EP2957963B1 - Timepiece wheel - Google Patents

Timepiece wheel Download PDF

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Publication number
EP2957963B1
EP2957963B1 EP14172870.9A EP14172870A EP2957963B1 EP 2957963 B1 EP2957963 B1 EP 2957963B1 EP 14172870 A EP14172870 A EP 14172870A EP 2957963 B1 EP2957963 B1 EP 2957963B1
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EP
European Patent Office
Prior art keywords
arm
arbor
plate
wheel set
pivot axis
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
EP14172870.9A
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German (de)
French (fr)
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EP2957963A1 (en
Inventor
Olivier Mertenat
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.)
ETA Manufacture Horlogere Suisse SA
Original Assignee
ETA Manufacture Horlogere Suisse 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
Priority to CH00920/14A priority Critical patent/CH709792A2/en
Application filed by ETA Manufacture Horlogere Suisse SA filed Critical ETA Manufacture Horlogere Suisse SA
Priority to EP14172870.9A priority patent/EP2957963B1/en
Priority to CN201580031842.6A priority patent/CN106537262B/en
Priority to JP2016547098A priority patent/JP6276864B2/en
Priority to EP15727642.9A priority patent/EP3158402B1/en
Priority to PCT/EP2015/062542 priority patent/WO2015193123A1/en
Priority to US15/309,452 priority patent/US10365608B2/en
Publication of EP2957963A1 publication Critical patent/EP2957963A1/en
Application granted granted Critical
Publication of EP2957963B1 publication Critical patent/EP2957963B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • G04B13/023—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft allowing rotational slipping when a threshold torque is exceeded
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/025—Wheels; Pinions; Spindles; Pivots with elastic means between the toothing and the hub of a toothed wheel

