EP3640745A1 - Indicator hand for a timepiece - Google Patents

Indicator hand for a timepiece Download PDF

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Publication number
EP3640745A1
EP3640745A1 EP18201140.3A EP18201140A EP3640745A1 EP 3640745 A1 EP3640745 A1 EP 3640745A1 EP 18201140 A EP18201140 A EP 18201140A EP 3640745 A1 EP3640745 A1 EP 3640745A1
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EP
European Patent Office
Prior art keywords
section
needle
indicating needle
timepiece
opaque
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18201140.3A
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German (de)
French (fr)
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EP3640745B1 (en
Inventor
Stéphane OES
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP22203199.9A priority Critical patent/EP4145229A1/en
Priority to EP18201140.3A priority patent/EP3640745B1/en
Priority to EP19790083.0A priority patent/EP3867706A1/en
Priority to EP19790085.5A priority patent/EP3867707B1/en
Priority to PCT/IB2019/058857 priority patent/WO2020079633A1/en
Priority to PCT/IB2019/058860 priority patent/WO2020079636A1/en
Publication of EP3640745A1 publication Critical patent/EP3640745A1/en
Application granted granted Critical
Publication of EP3640745B1 publication Critical patent/EP3640745B1/en
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Anticipated expiration legal-status Critical

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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
    • G04B19/04—Hands; Discs with a single mark or the like
    • G04B19/042—Construction and manufacture of the hands; arrangements for increasing reading accuracy

Definitions

  • the present invention relates to an indicator hand for a timepiece and a timepiece provided with such a needle.
  • the hour and minute hands turn above a dial with indications.
  • the dial includes areas dedicated to the display of auxiliary information such as the date, the month, the day of the week, the moon phases, the hours and minutes of chronograph, etc.
  • the dial can thus include one or more apertures through each of which is visible an indication carried by a disc rotating under the dial.
  • the dial can also bear indications with which small hands cooperate located at a height lower than that of the hour and minute hands.
  • the present invention aims to solve, at least in part, this problem and proposes for this purpose an indicator needle according to claim 1, particular embodiments being defined in the dependent claims.
  • the Figures 1 to 3 on the one hand and 4 to 6 on the other hand show two examples of indicator needle for a timepiece, in particular for a wristwatch, pocket watch or pendulum clock, according to the invention.
  • the needle 1a illustrated in Figures 1 to 3 is for example an hour or minute indicator hand or a chronograph hand.
  • the needle 1b illustrated in figures 4 to 6 is for example a pointer indicating the number of the week in the year (weekly).
  • Each of these needles 1a, 1b comprises a fixing part 10a, 10b pierced with a hole 11a, 11b allowing the mounting of the needle by driving, gluing, brazing or the like on an axis. From the fixing part 10a, 10b extends radially a body 12a, 12b.
  • the body 12a, 12b consists of a first section 13a, 13b and a distal end section 14a, 14b, the latter constituting the indicator portion of the needle intended to cooperate with numbers and / or index of a graduation.
  • the body 12a of the needle 1a has a tapered shape from one end to the other and its distal end section 14a is therefore the thinnest part of the body 12a.
  • the body 12b of the needle 1b has a T shape with a first straight section 13b ending in the distal end section 14b having the shape of an arc of a circle transverse to the first section 13b.
  • the needle 1a further comprises a counterweight 15a extending from the fixing part 10a in the opposite direction to the body 12a.
  • the first section 13a, 13b is made entirely of a transparent material, preferably glass, especially tempered glass, or sapphire.
  • this first section 13a, 13b carries an anti-reflective coating 16a, 16b at least on its upper surface 17a, 17b and / or on its lower surface 18a, 18b, and preferably over its entire surface, the upper surface 17a, 17b being the surface seen by the user when he looks at the dial of the timepiece from above (or from the front).
  • the anti-reflective coating 16a, 16b can be of the same type as those used for watch glass. Thanks to its transparent material and to the anti-reflective coating 16a, 16b, the first section 13a, 13b is almost invisible to the user and therefore does not hide the information carried by the dial.
  • the needle can therefore move over the information areas of the dial, such as a window 2 ( figure 7 ) or zone 3 dedicated to a chronograph counter ( figure 8 ) and cooperating with a small needle (not shown).
  • a window 2 figure 7
  • zone 3 dedicated to a chronograph counter
  • a small needle not shown.
  • the hand according to the invention designated by 4
  • points to a graduation 6 associated therewith to display information of a different nature from that of zones 2 and 3.
  • the transparency of the needle 4 can also be useful to avoid hiding other (large) needles pivoting in the center of the dial 5.
  • At least the surface or surfaces of the first section 13a, 13b which carry the anti-reflective coating 16a, 16b are polished. More preferably, the entire surface of the first section 13a, 13b is polished before the application of the anti-reflective coating 16a, 16b.
  • its distal end section 14a, 14b is opaque or less transparent than the first section 13a, 13b, at least when the needle 1a, 1b, 4 and the dial 5 are seen from above (or from the front), so as to be visible to the user.
  • the needle 1a, 1b is in one piece, made of glass or sapphire, and carries the anti-reflective coating 16a, 16b over its entire surface, and its distal end section 14a, 14b is further surface treated to be opaque or less transparent than the first section 13a, 13b.
  • the surface treatment of the distal end section 14a, 14b may consist in depositing on the latter an opaque layer 19a, 19b, for example a layer of paint or a metallic layer. This opaque layer 19a, 19b can be deposited only on the upper surface and / or on the lower surface, or on the entire surface of the distal end section 14a, 14b.
  • This opaque layer 19a, 19b can be deposited in different ways, for example by physical vapor deposition (PVD) or chemical vapor deposition (CVD) in the case of a metallic coating.
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • the surface treatment of the distal end section 14a, 14b may consist of a frosting or a laser texturing of all or part of the surface of the section 14a, 14b.
  • an intermediate piece for example made of brass, can be brazed or fixed elastically in hole 11a, 11b and then driven out on the axis.
  • the transparent material chosen in the present invention is a low density material which gives the needle 1a, 1b a low inertia.
  • the needle 1a, 1b in particular when it is made of sapphire, can be obtained by an etching technique.
  • the preferred manufacturing method in the present invention in particular when the needle 1a, 1b is made of glass, is 3D printing, more particularly the technique known under the name FEMTOPRINT (registered trademark) which makes it possible to obtain shapes. complex and hollowed out to lighten the part and thus further reduce its inertia.
  • the needle 1a illustrated in Figures 1 to 3 has its upper surface which is chamfered, giving the upper surface of the body 12a, in particular the upper surface 17a of the first section 13a, a faceted shape (cf. figure 3 ) which lightens the needle and improves its aesthetics.
  • the body 12a is further lightened by a groove 20a formed in its lower surface.
  • the first section 13b of the body 12b of the needle 1b illustrated in figures 4 to 6 is a half-cylinder (cf. figure 6 ).
  • the upper surface 17b of this first section 13b is thus curved, without any edge. This shape also lightens the needle and improves its aesthetics.
  • the needle 1a can be hollowed out in different ways than that illustrated in the figures 2 and 3 .
  • the recess could be carried out essentially inside the needle with no outlet, or almost, towards the outside, as the FEMTOPRINT process allows.
  • the thickness e of the body 12a, 12b can be variable, as shown in the figure 1 for the body 12a, in order to better distribute the stresses and in particular increase its stiffness where the forces are the highest, namely near the fixing part 10a, 10b.
  • the height h of the body 12a, 12b can be variable for a better distribution of the stresses.
  • the needle according to the invention may also have a non-rectilinear profile, of curved shape or with recesses, for example to follow a curvature of the dial or to pass over the barrel of another needle or of another three-dimensional member. while keeping the indicator part of the needle close to the dial.
  • the body of the needle according to the invention could have several opaque parts serving as indicator parts and several first transparent sections carrying an anti-reflective coating.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

