EP3432081B1 - Uhreneinheit - Google Patents

Uhreneinheit Download PDF

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Publication number
EP3432081B1
EP3432081B1 EP18183697.4A EP18183697A EP3432081B1 EP 3432081 B1 EP3432081 B1 EP 3432081B1 EP 18183697 A EP18183697 A EP 18183697A EP 3432081 B1 EP3432081 B1 EP 3432081B1
Authority
EP
European Patent Office
Prior art keywords
component
arbor
timepiece
positioning surface
angular orientation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18183697.4A
Other languages
English (en)
French (fr)
Other versions
EP3432081A1 (de
Inventor
Marc GUILLAUME
Olivier Karlen
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.)
Richemont International SA
Original Assignee
Richemont International 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 Richemont International SA filed Critical Richemont International SA
Publication of EP3432081A1 publication Critical patent/EP3432081A1/de
Application granted granted Critical
Publication of EP3432081B1 publication Critical patent/EP3432081B1/de
Active legal-status Critical Current
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
    • 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
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction
    • 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
    • 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

Definitions

  • the present invention relates to the field of watchmaking. It relates, more particularly, to a timepiece assembly comprising a timepiece component fixed on an axis.
  • This fixing method is perfectly suited for metal or polymer components which are relatively elastic and can undergo plastic deformation without breaking.
  • brittle materials have become common in watchmaking. These materials have little or no plastic area and are therefore extremely fragile. As such, hard steels, ceramics, glasses, vitroceramics, mono- or polycrystalline silicon, amorphous silicon, nitride oxides or silicon carbides under any crystalline regime, alumina, synthetic diamond and the like.
  • WO2011 / 116486 describes a split ferrule comprising two elastic tongues which constrain and position the axis against a substantially rigid positioning surface when the axis is driven into the reception zone defined by the tongues and the positioning surface.
  • the document CH306 105 discloses a system for attaching a shaft to a wheel, said system providing an intermediate component such as a washer.
  • the object of the invention is therefore to propose a timepiece component in which the above-mentioned faults are at least partially overcome.
  • the invention relates to a timepiece assembly as defined by claim 1.
  • This set includes a timepiece component such as a wheel, an anchor, a hairspring, a plate or the like, fixed on an axis which extends in an axial direction.
  • Said component comprises a reception zone delimited by at least one positioning surface as well as at least two holding surfaces, at least one of which is displaceable against a restoring force in order to clamp said section against said surface positioning.
  • These holding surfaces can be, for example, formed by fingers, tongues or the like.
  • the axis comprises a section of non-circular cross-section (that is to say has a shape other than circular considered in a plane making a non-zero angle, in particular perpendicular, to said axial direction), this section and said receiving zone (in particular the positioning surface as well as the holding surfaces) being shaped so as to allow the insertion of the axis substantially without driving in said axial direction when the axis and the component are mutually oriented in a first relative angular orientation, and in clamping said axis against said positioning surface when they have a second relative angular orientation, distinct from said first.
  • the component can thus be secured on the axis by a rotary clipping instead of a drive.
  • Conventional flushing involves significant friction between the component and the axis during this operation, which is accompanied by a risk of wear of the component and / or the axis.
  • a clipping by rotation as defined above involves less friction, and therefore reduced wear.
  • the section of the axis is non-circular, the angular alignment of the axis and of the component can be substantially perfect and therefore does not require any manual adjustment on the part of a watchmaker.
  • said retaining surfaces are each carried by a corresponding arm, at least one of which is elastic.
  • said elastic arms partially surround said axis and are preferably folded inwards.
  • the arms can thus act as shockproof to absorb shocks in certain directions.
  • said positioning surface is carried by an element which is substantially rigid and thus provides a stable reference for the positioning of the component relative to the axis.
  • said section comprises at least one flat intended to cooperate with one of said surfaces, preferably with said positioning surface. Indexing of the axis relative to the component is thus ensured without requiring manual adjustment by a watchmaker. Consequently, the indexing of a balance plate with a spiral spring, for example, can be ensured in this way.
