EP2945028A1 - Stoßdämpfendes Lager - Google Patents

Stoßdämpfendes Lager Download PDF

Info

Publication number: EP2945028A1
Authority: EP; European Patent Office
Prior art keywords: ring; elastic member; cup; elastic; bearing according
Prior art date: 2014-05-16
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

EP14168725.1A

Other languages

English (en)

French (fr)

Other versions

EP2945028B1 (de

Inventor

Pierre Gygax

Lucas Humair

Loïc Pellaton

Stéphane von Gunten

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.)

Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA

Original Assignee

Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle 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.)

2014-05-16

Filing date

2014-05-16

Publication date

2015-11-18

2014-05-16 Application filed by Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA filed Critical Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA

2014-05-16 Priority to EP14168725.1A priority Critical patent/EP2945028B1/de

2015-11-18 Publication of EP2945028A1 publication Critical patent/EP2945028A1/de

2024-09-18 Application granted granted Critical

2024-09-18 Publication of EP2945028B1 publication Critical patent/EP2945028B1/de

Status Active legal-status Critical Current

2034-05-16 Anticipated expiration legal-status Critical

Images

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
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
- G04B31/02—Shock-damping bearings
- G04B31/04—Shock-damping bearings with jewel hole and cap jewel

Definitions

the present invention relates to the field of watchmaking. It relates, more particularly, an anti-shock bearing for a timepiece.
bearings are known.
the bearing described in this patent comprises a circular cup forming a cavity, and a spring, consisting of two concentric rigid parts, annular and connected by elastic arms.
the outer annular portion is forcibly mounted in the cup.
a pierced stone is driven into the inner annular portion and a counter-pivot stone is assembled on the inner annular portion with a cap permanently attached to the inner annular portion.
this type of bearing does not mount easily.
the outer annular portion is forced into the cup and the pierced stone is driven directly into the inner annular portion which is unsatisfactory in view of the stresses experienced during assembly and residual stresses on the spring. otherwise this bearing does not disassemble, which complicates repair or maintenance interventions such as cleaning and lubrication.
This requires the provision of through passages in the inner annular portion to access the space between the two stones and allow cleaning and lubrication.
the lubricant can escape through this passage and impurities can penetrate which increases the frequency of revisions.
the present invention aims to provide a shockproof bearing of the above kind which is easier to assemble, on the one hand at the mounting of the pivot member on the spring, on the other hand at the mounting of the spring in the cup, and that is likely to be dismounted.
the invention relates to a shockproof bearing for a timepiece.
This bearing comprises a cup defining an interior cavity comprising an opening adapted to receive a pivot of a watchmaker, a resilient member mounted coaxially in the cup, comprising a rigid ring and a plurality of resilient arms extending from the ring towards inside, deformable in radial and axial directions with reference to the axis of the bearing.
the bearing comprises, extending towards the outside of the ring, a plurality of holding zones cooperating with a corresponding housing provided in the cup and intended to bear in said housing, said ring comprising in addition, gripping tabs extending outwardly of the ring.
the elastic member is secured to the cup by bayonet coupling.
the housing has flanges separated by gaps without flanges.
This arrangement makes it possible to assemble, and possibly to disassemble, easily the elastic member and the cup, without exerting excessive stresses on the parts to be assembled.
the holding zones each comprise an elastic finger, extending adjacent to the ring or a profile of variable radius which allows a mounting without play and the centering of the elastic member in the cup, limiting the constraints exercised on the ring.
the resilient arms at least partially follow a spiral section.
the anti-shock bearing also comprises a kitten supported by the elastic member, said kitten housing at least one pivoting member, preferably a pierced stone and / or a counter-pivot stone.
the kitten and the elastic member are made in one piece.
the elastic member comprises an inner ring connected to the ring by the elastic arms in which the kitten is mounted by shore. A simple and reliable construction is thus proposed.
the invention also relates to an anti-shock bearing for a timepiece.
This bearing comprises a cup defining an interior cavity comprising an opening adapted to receive a pivot of a watchmaker, a resilient member mounted coaxially in the cup, comprising a rigid ring and a plurality of resilient arms extending from the ring towards the inside, deformable in radial and axial directions with reference to the axis of the bearing, and a kitten supported by the elastic member.
