EP3627234A1 - Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement - Google Patents

Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement Download PDF

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Publication number
EP3627234A1
EP3627234A1 EP18196009.7A EP18196009A EP3627234A1 EP 3627234 A1 EP3627234 A1 EP 3627234A1 EP 18196009 A EP18196009 A EP 18196009A EP 3627234 A1 EP3627234 A1 EP 3627234A1
Authority
EP
European Patent Office
Prior art keywords
holding member
elastic
support element
assembly
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18196009.7A
Other languages
English (en)
French (fr)
Inventor
Ivan Hernandez
Pierre Cusin
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox 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 Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP18196009.7A priority Critical patent/EP3627234A1/de
Priority to PCT/EP2019/073236 priority patent/WO2020057944A1/fr
Priority to EP19759404.7A priority patent/EP3853671B1/de
Priority to JP2021513843A priority patent/JP7084549B2/ja
Priority to CN201980061795.8A priority patent/CN112740115B/zh
Priority to US17/273,834 priority patent/US11921461B2/en
Publication of EP3627234A1 publication Critical patent/EP3627234A1/de
Withdrawn legal-status Critical Current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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G04B17/345—Details of the spiral roll
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G04B13/022—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft with parts made of hard material, e.g. silicon, diamond, sapphire, quartz and the like
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton

Definitions

  • the invention relates to an elastic holding member for fixing a timepiece component to a support element.
  • the invention also relates to an elastic retaining member - timepiece component assembly and an assembly of such an assembly with the support element.
  • the invention also relates to a method for producing such an assembly.
  • the invention further relates to a timepiece movement comprising at least one such assembly.
  • the invention finally relates to a timepiece comprising such a movement.
  • elastic retaining members such as clockwork ferrules which participate in assemblies of balance springs on balance shafts in a clockwork movement and this, by elastic clamping.
  • the purpose of the present invention is to overcome all or part of the drawbacks mentioned above by proposing an elastic holding member which has a high holding torque in particular to facilitate / simplify the assembly operations of an assembly of a member assembly.
  • the invention relates to an elastic holding member for fixing a timepiece component to a support element, comprising an opening into which said support element is capable of being inserted, the holding comprising rigid arms and elastic arms helping to ensure elastic clamping of the support element in the opening, each rigid arm being provided with two flat contact zones of the holding member capable of cooperating with contact portions corresponding convex of the support member.
  • the invention also relates to an elastic retaining member - timepiece component assembly for a timepiece movement of a timepiece comprising such a retaining member.
  • the assembly is in one piece.
  • the invention also relates to an assembly for a timepiece movement of a timepiece comprising a resilient holding member - timepiece component assembly, said assembly being fixed to a support element.
  • the invention further relates to a timepiece movement comprising at least one such assembly.
  • the invention also relates to a timepiece comprising such a timepiece movement.
  • the elastic holding member is then able to withstand a substantial elastic tightening and therefore to store a large amount of elastic energy when it is constrained in order to restore a large holding torque, in particular thanks to a significant rigidity of this elastic holding member induced in particular by volumes (or quantities) of substantial material constituting its rigid arms which include the internal and external structures. It will be noted that these large volumes of material are more precisely included in the contact zones 8 which are placed under loads (or under stresses) during the insertion of the support element into this holding member.
  • this elastic holding member is configured so that this storage of elastic energy leads to stresses which remain admissible stresses with regard to the material which constitutes such a holding member such as silicon.
  • the contact areas 8 have a flat surface which allows them to achieve with the contact portions a contact configuration of the plano-convex type thus helping to avoid / prevent any damage to the holding member 1 by the appearance of cracks or cracks.
  • the invention also relates to an elastic holding member assembly - timepiece component for a timepiece movement of a timepiece comprising such an elastic holding member.
  • this assembly is in one piece.
  • the invention also relates to an assembly for a timepiece movement of a timepiece comprising such an assembly of elastic holding member - timepiece component fixed to a support element.
  • the invention further relates to the timepiece movement comprising at least one such assembly.
  • the invention also relates to the timepiece comprising such a timepiece movement.
  • the invention also relates to a method for producing such an assembly.
  • the figures 1 to 4 present an embodiment of the elastic retaining member 1 for fixing a timepiece component 2 to a support element 3.
  • the elastic retaining member 1 can be a ferrule for the fixing the timepiece component 2 such as a balance spring to a support element 3 such as a balance shaft.
  • this holding member 1 can be included in a set 120 of elastic holding member - timepiece component visible on the figure 5 and which is intended to be arranged in a timepiece movement 110 of a timepiece 100.
  • Such an assembly 120 may be a single piece made of a material called "fragile" preferably a micro-machinable material.
  • a material can include silicon, quartz, corundum or even ceramic.
  • the elastic holding member 1 can be made of such a material called "fragile", the timepiece component 2 then being made of another material.
  • This assembly 120 may be part of an assembly 130 for the watch movement 110, by being fixed to the support element 3 for example by elastic tightening. It will be noted that this assembly 130 has been devised for applications in the watchmaking field. However, the invention can perfectly be implemented in other fields such as aeronautics, jewelry, or even the automobile.
  • Such a holding member 1 comprises an upper face and a lower face 12 preferably planes included respectively in first and second planes P1 and P2 visible on the figure 2 , as well as external and internal structures 4a, 4b.
  • These external and internal structures 4a, 4b respectively comprise external and internal peripheral walls of this holding member 1 and have different shapes. More specifically, with regard to the external structure 4a, it may have a generally hexagonal shape, in particular comprising parts having convex shapes. Each of these parts is included in a connection zone 9 connecting an elastic arm 7 to a rigid arm 6.
  • This external structure 4a is in particular intended to be connected to the timepiece component 2 via at least one point d 'fastener 11 arranged in the outer peripheral wall of the holding member 1.
  • This internal structure 4b which comprises the internal peripheral wall of this holding member 1, participates in defining an opening 5 of such a holding member 1 in which is intended to be inserted the support element 3.
  • This opening 5 defines a volume in the holding member 1 which is less than that of a connecting part of one end of the support element 3 which is intended to be arranged there.