  • said section has a height parallel to said axial direction which is between 100% and 120%, preferably between 101% and 115%, of the thickness of said component considered in the same direction. If the section is machined in a cylindrical portion of the axis, the edges of the section can act as shoulders to position the component along the axis
  • the axis carries a locking element arranged to pass through said receiving zone when the axis and the component are oriented in said first relative angular orientation and to lock said component axially on said axis when the axis and the component are oriented according to said second relative angular orientation. The axial locking of the component on the axis is thus ensured, regardless of the shape and the length of the section.
  • This locking element advantageously has at least one lug arranged to lock said component axially on said axis when the axis and the component are oriented according to said second relative angular orientation.
  • a substantially polygonal shape whose vertices constitute said lugs is particularly suitable for this function.
  • said component is a spiral spring (the reception area of which is defined by its ferrule or by its piton holder), a balance, a wheel, an anchor, or a balance plate.
  • This assembly can, of course, be incorporated into a watch movement, which can in turn be integrated into a timepiece.
  • the component is clipped onto the section of the axis, which implies a reduction in the friction exerted between these two elements in comparison with a conventional drive-out as well as reduced wear, for the reasons mentioned above. Furthermore, these two elements are thus automatically indexed without requiring manual adjustment.
  • FIGS. 1 and 2 represent a first embodiment of a timepiece assembly 1 according to the invention, seen in partial section.
  • This assembly includes a timepiece component 3, which is shown here as a one-piece anchor assembled to an axis 5 of which only the section which cooperates with the anchor is shown.
  • This section is represented by a section 7 of non-circular cross section which extends along at least part of the axis. Said non-circular shape is considered in a plane substantially perpendicular to the axis 5, and is, for example, at least partially polygonal.
  • the latter can be fixed or mobile in rotation, can be any tree or a similar structure such as for example a peak in the form of a tree.
  • the timepiece component 3 comprises a hollow receiving area 9 arranged to receive and tighten the axis 5.
  • This area 9 is delimited on the one hand by a positioning surface 11 and on the other hand by at least two holding surfaces 13 which are subjected to an elastic restoring force.
  • the holding surfaces 13 are carried by elastic arms 15 which extend from the body of the component 3, and the positioning surface 11 is substantially rigid (that is to say having a rigidity such as deformations elastic in the operating position does not substantially disturb the function of the component 3).
  • the positioning surface is substantially non-displaceable.
  • the reception area 9 and the shape of the section 7 are complementary and have a relationship such that, in a first relative angular orientation of these two elements, the axis 5 can be inserted in the area 9 in an axial direction.
  • This relationship is illustrated on the figure 1 in solid lines and shows that there is enough play so that the section 7 does not come into contact with the timepiece component 3 when it is inserted into said zone in a direction parallel to the axis 5.
  • a slight contact between the axis 5 and the two surfaces 11, 13 may be allowed.
  • the periphery of the section 7 abuts against the retaining surfaces 13, which are moved against the restoring force provided by the elastic arms 15.
  • the angular relationship between these components is illustrated on the figure 1 in dotted lines, in which a corner of the section 7 is in contact with the positioning surface 11 (this contact being represented here by an overlap between the axis 3 and the holding surfaces 13).
  • the positioning surface 11 may include a notch 17 which allows a corner of the section 7 to enter there during rotation. The movement of the holding surfaces 13 and also the stresses generated in the arms 15, can thus be limited.
  • the axis 5 adopts a stable position in a second relative angular orientation illustrated in the figure 2 , this angular orientation being distinct from the first angular orientation mentioned above.
  • the retaining surfaces 13 have been raised by the shape of the section and the elastic arms 15 are thus constrained (solid lines; the initial position of the elastic arms 15 is illustrated in dotted lines), and tighten the section 7 against the positioning surface 11.
  • the section has a shape comprising a flat 7a which is positioned against the positioning surface 11 (which is also flat except for the notch 17) in the service position, as well as two corners 7b rounded arranged to be in contact with the holding surfaces 13.
