WO2011161139A1 - Systeme antichoc de piece d'horlogerie - Google Patents
Systeme antichoc de piece d'horlogerie Download PDFInfo
- Publication number
- WO2011161139A1 WO2011161139A1 PCT/EP2011/060405 EP2011060405W WO2011161139A1 WO 2011161139 A1 WO2011161139 A1 WO 2011161139A1 EP 2011060405 W EP2011060405 W EP 2011060405W WO 2011161139 A1 WO2011161139 A1 WO 2011161139A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pivot
- timepiece
- shock absorbing
- amorphous
- bearing according
- Prior art date
Links
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
-
- 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 a shock absorbing bearing for an axis of a mobile of a timepiece.
- the spindle comprises a spine extended by a pivot and the bearing comprises a support, said support being provided with a housing adapted to receive a suspended pivot system in which the spine is inserted.
- the technical field of the invention is the technical field of fine mechanics.
- the present invention relates to bearings for timepieces, and more particularly to the type for damping shocks.
- the mechanical watch manufacturers have long designed numerous devices for absorbing the energy resulting from a shock, including a side impact, by the axis by abutting against a wall of the hole of the base block that it traverses, while allowing a momentary movement of the tigeron before it is brought back to its rest position under the action of a spring.
- Figures 1 and 2 illustrate a device, said inverted double cone which is currently used in timepieces on the market.
- the kitten 20 is held in a housing 6 of the support 1 by a spring 10 which comprises in this example of the radial extensions 9 compressing the pivoting stone 5.
- the housing 6 comprises two bearing surfaces 7, 7a in the form of inverted cones on which support complementary bearing surfaces 8, 8a of the kitten 20, said litters to be performed with a very large precision.
- the spring 10 acts alone to bring the balance shaft 3 back to its initial position.
- the spring 10 is dimensioned to have a limit of displacement so that beyond this limit, the axis of the balance comes into contact with abutments allowing said axis to absorb the shock, which the tigerons of the axis does not can do under pain of breaking.
- the spring 10 cooperates with the complementary inclined planes 7, 7a; 8, 8a to refocus the kitten 20.
- Such bearings have, for example been sold under the brand Incabloc®.
- These springs can be made of phynox or brass and are manufactured by traditional means of cutting.
- Shock absorbing bearings are also known in which the spring, the pierced stone and the counter-pivot stone form a whole.
- the advantage of these shock absorbing bearings is to be less expensive.
- the document US 3,942,848 describes a shock absorbing bearing comprising an annular body intended to be driven in a bridge or a plate.
- a spring formed to define a conical housing is attached to the body.
- This housing forms a truss inside which a conical pivot of the balance comes to engage.
- the pivoting conditions are unfavorable, metal-to-metal pivoting generating significant friction.
- a thrust type bearing according to this document US Pat. No. 3,942,848, cooperating with a conical pivot is poorly adapted for a timepiece of quality, the positioning of the balance being imprecise.
- the springs used in these shock-absorbing bearings are made of crystalline metal.
- the use of crystalline metals for these springs can cause some problems.
- the crystalline metals are characterized by weak mechanical properties such as limited elastic deformation which can lead to plastic deformation if the shocks are too high. This is amplified by the fact that the current springs can not be designed with complex shapes and, therefore, the elastic deformation of the current springs is very close to the elastic limit.
- This permanent deformation can also occur during the handling of said springs during their installation, when they are removed to operate lubrication or during retouching or after-sales service.
- Shock absorbing bearings are also known in which the spring, the pierced stone and the counter-pivot stone form a whole.
- the advantage of these shock absorbing bearings is to be less expensive.
- the fact of using a spring formed to define a conical housing has the disadvantage of having a radial clearance that depends on play or axial displacement.
- the conical shape of the spring makes it possible, in good time, to maintain the axis of the wheel. But when the springs deform, the spring moves axially and radially.
- the conical shape of the spring implies that a radial displacement is also present. It can be seen that the greater the axial displacement, the greater the radial clearance.
- the invention aims to overcome the disadvantages of the prior art by proposing to provide a shockproof timepiece system that is more shock resistant and allows better positioning of the axis of the damped wheel.
