may consist of a watch case.
  • the Figure 2A shows a top view of a fastening and locking device according to a preferred embodiment of the invention.
  • the display element for example typically a dial, comprises here LCD digital display means (Liquid Crystal Display), seen from above by their visible side 11, and a plurality of locking elements 4 partially covered by the display element 1.
  • LCD digital display means Liquid Crystal Display
  • This arrangement gives a better aesthetic to a watch using the device according to the invention, because the heads of the locking elements 42 are partially hidden; on the other hand, this arrangement also makes it possible to minimize the total width dimensions occupied relative to the support of the display element 3 on the support of the locking element 5, these two supports being able to be formed by one and the same room. In this way, the size of the locking elements 4 at the periphery of the display element 1 is reduced and makes it easier to accommodate other parts for a given surface.
  • the Figure 2B shows a sectional view of the fastening and locking device of the Figure 2A in locked position along the AA axis. It distinguishes the display element 1, as well as the visible side 11 of the display element 1 on the top, the assembly elements of the display means 2 which fit into a bore 31 of the support of the display element 3, as well as the rod of the locking element 41 and the head of the locking element 42, with a truncated flange 43.
  • the truncation surface 44 allows the locking element 4 to easily be inserted into a cavity, formed here by the gap between a battery enclosure 6 intended to receive a battery, and the peripheral wall of the display member 32.
  • This truncation surface 44 indeed determines a positioning of the locking element 4 facing the connecting element 2, which allows its displacement in the direction of the mounting D up to the bore 51 of its support 5.
  • the locking element 4 can then be rotated about a quarter of a turn to enter the locked position, which corresponds to that illustrated in FIG. Figure 2B .
  • the fixing and locking device is accessible in the direction of the mounting D; it is however possible to envisage access in a substantially different direction, making an angle preferably less than 45 degrees with respect to this direction of the mounting D, so that the locking element 4 is always easily accessible and manipulable without must move the workpiece after assembly to perform the lock operation.
  • the locking element 4 preferably comprises a rod 41 engaged in a bore 51 formed in its support 5 at the periphery of the display element 1 on the visible side 11 of the display element; it also comprises a head 42 which can be rotated by an external tool engaging in a notch 21 extending preferably along a diameter of the head, such as a screw head.
  • Such an arrangement of the notches on the external side of the Display element 1 is necessary when the display element 1 is for example a dial, which leaves no other alternative for fixing from its visible side than by its periphery.
  • the arrangement of the various locking pieces according to the invention makes it easy to perform the locking operation by rotation of the head 42, preferably at an angle less than 180 degrees corresponding to a half-turn, and preferably around 90 degrees, a quarter of a turn, so that the operation is very fast and easy to perform.
  • This rotation of the head 42 positions the non-truncated portion of the collar in the notch 21 of the connecting element 4 and can be made directly after the assembly means 1 have been fixed on their support 3, because the head 42 is accessible in the direction of assembly (D) from the visible side 11 of the display element 1, so that it is no longer necessary to return the support to access the elements of lock 2 by the other side.
  • This arrangement therefore certainly facilitates locking operations, but is not natural to the skilled person because of the additional size of the locking pieces 4 on the periphery of the display element 1, which had pushed until now to position the locking elements 4 towards the inside of the mounting elements 2 opposite side.
  • This solution of the prior art also had the advantage of being able to easily hide the locking pieces 4 on the other side of the display element 1.
  • the material which constitutes it may be harder than that of the connecting element 2 may also be selected, so that the penetration into the element notch 21 is facilitated. It is also conceivable that no notch is formed in the joining element before the locking operation, and that only the rotation of the head 42 of the locking element creates this notch 21 due to the relative difference hardness between the two chosen materials. Reducing the hardness of the connecting element 2 to this effect makes it possible, moreover, to facilitate the preliminary driving operation of these elements in their support 3.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Connection Of Plates (AREA)
  • Electromechanical Clocks (AREA)

Description

La présente invention se rapporte au domaine de l'horlogerie. Elle concerne plus précisément un procédé de fixation d'un élément d'affichage, tel un cadran de montre. L'invention concerne également un dispositif de fixation et de verrouillage d'un dispositif d'affichage pour la mise en oeuvre de ce procédé de fixation.The present invention relates to the field of watchmaking. It relates more specifically to a method of fixing a display element, such as a watch face. The invention also relates to a device for fixing and locking a display device for the implementation of this fixing method.

