EP4083717A1 - Pied pour cadran horloger, plaque pour cadran horloger et cadran horloger - Google Patents

Pied pour cadran horloger, plaque pour cadran horloger et cadran horloger Download PDF

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Publication number
EP4083717A1
EP4083717A1 EP21171252.6A EP21171252A EP4083717A1 EP 4083717 A1 EP4083717 A1 EP 4083717A1 EP 21171252 A EP21171252 A EP 21171252A EP 4083717 A1 EP4083717 A1 EP 4083717A1
Authority
EP
European Patent Office
Prior art keywords
foot
dial plate
dial
plate
timepiece
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.)
Pending
Application number
EP21171252.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Daniel Fiammingo
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.)
Rolex SA
Original Assignee
Rolex 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 Rolex SA filed Critical Rolex SA
Priority to EP21171252.6A priority Critical patent/EP4083717A1/fr
Priority to JP2022071737A priority patent/JP2022171599A/ja
Priority to US17/729,559 priority patent/US20220350293A1/en
Priority to CN202210475801.8A priority patent/CN115268243A/zh
Publication of EP4083717A1 publication Critical patent/EP4083717A1/fr
Pending legal-status Critical Current

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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
    • G04B19/12—Selection of materials for dials or graduations markings
    • 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
    • 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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/0015—Light-, colour-, line- or spot-effects caused by or on stationary parts

Definitions

  • the invention relates to a foot for a watch dial.
  • the invention also relates to a plate for a watch dial.
  • the invention also relates to a watch dial comprising such a foot and/or such a plate.
  • the invention also relates to a timepiece comprising such a watch dial or such a foot or such a plate.
  • the invention finally relates to a method for mounting such a dial or such a timepiece.
  • Clock faces generally have feet.
  • the latter are usually attached to a lower surface of the dial, generally by welding or brazing, and are designed to be housed in bores formed on an upper surface of the frame of the movement of the timepiece.
  • the dial must be made of a material supporting such an assembly method, or comprise a lower dial plate comprising the feet or supporting such an assembly method.
  • a lower dial plate can then be attached to the dial, in particular by gluing, in particular by means of an adhesive strip.
  • such an assembly solution is not devoid of inconveniences, in particular with regard to its repeatability, in particular with regard to the dosage of the glue and its evolution in the time.
  • the patent application EP3489764 discloses a dial formed of a first plate made of a fragile material, which is glued to a second plate made of a metallic material such as brass. It is specified in particular that these plates can be secured by the through an adhesive tape. Besides the disadvantages inherent in the use of an adhesive, such a design is not optimal insofar as it imposes a dial whose thickness is dictated by the assembly of two superposed plates.
  • the document FR1021251 discloses a dial comprising two movable feet.
  • Each of the feet has the particularity of comprising a split head shaped to be housed respectively within a first and a second groove formed in a dial plate.
  • Each groove comprises a dovetail section which is adapted to receive a foot head, and thus block said foot axially facing the dial plate.
  • the head of the foot is elastically deformed within the groove, which allows said foot to be held in position in the plane of the dial by a single friction effect, without any other locking means. The foot can therefore be moved inadvertently, which is not desirable.
  • EP2952974 discloses a method for assembling a foot on a dial plate, which notably involves a step of crimping said foot within a groove formed on the dial plate. More particularly, the groove comprises a shoulder intended to cooperate at least partially with a head of the foot, in order to allow the axial retention of the foot facing the dial plate. This shoulder further comprises a plastic deformation zone intended to be deformed against the head of the foot, in order to allow the blocking in translation of the foot within the groove, and thus fix the foot on the dial plate.
  • Such an assembly solution requires a dial plate made of a material comprising a plastic deformation zone and is therefore not suitable for assembling a foot on a stone or ceramic dial plate.
  • Requirement US2020080580 relates to a device for assembling a first component on a second component made of a fragile material, in particular a ceramic such as zirconia or alumina.
  • This device consists of a screw-foot provided with a portion comprising a non-circular section, which is intended to be housed inside a groove arranged at the level of an opening formed within the second component. made of fragile material.
  • the screw foot is thus retained axially within the second component, by means of a shoulder formed by the groove.
  • the fixing of the foot-screw within the second component is effective during the fixing of the first component on the second component, by means of a screw screwed within the foot-screw itself.