- the invention relates to the shockproof timepiece system cited above which is characterized in that said pivot system is arranged to absorb, at least in part, the shocks suffered by the timepiece mobile and in that the pivot system is formed of a single piece made of an at least partially amorphous metal alloy.
- a first advantage of the present invention is to allow shock systems to better withstand shocks. Indeed, amorphous metals have more interesting elastic characteristics.
- the elastic limit ⁇ ⁇ is increased, which makes it possible to increase the ratio ⁇ ⁇ / ⁇ so that the material sees the stress beyond which it does not return to its initial shape to increase. The pivot system can then undergo a greater stress before deforming plastically and the workpiece can thus suffer greater shocks without the shock system losing efficiency.
- Another advantage of the present invention is that it makes it possible to produce pivot systems. Indeed, as the amorphous metal is capable to withstand higher stresses before deforming plastically, it is possible to make smaller springs without losing resistance.
- said pivot system is made of totally amorphous material.
- said metal alloy comprises at least one metal element of the precious type or one of its alloys.
- said precious metal element comprises gold, platinum, palladium, rhenium, ruthenium, rhodium, silver, iridium or osmium.
- said pivot system is a pellet comprising an annular portion, a central portion and elastic arms connecting the central portion to the annular portion, the central portion comprising a recess so that the pivot which there is engaged can turn freely.
- the recess consists of a cylindrical portion having at its end a convex rounded portion.
- the amorphous metal is very easy to shape and allows the manufacture of complicated shapes with greater precision. This is due to the particular characteristics of the amorphous metal which can soften while remaining amorphous for a certain time in a given temperature range [T g - T x ] specific to each alloy. It is thus possible to shape it under a relatively low stress and at a low temperature then allowing the use of a simplified process such as forming while hot, while reproducing very precisely fine geometries because the viscosity of the alloy decreases strongly depending on the temperature in said temperature range [T g - T x ]. Therefore, it becomes possible to achieve complex and accurate pivot systems simply.
- FIG. 1 and 2 schematically show a shockproof timepiece system according to the prior art
- FIG. 3 to 5 show schematically a shockproof timepiece system according to the invention
- the present invention proceeds from the general inventive idea of providing a shock absorbing system having greater reliability and providing better positioning using an at least partially amorphous metal alloy.
- the damping bearing 101, 102 is shown in Figure 3; this illustrates a part 100 of timepiece provided with bearings according to the invention.
- the timepiece shown in Figure 3 comprises a frame comprising a support 103 in which a lower bearing 101 and an upper bearing 102 are mounted. These bearings 101, 102 are mounted in holes in said support 103.
- a wheel 105 for example a rocker, is pivotally mounted in the bearings. This wheel 105 comprises an axis 120 provided at its two ends with tigers 121 carrying pivots 122.
- the upper bearing 102 comprises an annular piece 127 in the form of a disc having a peripheral wall 128.
- This annular piece also comprises a flange 129 located on the surface of the disc and contiguous to the wall.
- This annular piece 127 is pierced with a central hole 130.
- the bearing 102 further comprises a pivoting means 126 'disposed in the housing formed by the peripheral wall 128 and the flange 129.
- the pivoting means 126' is placed on the rim 129 at its periphery so as to be suspended. This pivoting means 126 'can for example be engaged by force or glued to the annular piece 127.
- the lower bearing 101 is identical in design to the upper bearing 102, that is to say that it comprises an annular piece 124 in the form of a disk having a peripheral wall. This annular piece also comprises a rim located on the disk surface and contiguous to the wall. This annular piece 124 is pierced with a central hole 125.
- the bearing 102 further comprises a pivoting means 126 disposed in the housing formed by the peripheral wall and the rim. This pivoting means 126 may be engaged for example by force or glued to the annular piece 124.
- the dimensions of the lower bearing 101 will be smaller than those of the upper bearing 102 to show that the size of the bearing is easily modular and can be adapted to the needs, here reducing its size for example.
- the dimensions of the upper bearing 102 and the lower bearing 101 may be identical.
- the lower bearing 101 or upper 102 may be arranged so that the pivoting means 126, 126 'is directly driven into the support 103.
- Said bearing 101, 102 further comprises a part 200 in the form of a ring which serves to maintain the pivoting means 126, 126 'and a part 201 which is under the a disc having a peripheral flange 202 and pierced at its center with a hole 125, 130.