  • the flat 7a is connected to the rounded corners 7b by planar surfaces.
  • the illustrated embodiment should not be considered as limiting.
  • the section has angular, curved, polygonal, oval, irregular shapes and any combination of these.
  • the holding surfaces 13 can take the form of necklaces, fingers, tongues or any other suitable shape.
  • the elastic restoring force for these surfaces it can be provided by elastic elements of any kind which are integral with said surfaces 13 or which are constituted by additional elements brought to the component 3.
  • the positioning surface can be curved, angular, irregular or any other suitable shape. Indeed, any combination of shapes of the surfaces 11, 13 and of the section 7 which allow a stable tight angular position as well as an angular position which allows the axis 5 to enter the receiving zone 9, substantially without displacement of the surfaces of holding 13, suitable for implementing the invention.
  • the axial retention of the component 3 on the axis 5 can be carried out using the edges of the section 7 as axial stops in the case where the shape of the section 5 is machined in the body of a cylindrical axis.
  • the section 7 does not extend all along the axis 5 but occupies a length lying between 100% and 120%, preferably between 101 and 115% of the thickness of the component 3.
  • the figures 3 and 4 illustrate a variant in which larger axial stops are present.
  • component 3 is a wheel.
  • the axis 5 has a conventional shoulder 19, located on one side of the component. On the other side is a locking element 21, which has a triangular shape in the variant illustrated. The shoulder 19 and the locking element 21 are thus linked to each other by said section.
  • the locking element is shaped to enter the receiving zone 9 when the axis 5 is in the first angular orientation mentioned above with respect to the component 3.
  • the axis 5 can thus be inserted in the receiving zone 9 with play and the component 3 can be adjusted against the shoulder 19.
  • the section 7 of the axis 5 is tightened as described above.
  • the locking element 21 is also pivoted and the pins 21a, formed by the vertices of its triangular shape, abut against the component 3 and thus prevent its removal from the axis 5 when the latter is in said second orientation. angular with respect to the component 3.
  • the locking element 21 and the shoulder 19 thus block the component 3 axially on the axis 5.
  • other forms of locking element 21 are possible, for example forms comprising at least one lug 21a or a projecting projection arranged to form an axial stop when the axis 5 and the component 3 are in their second angular orientation.
  • the locking element By pivoting the axis 5 again relative to the component 3 so that they are again in their first angular orientation, the locking element can pass through the reception zone 9 and can be removed.
  • the angle between the first angular orientation and the second angular orientation is 60 ° but any suitable angle can be used.
  • the Figures 5 to 8 illustrate another variant of a timepiece assembly 1 according to the invention.
  • the timepiece component 3 is a spiral spring of which only the ferrule and the root 3a of the spring are illustrated.
  • the root 3a is substantially rigid and carries the positioning surface 11.
  • the elastic arms 15 extend symmetrically from the root 3a and partially surround the reception area 9. The latter are folded inwards in order to give them increased elasticity and to define the holding surfaces 13.
  • the elastic arms 15 and the root 3a thus form a ferrule allowing '' attach the hairspring to the balance axle 15.
  • the elastic arms 15 are raised and the section adopts the second relative angular orientation, which is a stable position illustrated in solid lines on the figure 7 as well as on the figure 8 .
  • the holding surfaces 13 of the elastic arms 15 thus clamp the section against the positioning surface 11 by means of a force provided by the elastic arms.
  • the locking element 21 axially blocks the spring on the axis 5 as described above.
  • the shape of the elastic arms 15 surrounding the axis 5 acts as shockproof for each direction in the plane of the component 3, except in the direction of the rigid root 3a. Indeed, in each other direction in the plane, the arms 15 can deform in response to a shock and cushion it. After this damping, the elastic arms 15 return the section 7 to its original position.
  • the section 7 always has at least one line of symmetry but it is also possible that its shape is irregular.
  • the elastic arms 15, which have been shown in symmetrical shapes, can also be different from one another and asymmetrical. Indeed, it is not important that the forces exerted by the holding surfaces are identical or are exerted symmetrically.
  • component 2 is made of brittle material as mentioned in the preamble, it also applies to components 3 of metal or of conventional polymer.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Clamps And Clips (AREA)
  • Electromechanical Clocks (AREA)