Definitions

  • the invention relates to a multi-part horological mobile, comprising a first component constituted by a shaft which comprises, around a first axis of pivoting, a housing arranged for receiving a second component constituted by a board in a single axial position, said board having a peripheral surface with reference to a second pivot axis, said shaft comprising, on either side of said at least one housing, in the direction of said first pivot axis, a bearing surface of axial stop arranged to maintain abutment abutment said board on said shaft, wherein said board comprises at least one first arm elastically radially relative to said second pivot axis, and at least one second rigid or elastic arm radially relative to said second axis of pivoting, said first elastic arm and second arm together forming a clamp arranged to clamp a radial bearing surface q ue comprises said shaft in the vicinity of said axial abutment bearing surface, said first elastic arm and second arm extending on either side of said second pivot axis, in directions parallel to
  • the invention further relates to a watch movement comprising at least one such mobile.
  • the invention relates to the field of watch mechanisms, and more particularly the wheels.
  • Many mechanical watch movements comprise at least one friction mobile, in particular to allow adjustments when the watch operates.
  • a mechanical movement equipped with a medium wheel, usually has a friction at the level of the clockwork. Friction makes it possible to turn the road, independently of the finishing gear, during the time setting. Friction also allows rotation of the drive wheel plate when the watch is running.
  • the document FR 1061488 in the name of EBAUCHES ETA SA describes an improvement for watch with second hand in the center, where a second wheel pivoted to the center of the movement is driven directly, while a coaxial pavement to the second wheel is rotated indirectly. More particularly, an indirect minute wheel, engaged with the pinion of the wheel of small average, is fixed to friction on the roadway.
  • the document JP S59 135385 in the name of SEIKO describes a plastic wheel fixed elastically on a metal gear.
  • the document JP S50 91562 in the name of SEIKO describes a wheel with a board with spokes elastically fixed on a tree.
  • the invention relates to a multi-part clockwork mobile according to claim 1.
  • the invention also relates to a watch movement comprising at least one such mobile, characterized in that the composition of said mobile is restricted to said shaft and said board assembled one on the other.
  • the invention relates to a multi-part watch mobile 100.
  • this mobile 100 comprises friction means, and is called “friction mobile”.
  • the mobile 100 comprises a first component consisting of a shaft 1.
  • This shaft 1 comprises, around a first pivot axis D1, a housing 6 arranged for receiving a second component.
  • This second component consists of a board 2 in a single axial position.
  • the board 2 has a peripheral surface 20 with reference to a second pivot axis D2.
  • the shaft 1 comprises, on either side of the at least one housing 6, in the direction of the first axis of pivoting D1, an axial abutment bearing surface 7 which is arranged to maintain abutment abutment board 2 on the tree 1.
  • This board 2 comprises at least one first resilient arm 4 radially with respect to the second pivot axis D2, and at least one second rigid or elastic arm 5 radially relative to the second pivot axis D2.
  • first elastic arms 4 and second arms 5 together form a clamp 3, which is arranged to clamp a radial bearing surface 9 that the shaft 1 has in the vicinity of the axial abutment abutment surface 7. The friction is thus assured between the board 2 and the tree 1.
  • the elasticity of the arms 4, 5, of the board 2 is used to allow proper positioning, and preferably a snap in position.
  • the shaft 1 comprises an introduction ramp 8, which is arranged to radially push each first elastic arm 4, and each second elastic arm 5 when the board 2 comprises, to allow the introduction of the board 2 on the tree 1.
  • the board 2 comprises a first elastic arm 4 and a second elastic arm 5, symmetrical to each other with respect to the second pivot axis D2.
  • the clamp 3 is circumscribed to a cylinder whose radius is smaller than that of a cylinder circumscribed to the radial bearing surface 9.
  • the central part of the board 2 comprises as many curved surfaces, in particular cylindrical surfaces, as of arms 4, 5.
  • arms 4, 5 In the variants illustrated by the figures, which comprise a first elastic arm 4, and a second arm 5, the center of the board is defined by two curved surfaces, which come to grip the tree 1.
  • the figure 7 illustrates a similar embodiment of the invention, type "2 points" where the board 2 is on the shaft 1 at two symmetrical points P1 and P2 with respect to the axis D1.
  • Each first arm 4 or second arm 5 thus comprises such a curved surface constituted by a hollow cylindrical sector 34, 35, whose axis C is eccentric with respect to the second pivot axis D2.
  • the axis C is then further from the hollow cylindrical sector 34, 35, than the second pivot axis D2, with an eccentricity value E, visible on the figure 9 which is between 0.1 and 0.2 times the radius of the hollow cylindrical sector 34, 35, considered.
  • the value of the friction is advantageously defined by a precise interval, from 0.060 to 0.080 N.cm, in order to fulfill the criteria of quality to the impact behavior, and of setting the time. It is understood that the friction can be achieved, or at the level of surfaces of a certain magnitude, such as the cylindrical sectors 34, 35, or at point areas, for example in the form of a friction 2 points or 4 points.
  • a "4-point" type embodiment according to the invention is visible in figure 10 : the board 2 bears on the shaft 1 in four points P11, P12, P13, P14, symmetrical two by two with respect to the axis D1.
  • the inside board radius Rp is then less than the road radius Rch at the level of the shaft 1.
  • the board 2 comprises first drive means 21 at the first elastic arm 4, and second drive means 22 at each said second elastic arm 5 when the board 2 comprises.
  • first 21 and second 22 drive means comprise raised profiled sector relief and / or reentrant, which are arranged to cooperate with complementary profile tooling for the opening of the clamp 3 during the introduction of the board 2 on the tree 1.
  • first 21 and second 22 drive means are symmetrical with respect to the second pivot axis D2.
  • the board 2 may further comprise, in the vicinity of its periphery and in its inner part, third 23 and fourth 24 drive means.
  • the board 2 comprises holding means, such as posts or bores, or the like, in its most rigid part, which are arranged to cooperate with a traction tool.
  • the board 2 has on its lower face 21 and / or upper 22, a surface roughness greater than 6.3 micrometers Ra, for its cooperation in friction with a holding tool and / or traction.
  • the peripheral surface 20 is a toothing oriented on the second pivot axis D2.
  • peripheral surface 20 is a cam with reference to the second pivot axis D2 and to an angular reference constituted by the first arm 4 or by the second arm 5.
  • the radial bearing surface 9 and the introduction ramp 8 of the shaft 1 together define a bead 10, which is arranged to immobilize the board 2 on the shaft 1 when the board is in abutment. support on the axial abutment bearing surface 7 of the shaft 1.
  • the radial bearing surface 9 is flush with respect to the bead 10. This draft angle makes it possible to maintain the board 2 at a constant height and with a constant radius of friction.
  • the invention also relates to a watch movement 200 comprising at least one such mobile 100.
  • the composition of this mobile 100 is restricted to the shaft 1 and the board 2 assembled on one another.