L'aiguille indicatrice (1a; 1b) comprend une partie de fixation (10a ; 10b) destinée à être montée sur un axe et un corps (12a ; 12b) s'étendant depuis la partie de fixation (10a; 10b). Le corps (12a; 12b) comprend un premier tronçon (13a ; 13b) réalisé entièrement dans un matériau transparent et portant, au moins sur sa surface supérieure (17a; 17b) et/ou inférieure (18a ; 18b), un revêtement antireflet (16a ; 16b), et un deuxième tronçon (14a ; 14b) opaque ou moins transparent que le premier tronçon (13a ; 13b) au moins lorsque l'aiguille (1a ; 1b) est vue de dessus, ce deuxième tronçon (14a ; 14b) constituant une partie indicatrice.The indicator needle (1a; 1b) comprises a fixing part (10a; 10b) intended to be mounted on an axis and a body (12a; 12b) extending from the fixing part (10a; 10b). The body (12a; 12b) comprises a first section (13a; 13b) made entirely of a transparent material and carrying, at least on its upper (17a; 17b) and / or lower (18a; 18b) surface, an anti-reflective coating ( 16a; 16b), and a second section (14a; 14b) opaque or less transparent than the first section (13a; 13b) at least when the needle (1a; 1b) is seen from above, this second section (14a; 14b ) constituting an indicative part.

Description

La présente invention concerne une aiguille indicatrice pour pièce d'horlogerie et une pièce d'horlogerie munie d'une telle aiguille.The present invention relates to an indicator hand for a timepiece and a timepiece provided with such a needle.

Dans la plupart des modèles de montre, les aiguilles indicatrices des heures et des minutes tournent au-dessus d'un cadran portant des indications. Souvent, en plus des indications des heures et des minutes, le cadran comprend des zones dédiées à l'affichage d'informations auxiliaires telles que le quantième, le mois, le jour de la semaine, les phases de lune, les heures et minutes de chronographe, etc. Le cadran peut ainsi comprendre un ou plusieurs guichets à travers chacun desquels est visible une indication portée par un disque tournant sous le cadran. Le cadran peut aussi porter des indications avec lesquelles coopèrent de petites aiguilles situées à une hauteur inférieure à celle des aiguilles des heures et des minutes.In most watch models, the hour and minute hands turn above a dial with indications. Often, in addition to the hours and minutes indications, the dial includes areas dedicated to the display of auxiliary information such as the date, the month, the day of the week, the moon phases, the hours and minutes of chronograph, etc. The dial can thus include one or more apertures through each of which is visible an indication carried by a disc rotating under the dial. The dial can also bear indications with which small hands cooperate located at a height lower than that of the hour and minute hands.

