EP3957206A1 - Uhrkomponente, die mit einer kappe ausgestattet ist - Google Patents

Uhrkomponente, die mit einer kappe ausgestattet ist Download PDF

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Publication number
EP3957206A1
EP3957206A1 EP20191466.0A EP20191466A EP3957206A1 EP 3957206 A1 EP3957206 A1 EP 3957206A1 EP 20191466 A EP20191466 A EP 20191466A EP 3957206 A1 EP3957206 A1 EP 3957206A1
Authority
EP
European Patent Office
Prior art keywords
cap
timepiece component
assembly
cover
configuration
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
EP20191466.0A
Other languages
English (en)
French (fr)
Other versions
EP3957206B1 (de
Inventor
Benjamin Celant
Benoît Junod
Jean-Baptiste Robin
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 EP20191466.0A priority Critical patent/EP3957206B1/de
Priority to US17/401,540 priority patent/US11638467B2/en
Priority to JP2021132624A priority patent/JP2022034543A/ja
Priority to CN202110948489.5A priority patent/CN114073360A/zh
Publication of EP3957206A1 publication Critical patent/EP3957206A1/de
Application granted granted Critical
Publication of EP3957206B1 publication Critical patent/EP3957206B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/02—Link constructions
    • A44C5/04—Link constructions extensible
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • 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
    • G04B45/0084—Pictures or inscriptions on the case or parts thereof, attaching complete pictures
    • G04B45/0092—Changeable parts