Description

Domaine de l'inventionField of the invention

L'invention concerne un mobile d'horlogerie en plusieurs parties, comportant un premier composant constitué par un arbre lequel comporte, autour d'un premier axe de pivotement, un logement agencé pour la réception d'un deuxième composant constitué par une planche dans une position axiale unique, ladite planche comportant une surface périphérique en référence à un deuxième axe de pivotement, ledit arbre comportant, de part et d'autre dudit au moins un logement, selon la direction dudit premier axe de pivotement, une surface d'appui de butée axiale agencée pour maintenir en appui de butée ladite planche sur ledit arbre, où ladite planche comporte au moins un premier bras élastique radialement par rapport audit deuxième axe de pivotement, et au moins un deuxième bras rigide ou élastique radialement par rapport audit deuxième axe de pivotement, lesdits premier bras élastique et deuxième bras formant ensemble une pince agencée pour serrer une surface d'appui radiale que comporte ledit arbre au voisinage de ladite surface d'appui de butée axiale, lesdits premier bras élastique et deuxième bras s'étendant de part et d'autre dudit deuxième axe de pivotement, selon des directions parallèles entre elles, sensiblement tangentielles par rapport audit arbre quand ledit arbre est serré dans ladite pinceThe invention relates to a multi-part horological mobile, comprising a first component constituted by a shaft which comprises, around a first axis of pivoting, a housing arranged for receiving a second component constituted by a board in a single axial position, said board having a peripheral surface with reference to a second pivot axis, said shaft comprising, on either side of said at least one housing, in the direction of said first pivot axis, a bearing surface of axial stop arranged to maintain abutment abutment said board on said shaft, wherein said board comprises at least one first arm elastically radially relative to said second pivot axis, and at least one second rigid or elastic arm radially relative to said second axis of pivoting, said first elastic arm and second arm together forming a clamp arranged to clamp a radial bearing surface q ue comprises said shaft in the vicinity of said axial abutment bearing surface, said first elastic arm and second arm extending on either side of said second pivot axis, in directions parallel to each other, substantially tangential with respect to said shaft when said shaft is clamped into said clamp

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mobile.The invention further relates to a watch movement comprising at least one such mobile.

L'invention concerne le domaine des mécanismes d'horlogerie, et plus particulièrement des rouages.The invention relates to the field of watch mechanisms, and more particularly the wheels.

Arrière-plan de l'inventionBackground of the invention

De nombreux mouvements d'horlogerie mécaniques comportent au moins un mobile à friction, de façon notamment à autoriser des réglages quand la montre fonctionne.Many mechanical watch movements comprise at least one friction mobile, in particular to allow adjustments when the watch operates.

Par exemple, un mouvement mécanique, équipé d'une roue grande moyenne, comporte généralement une friction au niveau du rouage de minuterie. La friction permet de tourner la chaussée, indépendamment du rouage de finissage, lors de la mise à l'heure. La friction permet aussi une rotation solidaire de la planche roue entraîneuse, lorsque la montre fonctionne.For example, a mechanical movement, equipped with a medium wheel, usually has a friction at the level of the clockwork. Friction makes it possible to turn the road, independently of the finishing gear, during the time setting. Friction also allows rotation of the drive wheel plate when the watch is running.

Le document FR 1061488 au nom de EBAUCHES ETA SA décrit un perfectionnement pour montre avec aiguille de seconde au centre, où une roue de seconde pivotée au centre du mouvement est entraînée directement, tandis qu'une chaussée coaxiale à la roue de seconde est pivotée indirectement. Plus particulièrement, une roue indirecte des minutes, en prise avec le pignon de la roue de petite moyenne, est fixée à frottement gras sur la chaussée.The document FR 1061488 in the name of EBAUCHES ETA SA describes an improvement for watch with second hand in the center, where a second wheel pivoted to the center of the movement is driven directly, while a coaxial pavement to the second wheel is rotated indirectly. More particularly, an indirect minute wheel, engaged with the pinion of the wheel of small average, is fixed to friction on the roadway.

Le document US 2006/187768 au nom de MARAZUMI décrit une structure de roue comportant une planche fixée élastiquement sur un arbre.The document US 2006/187768 in the name of MARAZUMI describes a wheel structure comprising a board resiliently attached to a shaft.

Le document JP S59 135385 au nom de SEIKO décrit une roue plastique fixée élastiquement sur un pignon métallique.The document JP S59 135385 in the name of SEIKO describes a plastic wheel fixed elastically on a metal gear.