Pour le montage des cadrans sur des platines ou mouvements de montre, on connaît des cadrans à pied, notamment pour les montres de milieu et haut de gamme. Les pieds, qui forment des parties protubérantes sous le cadran, sont en général soudées plutôt qu'usinées directement intégralement au cadran, et ensuite chassés dans des évidements sous le cadran. Une variante consiste à usiner des trous dans le cadran et de chasser des pieds dans ces orifices.For mounting dials on turntables or watch movements, foot dials are known, especially for mid and high-end watches. The feet, which form protruding parts under the dial, are generally welded rather than machined directly integrally to the dial, and then driven into recesses under the dial. An alternative is to machine holes in the dial and to drive feet in these holes.

Alternativement au chassage, ou de façon complémentaire afin de verrouiller la position des pieds du cadran, il existe d'autres méthodes et dispositifs de fixation connus utilisant des clefs ou des vis. Toutefois dans ce cas l'accès aux vis et aux clefs est relativement peu pratique car il s'effectue soit par le côté, soit par la face arrière du cadran, et ce notamment afin de préserver l'esthétique de la montre en cachant les pièces de verrouillage. Dans ce dernier cas, comme pour la solution divulguée par exemple dans le brevet FR2324036 de la demanderesse, il est nécessaire de retourner le cadran une fois que de dernier a été assemblé à la platine afin d'accéder aux pièces de verrouillage, ce qui nécessite une étape de manipulation supplémentaire lors du processus d'assemblage.As an alternative to driving, or in a complementary manner to lock the position of the dial feet, there are other known methods and fastening devices using keys or screws. However in this case access to screws and keys is relatively impractical because it is performed either by the side or by the back of the dial, and in particular to preserve the aesthetics of the watch by hiding parts locking. In the latter case, as for the solution disclosed for example in the patent FR2324036 of the plaintiff, it is necessary to return the dial once the latter has been assembled to the plate in order to access the locking pieces, which requires an extra handling step during the assembly process.

On connaît par ailleurs du document CH185463 un dispositif pour l'assemblage de diverses parties de montres, à l'aide de clefs comportant des tourillons et des collets hélicoïdaux qui pénètrent dans des encoches et en provoquent ainsi un coincement contre une partie supérieure pour l'assemblage notamment d'une platine à un fond solidaire d'un cadre recevant une lunette, et d'un cadran à une platine. Le dispositif de verrouillage du cadran est un mode de verrouillage usuel d'un cadran à pieds à l'aide de clefs dont les têtes sont accessibles depuis le côté opposé du cadran. Le document DE 27 56 358 décrit une montre électronique avec un affichage digital qui est maintenu par un système de fixation localisé sur le côté visible de l'élément d'affichage. Il existe donc un besoin pour des solutions exemptes des limitations de cet art antérieur connu pour le verrouillage d'éléments d'affichage.It is also known from the document CH185463 a device for assembling various parts of watches, with the aid of keys comprising trunnions and helical collars which penetrate into notches and thus cause them to jam against an upper part for assembling in particular a plate to a solid base of a frame receiving a bezel, and a dial to a platinum. The locking device of the dial is a conventional locking mode of a dial with feet using keys whose heads are accessible from the opposite side of the dial. The document DE 27 56 358 discloses an electronic watch with a digital display which is held by a fastening system located on the visible side of the display element. There is therefore a need for solutions free from the limitations of this known prior art for locking display elements.

Un but de la présente invention est de proposer un dispositif et une méthode de fixation plus rapide et plus pratique à mettre en oeuvre.An object of the present invention is to provide a device and a fixing method faster and more practical to implement.

Ces buts sont également atteints grâce à un dispositif de fixation et de verrouillage d'un élément d'affichage selon la revendication 1.These objects are also achieved by a device for fixing and locking a display element according to claim 1.

Ces buts sont également atteints grâce à une méthode de fixation d'un élément d'affichage selon la revendication 4.These objects are also achieved by a method of fixing a display element according to claim 4.

Un avantage de la solution proposée est de permettre l'opération de verrouillage immédiatement après l'opération de montage du cadran sans autre étape intermédiaire. Le temps global d'assemblage s'en trouve ainsi réduit.An advantage of the proposed solution is to allow the locking operation immediately after the dial mounting operation without further intermediate step. The overall assembly time is thus reduced.