Lorsque les aiguilles des heures et des minutes passent au-dessus d'une zone dédiée à un affichage auxiliaire, elles masquent une partie de cette zone, ce qui peut gêner la lecture de l'information affichée.When the hour and minute hands pass over a zone dedicated to an auxiliary display, they mask part of this zone, which can hinder the reading of the information displayed.

Un tel problème se pose en fait dans tous les cas où une aiguille, pas nécessairement une aiguille d'heure ou de minute, est destinée pendant son fonctionnement à passer au-dessus d'une zone d'affichage d'une autre information. Plus l'aiguille tourne lentement, plus le masquage des informations se trouvant sous l'aguille sera gênant pour l'utilisateur. Si par exemple l'aiguille est une aiguille de semainier, elle peut cacher pendant toute une semaine un guichet, un logo, une petite aiguille, un chiffre, un index, etc.Such a problem arises in fact in all cases where a hand, not necessarily an hour or minute hand, is intended during its operation to pass over a display area of other information. The slower the needle turns, the more annoying it will be for the user to hide the information under the needle. If for example the needle is a weekly needle, it can hide for a whole week a window, a logo, a small needle, a number, an index, etc.

La présente invention vise à résoudre, en partie au moins, ce problème et propose à cette fin une aiguille indicatrice selon la revendication 1, des modes de réalisation particuliers étant définis dans les revendications dépendantes.The present invention aims to solve, at least in part, this problem and proposes for this purpose an indicator needle according to claim 1, particular embodiments being defined in the dependent claims.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de dessus d'une aiguille pour pièce d'horlogerie selon un premier exemple de réalisation de l'invention ;
  • la figure 2 est une vue en coupe partielle de l'aiguille selon le premier exemple de réalisation prise suivant la ligne A-A de la figure 1 ;
  • la figure 3 est une vue en coupe de l'aiguille selon le premier exemple de réalisation prise suivant la ligne B-B de la figure 1 ;
  • la figure 4 est une vue de dessus d'une aiguille pour pièce d'horlogerie selon un deuxième exemple de réalisation de l'invention ;
  • la figure 5 est une vue en coupe de l'aiguille selon le deuxième exemple de réalisation prise suivant la ligne C-C de la figure 4 ;
  • la figure 6 est une vue en coupe de l'aiguille selon le deuxième exemple de réalisation prise suivant la ligne D-D de la figure 4 ;
  • la figure 7 montre schématiquement un cadran comprenant un guichet et au-dessus duquel tourne une aiguille selon l'invention ;
  • la figure 8 montre schématiquement un cadran comprenant une zone dédiée à un compteur de chronographe et au-dessus duquel tourne une aiguille selon l'invention.
Other characteristics and advantages of the present invention will appear on reading the following detailed description made with reference to the accompanying drawings in which:
  • the figure 1 is a top view of a timepiece hand according to a first embodiment of the invention;
  • the figure 2 is a partial sectional view of the needle according to the first embodiment taken along line AA of the figure 1 ;
  • the figure 3 is a sectional view of the needle according to the first embodiment taken along line BB of the figure 1 ;
  • the figure 4 is a top view of a hand for a timepiece according to a second embodiment of the invention;
  • the figure 5 is a sectional view of the needle according to the second embodiment taken along line CC of the figure 4 ;
  • the figure 6 is a section view of the needle according to the second embodiment taken along line DD of the figure 4 ;
  • the figure 7 schematically shows a dial comprising a window and above which a needle according to the invention rotates;
  • the figure 8 schematically shows a dial comprising a zone dedicated to a chronograph counter and above which a hand according to the invention rotates.

Les figures 1 à 3 d'une part et 4 à 6 d'autre part montrent deux exemples d'aiguille indicatrice pour pièce d'horlogerie, notamment pour montre-bracelet, montre de poche ou pendulette, selon l'invention. L'aiguille 1a illustrée aux figures 1 à 3 est par exemple une aiguille indicatrice des heures ou des minutes ou une aiguille de chronographe. L'aiguille 1b illustrée aux figures 4 à 6 est par exemple une aiguille indicatrice du numéro de la semaine dans l'année (semainier).The Figures 1 to 3 on the one hand and 4 to 6 on the other hand show two examples of indicator needle for a timepiece, in particular for a wristwatch, pocket watch or pendulum clock, according to the invention. The needle 1a illustrated in Figures 1 to 3 is for example an hour or minute indicator hand or a chronograph hand. The needle 1b illustrated in figures 4 to 6 is for example a pointer indicating the number of the week in the year (weekly).