Le document JP S50 91562 au nom de SEIKO décrit une roue avec une planche à rayons fixés élastiquement sur un arbre.The document JP S50 91562 in the name of SEIKO describes a wheel with a board with spokes elastically fixed on a tree.

Résumé de l'inventionSummary of the invention

L'invention concerne un mobile d'horlogerie en plusieurs parties, selon la revendication 1.The invention relates to a multi-part clockwork mobile according to claim 1.

L'invention concerne encore un mouvement d'horlogerie comportant au moins un tel mobile, caractérisé en ce que la composition dudit mobile est restreinte audit arbre et à ladite planche assemblés l'une sur l'autre.The invention also relates to a watch movement comprising at least one such mobile, characterized in that the composition of said mobile is restricted to said shaft and said board assembled one on the other.

Rescription sommaire des dessinsSummary summary of drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :

  • la figure 1 représente, de façon schématisée et en perspective, un mobile selon l'invention, comportant une planche montée à friction sur un arbre ;
  • la figure 2 représente, de façon schématisée, le mobile de la figure 1, en coupe passant par l'axe de pivotement ;
  • la figure 3 représente, de façon schématisée, le mobile de la figure 1, en vue de dessus ;
  • la figure 4 représente, de façon schématisée et en perspective, l'arbre que comporte le mobile de la figure 1 ;
  • la figure 5 représente, de façon schématisée, l'arbre de la figure 4, en coupe passant par son axe de pivotement ;
  • la figure 6 est un détail de la zone d'assemblage de la figure 2 ;
  • la figure 7 représente, de façon schématisée et en vue de dessus une planche que comporte le mobile de la figure 1, dans une réalisation voisine de l'invention, de type « 2 points de contact »;
  • la figure 8 est une vue de côté de la planche de la figure 7 ;
  • la figure 9 est un détail en vue de dessus d'une zone centrale de la planche de la figure 7 ;
  • la figure 10 représente, de façon schématisée et en vue de dessus une planche que comporte le mobile de la figure 1, dans une réalisation selon l'invention de type « 4 points de contact ».
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 schematically shows in perspective a mobile according to the invention, comprising a board frictionally mounted on a shaft;
  • the figure 2 represents, schematically, the motive of the figure 1 in section passing through the pivot axis;
  • the figure 3 represents, schematically, the motive of the figure 1 , in top view;
  • the figure 4 represents, schematically and in perspective, the tree that includes the mobile of the figure 1 ;
  • the figure 5 represents, schematically, the tree of the figure 4 in section passing through its pivot axis;
  • the figure 6 is a detail of the assembly area of the figure 2 ;
  • the figure 7 represents, schematically and in plan view a board that includes the mobile of the figure 1 , in an embodiment close to the invention, of the type "2 points of contact";
  • the figure 8 is a side view of the board of the figure 7 ;
  • the figure 9 is a detail in top view of a central area of the board of the figure 7 ;
  • the figure 10 represents, schematically and in plan view a board that includes the mobile of the figure 1 , in an embodiment according to the invention of the type "4 points of contact".

Description détaillée des modes de réalisation référésDetailed description of the embodiments referred

L'invention concerne un mobile 100 d'horlogerie en plusieurs parties.The invention relates to a multi-part watch mobile 100.

Plus particulièrement, ce mobile 100 comporte des moyens de friction, et est dénommé « mobile à friction ».More particularly, this mobile 100 comprises friction means, and is called "friction mobile".

Le mobile 100 comporte un premier composant constitué par un arbre 1. Cet arbre 1 comporte, autour d'un premier axe de pivotement D1, un logement 6 agencé pour la réception d'un deuxième composant. Ce deuxième composant est constitué par une planche 2 dans une position axiale unique.The mobile 100 comprises a first component consisting of a shaft 1. This shaft 1 comprises, around a first pivot axis D1, a housing 6 arranged for receiving a second component. This second component consists of a board 2 in a single axial position.

La planche 2 comporte une surface périphérique 20 en référence à un deuxième axe de pivotement D2.The board 2 has a peripheral surface 20 with reference to a second pivot axis D2.

L'arbre 1 comporte, de part et d'autre du au moins un logement 6, selon la direction du premier axe de pivotement D1, une surface d'appui de butée axiale 7 qui est agencée pour maintenir en appui de butée la planche 2 sur l'arbre 1.The shaft 1 comprises, on either side of the at least one housing 6, in the direction of the first axis of pivoting D1, an axial abutment bearing surface 7 which is arranged to maintain abutment abutment board 2 on the tree 1.