Definitions

  • the present invention relates to a timepiece component equipped with at least one cap. It also relates to a timepiece comprising such a timepiece component. It also relates to a method of manufacturing such a timepiece component.
  • a general object of the invention is to propose a new watch component solution equipped with a cap, which improves the existing solutions, by meeting the abovementioned requirements as well as possible.
  • an object of the invention is to provide a watch component solution equipped with a cap that is robust, reliable, simple to implement, and able to present an attractive aesthetic appearance.
  • the invention is based on a timepiece component, characterized in that it has a first part and a removable cap, the timepiece component being able to occupy a fixing configuration in which the removable cap is fixed on the first part and a free configuration in which the cap is detached from the first part, the first part comprising at least two attachment members intended to cooperate with respectively at least two corresponding assembly members of the cap in the fixing configuration, and characterized in that the cap and/or the first part is elastically deformable from a rest position to a deformed position, such that the deformed position of the cap is suitable for positioning and removing the cap from the first part for the passage of the fixing configuration towards the free configuration of the watch component and vice versa, and so that the rest position allows the e stable maintenance of the fixing configuration of the watch component in which the at least two assembly members of the cap are in engagement with the at least two attachment members of the first part.
  • the invention will be described in the context of a clasp cover. However, it could alternatively be integrated into any other horological component, in particular a covering component such as a middle part, a bracelet link, etc.
  • the figure 1 represents a bracelet clasp according to one embodiment of the invention.
  • This clasp comprises two blades 1, 2 articulated by one of their ends around an axis.
  • the free end of blade 1 is secured to a first hinge pin serving to articulate a complementary cover 7, 7c and a second hinge pin serving to articulate one end of one of the strands of the bracelet.
  • the free end of blade 2 is secured to a mobile structure 3 articulated in rotation.
  • the clasp can thus occupy an open position, as represented by the figure 1 , partially deployed, and a closed position in which the second blade 2 and the structure 3 are folded and locked on the first blade 1.
  • the end of a first bracelet strand is fixed on the second end of the first blade 1 and the end of a second bracelet strand is fixed to the free end of the mobile structure 3.
  • the invention relates more specifically to a clasp cover.
  • This cover is mainly integrated into the structure 3 of the clasp.
  • the cover comprises a first part 13 which has a vertical cross-section in the shape of an inverted U, having an upper face visible to a user, and two side walls, substantially perpendicular to the upper face, intended to laterally cover the entire clasp and of its mechanism, to conceal it in the closed position and ensure the aesthetic appearance of the solution.
  • the lid further comprises a removable cap 13c. The lid can thus occupy a fixing configuration in which the removable cap 13c is fixed on the first part 13 and a free configuration in which the cap 13c is detached from the first part 13.
  • the clasp comprises a complementary cover 7, 7c arranged on the first blade 1 and intended to be folded down in the closed position of the clasp to position itself in the continuity of the cover 13 arranged on the mobile structure 3 and cover a lever of lock 12, and form a single cover of the clasp including a security.
  • This complementary cover part has a structure similar to that described above, that is to say a first part 7 cooperating with a removable cap 7c. It can be assembled according to the same concept as the invention or not. It will not be described in more detail below.
  • the upper surface of the first part 13 of the cover has a planar orthogonal projection of substantially rectangular shape.
  • the cap 13c is presented as a substantially planar and elongated element which extends over the entire length of the upper surface of the cover and over a portion of the width of the upper surface of the cover, for example between 20% and 100%, or even between 30% and 90%, or even between 45% and 55%. It is centered or not on the cover.
  • the cap 13c is arranged in a recessed portion of the first part 13, in the thickness of the upper surface of the first part of the cover, so that it covers this second recessed portion and occupies the volume released by this recessed portion.
  • the upper surface of the cap comes in continuity with the upper surface of the first part, forming a generally continuous upper surface of the lid.
  • the upper surface of the cap is recessed or protrudes from the upper surface of the first part.
  • the figure 2 and 3 represent a first variant of the cover according to the embodiment. These figures make it possible to visualize the device for fixing the cover 13c to the first part 13 of the lid.
  • the cap 13c comprises at least a first assembly member 40 and a second assembly member 41, which are arranged at the two opposite distal ends, on the side of the surface of the cap 13c intended for orientation towards the first part 13 of the lid, referred to as the lower surface according to the chosen convention.
  • the first part 13 of the cover comprises at least a first attachment member 50 and a second attachment member 51.
  • the first assembly member 40 of the cap 13c cooperates with the first attachment member 50 of the first part 13 and the second assembly member 41 of the cap 13c cooperates with the second attachment member 51 of the first part 13.
  • the attachment members 50, 51 of the first part 13 and the assembly members 40, 41 of the cap 13c are engaged.
  • This hooking arrangement is designed to guarantee the reliable holding of the cap 13c, in its rest position, on the first part 13 of the lid.
  • the cap 13c is elastically deformable from a rest position to a deformed position, so that the deformed position of the cap 13c is suitable for its positioning and its withdrawal from the first part 13 for the passage of the configuration fixing to the free configuration of the cover and vice versa, and so that its rest position allows the stable maintenance of the fixing configuration of the cover.
  • the cap 13c is separated from the first part 13 by a cavity which allows the deformation of the cap 13c from its rest position to its deformed position by a simple pressure on the upper surface of the cap 13c , in the vertical direction illustrated by the arrow P. By this pressure, the cap 13c deforms and reduces all or part of the volume of the cavity. The two ends of the cap 13c thus deviate from each other by a distance ⁇ d.