the elastic arms at least partially follow a spiral section, each elastic arm extending over an angular sector of at least 120 ° with respect to the geometric axis of the bearing.
each elastic arm comprises at its end free a tab arranged to engage by clipping into a groove that includes the kitten.
This arrangement allows to easily assemble by clipping, and possibly also to disassemble, the kitten and the elastic member without exerting excessive stress on the parts to be assembled.
each tab has a width in a radial direction at least three times greater than the width of the elastic arm in a radial direction.
the elastic member is made of a crystalline material substantially without a plastic regime, such as a monocrystalline or polycrystalline silicon-based material, based on sapphire, diamond-based, corundum-based, ruby-based, or the like .
the thickness of the resilient arms along the axis of the bearing is at least twice their width, preferably at least four times.
the width of the elastic arms is less than one fiftieth of the outer diameter of the ring.
the kitten and the pivoting member are made in one piece.
each bearing includes a cup 1 intended to be assembled on a timepiece frame, formed by a bridge or a deck not shown.
This cup 1 may, for example, be mounted by driving, screwing, welding or gluing in an ad-hoc recess that includes the frame. It can also be formed directly in the frame and be integral with it.
the cup 1 defines an interior cavity, in which is formed an opening 2 adapted to receive a pivot of a watchmaker.
the axis of the opening 2 preferably coincides with the axis of the opening of the cup 1.
each bearing comprises a pivot member 23 for receiving a pivot, as described in more detail below. .
the Figures 1 to 9 also represent different variants of elastic members 10 particularly adapted to the implementation of the invention, as well as bearings incorporating these elastic members.
the elastic members 10 of all these variants are provided with spiral arms 17 extending inwardly from the ring 11 and adopt different shapes in its inner part.
the elastic arms 17 have a rectangular section whose thickness (considered perpendicular to the plane of the elastic element and parallel to the axis of the bearing) is advantageously about four times the width in a radial direction (that is to say considered in the plane of the elastic element). Furthermore, the width of the arms 17 does not exceed one fiftieth of the outer diameter of the ring 11.
Each of the arms 17 is elastically deformable in axial and radial directions with reference to the axis of the bearing.
the arms 17 of the elastic element 10 extend over substantially 180 °. These arms 17 each have a free end provided with a tab 19 which serves to support a kitten 20 by clipping, as will be described in more detail below.
These lugs 19 advantageously have a width in a radial direction at least three times greater than the width of the elastic arm 17 in a radial direction, that is to say considered in the plane of the elastic element 10, to lend them sufficient rigidity.
the elastic member 10 is interposed between the kitten 20 and the cup 1, and is arranged to exert on said kitten 20 restoring forces in the axial and radial directions relative to the axis of the bearing, tending to maintain or bring the kitten back to its equilibrium position. It is noted that the kitten is supported by the elastic means 10 in a "floating" manner, that is to say without contact with the cup 1.
the kitten 20 supports a pivoting member comprising a pierced stone 23 disposed in the kitten 20 and provided with a hole 24 located substantially on the axis of the bearing when the bearing is in equilibrium position, in which can take up the end of the pivot (not shown in the figure 1 ).
the pivoting member also comprises a counter-pivoting stone 25 disposed at least partially in the kitten 20 in a conventional manner. The end of the pivot can come to rest on the counter pivot stone 25.
the pierced stone 23 and the counter pivot stone 25 are mounted rigidly in the kitten 20 and their relative position, one in reference to the other, is fixed.
the kitten 20 further comprises a circumferential groove 21, arranged so that the tabs 19 that includes the elastic arms 17 can engage by clipping.
the kitten 20 has on its lower outer edge (relative to the view of the figure 1 ), a chamfer 22.
Such a clipping assembly facilitates the mounting of the kitten 20 on the elastic member 10, to reduce the residual stresses inherent in assembly by driving the prior art and to remove the inner ring of the elastic member.
the use of this type of assembly also reduces the constraints during assembly and increase manufacturing tolerances on the assembled parts in comparison to the known solution where a part is driven into the elastic member.
this device offers the advantage of allowing a possible disassembly of the kitten of the elastic member to facilitate the maintenance, maintenance or repair of the timepiece.
FIG. 3 and 4 Another variant appears on the Figures 3 and 4 , which differs from that of Figures 1 and 2 in that the arms 17 extend about 270 ° and connect the ring to an inner ring 18 accommodating a kitten 20.