Cette planche 2 comporte au moins un premier bras élastique 4 radialement par rapport au deuxième axe de pivotement D2, et au moins un deuxième bras 5 rigide ou élastique radialement par rapport au deuxième axe de pivotement D2.This board 2 comprises at least one first resilient arm 4 radially with respect to the second pivot axis D2, and at least one second rigid or elastic arm 5 radially relative to the second pivot axis D2.

Ces premier bras élastique 4 et deuxième bras 5 forment ensemble une pince 3, qui est agencée pour serrer une surface d'appui radiale 9 que comporte l'arbre 1 au voisinage de la surface d'appui de butée axiale 7. La friction est ainsi assurée entre la planche 2 et l'arbre 1.These first elastic arms 4 and second arms 5 together form a clamp 3, which is arranged to clamp a radial bearing surface 9 that the shaft 1 has in the vicinity of the axial abutment abutment surface 7. The friction is thus assured between the board 2 and the tree 1.

Pour l'assemblage de la planche 2 sur l'arbre 1, on utilise l'élasticité des bras 4, 5, de la planche 2, pour permettre une mise en place correcte, et, de préférence, un encliquetage en position.For the assembly of the board 2 on the shaft 1, the elasticity of the arms 4, 5, of the board 2, is used to allow proper positioning, and preferably a snap in position.

Selon l'invention, l'arbre 1 comporte une rampe d'introduction 8, qui est agencée pour repousser radialement chaque premier bras élastique 4, et chaque deuxième bras 5 élastique quand la planche 2 en comporte, pour permettre l'introduction de la planche 2 sur l'arbre 1.According to the invention, the shaft 1 comprises an introduction ramp 8, which is arranged to radially push each first elastic arm 4, and each second elastic arm 5 when the board 2 comprises, to allow the introduction of the board 2 on the tree 1.

Dans une réalisation particulière, la planche 2 comporte un premier bras élastique 4, et un deuxième bras 5 élastique, symétriques l'un de l'autre par rapport au deuxième axe de pivotement D2.In a particular embodiment, the board 2 comprises a first elastic arm 4 and a second elastic arm 5, symmetrical to each other with respect to the second pivot axis D2.

De façon avantageuse, à l'état libre, la pince 3 est circonscrite à un cylindre dont le rayon est inférieur à celui d'un cylindre circonscrit à la surface d'appui radiale 9.Advantageously, in the free state, the clamp 3 is circumscribed to a cylinder whose radius is smaller than that of a cylinder circumscribed to the radial bearing surface 9.

La partie centrale de la planche 2 comporte autant de surfaces courbes, notamment des surfaces cylindriques, que de bras 4, 5. Dans les variantes illustrées par les figures, qui comportent un premier bras élastique 4, et un deuxième bras 5, le centre de la planche est défini par deux surfaces courbes, qui viennent pincer l'arbre 1.The central part of the board 2 comprises as many curved surfaces, in particular cylindrical surfaces, as of arms 4, 5. In the variants illustrated by the figures, which comprise a first elastic arm 4, and a second arm 5, the center of the board is defined by two curved surfaces, which come to grip the tree 1.

La figure 7 illustre une réalisation voisine de l'invention, de type « 2 points » où la planche 2 porte sur l'arbre 1 en deux points symétriques P1 et P2 par rapport à l'axe D1. Chaque premier bras 4 ou deuxième bras 5 comporte ainsi une telle surface courbe, constituée par un secteur cylindrique creux 34, 35, dont l'axe C est excentré par rapport au deuxième axe de pivotement D2. L'axe C est alors plus éloigné du secteur cylindrique creux 34, 35, que le deuxième axe de pivotement D2, d'une valeur d'excentration E, visible sur la figure 9, qui est comprise entre 0,1 et 0,2 fois le rayon du secteur cylindrique creux 34, 35, considéré.The figure 7 illustrates a similar embodiment of the invention, type "2 points" where the board 2 is on the shaft 1 at two symmetrical points P1 and P2 with respect to the axis D1. Each first arm 4 or second arm 5 thus comprises such a curved surface constituted by a hollow cylindrical sector 34, 35, whose axis C is eccentric with respect to the second pivot axis D2. The axis C is then further from the hollow cylindrical sector 34, 35, than the second pivot axis D2, with an eccentricity value E, visible on the figure 9 which is between 0.1 and 0.2 times the radius of the hollow cylindrical sector 34, 35, considered.