Chacune de ces aiguilles 1a, 1b comprend une partie de fixation 10a, 10b percée d'un trou 11a, 11b permettant le montage de l'aiguille par chassage, collage, brasage ou autre sur un axe. Depuis la partie de fixation 10a, 10b s'étend radialement un corps 12a, 12b. Le corps 12a, 12b se compose d'un premier tronçon 13a, 13b et d'un tronçon d'extrémité distale 14a, 14b, ce dernier constituant la partie indicatrice de l'aiguille destinée à coopérer avec des chiffres et/ou index d'une graduation. Le corps 12a de l'aiguille 1a présente une forme effilée d'un bout à l'autre et son tronçon d'extrémité distale 14a est donc la partie la plus mince du corps 12a. Le corps 12b de l'aiguille 1b présente une forme en T avec un premier tronçon 13b droit terminé par le tronçon d'extrémité distale 14b ayant la forme d'un arc de cercle transversal au premier tronçon 13b. L'aiguille 1a comprend en outre un contrepoids 15a s'étendant depuis la partie de fixation 10a dans le sens opposé au corps 12a.Each of these needles 1a, 1b comprises a fixing part 10a, 10b pierced with a hole 11a, 11b allowing the mounting of the needle by driving, gluing, brazing or the like on an axis. From the fixing part 10a, 10b extends radially a body 12a, 12b. The body 12a, 12b consists of a first section 13a, 13b and a distal end section 14a, 14b, the latter constituting the indicator portion of the needle intended to cooperate with numbers and / or index of a graduation. The body 12a of the needle 1a has a tapered shape from one end to the other and its distal end section 14a is therefore the thinnest part of the body 12a. The body 12b of the needle 1b has a T shape with a first straight section 13b ending in the distal end section 14b having the shape of an arc of a circle transverse to the first section 13b. The needle 1a further comprises a counterweight 15a extending from the fixing part 10a in the opposite direction to the body 12a.

Conformément à l'invention, le premier tronçon 13a, 13b est réalisé entièrement dans un matériau transparent, de préférence en verre, notamment en verre trempé, ou en saphir. De plus, ce premier tronçon 13a, 13b porte un revêtement antireflet 16a, 16b au moins sur sa surface supérieure 17a, 17b et/ou sur sa surface inférieure 18a, 18b, et de préférence sur toute sa surface, la surface supérieure 17a, 17b étant la surface vue par l'utilisateur lorsqu'il regarde le cadran de la pièce d'horlogerie de dessus (ou de face). Le revêtement antireflet 16a, 16b peut être du même type que ceux utilisés pour les glaces de montre. Grâce à son matériau transparent et au revêtement antireflet 16a, 16b, le premier tronçon 13a, 13b est quasiment invisible à l'utilisateur et ne cache donc pas les informations portées par le cadran.According to the invention, the first section 13a, 13b is made entirely of a transparent material, preferably glass, especially tempered glass, or sapphire. In addition, this first section 13a, 13b carries an anti-reflective coating 16a, 16b at least on its upper surface 17a, 17b and / or on its lower surface 18a, 18b, and preferably over its entire surface, the upper surface 17a, 17b being the surface seen by the user when he looks at the dial of the timepiece from above (or from the front). The anti-reflective coating 16a, 16b can be of the same type as those used for watch glass. Thanks to its transparent material and to the anti-reflective coating 16a, 16b, the first section 13a, 13b is almost invisible to the user and therefore does not hide the information carried by the dial.

L'aiguille peut dès lors se déplacer au-dessus de zones d'information du cadran, comme par exemple un guichet 2 (figure 7) ou une zone 3 dédiée à un compteur de chronographe (figure 8) et coopérant avec une petite aiguille (non représentée). Aux figures 7 et 8, l'aiguille selon l'invention, désignée par 4, tourne au-dessus du cadran, désigné par 5, et pointe vers une graduation 6 qui lui est associée pour afficher une information de nature différente de celles des zones 2 et 3. Quelle que soit la vitesse de déplacement de l'aiguille 4, la lecture de l'information affichée dans le guichet 2 ou dans la zone 3 d'affichage du compteur ne sera pas gênée, même partiellement. La transparence de l'aiguille 4 peut aussi être utile pour éviter de masquer d'autres (grandes) aiguilles pivotant au centre du cadran 5.The needle can therefore move over the information areas of the dial, such as a window 2 ( figure 7 ) or zone 3 dedicated to a chronograph counter ( figure 8 ) and cooperating with a small needle (not shown). To the Figures 7 and 8 , the hand according to the invention, designated by 4, rotates above the dial, designated by 5, and points to a graduation 6 associated therewith to display information of a different nature from that of zones 2 and 3. Which that is the speed of movement of the needle 4, the reading of the information displayed in the window 2 or in the area 3 of the counter display will not be embarrassed, even partially. The transparency of the needle 4 can also be useful to avoid hiding other (large) needles pivoting in the center of the dial 5.