the kitten 20 is mounted in the ring 18 of the elastic member 10 by a means suitable for those skilled in the art, for example by driving, gluing or riveting as shown in FIG. figure 3 .
the kitten 20 and the elastic member 10 are made integrally. Therefore, no groove 21 is present.
the pivoting member comprises a tubular chimney 44 located in a recess 46 formed in the bottom of the cup 1 at the opening 2 in which is visible a pivot 48, this tubular chimney 44 supporting a pierced stone 23 as well as a counter-pivot stone 25, the latter being secured or not to the tubular chimney 44.
the counter-pivot stone 25 is removed, the pellet 42 acting as a counter-pivot stone itself. Note also that, in these variants, the pellet 42 serves to push the tubular chimney 44 against the bottom of the recess 46 under the force of the elastic arms 17.
the elastic element has a bayonet coupling system, which reversibly secures the elastic member 10 with the cup 1.
the ring 11 is provided with gripping lugs 15, 16 defining in pairs and between them, a working area 26 with which can cooperate a mounting tool.
the elastic member 10 also has holding zones 12 projecting outwardly from the ring 11 and the role of which will appear hereinafter.
the elastic member 10 is intended to be engaged in a housing 3 defined by flanges 4 formed by the cup 1. These flanges 4 are regularly distributed and separated by spaces 5 without a flange, allowing the engagement, in each of spaces 5, gripping lugs 15, 16 associated with a holding zone 12. Then, by insertion in an axial direction and a subsequent rotation of the elastic member 10 by means of the ad-hoc tool, the holding zones 12 are constrained in the housing 3 and pressed against the wall of the cup 1 to prevent inadvertent rotation of the elastic member 10. These holding zones 12 therefore allow a play without assembly allowing centering of the ring in the cup.
the holding zones 12 have an elastic finger 13 extending adjacent to the ring 11, substantially parallel to the ring 11, like a last turn of a spiral. All of the resilient fingers 13 may be oriented in the same direction, as illustrated, or in opposite directions.
the end of the elastic fingers 13 comprises a pad 14 on its outer face for pressing on the wall of the cup 1.
the elastic fingers 13 are attached directly to the ring 11, as shown on the Figures 1 to 4 , or are attached to a gripping tab 16, as shown on the Figures 5 to 7 .
the holding zones 12 have a wedging profile with two portions 27, 28 oriented concentrically at the center of the elastic member, respectively according to two different radii.
the first portion 27 has a radius less than the radius of the housing 3 and can be inserted freely into the housing 3.
the second portion 28 has a radius greater than the radius of the housing 3.
the two portions are connected by an intermediate zone 29 having a radius gradually varying and likely to be wedged against the wall of the housing 3.
this arrangement simplifies the mounting of the elastic member 10 in the cup 1 by making it possible to grip the elastic member 10 more easily thanks to the external gripping tabs 15, 16.
the use of specific holding zones 12, also reduces the constraints during assembly and increase the manufacturing tolerances on the dimensions of the housing 3 of the cup 1 in comparison with the known solution where the elastic member is mounted in force in the cup.
this device offers the advantage of being removable and facilitates maintenance operations, maintenance or repair of the timepiece.
the pivot member may not comprise a pivoting stone if, for example, the pierced stone has a conical hole.
the notion of stone must be understood in a broad way and not be limited to a traditional ruby stone. It will thus be possible to make it based on silicon, possibly in one piece with the kitten, at least for one of the stones.
a stone can be covered with an aluminum oxide material so as to get closer to the conventional friction conditions known by the use of ruby stones.
this bearing particularly the elastic member 10, in a material based on silicon or nickel-based or iron-based (steel).
One or more of the following elements may be produced in one piece: the cup and the frame of the timepiece in which it is directly formed; The elastic member 10 and the kitten 20; the kitten and at least a part of the pivoting member (pierced stone or pivoting stone if appropriate).
the two main aspects of the invention that is to say the bayonet mounting of the elastic member in the cup on the one hand and the clipping of the elastic member in the kitten of on the other hand, as illustrated in Figures 1 and 2 , may be implemented jointly or separately. Therefore, it is possible to provide a clipping connection of a kitten with any kind of attachment of the elastic member 10 in the cup 1. It could, for example, drive the elastic member in the cup 1 of the way described in the EP 1 696 286 , or even by welding or gluing, while the kitten is linked to the elastic element 10 by clipping.
the bayonet mounting can be applied independently of the shape of the central part of the elastic member, which may have a pellet (as is the case in the Figures 5 to 9 ), a ring for driving, crimping or riveting (as in figure 3 ) a stone or a kitten, or any other form.