  • the cavity therefore releases a space of height ⁇ L between the upper surface of the first part 13 and the lower surface facing the cap 13c, this height being considered along the vertical axis z.
  • This cavity has a volume such that the first part 13 forms an abutment limiting the maximum deformation of the cap 13c below its elastic limit when it is deformed until it comes into contact with the first part 13 by the pressure aforementioned.
  • the height ⁇ L of the cavity thus represents a course of deformation and assembly of the cap 13c.
  • the cap 13c is such that its mechanical deformation properties allow it to lengthen in its deformed position, by modifying its natural curvature in the rest position, which allows its assembly members 40, 41 to move apart by a distance ⁇ d and to escape their grip with the hooking members 50, 51.
  • the cap 13c can thus be removed from the first part 13 of the cover.
  • the cap 13c therefore has a curvature along a radius of curvature at rest in the rest position, and has a curvature along an increased radius of curvature in the deformed position.
  • the mechanical deformation properties of the cap 13c are defined by several parameters, in particular its geometry and more particularly its thickness, and the material of which it is made. These parameters are chosen to reach a compromise in the definition of the pressure force.
  • the latter is provided to deform the cap 13c to its deformed position, without however being too large to allow said cap to be released without difficulty, in particular manually, without tools. This force is also sufficient to prevent accidental release.
  • the cap 13c is presented as a one-piece element. It can for example be in metal or in a material which has mechanical properties of resistance to shocks and scratches. and/or is capable of presenting a very attractive aesthetic appearance, for example a ceramic, a cermet, a glass, a sapphire, a mother-of-pearl, amber or a natural or reconstituted stone.
  • the first part 13 of the cover is made of a metal alloy, for example stainless steel, gold, platinum, bronze or titanium.
  • the two assembly members 40, 41 of the cap have a hook-shaped section forming notches cooperating with complementary shapes of the attachment members 50, 51 of the first part 13.
  • the deformed position of the cap 13c does not allow the release of the cap 13c from the first part 13 of the lid, the elongation ⁇ d not being sufficient. More precisely, the release by simple unclipping of the cap 13c is not possible.
  • a modification of the temperature of the cap 13c and/or of the first part 13 makes it possible to obtain an additional relative spacing ⁇ dt between the assembly elements thanks to the thermal expansion/contraction.
  • the deformed position of the cap 13c under the combined effect of the applied pressure and the thermal expansion of the cap 13c implies a total deformation ⁇ d + ⁇ dt which thus allows the separation of the cap 13c and of the first part 13 of the timepiece component, according to the principle described above in the context of the first variant embodiment.
  • the thermal expansion contribution makes it possible to modify the connection between the cap 13c and the first one part 13, so that the deformed position of the cap 13c allows its release, while it does not allow its release at room temperature.
  • the thermal expansion applied thus makes it possible to increase the range of movement between the cap and the first part of the lid.
  • This embodiment therefore offers additional security relative to the first variant embodiment, avoiding accidental release of the cap at ambient temperature.
  • the rest position of the cap 13c does not allow its release. It therefore requires the combined action of thermal expansion and mechanical deformation to allow assembly and release of the cap 13c.
  • the assembly temperature of the cap 13c and/or of the first part 13 is such that it requires a temperature difference between the cap 13c and the first part 13 greater than or equal to 80 degrees C, or even greater than or equal to at 100 degrees C, or even greater than or equal to 200 degrees C, or even greater than or equal to 300 degrees C, or even greater than or equal to 400 degrees C, or even greater than or equal to 500 degrees C.
  • action is taken on the material of the cap or of the first part having the highest coefficient of expansion, by heating it or cooling it according to its position in the assembly.
  • the temperatures and/or the temperature ramps are selected to obtain sufficient expansion or contraction, without fundamentally modifying the structure of the material on which one acts and while controlling any thermal shocks.
  • the dimensioning of the assembled elements is carried out taking into account the elongation obtained by elastic deformation, the elongation or shrinkage obtained by thermal expansion/contraction, and the tolerances of the machining and/or sintering dimensions and/or rectification of the cap.
  • the total elongation obtained is the sum of the elongation obtained by elastic deformation ⁇ d and the elongation obtained by thermal deformation ⁇ dt, and it is designed to be greater than the sum of the tolerances of the assembly dimensions between the cap and the first part of the cover.
  • thermal expansion makes it possible to dimension the corresponding assembly and attachment members so as to allow assembly by heating the cap while preventing disassembly at room temperature.
  • the figure 4 and 5 thus represent, according to a first example of the second variant embodiment, a cap 13c assembled on a first part 13 by means of attachment and assembly members of different geometry from the embodiment of the figure 2 and 3 .
  • the first part 13 comprises an upper surface comprising a recessed central part between two side surfaces 54 extending longitudinally. These two side surfaces 54 are interconnected by two transverse beams 53 arranged close to the two longitudinal ends of the first part 13. The two side surfaces extend slightly beyond these transverse beams 53 at the ends of the first part 13, forming side stretchers 54.
  • the cap 13c comprises two transverse recesses 43 at its lower surface, adapted to collaborate with the two transverse beams 53 of the first part 13.
  • the first part 13 is made of 904L stainless steel with an initial length of 21 mm with a distance between the transverse beams 53 of 16 mm, at ambient temperature. It is heated to the assembly temperature of 400° C., which makes it possible to obtain an additional elongation between the transverse beams 53 of 0.11 mm.