Claims (13)

  1. Uhreneinheit (1), die ein Uhrenbauteil (3) umfasst, das an einer Achse (5) befestigt ist, die sich gemäß einer axialen Richtung (Z) erstreckt, wobei das Bauteil (3) einen Aufnahmebereich (9) umfasst, der von mindestens einer Positionierfläche (11) sowie mindestens zwei Halteflächen (13) begrenzt wird, von denen mindestens eine gegen eine Rückstellkraft verschiebbar ist, und die eingerichtet sind, um die Achse (5) gegen die Positionierfläche (11) zu klemmen;
    dadurch gekennzeichnet, dass die Achse (5) einen Abschnitt (7) mit nicht kreisförmigem Querschnitt aufweist, wobei der Abschnitt (7) und der Aufnahmebereich (9) so gestaltet sind, dass sie das Einführen der Achse (5) gemäß der axialen Richtung erlauben, wenn die Achse und das Bauteil eine erste relative Winkelausrichtung einnehmen, sowie den Abschnitt (7) gegen die Positionierfläche (11) klemmen, wenn das Bauteil (3) und die Achse (5) eine zweite relative Winkelausrichtung, die unterschiedlich zur ersten Ausrichtung ist, einnehmen.
  2. Uhreneinheit (1) nach Anspruch 1, wobei die Halteflächen (13) je von einem entsprechenden Arm (15) getragen werden, von denen mindestens einer elastisch ist.
  3. Uhreneinheit (1) nach Anspruch 2, wobei die elastischen Arme (15) die Achse (5) teilweise umgeben.
  4. Uhreneinheit (1) nach Anspruch 2, wobei mindestens einer der elastischen Arme (15) nach innen gebogen ist.
  5. Uhreneinheit (1) nach einem der vorhergehenden Ansprüche, wobei die Positionierfläche (11) von einem Element (3, 3a) getragen wird, das im Wesentlichen unbiegsam ist.
  6. Uhreneinheit (1) nach einem der vorhergehenden Ansprüche, wobei der Abschnitt (7) mindestens eine Abflachung aufweist, die dazu bestimmt ist, mit einer der Flächen (11, 13) zusammenzuwirken, vorzugsweise mit der Positionierfläche (11).
  7. Uhreneinheit (1) nach dem vorhergehenden Anspruch, wobei der Abschnitt (7) eine Höhe parallel zur axialen Richtung (Z) aufweist, die zwischen 100% und 120%, vorzugsweise zwischen 101% und 115%, der Dicke des Bauteils (3) in der gleichen Richtung (Z) gesehen liegt.
  8. Uhreneinheit (1) nach einem der vorhergehenden Ansprüche, wobei die Achse (5) ein Verriegelungselement (21) trägt, das eingerichtet ist, um durch den Aufnahmebereich (9) hindurchgehen zu können, wenn die Achse (5) und das Bauteil (3) gemäß der ersten relativen Winkelausrichtung ausgerichtet sind, sowie um das Bauteil (3) axial auf der Achse (5) zu blockieren, wenn die Achse (5) und das Bauteil (3) gemäß der zweiten relativen Winkelausrichtung ausgerichtet sind.
  9. Uhreneinheit (1) nach dem vorhergehenden Anspruch, wobei das Verriegelungselement (21) mindestens einen Vorsprung (21a) aufweist, der eingerichtet ist, um das Bauteil axial auf der Achse zu blockieren, wenn die Achse und das Bauteil gemäß der zweiten relativen Winkelausrichtung ausgerichtet sind.
  10. Uhreneinheit (1) nach einem der vorhergehenden Ansprüche, wobei das Bauteil (3) ausgewählt wird unter einer Spiralfeder, einer Unruh, einem Rad, einem Anker und einer Unruhrolle.
  11. Uhrwerk, das eine Uhreneinheit (1) nach einem der Ansprüche 1 bis 8 umfasst.
  12. Uhr, die ein Uhrwerk nach Anspruch 11 umfasst.
  13. Verfahren zur Befestigung eines Uhrenbauteils (3) an einer Achse (5), um eine Uhreneinheit (1) zu bilden, das die folgenden Schritte umfasst:
    - Bereitstellen eines Uhrenbauteils (3), das einen Aufnahmebereich (9) umfasst, der von mindestens einer Positionierfläche (11) sowie mindestens zwei Halteflächen (13) begrenzt wird, die gegen eine Rückstellkraft verschiebbar und eingerichtet sind, um die Achse (5) gegen die Positionierfläche (11) zu klemmen;
    - Bereitstellen einer Achse (3), die sich gemäß einer axialen Richtung (Z) erstreckt und einen Abschnitt (7) umfasst, der einen nicht kreisförmigen Querschnitt aufweist, der eingerichtet ist, um mit den Halteflächen (13) sowie mit der Positionierfläche (11) zusammenzuwirken, wobei der Abschnitt (7) und der Aufnahmebereich (9) so gestaltet sind, dass sie die Einführung der Achse (5) gemäß der axialen Richtung (Z) erlauben, wenn die Achse (5) und das Bauteil (3) eine erste relative Winkelausrichtung einnehmen, sowie den Abschnitt (7) der Achse (5) gegen die Positionierfläche (11) klemmen, wenn das Bauteil (3) und die Achse (5) eine zweite relative Winkelausrichtung einnehmen;
    - Ausrichten der Achse (5) und des Bauteils (3) gemäß der ersten relativen Winkelausrichtung;
    - Einführen der Achse (5) in den Aufnahmebereich (9) gemäß einer Richtung parallel zur axialen Richtung (Z);
    - Schwenken der Achse (5) bezüglich des Bauteils (3), um letztere in die zweite relative Winkelausrichtung zu bringen.
EP18183697.4A 2017-07-18 2018-07-16 Uhreneinheit Active EP3432081B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00941/17A CH714000A1 (fr) 2017-07-18 2017-07-18 Ensemble horloger comprenant un composant horloger fixé sur un axe.