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Pivots And Pivotal Connections (AREA)

EP14168725.1A 2014-05-16 2014-05-16 Stoßdämpfendes Lager Active EP2945028B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
EP14168725.1A EP2945028B1 (de)	2014-05-16	2014-05-16	Stoßdämpfendes Lager

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP14168725.1A EP2945028B1 (de)	2014-05-16	2014-05-16	Stoßdämpfendes Lager

Publications (2)

Publication Number	Publication Date
EP2945028A1 true EP2945028A1 (de)	2015-11-18
EP2945028B1 EP2945028B1 (de)	2024-09-18

Family

ID=50721714

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP14168725.1A Active EP2945028B1 (de)	2014-05-16	2014-05-16	Stoßdämpfendes Lager

Country Status (1)

Country	Link
EP (1)	EP2945028B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3382472A1 (de) *	2017-03-30	2018-10-03	Rolex Sa	Führungslager einer unruhwelle einer uhr
EP3396470B1 (de)	2017-04-24	2020-01-01	ETA SA Manufacture Horlogère Suisse	Mechanische bremsvorrichtung für drehteil einer uhr
EP4123394A1 (de) *	2021-07-22	2023-01-25	Rolex Sa	Ring zur mechanischen verbindung von zwei uhrenkomponenten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH268589A (de) *	1948-08-23	1950-05-31	Ag Uhrenfabrik Eterna	Stossfänger für Uhrenachsen.
DE902598C (de) *	1944-02-08	1954-01-25	Gerard Erismann	Stossdaempfervorrichtung fuer Uhrwerklager
CH319638A (fr) *	1954-11-09	1957-02-28	Schild Sa A	Palier à coussinet et élément de butée axiale fixes
FR1195898A (fr) *	1957-05-22	1959-11-19	Fontainemelon Horlogerie	Palier fixe pour mobile d'horlogerie
EP1696286A1 (de)	2005-02-23	2006-08-30	ETA SA Manufacture Horlogère Suisse	Stoßdämpfende Uhrenlagerung
CH700496B1 (fr) *	2007-02-16	2010-09-15	Patek Philippe Sa Geneve	Palier antichoc pour pièce d'horlogerie.