  • the cap 13c is kept at ambient temperature.
  • the cap 13c is thus positioned on the first preheated part 13, then elastically deformed as mentioned previously, to allow its clipping onto the first part, by cooperation of its assembly members formed by the two transverse recesses 43 on the corresponding attachment members of the first part formed by the two transverse beams 53.
  • the sides 43a of the transverse recesses 43 of the cap 13c come to rest on the sides 53a of the transverse beams 53 of the first part 13 , ensuring that the cap 13c is held on the first part 13.
  • the transverse beams 53 are separated from each other by the expansion of the first part 13, so as to allow the removal of the cap 13c in its position. deformed by applying pressure to the center of the cap.
  • the cap is kept at room temperature or cooled.
  • the wafer is ground and a retaining undercut is arranged on the first part 13 and/or on the cap 13c.
  • the sides 43a of the transverse recesses 43 and/or the sides 53a of the transverse beams 53 comprise snap-fastening means for snapping the edges of the cap 13c with the first part 13.
  • These snap-fastening means can for example be presented in the form of a dovetail, or a tongue and groove, or one or more lug(s) with corresponding recesses, etc.
  • the cap 13c further comprises a lateral groove adapted to also snap the edges of the cap 13c with the first part 13.
  • the figure 6 and 7 represent a second exemplary embodiment according to the second variant embodiment, for which a cap 13c is assembled on a first part 13 by means of hooking and assembly members of different geometry from the previous embodiments.
  • the first part 13 comprises an upper surface comprising a recessed central portion, forming a housing for a cap 13c, of way similar to the realization visible on the figure 1 .
  • the attachment and assembly members are arranged transversely, and not longitudinally.
  • attachment members 50, 50' are arranged in the lateral vertical flanks 134, 135 bordering the recessed central portion of the first part 13, in the form of snap-fastening elements.
  • the cap 13c comprises corresponding assembly members, arranged in the form of snap-fastening element 40, 40' arranged on its lateral flank.
  • latching elements can for example take the form of lugs associated with a recess or a groove. They are sized according to the constituent material in order to resist the stresses undergone by the clasp.
  • the first part 13 can be made of 21 mm 904L stainless steel, be heated to an assembly temperature of 400° C., which induces a lateral expansion of 0.06 mm.
  • the first part 13 is elastically deformed in order to separate the first and second walls and allow the positioning of the cap 13c, so as to make the attachment members 50, 50' of the first part correspond with the assembly members 40 , 40' from the fairing.
  • the assembly is then cooled.
  • the hooking members 50, 50' of the first part and the assembly members 40, 40' of the cap are nested, ensuring that the cap 13c is held on the cover, even in the event of deformation.
  • By specifically heating the first part 13 again to the assembly temperature it is possible to remove the cap 13c.
  • This example illustrates that the invention can be implemented on the basis of a second elastically deformable part, instead of the cap in the other embodiments described.
  • the cap 13c could also comprise two flanges at its longitudinal distal ends, arranged to cover the distal ends of the upper surface of the first part 13.
  • these flanges would be held on the cover by clipping, as described above in the context of the first embodiment. More generally, the preceding variant embodiments can of course be combined.
  • the concept can be implemented with any cap and first part having a difference in behavior to thermal expansion between them.
  • the invention is not limited to the examples and variant embodiments described.
  • any other number of attachment members of the first part and of assembly members of the cap is possible.
  • These bodies can also be in another form, and at a different position.
  • these members may be in the form of a hook and/or a notch and/or a recess and/or a groove and/or a lug and/or a beam .
  • the cap could take any other shape, and any other positioning on the first part, not necessarily centered. It may be in another geometry, inducing its possible deformation by pressure in a direction other than the vertical direction described.
  • the first part could have a geometry allowing its elastic deformation.
  • the invention applies to any embodiment involving elastic deformation of the cap and/or of the first part.
  • the invention has been described in the context of a clasp cover.
  • the same concept can be integrated into any other watch exterior component, for example a middle part or a bracelet link.
  • the invention also relates to a bracelet, characterized in that it comprises a clasp cover as described above or a clasp as described above.
  • the invention also relates to a wristwatch comprising such a wristband or more generally at least one horological component as described previously.
  • the invention also relates to a method of manufacturing a timepiece component, characterized in that it comprises a step of fixing a cap 13c to a first part 13 of the timepiece component by elastically deforming the cap 13c from a position rest to a deformed position and/or by elastically deforming the first part 13 from a rest position to a deformed position.
  • This method may include a prior step of heating and/or cooling at least the cap 13c and/or the first part 13, down to an assembly temperature.
  • the step of fixing the cap 13c on the first part 13 can comprise a sub-step of positioning the cap 13c on the first part 13 then a sub-step of applying a vertical force substantially to the center of the cap 13c to deform it from a rest position to a deformed position in which the assembly members of the cap 13c are able to come into cooperation with the attachment members of the first part 13.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adornments (AREA)
  • Electromechanical Clocks (AREA)
  • Connection Of Plates (AREA)
EP20191466.0A 2020-08-18 2020-08-18 Uhrkomponente, die mit einer kappe ausgestattet ist Active EP3957206B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20191466.0A EP3957206B1 (de) 2020-08-18 2020-08-18 Uhrkomponente, die mit einer kappe ausgestattet ist
US17/401,540 US11638467B2 (en) 2020-08-18 2021-08-13 Timepiece component provided with a cap
JP2021132624A JP2022034543A (ja) 2020-08-18 2021-08-17 キャップを備えた時計コンポーネント
CN202110948489.5A CN114073360A (zh) 2020-08-18 2021-08-18 设置有盖体的钟表组件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20191466.0A EP3957206B1 (de) 2020-08-18 2020-08-18 Uhrkomponente, die mit einer kappe ausgestattet ist