Un avantage additionnel de la solution proposée est qu'elle permet de simplifier l'opération de verrouillage du cadran grâce à la facilité d'accès des éléments de verrouillage, qui en rend la manipulation plus aisée.An additional advantage of the proposed solution is that it simplifies the operation of locking the dial thanks to the ease of access of the locking elements, which makes handling easier.

Ainsi les rendements de production sont fortement améliorés, notamment pour une production automatique à la chaîne.

  • les figures 2A et 2B montrent respectivement une vue de dessus et en coupe du cadran assemblé sur une platine selon un mode réalisation préférentiel de l'invention.
Thus the production yields are greatly improved, especially for an automatic production line.
  • the Figures 2A and 2B respectively show a view from above and in section of the dial assembled on a plate according to a preferred embodiment of the invention.

La figure 1 montre une solution utilisée usuellement pour le verrouillage d'un cadran 1' selon l'art antérieur. Le pied du cadran 2' est engagé dans une première forure 31' d'une platine 3', et la clef de verrouillage 4' est engagée dans une deuxième forure 32' usinée de l'autre côté de la platine 3' par rapport au cadran 1'. La clef de verrouillage 4' est formée d'une tige 41' qui s'engage dans la deuxième forure 32' agencée vers l'intérieur de la platine 3', ainsi que d'une tête 42', accessible depuis l'autre côté de la platine 3', et d'une collerette 43' coaxiale à la tête 42' mais qui ne s'étend que sur une partie de son pourtour. La tige 41' est chassée dans la deuxième forure 32' et l'entraînement de la tête 42' en rotation amène la collerette 43' à agir comme un couteau pénétrant dans l'épaisseur du pied pour verrouiller ce dernier. Toutefois, la clef de verrouillage 4' et le cadran 1' étant situés de part et d'autre de la platine 3', il est nécessaire de toujours retourner la platine 3' pour pouvoir accéder à la clef de verrouillage 4' une fois que le cadran a été monté sur la platine, ce qui impose une étape de manipulation supplémentaire et un outillage approprié sur une ligne de production.The figure 1 shows a solution usually used for locking a dial 1 'according to the prior art. The foot of the dial 2 'is engaged in a first bore 31' of a plate 3 ', and the locking key 4' is engaged in a second bore 32 'machined on the other side of the plate 3' with respect to the dial 1 '. The locking key 4 'is formed of a rod 41' which engages in the second bore 32 'arranged inwardly of the plate 3', as well as a head 42 ', accessible from the other side of the plate 3 ', and a flange 43' coaxial with the head 42 'but which extends only over a portion of its periphery. The rod 41 'is driven into the second bore 32' and driving the head 42 'in rotation causes the flange 43' to act as a knife penetrating the thickness of the foot to lock the latter. However, the locking key 4 'and the dial 1' being located on either side of the plate 3 ', it is necessary to always turn the plate 3' to be able to access the locking key 4 'once the dial has been mounted on the plate, which imposes an additional handling step and appropriate tooling on a production line.

La méthode et le dispositif selon l'invention s'appliquent plus généralement à un élément d'affichage 1 muni d'un ou plusieurs éléments de fixation 2 pour montage sur un support 3, ainsi que d'un ou plusieurs éléments de verrouillage 4 qui sont introduits dans un support de verrouillage 5. Ce dernier support de verrouillage 5 peut être distinct du support 3; selon une variante préférentielle de l'invention le support 3 peut par exemple consister en une platine 3' tandis que le support de verrouillage 5 peut consister en un boîtier de montre.The method and the device according to the invention more generally apply to a display element 1 provided with one or more fastening elements 2 for mounting on a support 3, as well as one or more locking elements 4 which are introduced into a locking support 5. The latter locking support 5 may be distinct from the support 3; according to a preferred embodiment of the invention the support 3 may for example consist of a plate 3 'while the locking medium 5 may consist of a watch case.