  • Such a solution for assembling a screw foot within a component made of a fragile material is therefore not sufficient in itself, and is thus not suitable for allowing the assembly of a foot on a watch dial plate.
  • the object of the invention is to provide a foot for a watch dial making it possible to improve the feet known from the prior art.
  • the invention proposes a foot of simple construction which allows easy and reliable fixing to a dial plate made of a fragile material.
  • a foot for a dial is defined by claim 1.
  • Embodiments of the foot are defined by claims 2 to 7.
  • a dial plate is defined by claim 8.
  • Embodiments of the plate are defined by claims 9 to 11.
  • a dial is defined by claim 12 or by claim 15.
  • a timepiece is defined by claim 13.
  • a method of mounting a dial is defined by claim 14.
  • the timepiece 100; 100'; 100"; 100* is for example a watch, in particular a wristwatch.
  • the timepiece 100; 100'; 100"; 100* includes a watch movement 30 and a dial 10; 10'; 10"; 10* intended to be mounted in a timepiece case or box in order to protect them from the external environment.
  • the watch movement may be an electronic movement or a mechanical movement, in particular an automatic movement, or even a hybrid movement.
  • the dial 10; 10';10"; 10* includes at least one foot 2; 2';2"; 2 * shaped to be mechanically connected to a plate 1; 1';1"; 1* of dial.
  • this foot is in the form of a foot for fixing said dial to a blank 3 of the watch movement 30.
  • the plate 1; 1';1"; 1* of dial includes visible surface 11; 11';11"; 11* of the dial, i.e. the surface which will possibly carry indexes and/or a limb and which the wearer of the timepiece will see, in particular through a crystal, when he wishes to read a time or time-derived information given by the timepiece.
  • dial 10; 10';10"; 10* advantageously consists of an assembly of one or more legs 2; 2';2"; 2* and of one and the same plate 1; 1';1"; 1* of dial.
  • the foot(s) 2; 2';2"; 2* are thus secured or attached to one and the same plate 1; 1';1"; 1*.
  • attachment we mean here any mechanical connection implemented without a bonding, welding or brazing step which can prove to be tedious and difficult to repeat.
  • suffi we mean an action making it possible to immobilize or block all the degrees of freedom.
  • uniting we mean an action making it possible to immobilize or block only certain degrees of freedom.
  • a horizontal plane P is defined as being a plane parallel to the dial plate
  • a vertical direction z is defined as the direction perpendicular to the horizontal plane P, oriented from the blank 3 towards the plate 1; 1';1"; 1* of dial, that is to say oriented leaving the plate at the level of the visible surface 11; 11';11"; 11*.
  • a horizontal plane P can be defined as being a plane comprising the perimeter or the periphery of the dial plate or passing at best through this perimeter or this periphery.
  • foot 2; 2';2"; 2* therefore extends vertically downward from the dial plate, and the dial attachment 10; 10';10"; 10 * on the blank 3 is done by a vertical approximation of the foot 2; 2';2"; 2* facing the blank 3, in particular within a bore 31 of the blank 3.
  • the fixing of the foot 2; 2';2"; 2 * within the bore 31 can be made by means of related fixing means which will not be detailed in this description.
  • Such a dial design is particularly advantageous for allowing the assembly of a dial plate made of a fragile material, that is to say having no plastic deformation range or a limited plastic deformation range.
  • the plate material may be based on ceramic, in particular a zirconia or an alumina, a fluorescent and/or phosphorescent ceramic, or a composite ceramic based on yttria-containing zirconia and Dy/Eu-doped strontium aluminate.
  • the plate may in particular advantageously be made of "luminescent zirconia", for example as described in the patent application EP2730636 .
  • the plate can be based on composite material.
  • the dial plate may be based on a mineral material or of mineral origin such as a stone such as onyx, opal, turquoise or sapphire, or based on mother-of-pearl, or based on a meteorite.
  • a mineral material or of mineral origin such as a stone such as onyx, opal, turquoise or sapphire, or based on mother-of-pearl, or based on a meteorite.
  • the Vickers hardness of the dial plate is greater than 600 HV, or even greater than 700 HV, or even greater than 800 HV.
  • the dial plate is a circular component with axis A1; A1'; A1"; A1*.
  • the dial plate could have another shape, for example polygonal, square, or rectangular.