De préférence, afin d'améliorer encore la transparence du premier tronçon 13a, 13b, au moins la ou les surfaces du premier tronçon 13a, 13b qui portent le revêtement antireflet 16a, 16b sont polies. De préférence encore, toute la surface du premier tronçon 13a, 13b est polie avant l'application du revêtement antireflet 16a, 16b.Preferably, in order to further improve the transparency of the first section 13a, 13b, at least the surface or surfaces of the first section 13a, 13b which carry the anti-reflective coating 16a, 16b are polished. More preferably, the entire surface of the first section 13a, 13b is polished before the application of the anti-reflective coating 16a, 16b.

Pour permettre à l'aiguille 1a, 1b, 4 d'afficher une information en collaboration avec la graduation 6, son tronçon d'extrémité distale 14a, 14b est opaque ou moins transparent que le premier tronçon 13a, 13b, au moins lorsque l'aiguille 1a, 1b, 4 et le cadran 5 sont vus de dessus (ou de face), de manière à être visible à l'utilisateur.To allow the needle 1a, 1b, 4 to display information in collaboration with the scale 6, its distal end section 14a, 14b is opaque or less transparent than the first section 13a, 13b, at least when the needle 1a, 1b, 4 and the dial 5 are seen from above (or from the front), so as to be visible to the user.

Dans un mode de réalisation typique, l'aiguille 1a, 1b est en une seule pièce, en verre ou en saphir, et porte le revêtement antireflet 16a, 16b sur toute sa surface, et son tronçon d'extrémité distale 14a, 14b est en outre traité en surface pour être opaque ou moins transparent que le premier tronçon 13a, 13b. Le traitement de surface du tronçon d'extrémité distale 14a, 14b peut consister à déposer sur ce dernier une couche opaque 19a, 19b, par exemple une couche de peinture ou une couche métallique. Cette couche opaque 19a, 19b peut être déposée uniquement sur la surface supérieure et/ou sur la surface inférieure, ou sur toute la surface du tronçon d'extrémité distale 14a, 14b. Cette couche opaque 19a, 19b peut être déposée de différentes manières, par exemple par dépôt physique en phase vapeur (PVD) ou dépôt chimique en phase vapeur (CVD) dans le cas d'un revêtement métallique. Dans une variante, le traitement de surface du tronçon d'extrémité distale 14a, 14b peut consister dans un dépolissage ou dans une texturation par laser de tout ou partie de la surface du tronçon 14a, 14b. Pour le montage de l'aiguille 1a, 1b sur son axe, une pièce intermédiaire, par exemple en laiton, peut être brasée ou fixée élastiquement dans le trou 11a, 11b puis chassée sur l'axe.In a typical embodiment, the needle 1a, 1b is in one piece, made of glass or sapphire, and carries the anti-reflective coating 16a, 16b over its entire surface, and its distal end section 14a, 14b is further surface treated to be opaque or less transparent than the first section 13a, 13b. The surface treatment of the distal end section 14a, 14b may consist in depositing on the latter an opaque layer 19a, 19b, for example a layer of paint or a metallic layer. This opaque layer 19a, 19b can be deposited only on the upper surface and / or on the lower surface, or on the entire surface of the distal end section 14a, 14b. This opaque layer 19a, 19b can be deposited in different ways, for example by physical vapor deposition (PVD) or chemical vapor deposition (CVD) in the case of a metallic coating. Alternatively, the surface treatment of the distal end section 14a, 14b may consist of a frosting or a laser texturing of all or part of the surface of the section 14a, 14b. For mounting the needle 1a, 1b on its axis, an intermediate piece, for example made of brass, can be brazed or fixed elastically in hole 11a, 11b and then driven out on the axis.

Le matériau transparent choisi dans la présente invention, notamment verre ou saphir, est un matériau à faible densité qui confère à l'aiguille 1a, 1b une faible inertie.The transparent material chosen in the present invention, in particular glass or sapphire, is a low density material which gives the needle 1a, 1b a low inertia.

L'aiguille 1a, 1b, notamment lorsqu'elle est en saphir, peut être obtenue par une technique de gravure. Toutefois, la méthode de fabrication préférée dans la présente invention, notamment lorsque l'aiguille 1a, 1b est en verre, est l'impression 3D, plus particulièrement la technique connue sous le nom FEMTOPRINT (marque déposée) qui permet l'obtention de formes complexes et évidées pour alléger la pièce et diminuer encore ainsi son inertie. L'aiguille 1a illustrée aux figures 1 à 3 a sa surface supérieure qui est chanfreinée, donnant à la surface supérieure du corps 12a, en particulier à la surface supérieure 17a du premier tronçon 13a, une forme facettée (cf. figure 3) qui allège l'aiguille et améliore son esthétique. Le corps 12a est en outre allégé par une cannelure 20a formée dans sa surface inférieure. Le premier tronçon 13b du corps 12b de l'aiguille 1b illustrée aux figures 4 à 6 est un demi-cylindre (cf. figure 6). La surface supérieure 17b de ce premier tronçon 13b est ainsi bombée, sans arête. Cette forme aussi allège l'aiguille et améliore son esthétique.The needle 1a, 1b, in particular when it is made of sapphire, can be obtained by an etching technique. However, the preferred manufacturing method in the present invention, in particular when the needle 1a, 1b is made of glass, is 3D printing, more particularly the technique known under the name FEMTOPRINT (registered trademark) which makes it possible to obtain shapes. complex and hollowed out to lighten the part and thus further reduce its inertia. The needle 1a illustrated in Figures 1 to 3 has its upper surface which is chamfered, giving the upper surface of the body 12a, in particular the upper surface 17a of the first section 13a, a faceted shape (cf. figure 3 ) which lightens the needle and improves its aesthetics. The body 12a is further lightened by a groove 20a formed in its lower surface. The first section 13b of the body 12b of the needle 1b illustrated in figures 4 to 6 is a half-cylinder (cf. figure 6 ). The upper surface 17b of this first section 13b is thus curved, without any edge. This shape also lightens the needle and improves its aesthetics.