La figure 2A montre une vue de dessus d'un dispositif de fixation et de verrouillage selon une variante préférentielle de l'invention. L'élément d'affichage 1, comme par exemple typiquement un cadran, comprend ici des moyens d'affichage numériques de type LCD (Liquid Crystal Display, i.e. affichage à cristaux liquides), vu de dessus par leur côté visible 11, ainsi qu'une pluralité d'éléments de verrouillage 4 partiellement recouverts par l'élément d'affichage 1. Cet agencement confère une meilleure esthétique à une montre utilisant le dispositif selon l'invention, car les têtes des éléments de verrouillage 42 sont partiellement cachées; d'autre part cet agencement permet également de minimiser les dimensions en largeur totales occupées par rapport au support de l'élément d'affichage 3 sur le support de l'élément de verrouillage 5, ces deux supports pouvant être formés par une seule et même pièce. De cette façon, l'encombrement des éléments de verrouillage 4 en périphérie de l'élément d'affichage 1 est réduit et permet de loger plus facilement d'autres pièces pour une surface donnée.The Figure 2A shows a top view of a fastening and locking device according to a preferred embodiment of the invention. The display element 1, for example typically a dial, comprises here LCD digital display means (Liquid Crystal Display), seen from above by their visible side 11, and a plurality of locking elements 4 partially covered by the display element 1. This arrangement gives a better aesthetic to a watch using the device according to the invention, because the heads of the locking elements 42 are partially hidden; on the other hand, this arrangement also makes it possible to minimize the total width dimensions occupied relative to the support of the display element 3 on the support of the locking element 5, these two supports being able to be formed by one and the same room. In this way, the size of the locking elements 4 at the periphery of the display element 1 is reduced and makes it easier to accommodate other parts for a given surface.

La figure 2B montre une vue en coupe du dispositif de fixation et de verrouillage de la figure 2A en position verrouillée selon l'axe A-A. On y distingue l'élément d'affichage 1, ainsi que le côté visible 11 de l'élément d'affichage 1 sur le dessus, les éléments d'assemblage des moyens d'affichage 2 qui s'insèrent dans une forure 31 du support de l'élément d'affichage 3, ainsi que la tige de l'élément de verrouillage 41 et la tête de l'élément de verrouillage 42, avec une collerette 43 tronquée. Selon le mode de réalisation préférentiel illustré, la surface de troncature 44 permet à l'élément de verrouillage 4 de pouvoir aisément être inséré dans une cavité, formée ici par l'interstice entre une enceinte de pile 6 destinée à recevoir une batterie, et la paroi latérale périphérique de l'élément d'affichage 32. Cette surface de troncature 44 détermine en effet un positionnement de l'élément de verrouillage 4 en regard de l'élément d'assemblage 2, qui permet son déplacement dans la direction du montage D jusqu'à la forure 51 de son support 5. L'élément de verrouillage 4 peut ensuite être tourné d'environ un quart de tour pour passer en position verrouillée, qui correspond à celle illustrée sur la figure 2B.The Figure 2B shows a sectional view of the fastening and locking device of the Figure 2A in locked position along the AA axis. It distinguishes the display element 1, as well as the visible side 11 of the display element 1 on the top, the assembly elements of the display means 2 which fit into a bore 31 of the support of the display element 3, as well as the rod of the locking element 41 and the head of the locking element 42, with a truncated flange 43. According to the preferred embodiment illustrated, the truncation surface 44 allows the locking element 4 to easily be inserted into a cavity, formed here by the gap between a battery enclosure 6 intended to receive a battery, and the peripheral wall of the display member 32. This truncation surface 44 indeed determines a positioning of the locking element 4 facing the connecting element 2, which allows its displacement in the direction of the mounting D up to the bore 51 of its support 5. The locking element 4 can then be rotated about a quarter of a turn to enter the locked position, which corresponds to that illustrated in FIG. Figure 2B .