  • this connecting part has a circular cross section and includes all or part of the convex contact portions 10 defined on the peripheral wall 13 of the support element 3.
  • this support element 3 has a radius of curvature R1 visible on the figure 1 .
  • the inner faces of the elastic arms 7 are essentially flat and the inner faces of the rigid arms 6 are non-planar, for example being wholly or partly substantially wavy.
  • the inner face of each rigid arm 6 comprises a substantially hollow or substantially concave part in which are included two contact zones 8. These two contact zones 8 are able to cooperate with the corresponding contact portions 10 of the support element 3.
  • Such contact zones 8 are defined in the inner face, in particular in a concave part of this inner face, extending substantially over all or part of the thickness of the holding member. 1.
  • these contact zones 8 are flat, each comprising a surface which is wholly or partly planar.
  • the two contact zones 8 of each rigid arm 8 otherwise called flat contact zones 8, are respectively included in different planes together forming an obtuse angle. These two contact areas 8 of each rigid arm are separated by being spaced from one another.
  • the inner face includes a separation zone 18 of two contact zones 8 of each rigid arm 6 visible on the figures 4 and 7 .
  • This connection zone 18 comprises two ends which define with the central axis C an angle ⁇ of between approximately 1 and 9 degrees and which can preferably be 2 degrees.
  • the contact zones 8 they each comprise two ends which define with the central axis C an angle ⁇ of between approximately 1 and 15 degrees, and which may preferably be 10 degrees.
  • the contact zones 8 of the rigid arms 6 are provided in particular for cooperating with the contact portions 10 in a contact configuration of the plano-convex type in which configuration where the planar surface of each contact zone 8 cooperates with the contact portion 10 corresponding convex shape of the support element 3.
  • this convex shape of each contact portion 10 is appreciated relative to the flat surface of each contact area 8 corresponding to which this portion 10 is arranged.
  • this planar surface of each contact area 8 forms a plane tangent to the diameter of the support element. In other words, the planar surface is perpendicular to the diameter and therefore to the radius R1 of the support element.
  • each rigid arm 6 makes it possible to make contact pressure between the holding member 1 and the support element 3 during the production of a mechanical connection between them, while considerably reducing the intensity of the stresses at these contact zones 8 and the corresponding contact portions 10 of the support element 3 during assembly and / or the fixing of this holding member 1 with the support element 3, which stresses being liable to damage the holding member 1 by the appearance of cracks / breaks or even cracks.
  • the two contact zones 8 of each rigid arm 6 are planar and therefore do not have radii of curvature R 2 .
  • Such contact zones 8 are able to cooperate with the corresponding contact portions 10 of the support element 3 in the contact configuration of the plano-convex type.
  • the contact pressure defined by the Hertz pressure equation is lower than that relating to the contact configurations of the convex-convex type during which the contact zone 8 which then has a radius of curvature R 2 is able to cooperate with the corresponding contact portion 10 of the support element 3.
  • This contact pressure present during the contact configuration of the plano-convex type is lower than those used in the other configurations described above in particular due to the higher value in this context of the relative radius of curvature R resulting from the absence of a radius of curvature for each flat contact area 8 of the holding member 1 of this embodiment.
  • the contact pressure is lower than those of these other contact configurations by at least 40%.
  • the rigid and elastic arms 6, 7 connect the external and internal structures 4a, 4b to each other, moreover each comprising a part of these external and internal structures 4a, 4b.
  • these rigid and elastic arms 6, 7 essentially allow a fixing of the elastic tightening type of the support element 3 to be made in the opening 5 made in this holding member 1 which is defined by the structure internal 4b and in particular by the internal peripheral wall of this holding member 1.
  • these rigid arms 6 therefore comprise the only contact zones 8 of the holding member 1 with the support element 3 which can be defined in all or part of the interior faces of these rigid arms 6
  • the two contact zones 8 of each rigid arm 6, otherwise called “contact interfaces”, are each provided to cooperate with a peripheral wall 13 of the connection part of the support element 3 in particular with the contact portions 10 corresponding defined in this peripheral wall 13 of the support element 3.
  • the holding member 1 then comprises six contact zones 8 which participate in achieving a precise centering of the timepiece component 2, for example a hairspring, in the timepiece movement 110.
  • each rigid arm 6 has a volume of material which is substantially greater than or strictly greater than the volume of material constituting each elastic arm 7.
  • the external and internal structures 4a, 4b, and in in particular the internal and external peripheral walls are separated from each other in this holding member 1 by a variable distance E which then changes depending on whether these structures are included for example in a rigid arm 6 or even an elastic arm 7
  • this difference E is a maximum difference E1 when it is defined between parts of internal and external peripheral walls included in each rigid arm 6, ie the maximum difference E1 present between the interior and exterior faces of this rigid arm 6.
  • this maximum deviation E1 is defined between a part of the inner face adjoining the substantially hollow part in which are included ux contact zones 8 of each rigid arm 6 and an opposite part of the external peripheral wall of this rigid arm 6.