Publications (2)

Publication Number Publication Date
EP3957206A1 true EP3957206A1 (de) 2022-02-23
EP3957206B1 EP3957206B1 (de) 2024-04-24

Family

ID=72145257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20191466.0A Active EP3957206B1 (de) 2020-08-18 2020-08-18 Uhrkomponente, die mit einer kappe ausgestattet ist

Country Status (4)

Country Link
US (1) US11638467B2 (de)
EP (1) EP3957206B1 (de)
JP (1) JP2022034543A (de)
CN (1) CN114073360A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609962A (en) * 1970-01-23 1971-10-05 Kurt A Rieth Link for a buckle,watch bracelet,watch strap or similar article
GB2132680A (en) * 1982-12-28 1984-07-11 Citizen Watch Co Ltd Clasp for ornaments
JP2002191415A (ja) * 2000-12-26 2002-07-09 Citizen Watch Co Ltd 中留のカバー部材構造

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446068A (en) * 1946-12-27 1948-07-27 Kestenman Bros Mfg Co Clasp for wrist-watch bracelets and other linkages
CH473549A (fr) * 1967-01-06 1969-06-15 Omega Brandt & Freres Sa Louis Fermoir pour bracelet
FR2612747B1 (fr) * 1987-03-23 1989-06-09 Rado Montres Sa Bracelet comportant une ame souple
DE19906127C2 (de) * 1999-02-13 2002-09-26 Rowi Rodi & Wienenberger Gmbh Dehnbares Armband, insbesondere Uhrarmband
US20090238045A1 (en) * 2008-03-21 2009-09-24 Arthur Felton Ac's wristwatch ez-wear protective clip-on/cover
EP3957205A1 (de) * 2020-08-18 2022-02-23 Rolex Sa Uhrkomponente, die mit einer kappe ausgestattet ist

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609962A (en) * 1970-01-23 1971-10-05 Kurt A Rieth Link for a buckle,watch bracelet,watch strap or similar article
GB2132680A (en) * 1982-12-28 1984-07-11 Citizen Watch Co Ltd Clasp for ornaments
JP2002191415A (ja) * 2000-12-26 2002-07-09 Citizen Watch Co Ltd 中留のカバー部材構造

Also Published As

Publication number Publication date
CN114073360A (zh) 2022-02-22
EP3957206B1 (de) 2024-04-24
US11638467B2 (en) 2023-05-02
US20220053891A1 (en) 2022-02-24
JP2022034543A (ja) 2022-03-03

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