  • the dial plate is a planar component.
  • the plate may be non-planar, for example concave or convex.
  • the dial may comprise one or more levels.
  • the feet are themselves preferably made of metal or a metal alloy. They can be made of brass. Alternatively, they can be made of steel, in particular Nivaflex ® . Preferably, the Vickers hardness of the feet is less than 600 HV.
  • the feet 2; 2'; 2"; 2* are for example in the form of an axis component A2; A2'; A2"; A2*, in particular in the form of a component comprising a first portion of revolution of axis A2; A2'; A2"; A2*.
  • the axis A2; A2'; A2"; A2* can in particular be parallel or substantially parallel to the axis A1; A1'; A1"; A1*.
  • the first portions of the feet may in particular be cylindrical or substantially cylindrical and arranged to be housed in the bores provided in the blank 3 of the watch movement 30. The first portions may also have flats.
  • a first embodiment of a timepiece 100; 100';100" is described below with reference to figures 1 to 24 .
  • the dial can include one or more feet.
  • a single foot is described below, the dial possibly comprising one or more identical or similar feet.
  • the dial preferably comprises two feet.
  • Foot 2; 2'; 2" comprises a plastically deformable element 23; 23'; 23" arranged so as to secure the foot 2; 2'; 2" on the dial plate 1; 1'; 1" by cooperation, in particular by cooperation by obstacle, of the plastically deformable element 23; 23'; 23" in distorted configuration with a 15; 15'; 15" conformation of dial plate 1; 1'; 1".
  • the dial plate 1; 1';1" comprises the conformation 15; 15';15” arranged so as to secure the foot 2; 2';2" on dial plate 1; 1';1" by cooperation of said conformation 15; 15';15" with the plastically deformable element 23; 23'; Foot 23"2;2';2".
  • the foot 2; 2'; 2" therefore comprises at least one conformation 23; 23' or an area 23" capable of deforming plastically against the dial plate.
  • the cooperation of the plastically deformable element 23; 23'; 23" and of the dial plate 1; 1'; 1", in particular of a conformation 15; 15'; 15" from the plate makes it possible to solidify, or even fix, the foot on the plate.
  • This fastening can be such that there remains a slight play between the foot and the plate, in particular a slight play around the axis A2; A2'; A2" and/or a slight play in one or more directions parallel to axis A2; A2'; A2".
  • the conformation 15; 15'; 15" is preferably concave or recessed, like a notch.
  • foot 2; 2'; 2" comprises a first positioning element 26; 26'; 26" of the foot relative to the dial plate 1; 1'; 1", in particular arranged so as to position the foot 2; 2'; 2" relative to a dial plate 1; 1'; 1" in the plane P.
  • the plate comprises a second positioning element 18; 18'; 18" of the foot 2; 2'; 2" relative to plate 1; 1'; 1".
  • This second element may comprise a bore 18; 18'; 18" and/or be arranged so as to position the foot 2; 2'; 2" relative to the plate in the plane P.
  • the first and second positioning elements cooperate to position the foot relative to the plate in the plane P.
  • the plastically deformable element 23; 23';23" is arranged so as to block the foot 2; 2';2" in the plane P, in particular arranged so as to block the foot 2 in rotation; 2';2" around axis A2; A2';A2".
  • conformation 15; 15';15” is arranged so as to block the foot 2; 2';2" in the plane P, in particular arranged so as to block foot 2 in rotation; 2';2" around axis A2; A2';A2". Blocking takes place advantageously by cooperation of the plastically deformable element 23; 23';23" (in deformed configuration) and the 15; 15';15" conformation.
  • foot 2; 2'; 2" comprises a head 22; 22'; 22" comprising at least a second cylindrical portion and/or the plastically deformable element 23; 23'; 23".
  • the first positioning element 26; 26'; 26" comprises a cylindrical portion 26; 26'; 26" for positioning and/or guiding the foot in rotation around axis A2; A2'; A2" and/or the first positioning element 26; 26'; 26" forms part of the head 22; 22'; 22".
  • the foot in particular the head 22; 22'; 22"
  • This cavity is advantageously arranged to receive a tool end making it possible to move the foot relative to the plate, in particular to move the foot in rotation around the axis A2; A2'; A2".
  • the plate includes a receiving opening 13; 13'; 13", in particular a receiving groove 13; 13" or a counterbore 13' or a blind hole 13', intended to receive the head 22; 22'; Foot 22" 2; 2'; 2".