Pour une friction de rouage de minuterie, la valeur de la friction est avantageusement définie par un intervalle précis, de 0,060 à 0,080 N.cm, afin de remplir les critères de qualité au comportement aux chocs, et de mise à l'heure. On comprend que la friction peut être réalisée, ou bien au niveau de surfaces d'une certaine ampleur, comme les secteurs cylindriques 34, 35, ou bien au niveau de zones ponctuelles, par exemple sous la forme d'une friction 2 points ou 4 points.For a clockwork friction, the value of the friction is advantageously defined by a precise interval, from 0.060 to 0.080 N.cm, in order to fulfill the criteria of quality to the impact behavior, and of setting the time. It is understood that the friction can be achieved, or at the level of surfaces of a certain magnitude, such as the cylindrical sectors 34, 35, or at point areas, for example in the form of a friction 2 points or 4 points.

Une réalisation de type « 4 points » selon l'invention est visible en figure 10: la planche 2 ne porte sur l'arbre 1 qu'en quatre points P11, P12, P13, P14, symétriques deux à deux par rapport à l'axe D1. Le rayon intérieur de planche Rp est alors inférieur au rayon de chaussée Rch au niveau de l'arbre 1.A "4-point" type embodiment according to the invention is visible in figure 10 : the board 2 bears on the shaft 1 in four points P11, P12, P13, P14, symmetrical two by two with respect to the axis D1. The inside board radius Rp is then less than the road radius Rch at the level of the shaft 1.

Dans une variante particulière, la planche 2 comporte des premiers moyens d'entraînement 21 au niveau du premier bras élastique 4, et des deuxièmes moyens d'entraînement 22 au niveau de chaque dit deuxième bras 5 élastique quand la planche 2 en comporte. Et ces premiers 21 et deuxièmes 22 moyens d'entraînement comportent des secteurs à profil en relief saillant et/ou rentrant, qui sont agencés pour coopérer avec un outillage de profil complémentaire pour l'ouverture de la pince 3 lors de l'introduction de la planche 2 sur l'arbre 1.In a particular variant, the board 2 comprises first drive means 21 at the first elastic arm 4, and second drive means 22 at each said second elastic arm 5 when the board 2 comprises. And these first 21 and second 22 drive means comprise raised profiled sector relief and / or reentrant, which are arranged to cooperate with complementary profile tooling for the opening of the clamp 3 during the introduction of the board 2 on the tree 1.

Plus particulièrement, les premiers 21 et deuxièmes 22 moyens d'entraînement sont symétriques par rapport au deuxième axe de pivotement D2.More particularly, the first 21 and second 22 drive means are symmetrical with respect to the second pivot axis D2.

Dans une variante, la planche 2 peut encore comporter, au voisinage de sa périphérie et dans sa partie intérieure, des troisièmes 23 et quatrièmes 24 moyens d'entraînement.Alternatively, the board 2 may further comprise, in the vicinity of its periphery and in its inner part, third 23 and fourth 24 drive means.

Avantageusement la planche 2 comporte des moyens de maintien, tels qu'ergots ou perçages, ou similaires, dans sa partie la plus rigide, qui sont agencés pour coopérer avec un outillage de traction.Advantageously, the board 2 comprises holding means, such as posts or bores, or the like, in its most rigid part, which are arranged to cooperate with a traction tool.

Dans une variante particulière, la planche 2 comporte sur sa face inférieure 21 et/ou supérieure 22, un état de surface de rugosité supérieur à 6,3 micromètres Ra, pour sa coopération en friction avec un outillage de maintien et/ou de traction.In a particular variant, the board 2 has on its lower face 21 and / or upper 22, a surface roughness greater than 6.3 micrometers Ra, for its cooperation in friction with a holding tool and / or traction.

Dans une variante non limitative, la surface périphérique 20 est une denture axée sur le deuxième axe de pivotement D2.In a non-limiting variant, the peripheral surface 20 is a toothing oriented on the second pivot axis D2.

Dans une autre variante, la surface périphérique 20 est une came en référence au deuxième axe de pivotement D2 et à une référence angulaire constituée par le premier bras 4 ou par le deuxième bras 5.In another variant, the peripheral surface 20 is a cam with reference to the second pivot axis D2 and to an angular reference constituted by the first arm 4 or by the second arm 5.