Selon la variante préférentielle illustrée, on peut constater que le dispositif de fixation et de verrouillage est accessible selon la direction du montage D; il est toutefois possible d'envisager un accès selon une direction sensiblement différente, faisant un angle de préférence inférieur à 45 degrés par rapport à cette direction du montage D, de telle sorte que l'élément de verrouillage 4 soit toujours facilement accessible et manipulable sans devoir bouger la pièce après le montage pour effectuer l'opération de verrouillage. L'élément de verrouillage 4 comprend de préférence une tige 41 engagée dans une forure 51 aménagée dans son support 5 à la périphérie de l'élément d'affichage 1 du côté visible 11 de l'élément d'affichage; il comprend également une tête 42 pouvant être actionnée en rotation par un outil externe s'engageant dans une entaille 21 s'étendant de préférence le long d'un diamètre de la tête, comme une tête de vis. Une collerette tronquée 43 concentrique à la tête 41 s'engage dans une entaille 21 de l'élément d'assemblage 2, située vers l'extérieur de l'élément d'affichage 1. Une telle disposition des entailles du côté externe de l'élément d'affichage 1 est nécessaire lorsque l'élément d'affichage 1 est par exemple un cadran, qui ne laisse aucune autre alternative pour la fixation depuis son côté visible que par sa périphérie. Selon un mode de réalisation alternatif, pour une pièce par exemple trouée, il serait toutefois possible d'envisager un verrouillage par des pièces de verrouillage 4 insérées par cet orifice; dans ce cas les entailles 21 seraient alors situées vers l'intérieur de l'élément d'affichage 1.According to the preferred variant illustrated, it can be seen that the fixing and locking device is accessible in the direction of the mounting D; it is however possible to envisage access in a substantially different direction, making an angle preferably less than 45 degrees with respect to this direction of the mounting D, so that the locking element 4 is always easily accessible and manipulable without must move the workpiece after assembly to perform the lock operation. The locking element 4 preferably comprises a rod 41 engaged in a bore 51 formed in its support 5 at the periphery of the display element 1 on the visible side 11 of the display element; it also comprises a head 42 which can be rotated by an external tool engaging in a notch 21 extending preferably along a diameter of the head, such as a screw head. A truncated flange 43 concentric to the head 41 engages in a notch 21 of the connecting element 2, situated towards the outside of the display element 1. Such an arrangement of the notches on the external side of the Display element 1 is necessary when the display element 1 is for example a dial, which leaves no other alternative for fixing from its visible side than by its periphery. According to an alternative embodiment, for a part for example perforated, it would however be possible to consider locking by locking pieces 4 inserted through this hole; in this case the notches 21 would then be located towards the inside of the display element 1.

L'agencement des différentes pièces de verrouillage selon l'invention permet de réaliser facilement l'opération de verrouillage par rotation de la tête 42, de préférence d'un angle inférieur à 180 degrés correspondant à un demi-tour, et de préférence aux alentours de 90 degrés, soit un quart de tour, de telle sorte que l'opération est très rapide et facile à effectuer. Cette rotation de la tête 42 positionne la partie non tronquée de la collerette dans l'entaille 21 de l'élément d'assemblage 4 et peut être réalisée directement après que les moyens d'assemblage 1 ont été fixés sur leur support 3, car la tête 42 est accessible selon la direction du montage (D) depuis le côté visible 11 de l'élément d'affichage 1, de telle sorte qu'il n'est plus nécessaire de retourner le support pour accéder aux éléments de verrouillage 2 par l'autre côté. Cette disposition facilite donc certes les opérations de verrouillage, mais n'est pas naturelle pour l'homme du métier en raison de l'encombrement additionnel des pièces de verrouillage 4 en périphérie de l'élément d'affichage 1, qui avait poussé jusqu'à présent à positionner les éléments de verrouillage 4 vers l'intérieur des éléments de montage 2 côté opposé. Cette solution de l'art antérieur présentait par ailleurs l'avantage de pouvoir aisément dissimuler les pièces de verrouillage 4 de l'autre côté de l'élément d'affichage 1.The arrangement of the various locking pieces according to the invention makes it easy to perform the locking operation by rotation of the head 42, preferably at an angle less than 180 degrees corresponding to a half-turn, and preferably around 90 degrees, a quarter of a turn, so that the operation is very fast and easy to perform. This rotation of the head 42 positions the non-truncated portion of the collar in the notch 21 of the connecting element 4 and can be made directly after the assembly means 1 have been fixed on their support 3, because the head 42 is accessible in the direction of assembly (D) from the visible side 11 of the display element 1, so that it is no longer necessary to return the support to access the elements of lock 2 by the other side. This arrangement therefore certainly facilitates locking operations, but is not natural to the skilled person because of the additional size of the locking pieces 4 on the periphery of the display element 1, which had pushed until now to position the locking elements 4 towards the inside of the mounting elements 2 opposite side. This solution of the prior art also had the advantage of being able to easily hide the locking pieces 4 on the other side of the display element 1.