  • a first variant of the first embodiment is described below with reference to the figures 1 to 11 .
  • the figure 1 illustrates in exploded view and in perspective the dial 10 and the blank 3 of the watch movement 30 and the figure 2 illustrates dial 10 in section transverse passing through the respective axes A2 of two feet 2 assembled on the plate 1.
  • the feet 2 are respectively housed in receiving openings 13 formed on a lower face 12 of the dial plate 1, opposite to the upper face 11 of this same plate 1 which constitutes the visible face 11 of the dial 10.
  • the picture 3 illustrates a receiving opening 13 made in the plate.
  • This opening 13 is a groove provided with two parallel walls 14 connected by a rounded contour 17, which defines a surface 131 for receiving the head 22 of the foot 2.
  • This surface 131 is preferably parallel to the lower face 12 and/or to the upper face 11.
  • the walls 14 have the particularity of each comprising a notch 15 under which is formed a housing 16 which is intended to accommodate, at least partially, the head 22 of the foot 2.
  • the notch 15 comprises walls 151, 152 which define angular abutment surfaces of the head 22 of the foot 2 in its rotational movement relative to the plate 1 around the axis A2.
  • the housing 16 makes it possible to define a shoulder 161 or an abutment surface 161 of the head 22 of the foot 2 in a vertical direction visible on the figure 11 , which is complementary to surface 131. Surfaces 131 and 161 thus cooperate with the head of the foot to stop the foot in translation along axis A2 relative to plate 1.
  • the opening 13 further comprises, as a second positioning element, a bore 18 of axis A18, formed at the level of the surface 131, which acts as a means of guiding the foot 2 when it is mounted within this opening 13 .
  • the foot 2 comprises a body 21, which extends longitudinally along the axis A2 from the head 22.
  • this body 21 is in the form of a cylinder which is intended to be housed in a bore 31 of the draft 3 of the watch movement 30.
  • the foot 2 comprises two plastically deformable conformations 23 which are respectively in the form of lips 23 projecting from the head 22 in a direction parallel to the axis A2.
  • the lips and the body protrude from the head in the same direction.
  • Head 22 includes a non-circular section.
  • it comprises two flats 24 intended, in a step of assembling the foot on the plate, to be oriented in a direction parallel or substantially parallel to that of the walls 14 of the opening 13.
  • It also comprises two cylindrical portions 25 , arranged on either side of the flats 24, intended to be housed within the housings 16 in another step of assembling the foot on the plate.
  • the foot 2 also comprises, as first positioning element 26, a cylindrical portion 26 which extends longitudinally along the axis A2 from the head 22, in a direction opposite to that in which the body 21 extends. This portion 26 acts as a guide means for the foot 2 when it is mounted within the opening 13, and it is more particularly intended to be inserted into the bore 18.
  • the foot 2 comprises, as a drive element of the foot relative to the plate, an indentation 27 intended to allow said foot to move in the horizontal plane, once the head 22 is supported against the surface 131 of the opening 13.
  • This imprint is for example made in the form of notches 27 shaped to cooperate with a suitable tool.
  • this fourth step also makes it possible to generate a friction force of the lips against the notches 15, which makes it possible to hold the head 22 against the surface 131 (as represented on the figure 11 ).
  • the figure 12 illustrates a particular variation of opening 13, which has the particularity of comprising notches 19 superimposed on notches 15, which form second shoulders 162 parallel to the first shoulders 161 and intended to come into contact with each of the lips 23, once the latter plastically deformed as shown in the figure 13 .
  • opening 13 Such a conformation of opening 13 makes it possible in particular to press the head 22 against the shoulders 161, once the lips have been plastically deformed.
  • the lips or tongues 23 are provided to block with less play, or even zero play, any relative movement of the foot facing the dial plate along the horizontal plane P. They also make it possible to block with less play, or even zero play, any relative movement of the foot facing the dial plate in a vertical direction.
  • the lips or tabs 23 are provided to secure foot 2 to dial plate 1, or even to fix foot 2 to dial plate 1.
  • a third variant of the first embodiment is described below with reference to the figures 14 to 18 .
  • This third variant essentially differs from the first and second variants in terms of geometric aspects.