Dans une réalisation avantageuse, la surface d'appui radiale 9 et la rampe d'introduction 8 de l'arbre 1 définissent ensemble un bourrelet 10, qui est agencé pour immobiliser la planche 2 sur l'arbre 1 quand la planche est en butée d'appui sur la surface d'appui de butée axiale 7 de l'arbre 1.In an advantageous embodiment, the radial bearing surface 9 and the introduction ramp 8 of the shaft 1 together define a bead 10, which is arranged to immobilize the board 2 on the shaft 1 when the board is in abutment. support on the axial abutment bearing surface 7 of the shaft 1.

Dans une variante particulière, la surface d'appui radiale 9 est en dépouille par rapport au bourrelet 10. Cet angle de dépouille permet de maintenir la planche 2 à hauteur constante, et à rayon de frottement constant.In a particular variant, the radial bearing surface 9 is flush with respect to the bead 10. This draft angle makes it possible to maintain the board 2 at a constant height and with a constant radius of friction.

L'invention concerne encore un mouvement d'horlogerie 200 comportant au moins un tel mobile 100. De préférence, la composition de ce mobile 100 est restreinte à l'arbre 1 et à la planche 2 assemblés l'une sur l'autre.The invention also relates to a watch movement 200 comprising at least one such mobile 100. Preferably, the composition of this mobile 100 is restricted to the shaft 1 and the board 2 assembled on one another.

Claims (15)

  1. Timepiece wheel set (100) in several parts, said wheel set (100) comprising a first component formed by an arbor (1) which includes, about a first pivot axis (D1), a housing (6) arranged for reception of a second component formed by a plate (2) in a single axial position, said plate (2) including a peripheral surface (20) with respect to a second pivot axis (D2), said arbor (1) comprising, on either side of said at least one housing (6), in the direction of said first pivot axis (D1), an axial abutment surface (7) arranged to hold said plate (2) in abutment on said arbor (1), wherein said plate (2) comprises at least a first arm (4), resilient radially with respect to said second pivot axis (D2), and at least a second arm (5) that is stiff or resilient radially with respect to said second pivot axis (D2), said first resilient arm (4) and second arm (5) together forming a clamp (3) arranged to clamp a radial bearing surface (9) comprised in said arbor (1) in proximity to said axial abutment surface (7), said first resilient arm (4) and second arm (5) extending on either side of said second pivot axis (D2), in directions parallel to one another and substantially tangential with respect to said arbor (1) when said arbor (1) is clamped in said clamp (3), said plate (2) bearing on said arbor (1) at only four points (P11, P12, P13 ,P14) in symmetrical pairs with respect to said first pivot axis (D1), with an inner plate radius (Rp) between two said contact points (P11, P12, P13 ,P14) located on a same said arm (4; 5), which is smaller than a cannon-pinion radius (Rch) on said arbor (1) between the same said two contact points (P11, P12, P13 ,P14) located on a same said arm (4; 5), and said arbor (1) comprising an entry ramp (8) arranged to push back radially each said first resilient arm (4) and, when comprised in said plate (2), each said second resilient arm (5), to allow said plate (2) to be placed on said arbor (1).
  2. Wheel set (100) according to claim 1, characterized in that said first resilient arm (4) and second arm (5) are substantially symmetrical with respect to a plane passing through said second pivot axis (D2).
  3. Wheel set (100) according to claim 1 or 2, characterized in that said arbor (1) is substantially symmetrical with respect to a plane passing through said first pivot axis (D1).
  4. Wheel set (100) according to any of claims 1 to 3, characterized in that, in the free state, said clamp (3) circumscribes a cylinder of smaller radius than that of a cylinder circumscribing said radial bearing surface (9).
  5. Wheel set (100) according to any of claims 1 to 4, characterized in that each said first arm (4) or said second arm (5) comprises a cylindrical hollow sector (34; 35) whose axis (C) is off-centre with respect to said second pivot axis (D2).
  6. Wheel set (100) according to any of claims 1 to 5, characterized in that said plate (2) includes first drive means (21) on said first resilient arm (4), and second drive means (22) on each said second resilient arm (5), when said plate (2) comprises the same, and in that said first (21) and second (22) drive means include sectors with a raised and/or recessed relief profile arranged to cooperate with a tool of complementary profile to open said clamp (3) when said plate (2) is placed on said arbor (1).
  7. Wheel set (100) according to claim 6, characterized in that said first (21) and second (22) drive means are symmetrical with respect to said second pivot axis (D2).
  8. Wheel set (100) according to claim 7, characterized in that said plate (2) comprises holding means, in the stiffest portion thereof, to cooperate with a pulling tool.
  9. Wheel set (100) according to any of claims 1 to 8, characterized in that said plate (2) comprises, in proximity to the periphery thereof and in the inner portion thereof, third (23) and fourth (24) drive means.
  10. Wheel set (100) according to any of claims 1 to 9, characterized in that said plate (2) comprises on the lower face (21) and/or upper face (22) thereof, a state of surface roughness greater than 6.3 micrometres Ra for frictional cooperation with a holding and/or pulling tool.
  11. Wheel set (100) according to any of claims 1 to 10, characterized in that said peripheral surface (20) is a toothing centred on said second pivot axis (D2).
  12. Wheel set (100) according to any of claims 1 to 11, characterized in that said peripheral surface (20) is a cam with respect to said second pivot axis (D2) and to an angular reference formed by said first arm (4) or by said second arm (5).
  13. Wheel set (100) according to any of claims 1 to 12, characterized in that said radial bearing surface (9) and said entry ramp (8) of said arbor (1) together define a clot (10), arranged to immobilise said plate (2) on said arbor (1) when said plate is in abutment on said axial abutment surface (7) of said arbor (1).
  14. Wheel set (100) according to claim 13, characterized in that said radial bearing surface (9) is undercut with respect to said flange (10).
  15. Timepiece movement (200) comprising at least one wheel set (100) according to any of claims 1 to 14, characterized in that the composition of said wheel set (100) is limited to said arbor (1) and to said plate (2) assembled one on top of the other.
EP14172870.9A 2014-06-18 2014-06-18 Timepiece wheel Active EP2957963B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP14172870.9A EP2957963B1 (en) 2014-06-18 2014-06-18 Timepiece wheel
CH00920/14A CH709792A2 (en) 2014-06-18 2014-06-18 Mobile clock.
JP2016547098A JP6276864B2 (en) 2014-06-18 2015-06-05 Watch wheel set
EP15727642.9A EP3158402B1 (en) 2014-06-18 2015-06-05 Timepiece wheel
CN201580031842.6A CN106537262B (en) 2014-06-18 2015-06-05 Clock and watch wheel set
PCT/EP2015/062542 WO2015193123A1 (en) 2014-06-18 2015-06-05 Timepiece train
US15/309,452 US10365608B2 (en) 2014-06-18 2015-06-05 Timepiece wheel set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14172870.9A EP2957963B1 (en) 2014-06-18 2014-06-18 Timepiece wheel