L'aiguille 1a peut être évidée de différentes manières que celle illustrée aux figures 2 et 3. Par exemple, l'évidement pourrait être réalisé essentiellement à l'intérieur de l'aiguille sans débouché, ou presque, vers l'extérieur, comme le permet le procédé FEMTOPRINT.The needle 1a can be hollowed out in different ways than that illustrated in the figures 2 and 3 . For example, the recess could be carried out essentially inside the needle with no outlet, or almost, towards the outside, as the FEMTOPRINT process allows.

L'épaisseur e du corps 12a, 12b peut être variable, comme représenté à la figure 1 pour le corps 12a, afin de mieux répartir les contraintes et notamment augmenter sa raideur là où les forces sont les plus élevées, à savoir près de la partie de fixation 10a, 10b. Au lieu d'une épaisseur e variable comme dans l'exemple de la figure 1, ou en plus d'une telle variation d'épaisseur, la hauteur h du corps 12a, 12b peut être variable pour une meilleure répartition des contraintes.The thickness e of the body 12a, 12b can be variable, as shown in the figure 1 for the body 12a, in order to better distribute the stresses and in particular increase its stiffness where the forces are the highest, namely near the fixing part 10a, 10b. Instead of a variable thickness e as in the example of the figure 1 , or in addition to such a variation in thickness, the height h of the body 12a, 12b can be variable for a better distribution of the stresses.

L'aiguille selon l'invention peut aussi avoir un profil non rectiligne, de forme courbe ou avec des décrochements, pour par exemple suivre une courbure du cadran ou passer au-dessus du canon d'une autre aiguille ou d'un autre organe tridimensionnel tout en gardant la partie indicatrice de l'aiguille proche du cadran.The needle according to the invention may also have a non-rectilinear profile, of curved shape or with recesses, for example to follow a curvature of the dial or to pass over the barrel of another needle or of another three-dimensional member. while keeping the indicator part of the needle close to the dial.

Le corps de l'aiguille selon l'invention pourrait avoir plusieurs parties opaques servant de parties indicatrices et plusieurs premiers tronçons transparents portant un revêtement antireflet.The body of the needle according to the invention could have several opaque parts serving as indicator parts and several first transparent sections carrying an anti-reflective coating.

Claims (16)