  • the figure 14 illustrates a schematic view of the dial 10' comprising the dial plate 1' on which the foot 2' is mounted within the reception opening 13'.
  • the foot 2' is distinguished by the fact that it comprises a head 22' provided with three fins 25' (or lugs 25') each provided to be housed in three housings 16' of the opening 13' as shown in the figure 17 .
  • the head 22' also comprises three cylindrical portions 26' (coaxial or substantially coaxial) provided to cooperate respectively with three cylindrical portions 18' (coaxial or substantially coaxial) of axis A18' partially forming the outline of the opening 13', so as to allow positioning and guiding of the foot 2' within this same opening 13'.
  • the number of fins 25' and/or of cylindrical portions 18' could differ without the principle of assembly of the foot 2' within the opening 13' being modified.
  • the foot 2' also comprises at least one lip 23' projecting from the head 22' in a direction parallel to the axis A2' and in the same direction as that in which the cylindrical body 21' of the foot extends from the head 22'. Once the foot 2' is assembled, the lip 23' is plastically deformed within a notch 15' formed on the contour of the opening 13'.
  • the foot 2' also comprises notches 27' similar to the notches 27 of the first variant, provided to allow actuation in rotation of said foot.
  • Such a foot 2' can be assembled within the opening 13' according to four steps E1, E2, E3, E4 similar to those described above.
  • the figure 15 illustrates the foot 2' within the opening 13' once the first and second steps E1, E2 have been performed.
  • Two fins 25' are here housed in cutouts 14' of opening 13', the shape of which substantially corresponds to that of the fins, while a third fin 25' is housed in notch 15'. The extent of this notch is thus adapted so as to accommodate a fin within it during assembly of the foot.
  • a third step E3 consists in driving the foot 2' in rotation around the axis A18' over an angle of 60° for example, in particular through the conformations 27', until the lip 23' is positioned next to the 15' notch.
  • the fins 25' are positioned in housings 16' which are more particularly visible on the figure 17 , so that the latter are held vertically between a surface 131' and shoulders 161' formed by the housings 16' shown on the figure 17 and 18 .
  • a fourth step E4 consists in plastically deforming the lip 23', in at least one radial direction relative to the axis A2', against the notch 15' as represented on the figure 14 .
  • the walls 151', 152' of the notch 15' define angular abutment surfaces of the lip 23', and a fortiori of the head 22' of the foot 2'.
  • this fourth step also makes it possible to generate a friction force against the notch 15', which makes it possible to hold the head 22' against the surface. 131'.
  • a fourth variant of the first embodiment is described below with reference to the figures 19 to 24 .
  • This fourth variant is distinguished from the first three by the fact that the foot 2" comprises zones 23" of lesser mechanical resistance capable of being plastically deformed in a direction parallel or substantially parallel to the axis A2" of the foot 2".
  • the figure 19 illustrates a schematic view of the dial 10" comprising the plate 1" on which the foot 2'" is mounted within a reception opening 13".
  • leg 2 (also visible on the figure 20 ) comprises a head 22" provided with two flats 24" intended, in a first step of assembling the foot on the plate 1", to be oriented in a direction parallel or substantially parallel to that of the walls 14" of the opening 13 " which takes the form of a groove as seen on the figure 19 and 21 .
  • the foot 2" also comprises two cylindrical portions 25", arranged on either side of the flats 24", which are intended to be housed, in a third assembly step, within housings 16" of the opening 13".
  • the 2" foot also includes a 26" cylindrical portion, visible on the figure 24 , which extends longitudinally along the axis A2" from the head 22", and in a direction opposite to that in which the body 21" of the foot extends from the head.
  • This portion 26" has the same function as the portion 26 of foot 2 of the first and second variants. It is here planned for cooperating with the bore 18" formed on the surface 131" of the opening 13", so as to allow the centering and guiding of the foot 2" in the opening 13".
  • Foot 2′′ also comprises an imprint comprising two notches 27′′ formed on head 22′′ and which have the same function as notches 27 and 27′ known from previous variants.
  • notches define two surfaces 271" which extend perpendicularly or substantially perpendicularly to the axis A2".
  • the thickness e1 of the head 22" at the level of the surfaces 271" is substantially less than that of the maximum thickness e2 of the head 22", the thicknesses e1 and e2 being measured in a direction parallel to the axis A2".