  • this difference E is a minimum difference E2 when it is defined between parts of the external and internal peripheral walls included in the elastic arms 7, ie the minimum distance E2 present between the inner and outer faces of this elastic arm 7.
  • Such a configuration of the rigid and elastic arms 6, 7 allows the holding member 1 to store a greater amount of elastic energy for the same tightening in comparison with the holding members of the prior art. Such a quantity of elastic energy stored in the holding member 1 then makes it possible to obtain a greater holding torque of the holding member on the support element 3 in the assembly 130 of the assembly 120 member holding - timepiece component with this support element 3.
  • such a configuration of the holding member 1 makes it possible to store elastic energy ratios which are 6 to 8 times greater than those of state of the art maintenance bodies.
  • each elastic arm 7 in the holding member 1 allows, during tightening insertion, a deformation of each elastic arm 7 making it possible to accommodate the deformation of the whole of the organ holding 1 with the geometry of the connecting part of the support element 3 on which it is assembled.
  • the mode of deformation that each elastic arm undergoes is a toroidal torsion coupled to a radial expansion.
  • the invention also relates to a method of producing the assembly 130 of the assembly 120 elastic holding member - timepiece component with the support element 3.
  • This method comprises a step 13 of inserting the support element 3 in the opening 5 of the holding member 1.
  • the end of the support element is presented at the entrance to the opening 5 defined in the lower face 12 of the holding member 1 in anticipation of the introduction of the connecting part of this support element 3 into the volume defined in this opening 5.
  • This step 13 comprises a sub-step of elastic deformation 14 of the holding member 1 in particular of a central zone of this holding member 1 comprising said opening 5 resulting from the application of a contact force on the contact zones 8 of the rigid arms 6 by the contact portions 10 of the peripheral wall 13 of the connecting part of the element of support 3.
  • This elastic deformation of the central zone in fact generates a deformation of the lower face 12 of the holding member 1 which then has an essentially concave shape in particular at a part of this face 12 included in the central zone of the holding member 1.
  • this lower face 12 is no longer flat and is therefore no longer entirely included in the second plane P2.
  • this elastic deformation of the holding member 1 results from the application of the contact force on the contact zones 8 of the rigid arms 6 by the contact portions 10 of the peripheral wall 13 of the support element 3.
  • Such a deformation sub-step 14 comprises a displacement phase 15 of the rigid arms 6 under the action of the contact force which is applied to them.
  • Such displacement of the rigid arms 6 is carried out in a direction between a radial direction B1 relative to a central axis C common to the support element 3 and to the holding member 1, and a direction B2 coincides with this axis central C.
  • this direction B2 is perpendicular to the direction B1 and is oriented in a defined direction from the lower face 12 towards the upper face.
  • the contact force is preferably perpendicular or substantially perpendicular to said contact area 8.
  • each elastic arm 7 is driven at its two ends in the same direction of rotation B4 by the rigid arms 6 in movement, to which arm 6 of such ends are connected.
  • Only a part of the body of these elastic arms 7 is torsionally deformable here the ends of these arms 7.
  • Such a first deformation contributes in particular to improving the insertion of the support element 3 into the opening 5 of the holding member 1 by helping to avoid any breakage of the holding member 1 and / or any appearance of a crack in this member 1 during its assembly with the support element 3.
  • each elastic arm 7 is pulled at its two ends in the longitudinal direction B3 in opposite directions by the rigid arms 6 in movement, to which arms 6 of such ends are connected.
  • Such a second deformation contributes in particular to the fact that the holding member 1 stores a large amount of elastic energy.
  • This double elastic deformation of the elastic arms 7 can be carried out simultaneously or substantially simultaneously, or alternatively or successively.
  • the first deformation can then be carried out before the second deformation.
  • This method then comprises a step of fixing 16 of the holding member 1 on the reinforcing element 3.
  • a fixing step 16 comprises a substep of making 17 of a radial elastic tightening of the holding member 1 on the support element 3. It is therefore understood that in such a state of stress, the holding member 1 stores a large amount of elastic energy which contributes to giving it a substantial holding torque, in particular allowing optimal turning by elastic tightening.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Springs (AREA)
  • Electric Clocks (AREA)
EP18196009.7A 2018-09-21 2018-09-21 Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement Withdrawn EP3627234A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP18196009.7A EP3627234A1 (de) 2018-09-21 2018-09-21 Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
PCT/EP2019/073236 WO2020057944A1 (fr) 2018-09-21 2019-08-30 Organe de maintien élastique pour la fixation d'un composant d'horlogerie sur un élément de support
EP19759404.7A EP3853671B1 (de) 2018-09-21 2019-08-30 Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
JP2021513843A JP7084549B2 (ja) 2018-09-21 2019-08-30 支持要素に計時器構成要素を固定するための弾性保持部材
CN201980061795.8A CN112740115B (zh) 2018-09-21 2019-08-30 用于将时计部件固定在支撑元件上的弹性保持构件
US17/273,834 US11921461B2 (en) 2018-09-21 2019-08-30 Elastic retaining member for fixing a timepiece component on a support element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18196009.7A EP3627234A1 (de) 2018-09-21 2018-09-21 Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement

Publications (1)

Publication Number Publication Date
EP3627234A1 true EP3627234A1 (de) 2020-03-25

Family

ID=63678508

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18196009.7A Withdrawn EP3627234A1 (de) 2018-09-21 2018-09-21 Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
EP19759404.7A Active EP3853671B1 (de) 2018-09-21 2019-08-30 Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19759404.7A Active EP3853671B1 (de) 2018-09-21 2019-08-30 Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement

Country Status (5)

Country Link
US (1) US11921461B2 (de)
EP (2) EP3627234A1 (de)
JP (1) JP7084549B2 (de)
CN (1) CN112740115B (de)
WO (1) WO2020057944A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011116486A1 (fr) * 2010-03-25 2011-09-29 Rolex S.A. Virole fendue à ouverture non circulaire
WO2013045706A2 (fr) * 2011-09-29 2013-04-04 Rolex S.A. Ensemble monolithique ressort spiral-virole
EP2755093A2 (de) * 2013-01-14 2014-07-16 Master Dynamic Limited Elastische Entspannungsstruktur einer Haarfederspannbüchse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1584994B1 (de) 2004-04-06 2009-01-21 Nivarox-FAR S.A. Spiralrolle ohne Deformation des Fixierungsradius der Spiralfeder und Herstellungsverfahren derartige Spiralrolle
CH701075B1 (fr) * 2007-03-02 2010-11-30 Richemont Int Sa Ensemble formé d'une roue et de son axe et roue pour un tel ensemble.
JP6118037B2 (ja) 2012-05-08 2017-04-19 セイコーインスツル株式会社 ひげ玉、てんぷおよび時計
EP2796940A3 (de) * 2013-04-23 2016-05-04 Rolex Sa Uhrkomponente zur Aufnahme eines Organs durch Einpressen
EP2876504B1 (de) 2013-11-20 2017-07-26 ETA SA Manufacture Horlogère Suisse Schraubenloser Spiralklötzchen-Träger für Uhr
EP3098669A1 (de) 2014-03-05 2016-11-30 Nivarox-FAR S.A. Spirale, die mit einer federscheibe gesichert werden muss

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011116486A1 (fr) * 2010-03-25 2011-09-29 Rolex S.A. Virole fendue à ouverture non circulaire
WO2013045706A2 (fr) * 2011-09-29 2013-04-04 Rolex S.A. Ensemble monolithique ressort spiral-virole
EP2755093A2 (de) * 2013-01-14 2014-07-16 Master Dynamic Limited Elastische Entspannungsstruktur einer Haarfederspannbüchse

Also Published As

Publication number Publication date
EP3853671A1 (de) 2021-07-28
US20210325829A1 (en) 2021-10-21
CN112740115A (zh) 2021-04-30
EP3853671B1 (de) 2022-08-03
JP2022500639A (ja) 2022-01-04
CN112740115B (zh) 2022-06-14
JP7084549B2 (ja) 2022-06-14
WO2020057944A1 (fr) 2020-03-26
US11921461B2 (en) 2024-03-05

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