Publications (2)

Publication Number Publication Date
EP3432081A1 EP3432081A1 (de) 2019-01-23
EP3432081B1 true EP3432081B1 (de) 2020-03-18

Family

ID=59930145

Family Applications (1)

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EP18183697.4A Active EP3432081B1 (de) 2017-07-18 2018-07-16 Uhreneinheit

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EP (1) EP3432081B1 (de)
CH (1) CH714000A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4163733A1 (de) * 2021-10-05 2023-04-12 ETA SA Manufacture Horlogère Suisse Triebfeder einer uhr

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3722889A1 (de) * 2019-04-08 2020-10-14 Nivarox-FAR S.A. Elastisches halterungsorgan für die befestigung einer uhrkomponente auf verschiedenen halteelementen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH306105A (fr) * 1953-02-17 1955-03-31 Omega Brandt & Freres Sa Louis Dispositif de fixation d'une roue d'un mouvement d'horlogerie sur l'extrémité d'un arbre.
JPS5820946Y2 (ja) * 1977-06-14 1983-05-02 セイコ−光機株式会社 時計のスリップ機構
CN102893224B (zh) * 2010-03-25 2015-10-21 劳力士有限公司 具有非圆形孔的裂口内桩
WO2013045706A2 (fr) * 2011-09-29 2013-04-04 Rolex S.A. Ensemble monolithique ressort spiral-virole
JP2014190816A (ja) * 2013-03-27 2014-10-06 Citizen Holdings Co Ltd 時計用ぜんまい装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4163733A1 (de) * 2021-10-05 2023-04-12 ETA SA Manufacture Horlogère Suisse Triebfeder einer uhr

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EP3432081A1 (de) 2019-01-23
CH714000A1 (fr) 2019-01-31

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