  • e1 is less than e2/3, or even less than e2/4.
  • e1 is less than 0.15 mm or less than 0.1 mm.
  • the surfaces 271" thus form two zones 23" of less mechanical resistance of the head 22".
  • the latter are likely to be plastically deformed within notches or holes 15" which have the particularity of being formed on the surface 131 " of opening 13" as shown in the figure 21 .
  • These holes are for example cylindrical blind holes.
  • Such a foot 2" can be assembled within the opening 13" according to four steps E1, E2, E3, E4 similar to those previously described.
  • the figure 22 illustrates the foot 2" within the opening 13" once the first and second steps E1, E2 have been performed.
  • the flats 24" are here oriented parallel to the walls 14" of the opening 13", while the portion 26" is housed in the bore 18".
  • a third step E3 consists in driving the foot 2" in rotation around the axis A18" over an angle of 90° for example, in particular through the conformations 27", until the zones 23" are positioned above the notches 15".
  • the cylindrical portions 25" of the head 22" are positioned in the housings 16" of the opening 13", more particularly visible on the figure 21 , so that the latter are held vertically between the surface 131" and the shoulders 161" formed by the housings 16".
  • a fourth step E4 consists in plastically deforming the zones 23", in a direction parallel or substantially parallel to the axis A2", within the notches 15" themselves as visible on the figure 23 and 24 . Once these zones have been deformed, the contours 151" of the notches 15" define the angular abutment surfaces of the head 22" of the foot 2". Depending on the conformation of their deformation, the zones 23" can also generate friction forces within the notches 15", which makes it possible to hold the head 22" against the surface 131" or the surface 161".
  • the areas 23" coincide within the notches 27". However, it is possible to create 23" zones outside the 27" notches.
  • a second embodiment of a timepiece 100* is described below with reference to the figures 25 to 32 .
  • the figures 25 to 31 illustrate a first variant of the second embodiment.
  • the figure 25 more particularly illustrates a schematic view of a dial 10* comprising the dial plate 1* on which the foot 2* is mounted within a reception opening 13*.
  • the foot 2* comprises a friction means, in particular a friction spring 23*, which is capable of deforming elastically so as to press the foot advantageously against the dial plate.
  • the foot 2* is in the form of an assembly consisting of a one-piece foot element 20* and a friction spring 23* having a substantially annular geometry, which is provided with two elastic arms 230* on which are formed bosses 231 *. These bosses allow the assembly of said foot 2* within the opening 13*.
  • the spring 23* is more particularly shaped to be housed within a housing 220* formed in the head 22* of the one-piece foot element 20*.
  • the spring 23* also comprises two pins 232* provided for respectively be driven into bores 28* arranged on the head 22*, so as to allow said spring 23* to be fixed within the housing 220*.
  • the pins 232* could be glued, brazed, or even welded within the bores 28*.
  • a clearance j remains between the surface 221* and the arms 230*, so that the latter can deform elastically during the assembly of the foot 2* within the opening 13*.
  • the bosses 231* protrude slightly from the head 22*, so that the latter can be actuated during the assembly of the foot 2* within of the opening 13*, and thus induce an elastic deformation of the arms 230*.
  • the principle of assembling the foot 2* within the opening 13* is very similar to that described in the context of the fourth variant of the first embodiment.
  • the opening 13* is also in the form of a groove, and notably comprises notches or holes 15* (like blind cylindrical holes) formed on the surface 131* of the opening 13*, in particular at the level of the 16* accommodation as shown on the figure 28 .
  • These notches 15* are shaped so as to accommodate the bosses 231* of the spring, so as to prevent any movement of the foot 2* in a horizontal plane, in particular any rotational movement.
  • the opening 13* also comprises a bore 18* provided to receive a cylindrical portion 26* of the foot, the function of which has been previously described within the framework of the first embodiment.
  • Such a foot 2* can be assembled within the opening 13* according to four steps E1*, E2*, E3*, E4*.
  • a first step E1* consists in making the respective axes A2* and A18* of the foot 2* and the bore 18* coincide, while orienting the flats 24* in a direction parallel or substantially parallel to that of the walls 14* of opening 13*.
  • a second step E2* consists in making a vertical approach of the foot 2* in the opening 13* in the direction z, until the bosses 231* of the spring 23* come into contact with the surface 131*.