Afin de faciliter l'insertion de la collerette 43 dans l'élément d'assemblage 2, on pourra par ailleurs choisir le matériau qui la constitue plus dur que celui de l'élément d'assemblage 2, de telle sorte que la pénétration dans l'entaille 21 soit facilitée. On peut également concevoir qu'aucune entaille n'est formée dans l'élément d'assemblage avant l'opération de verrouillage, et que seule la rotation de la tête 42 de l'élément de verrouillage crée cette entaille 21 grâce à la différence relative de dureté entre les deux matériaux choisis. Le fait de diminuer à cet effet la dureté de l'élément d'assemblage 2 permet du reste de faciliter l'opération de chassage préliminaire de ces éléments dans leur support 3.In order to facilitate the insertion of the flange 43 into the connecting element 2, the material which constitutes it may be harder than that of the connecting element 2 may also be selected, so that the penetration into the element notch 21 is facilitated. It is also conceivable that no notch is formed in the joining element before the locking operation, and that only the rotation of the head 42 of the locking element creates this notch 21 due to the relative difference hardness between the two chosen materials. Reducing the hardness of the connecting element 2 to this effect makes it possible, moreover, to facilitate the preliminary driving operation of these elements in their support 3.

L'homme du métier comprendra que d'autres variantes peuvent être envisagées sans sortir du cadre de l'invention; on peut envisager en particulier différentes formes géométriques pour les éléments de verrouillage 4 et d'assemblage 2, ainsi que pour les éléments de type « mâle » et « femelle » agencés sur ces éléments pour un enfichage mutuel. Ces éléments sont formés par la collerette 43 et l'entaille 21 selon le mode de réalisation préférentiel décrit plus haut; il serait toutefois possible de disposer un ou plusieurs éléments de type femelle sur l'élément de verrouillage 4 et l'élément d'assemblage 2. LISTE DES REFERENCES 1 Element d'affichage 11 Côté visible des moyens d'affichage 1' Cadran 2 Elément d'assemblage des moyens d'affichage 21 Entaille de l'élément d'assemblage 2' Pieds de cadran 3 Support de l'élément d'affichage 31 Forure dans le support de l'élément d'affichage 32 Paroi latérale périphérique de l'élément d'affichage 3' Platine 31' Premières forures de la platine 32' Deuxièmes forures de la platine 4 Elément de verrouillage 41 Tige de l'élément de verrouillage 42 Tête de l'élément de verrouillage 43 Collerette de l'élément de verrouillage 44 Surface de troncature de l'élément de verrouillage 4' Clef de verrouillage 41' Tige de la clef de verrouillage 42' Tête de l'élément de verrouillage 43' Collerette de la clef de verrouillage 5 Support de l'élément de verrouillage 51 Forure dans le support de l'élément de verrouillage 6 Enceinte de pile D Direction du montage A-A Direction de coupe de la figure 2B Those skilled in the art will understand that other variants may be envisaged without departing from the scope of the invention; in particular, different geometrical shapes can be envisaged for the locking elements 4 and assembly 2, as well as for the "male" and "female" elements arranged on these elements for mutual insertion. These elements are formed by the flange 43 and the notch 21 according to the preferred embodiment described above; it would however be possible to have one or more female-type elements on the locking element 4 and the assembly element 2. <u> REFERENCE LIST </ u> 1 Display element 11 Visible side of the display means 1 ' Dial 2 Assembly element of the display means 21 Notch of the assembly element 2 ' Dial feet 3 Display element support 31 Drill in the display element holder 32 Peripheral sidewall of the display element 3 ' Platinum 31 ' First stages of platinum 32 ' Second bores of platinum 4 Locking element 41 Stem of the locking element 42 Head of the locking element 43 Collarette of the locking element 44 Truncation surface of the locking element 4 ' Locking key 41 ' Stem of the locking key 42 ' Head of the locking element 43 ' Collarette of the locking key 5 Support of the locking element 51 Drill in the support of the locking element 6 Battery speaker D Direction of assembly AA Cutting direction of the Figure 2B

Claims (4)