Publications (2)

Publication Number Publication Date
EP2957963A1 EP2957963A1 (en) 2015-12-23
EP2957963B1 true EP2957963B1 (en) 2017-10-25

Family

ID=50942598

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14172870.9A Active EP2957963B1 (en) 2014-06-18 2014-06-18 Timepiece wheel
EP15727642.9A Active EP3158402B1 (en) 2014-06-18 2015-06-05 Timepiece wheel

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15727642.9A Active EP3158402B1 (en) 2014-06-18 2015-06-05 Timepiece wheel

Country Status (6)

Country Link
US (1) US10365608B2 (en)
EP (2) EP2957963B1 (en)
JP (1) JP6276864B2 (en)
CN (1) CN106537262B (en)
CH (1) CH709792A2 (en)
WO (1) WO2015193123A1 (en)

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JP6891622B2 (en) * 2017-04-28 2021-06-18 セイコーエプソン株式会社 Machine parts and watches
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US10838366B2 (en) * 2017-09-14 2020-11-17 Timex Group Usa, Inc. Bidirectional MEMS driving arrangements with a force absorbing system
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Also Published As

Publication number Publication date
US10365608B2 (en) 2019-07-30
EP3158402A1 (en) 2017-04-26
EP3158402B1 (en) 2018-08-22
CH709792A2 (en) 2015-12-31
WO2015193123A1 (en) 2015-12-23
JP6276864B2 (en) 2018-02-07
CN106537262B (en) 2018-11-23
US20170185040A1 (en) 2017-06-29
EP2957963A1 (en) 2015-12-23
CN106537262A (en) 2017-03-22
JP2017503181A (en) 2017-01-26

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