  • a third step E3* consists in continuing the vertical approach of the foot 2* in the opening 13* in the direction z, so as to constrain the arms 230* until the head 22* comes to rest against of the area 131*.
  • the bosses 231* are retracted at least partially within the housing 220* so as to allow the implementation of the next step E4*.
  • the figure 29 is a top view of the foot 2* and of the plate 1* illustrating the configuration just before a fourth step E4*.
  • the fourth step E4* consists in rotating the foot 2* around the axis A18* over an angle of 90° for example, in particular by means of conformations 27* similar to those described previously, until the bosses 231* are positioned above the notches 15*.
  • the bosses 231* are naturally housed within the notches 15* under the effect of the elastic restitution of the arms 230*.
  • the foot 2* is prevented from performing any movement in the horizontal plane P, in particular any rotational movement within the opening 13*.
  • cylindrical portions 25* of the head 22* are positioned in the housings 16* of the opening 13*, so that the latter are maintained vertically between the surface 131* and the shoulders 161* formed by the housings 16* as visible on the figures 30 and 31 .
  • the spring 23* is provided to block with less play any relative movement of the foot facing the dial plate along the horizontal plane. It also makes it possible to block with less play any relative movement of the foot facing the dial plate in a vertical direction. Thus, the spring 23* is provided to secure the foot 2* to the dial plate 1*.
  • the spring is no longer constrained once the bosses 231* are arranged within the notches 15*. This is explained by the geometry of the arms 230* in their rest configuration: it is such that there remains an axial clearance once the cylindrical portions 25* are housed within the housings 16*.
  • the spring 23* could for example have a different geometry, in particular concave (as represented on the figure 32 ) so that there is a first level of stress during the retraction of the bosses 231* within the housing 220*, and a second level of stress, lower than the first, once the bosses 231* are arranged within the notches 15*.
  • This makes it possible in particular to press the head 22* against the shoulders 161* and thus block any relative movement of the foot facing the dial plate in a vertical direction at zero play.
  • the spring 23* is provided to secure the foot 2* to the dial plate 1*, or even to fix the foot 2* to the dial plate 1*.
  • the assembly of the foot 2; 2';2"; 2* on plate 1; 1';1"; 1* requires a rotational movement in a horizontal plane by the foot.
  • These are respectively the assembly steps E3 and E4* described above.
  • the foot could for example undergo a translational movement during these steps to bring the foot into its position in the plane P relative to the plate.
  • the foot could not have a cylindrical portion of guide 26; 26';26"; 26* and the plate may not have a cylindrical guide portion 18; 18';18"; 18*.
  • the positioning of the foot relative to the plate could be defined by the cooperation by contact of the geometries of the non-opening end of the groove and the foot.
  • the deformable elements 23; 23'; 23"; 23* are advantageously provided to lock with less play, or even zero play, any relative movement of the foot facing the dial plate along the horizontal plane P. They also allow locking with less play, or even with play zero, any relative movement of the foot facing the dial plate in a vertical direction z.
  • the different dial solutions described have the particularity of implementing a foot which comprises at least one means of deformation (plastic or elastic) allowing it to be assembled within a plate constituting the dial.
  • the foot comprises at least one conformation or one zone of lesser mechanical resistance capable of being plastically deformed within a reception opening formed in the dial plate.
  • the foot comprises an elastic means, in particular a friction spring, which is capable of deforming elastically within a receiving opening formed in the dial plate.
  • the reception openings of the feet have specific characteristics common to each of the embodiments.
  • indexing of an element or “position indexing of an element”, is meant the definition of different stable positions of an element. These stable positions can be separated by a continuum of unstable intermediate positions. Between two stable positions or two indexed positions or two indexing positions, the element passes transiently through a continuum of unstable or less stable intermediate positions.
  • the objects of the second aspect can be combined with all the characteristics of the first aspect.