Aiguille indicatrice (1a ; 1b) pour pièce d'horlogerie comprenant une partie de fixation (10a ; 10b) destinée à être montée sur un axe et un corps (12a ; 12b) s'étendant depuis la partie de fixation (10a ; 10b), caractérisé en ce que le corps (12a ; 12b) comprend : - un premier tronçon (13a ; 13b) réalisé entièrement dans un matériau transparent et portant, au moins sur sa surface supérieure (17a ; 17b) et/ou inférieure (18a ; 18b), un revêtement antireflet (16a ; 16b), et - un deuxième tronçon (14a ; 14b) opaque ou moins transparent que le premier tronçon (13a ; 13b) au moins lorsque l'aiguille (1a ; 1b) est vue de dessus, ce deuxième tronçon (14a ; 14b) constituant une partie indicatrice. Indicator hand (1a; 1b) for a timepiece comprising a fixing part (10a; 10b) intended to be mounted on an axis and a body (12a; 12b) extending from the fixing part (10a; 10b) , characterized in that the body (12a; 12b) comprises: a first section (13a; 13b) made entirely of a transparent material and bearing, at least on its upper (17a; 17b) and / or lower (18a; 18b) surface, an anti-reflective coating (16a; 16b), and - A second section (14a; 14b) opaque or less transparent than the first section (13a; 13b) at least when the needle (1a; 1b) is viewed from above, this second section (14a; 14b) constituting an indicator part . Aiguille indicatrice (1a ; 1b) selon la revendication 1, caractérisée en ce que le deuxième tronçon (14a ; 14b) est une partie d'extrémité distale du corps (12a ; 12b).Indicating needle (1a; 1b) according to claim 1, characterized in that the second section (14a; 14b) is a distal end part of the body (12a; 12b). Aiguille indicatrice (1a ; 1b) selon la revendication 1 ou 2, caractérisée en ce que le premier tronçon (13a ; 13b) s'étend depuis la partie de fixation (10a ; 10b) jusqu'au deuxième tronçon (14a ; 14b).Indicating needle (1a; 1b) according to claim 1 or 2, characterized in that the first section (13a; 13b) extends from the fixing part (10a; 10b) to the second section (14a; 14b). Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le premier tronçon (13a ; 13b) porte le revêtement antireflet (16a ; 16b) sur toute sa surface.Indicating needle (1a; 1b) according to any one of claims 1 to 3, characterized in that the first section (13a; 13b) carries the anti-reflective coating (16a; 16b) over its entire surface. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le matériau transparent est du verre ou du saphir.Indicating needle (1a; 1b) according to any one of claims 1 to 4, characterized in that the transparent material is glass or sapphire. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le deuxième tronçon (14a ; 14b) est réalisé dans ledit matériau transparent mais est traité en surface pour être opaque ou moins transparent que le premier tronçon (13a, 13b) au moins lorsque l'aiguille (1a ; 1b) est vue de dessus.Indicating needle (1a; 1b) according to any one of claims 1 to 5, characterized in that the second section (14a; 14b) is made of said transparent material but is treated on the surface to be opaque or less transparent than the first section (13a, 13b) at least when the needle (1a; 1b) is viewed from above. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le deuxième tronçon (14a ; 14b) est réalisé dans ledit matériau transparent mais porte une couche (19a, 19b) qui le rend opaque ou moins transparent que le premier tronçon (13a, 13b) au moins lorsque l'aiguille (1a ; 1b) est vue de dessus.Indicating needle (1a; 1b) according to any one of claims 1 to 6, characterized in that the second section (14a; 14b) is made of said transparent material but carries a layer (19a, 19b) which makes it opaque or less transparent than the first section (13a, 13b) at least when the needle (1a; 1b) is viewed from above. Aiguille indicatrice (1a ; 1b) selon la revendication 7, caractérisée en ce que ladite couche (19a, 19b) est une couche de peinture ou une couche métallique.Indicating needle (1a; 1b) according to claim 7, characterized in that said layer (19a, 19b) is a layer of paint or a metallic layer. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que tout ou partie de la surface du deuxième tronçon (14a ; 14b) est dépoli ou texturé pour rendre le deuxième tronçon (14a ; 14b) opaque ou moins transparent que le premier tronçon (13a, 13b) au moins lorsque l'aiguille (1a ; 1b) est vue de dessus.Indicating needle (1a; 1b) according to any one of claims 1 to 6, characterized in that all or part of the surface of the second section (14a; 14b) is frosted or textured to make the second section (14a; 14b) opaque or less transparent than the first section (13a, 13b) at least when the needle (1a; 1b) is viewed from above. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 9, caractérisée en ce qu'elle est en une seule pièce.Indicating needle (1a; 1b) according to any one of Claims 1 to 9, characterized in that it is in one piece. Aiguille indicatrice (1a) selon l'une quelconque des revendications 1 à 10, caractérisée en ce que la surface supérieure (17a) du premier tronçon (13a) est chanfreinée.Indicating needle (1a) according to any one of claims 1 to 10, characterized in that the upper surface (17a) of the first section (13a) is chamfered. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 10, caractérisée en ce que la surface supérieure (17b) du premier tronçon (13b) est bombée, sans arête.Indicating needle (1a; 1b) according to any one of claims 1 to 10, characterized in that the upper surface (17b) of the first section (13b) is curved, without edge. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 12, caractérisée en ce qu'au moins la ou les surfaces du premier tronçon (13a ; 13b) qui portent le revêtement antireflet (16a ; 16b) sont polies.Indicating needle (1a; 1b) according to any one of Claims 1 to 12, characterized in that at least the surface or surfaces of the first section (13a; 13b) which carry the anti-reflective coating (16a; 16b) are polished. Aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 13, caractérisée en ce que le corps (12a) est évidé.Indicating needle (1a; 1b) according to any one of claims 1 to 13, characterized in that the body (12a) is hollowed out. Pièce d'horlogerie comprenant une aiguille indicatrice (1a ; 1b) selon l'une quelconque des revendications 1 à 14.Timepiece comprising an indicator hand (1a; 1b) according to any one of claims 1 to 14. Pièce d'horlogerie selon la revendication 15, caractérisée en ce que l'aiguille indicatrice (4) est agencée pour pivoter au-dessus d'un cadran (5), le premier tronçon (13a; 13b) permettant à l'aiguille indicatrice (4) de passer au-dessus d'au moins une zone d'information (2, 3) du cadran (5) sans la masquer même partiellement.Timepiece according to claim 15, characterized in that the indicator hand (4) is arranged to pivot above a dial (5), the first section (13a; 13b) allowing the indicator hand ( 4) to pass over at least one information area (2, 3) of the dial (5) without even partially masking it.
EP18201140.3A 2018-10-18 2018-10-18 Indicator hand for a timepiece Active EP3640745B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP22203199.9A EP4145229A1 (en) 2018-10-18 2018-10-18 Indicating hand for timepiece
EP18201140.3A EP3640745B1 (en) 2018-10-18 2018-10-18 Indicator hand for a timepiece
EP19790083.0A EP3867706A1 (en) 2018-10-18 2019-10-17 Hand for indicating seconds or fractions of a second for a timepiece
EP19790085.5A EP3867707B1 (en) 2018-10-18 2019-10-17 Indicator hand for a timepiece
PCT/IB2019/058857 WO2020079633A1 (en) 2018-10-18 2019-10-17 Hand for indicating seconds or fractions of a second for a timepiece
PCT/IB2019/058860 WO2020079636A1 (en) 2018-10-18 2019-10-17 Indicating hand for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18201140.3A EP3640745B1 (en) 2018-10-18 2018-10-18 Indicator hand for a timepiece