  1. Device for securing and locking a display element (1) mounted on a first support (3) using at least one assembly element (2) in a direction of assembly (D), said device including at least one element (4) for locking said assembly element (2), said locking element (4) being accessible from the visible side (11) of said display element (1), said securing and locking device including a second support (5) for said locking element (4), at least one bore (51) being arranged in said second support (5) at the periphery of said display element (1), on the visible side (11) of said display element (1), said locking element (4) including a shaft (41) engaged in said bore (51), and a head (42), characterized in that said locking element (4) further includes a truncated collar (43), concentric to said head (42), but only extending over part of the periphery thereof, said collar (43) being engaged in a notch (21) of said assembly element (2) located towards the exterior of said display element.
  2. Device according to claim 1, wherein the material selected for said collar (43) is harder than that of said assembly element (2).
  3. Securing and locking device according to any of the preceding claims, characterized in that said locking element (4) is partially covered by said display element (1).
  4. Method of securing and locking a display element (1), including:
    - a step of assembling said display element (1) on a support (3) using at least one assembly element (2) in a direction of assembly (D),
    - a step of locking said assembly element (2) using a locking element (4),
    said locking step being performed immediately after said assembly step (A), said locking step being achieved by rotating a head (42) of said locking element (4), said locking element (4) being accessible in the direction of assembly (D) from the visible side (11) of said display element (1), characterized in that said locking element (4) includes a truncated collar (43), concentric to said head (42) but only extending over part of the periphery thereof, engaging in a notch (21) of said assembly element (2), located towards the exterior of said display element during said rotation of said head (42) of said locking element.
EP10192203.7A 2010-11-23 2010-11-23 Procedure and device for fixing a display element Active EP2455822B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10192203.7A EP2455822B1 (en) 2010-11-23 2010-11-23 Procedure and device for fixing a display element
US13/298,942 US8763252B2 (en) 2010-11-23 2011-11-17 Method and device for securing a display element
JP2011254713A JP5478590B2 (en) 2010-11-23 2011-11-22 Method and apparatus for fixing display elements
CN2011103752571A CN102566398A (en) 2010-11-23 2011-11-23 Procedure and device for fixing a display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10192203.7A EP2455822B1 (en) 2010-11-23 2010-11-23 Procedure and device for fixing a display element

Publications (2)

Publication Number Publication Date
EP2455822A1 EP2455822A1 (en) 2012-05-23
EP2455822B1 true EP2455822B1 (en) 2017-11-15

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EP10192203.7A Active EP2455822B1 (en) 2010-11-23 2010-11-23 Procedure and device for fixing a display element

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US (1) US8763252B2 (en)
EP (1) EP2455822B1 (en)
JP (1) JP5478590B2 (en)
CN (1) CN102566398A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3832396B1 (en) * 2019-12-03 2024-01-24 ETA SA Manufacture Horlogère Suisse Device for attaching a timepiece display or trim element

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JPS5454677A (en) * 1977-10-08 1979-05-01 Citizen Watch Co Ltd Liquid crystal display watch

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CH502628A (en) * 1967-12-19 1970-08-31 Ebauchesfabrik Eta Ag Device for locking dial feet inserted into clockwork bores
US3523417A (en) * 1968-06-29 1970-08-11 Seiko Instr & Electronics Dial pin for a watch
CH540512A (en) * 1970-11-26 1973-03-15 Schild Sa A Device for fixing a dial to a clockwork movement
CH610705B (en) 1975-09-12 Ebauchesfabrik Eta Ag DEVICE FOR ATTACHING A DIAL TO A WORK PLATE OF A WATCH.
CH641371A5 (en) * 1979-05-28 1984-02-29 Zhdanovskij Metall Inst Filter
JPS5686380A (en) * 1979-12-17 1981-07-14 Seiko Epson Corp Structure of scale plate of scaled watch
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DE69403612T2 (en) * 1993-11-23 1998-01-08 Ebauchesfabrik Eta Ag Clock with a device for fastening a removable element to a carrier and method for fastening this element to this carrier
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DE2756358A1 (en) * 1976-12-21 1978-06-29 Seiko Instr & Electronics ELECTRONIC WATCH WITH DIGITAL DISPLAY
JPS5454677A (en) * 1977-10-08 1979-05-01 Citizen Watch Co Ltd Liquid crystal display watch

Also Published As

Publication number Publication date
JP5478590B2 (en) 2014-04-23
US20120124814A1 (en) 2012-05-24
EP2455822A1 (en) 2012-05-23
JP2012112957A (en) 2012-06-14
CN102566398A (en) 2012-07-11
US8763252B2 (en) 2014-07-01

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