2014
- 2014-05-16 EP EP14168725.1A patent/EP2945028B1/de active Active

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE902598C (de) *	1944-02-08	1954-01-25	Gerard Erismann	Stossdaempfervorrichtung fuer Uhrwerklager
CH268589A (de) *	1948-08-23	1950-05-31	Ag Uhrenfabrik Eterna	Stossfänger für Uhrenachsen.
CH319638A (fr) *	1954-11-09	1957-02-28	Schild Sa A	Palier à coussinet et élément de butée axiale fixes
FR1195898A (fr) *	1957-05-22	1959-11-19	Fontainemelon Horlogerie	Palier fixe pour mobile d'horlogerie
EP1696286A1 (de)	2005-02-23	2006-08-30	ETA SA Manufacture Horlogère Suisse	Stoßdämpfende Uhrenlagerung
CH700496B1 (fr) *	2007-02-16	2010-09-15	Patek Philippe Sa Geneve	Palier antichoc pour pièce d'horlogerie.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3382472A1 (de) *	2017-03-30	2018-10-03	Rolex Sa	Führungslager einer unruhwelle einer uhr
US11073798B2 (en)	2017-03-30	2021-07-27	Rolex Sa	Guide bearing for a timepiece balance pivot
EP3396470B1 (de)	2017-04-24	2020-01-01	ETA SA Manufacture Horlogère Suisse	Mechanische bremsvorrichtung für drehteil einer uhr
EP4123394A1 (de) *	2021-07-22	2023-01-25	Rolex Sa	Ring zur mechanischen verbindung von zwei uhrenkomponenten
US20230029031A1 (en) *	2021-07-22	2023-01-26	Rolex Sa	Ring for mechanically connecting two horology components

Also Published As

Publication number	Publication date
EP2945028B1 (de)	2024-09-18

Publication	Publication Date	Title
EP1696286B1 (de)	2010-12-29	Stoßdämpfende Uhrenlagerung
EP2672332B1 (de)	2019-11-13	Verbessertes System eines drehbaren Außenrings (einer Uhr)
EP2469357B2 (de)	2016-06-29	Stoßdämpfer-Gleitlager für eine sich drehende Triebfeder einer Uhr
FR3016938A1 (fr)	2015-07-31	Attache pour la fixation d'un panneau sur un support
EP2113676B1 (de)	2018-10-03	Schwingungsdämpfungsvorrichtung, System mit einer solchen Vorrichtung und Herstellungsverfahren
CH704640B1 (fr)	2012-09-28	Organe de pivotement.
EP2945028B1 (de)	2024-09-18	Stoßdämpfendes Lager
WO2011015474A1 (fr)	2011-02-10	Dispositif de precontrainte a action circonferentielle
FR3017266A1 (fr)	2015-08-14	Roue formant outil agricole ameliore
FR3017265A1 (fr)	2015-08-14	Roue formant outil agricole ameliore
EP2075652B1 (de)	2010-07-28	Antriebs- und Übertragungsorgan für einen Hemmungsmechanimus, damit ausgestattete Platte und Hemmung und mit diesen ausgestattetes Uhrwerk
CH707344A2 (fr)	2014-06-13	Palier antichoc et pièce d'horlogerie comportant un tel palier.
EP1837717B1 (de)	2010-06-02	Uhr und Federhaus mit verbesserter Fixierung des Deckels
EP3070544B1 (de)	2021-12-22	Lager für eine uhr
WO2013054018A1 (fr)	2013-04-18	Montre et ensemble d'un dispositif antichoc et d'un casier de protection pour montre
EP3218770B1 (de)	2019-04-24	Antriebsorgan für uhrwerk
EP3432082B1 (de)	2020-11-04	Regulierorgan
EP3538788B1 (de)	2024-06-26	Mechanische übertragungsvorrichtung
EP2977834B1 (de)	2019-02-20	Stossdämpfer-gleitlager für eine uhr
CH698675B1 (fr)	2009-09-30	Palier amortisseur de chocs pour pièce d'horlogerie.
EP2975471A2 (de)	2016-01-20	Stossdämpfendes lager
EP3422117A1 (de)	2019-01-02	Stossdämpfer-gleitlager für eine achse einer triebfeder einer uhr
EP3291026A1 (de)	2018-03-07	Stossdämpfer-gleitlager für eine uhr
FR3058389B1 (fr)	2019-11-08	Dispositif de montage d'un axe sur une chape
EP4250020A1 (de)	2023-09-27	Armbanduhrengehäuse mit drehbarem aussenring

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