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP22203199.9A Division-Into EP4145229A1 (en) 2018-10-18 2018-10-18 Indicating hand for timepiece
EP22203199.9A Division EP4145229A1 (en) 2018-10-18 2018-10-18 Indicating hand for timepiece

Publications (2)

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EP3640745A1 true EP3640745A1 (en) 2020-04-22
EP3640745B1 EP3640745B1 (en) 2023-02-22

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EP18201140.3A Active EP3640745B1 (en) 2018-10-18 2018-10-18 Indicator hand for a timepiece
EP22203199.9A Pending EP4145229A1 (en) 2018-10-18 2018-10-18 Indicating hand for timepiece
EP19790085.5A Active EP3867707B1 (en) 2018-10-18 2019-10-17 Indicator hand for a timepiece
EP19790083.0A Pending EP3867706A1 (en) 2018-10-18 2019-10-17 Hand for indicating seconds or fractions of a second for a timepiece

Family Applications After (3)

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EP22203199.9A Pending EP4145229A1 (en) 2018-10-18 2018-10-18 Indicating hand for timepiece
EP19790085.5A Active EP3867707B1 (en) 2018-10-18 2019-10-17 Indicator hand for a timepiece
EP19790083.0A Pending EP3867706A1 (en) 2018-10-18 2019-10-17 Hand for indicating seconds or fractions of a second for a timepiece

Country Status (2)

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WO (2) WO2020079633A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2023036977A1 (en) * 2021-09-13 2023-03-16 Maturitas As An improved watch hand system providing improved readability of information displayed on different locations of a watch dial
WO2023036968A1 (en) * 2021-09-13 2023-03-16 Maturitas As An improved watch hand providing improved readability of information displayed on a wristwatch dial

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DE822293C (en) * 1949-07-16 1951-11-26 Uhrenfabriken Gebrueder Jungha Hands for timepiece u. like
DE29604580U1 (en) * 1996-03-12 1997-05-15 Liauw, Ek Tjien, 60323 Frankfurt 3-hand calendar clock with 3 rings at the end showing the date, month and day; the dial is divided into 3 circles for day, month, date
FR2867285A1 (en) * 2004-03-03 2005-09-09 Benoit Espiau Clock device for wrist watch and table clock, has digital dial integrated to two analog dials, one indicating hour using one needle and other indicating minutes and seconds using two other needles, and digital insert with two needles
CH707437A1 (en) * 2013-01-10 2014-07-15 Richemont Int Sa Method for allowing e.g. lower bridge of movement of e.g. wrist watch to be invisible in spectrum of visible wavelengths, involves performing treatment e.g. antireflective treatment, of watch glass to reduce light reflected by component

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JP4481564B2 (en) * 2001-12-13 2010-06-16 アスラブ・エス アー Particularly, a luminous hand of a clock and a display device having the same
EP1722281A1 (en) 2005-05-12 2006-11-15 ETA SA Manufacture Horlogère Suisse Analogue indicating organ in crystalline material, timepiece provided with such an indicating organ, and manufacturing method thereof

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DE822293C (en) * 1949-07-16 1951-11-26 Uhrenfabriken Gebrueder Jungha Hands for timepiece u. like
DE29604580U1 (en) * 1996-03-12 1997-05-15 Liauw, Ek Tjien, 60323 Frankfurt 3-hand calendar clock with 3 rings at the end showing the date, month and day; the dial is divided into 3 circles for day, month, date
FR2867285A1 (en) * 2004-03-03 2005-09-09 Benoit Espiau Clock device for wrist watch and table clock, has digital dial integrated to two analog dials, one indicating hour using one needle and other indicating minutes and seconds using two other needles, and digital insert with two needles
CH707437A1 (en) * 2013-01-10 2014-07-15 Richemont Int Sa Method for allowing e.g. lower bridge of movement of e.g. wrist watch to be invisible in spectrum of visible wavelengths, involves performing treatment e.g. antireflective treatment, of watch glass to reduce light reflected by component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023036977A1 (en) * 2021-09-13 2023-03-16 Maturitas As An improved watch hand system providing improved readability of information displayed on different locations of a watch dial
WO2023036968A1 (en) * 2021-09-13 2023-03-16 Maturitas As An improved watch hand providing improved readability of information displayed on a wristwatch dial

Also Published As

Publication number Publication date
EP3867707B1 (en) 2022-11-02
EP3640745B1 (en) 2023-02-22
EP3867707A1 (en) 2021-08-25
EP3867706A1 (en) 2021-08-25
WO2020079633A1 (en) 2020-04-23
WO2020079636A1 (en) 2020-04-23
EP4145229A1 (en) 2023-03-08

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