  • the solutions described above are particularly advantageous for assembling a foot on a dial made of a material having little or no plastic deformation range, in particular on a dial made of a ceramic or a natural stone or more generally of a fragile material.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Toys (AREA)
  • Electromechanical Clocks (AREA)
  • Adornments (AREA)
EP21171252.6A 2021-04-29 2021-04-29 Pied pour cadran horloger, plaque pour cadran horloger et cadran horloger Pending EP4083717A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21171252.6A EP4083717A1 (fr) 2021-04-29 2021-04-29 Pied pour cadran horloger, plaque pour cadran horloger et cadran horloger
JP2022071737A JP2022171599A (ja) 2021-04-29 2022-04-25 時計文字盤脚部、時計文字盤板及び時計文字盤
US17/729,559 US20220350293A1 (en) 2021-04-29 2022-04-26 Horology dial foot, horology dial plate and horology dial
CN202210475801.8A CN115268243A (zh) 2021-04-29 2022-04-29 钟表表盘支脚、钟表表盘板和钟表表盘

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21171252.6A EP4083717A1 (fr) 2021-04-29 2021-04-29 Pied pour cadran horloger, plaque pour cadran horloger et cadran horloger

Publications (1)

Publication Number Publication Date
EP4083717A1 true EP4083717A1 (fr) 2022-11-02

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EP21171252.6A Pending EP4083717A1 (fr) 2021-04-29 2021-04-29 Pied pour cadran horloger, plaque pour cadran horloger et cadran horloger

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US (1) US20220350293A1 (ja)
EP (1) EP4083717A1 (ja)
JP (1) JP2022171599A (ja)
CN (1) CN115268243A (ja)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US780775A (en) * 1904-04-13 1905-01-24 Harrison S Bookwalter Watch-dial fastener.
FR1021251A (fr) 1950-07-03 1953-02-17 Cadran à pieds mobiles, perfectionné
EP2730636A1 (en) 2012-11-07 2014-05-14 Rolex S.A. Persistent phosphorescent composite material
EP2952974A1 (fr) 2014-06-05 2015-12-09 Kari Voutilainen Cadran de piece d'horlogerie
EP3185086A1 (fr) * 2015-12-21 2017-06-28 The Swatch Group Research and Development Ltd. Applique de cadran d'une pièce d'horlogerie
EP3489764A1 (fr) 2017-11-28 2019-05-29 Omega SA Construction pour cadran fragile
US20200080580A1 (en) 2018-09-10 2020-03-12 Apple Inc. Mechanical interlock connection of threaded fasteners to brittle materials
EP3712713A1 (fr) * 2019-03-19 2020-09-23 Rolex Sa Dispositif de cadran horloger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH622661B (fr) * 1978-11-30 Ebauches Bettlach Sa Dispositif de fixation d'un cadran d'horlogerie sur la platine d'un mouvement de montre.
CH687898B5 (de) * 1995-04-25 1997-09-30 Ebauchesfabrik Eta Ag Uhr mit einem elektrolumineszenten Zifferblatt.
EP2400354A1 (fr) * 2010-06-22 2011-12-28 The Swatch Group Research and Development Ltd. Pieds de cadran de pièce d'horlogerie
EP3241636A1 (fr) * 2016-05-03 2017-11-08 The Swatch Group Research and Development Ltd. Procede de fabrication d'une piece composite
EP3339970B1 (fr) * 2016-12-21 2022-03-23 Rubattel et Weyermann S.A. Cadran d'horlogerie dont le matériau est un alliage léger
EP3835880B1 (fr) * 2019-12-10 2022-08-10 Comadur S.A. Cadran d'horlogerie avec pieds

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US780775A (en) * 1904-04-13 1905-01-24 Harrison S Bookwalter Watch-dial fastener.
FR1021251A (fr) 1950-07-03 1953-02-17 Cadran à pieds mobiles, perfectionné
EP2730636A1 (en) 2012-11-07 2014-05-14 Rolex S.A. Persistent phosphorescent composite material
EP2952974A1 (fr) 2014-06-05 2015-12-09 Kari Voutilainen Cadran de piece d'horlogerie
EP3185086A1 (fr) * 2015-12-21 2017-06-28 The Swatch Group Research and Development Ltd. Applique de cadran d'une pièce d'horlogerie
EP3489764A1 (fr) 2017-11-28 2019-05-29 Omega SA Construction pour cadran fragile
US20200080580A1 (en) 2018-09-10 2020-03-12 Apple Inc. Mechanical interlock connection of threaded fasteners to brittle materials
EP3712713A1 (fr) * 2019-03-19 2020-09-23 Rolex Sa Dispositif de cadran horloger

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CN115268243A (zh) 2022-11-01
US20220350293A1 (en) 2022-11-03
JP2022171599A (ja) 2022-11-11

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