- This piece 201 in the form of a pierced disc is used as a stop and its flange 202 is used to ensure a suspended system.
- the pivoting means 126, 126 ' is thus held radially by the walls of the hole made in the support 103 and axially by the annular piece 200 and the pierced disk-shaped part 201.
- the pivoting means 126, 126 ', visible in Figure 4 are in the form of pellets comprising a full annular portion 126a, a central portion 126b provided with a non-through cylindrical recess 126c and elastic arms 126d.
- the non-through cylindrical recess 126c has a diameter selected so that the pivot 122 engaged therein can rotate freely with a minimum of clearance.
- the arms 126d are spirally wound so that they connect the central portion 126b to the annular portion 126a.
- the pivoting means 126 'of the upper bearing 102 is mounted in the annular part 127 of said upper bearing 102.
- the pivoting means 126 of the lower bearing 103 is mounted in the annular part 124 of said lower bearing 103.
- the two annular pieces 127, 124 are then mounted in the hole of the support 103 in sequence so as to allow the insertion of the wheel on its axis.
- the wheel is pivotally mounted by being engaged at its pivots 122 in the non-through cylindrical recesses 126c of the pivoting means 126, 126 'and at its tigger 121 in the zones provided by the support 103.
- the wheel 105 is subjected to a force which is proportional to the acceleration. This force is transmitted to the bearings by means of the pivots 122. The effect of this force is to deform the elastic arms 126d of the pivoting means 126, 126 'until the axis of the wheel comes to bear, through its tigger 121, against the wall of the holes of the annular pieces 127,124. The wheel is then stopped and blocked by a part of its axis having dimensions much larger than those pivots 122 not to damage the tigerons 121. As this part has dimensions much larger than those of the pivots, it is able to undergo much more important constraints without harmful consequences for the mobile.
- the elastic arms are dimensioned so that the tigger 121 come into contact with the annular parts when the acceleration reaches about 500g.
- the pivoting means 126, 126 ' are formed by three curved arms 126d whose attachment points, respectively to the annular portion 126a and the central portion 126b, are angularly offset by 120 degrees. It is obvious that the elastic function could be ensured with a different number of arms, or with other forms.
- the pivoting means 126, 126 comprise a conical recess so that the end of the tigeron can be inserted to allow a difference in amplitude between the different positions of the watch minimized.
- This conical recess known from patent EP 2 142 965 consists of a trapezoidal or cylindrical portion having at its end a convex rounded portion.
- the pivoting means 126, 126 ' are made of an amorphous material or at least partially amorphous.
- a material comprising at least one metal element is used.
- the material will be an at least partially amorphous or totally amorphous metal alloy. It will be understood by at least partially amorphous material that the material is capable of solidifying at least partially in the amorphous phase, that is to say that it is capable of losing at least locally all of its crystalline structure.
- the advantage of these amorphous metal alloys comes from the fact that, during their manufacture, the atoms of these amorphous materials do not arrange according to a particular structure as is the case for crystalline materials.
- the elastic limit ⁇ ⁇ is different.
- An amorphous metal is thus distinguished by an elastic limit ⁇ ⁇ higher than that of the crystalline metal by a factor of approximately two to three. This allows the amorphous metals to be able to undergo a greater stress before reaching the elastic limit ⁇ ⁇ .
- pivoting means 126, 126 have the advantage of having higher strength and durability compared to their crystalline metal counterparts.
- pivoting means 126, 126 ' several methods are possible. It may be envisaged to realize the pivoting means 126, 126 'using the properties of amorphous metals. Indeed, the amorphous metal has a great ease in shaping allowing the manufacture of parts with complicated shapes with greater precision. This is due to the particular characteristics of the amorphous metal which can soften while remaining amorphous for a certain time in a given temperature range [T g - T x ] of each alloy (for example for a Zr 41 24 Ti 13 77 alloy. Cu 12 7 Ni 10 Be 22 7 ,
- the use of such a material also makes it possible to reproduce very precisely fine geometries because the viscosity of the alloy decreases strongly as a function of the temperature in the temperature range [T g - T x ] and the alloy marries so all the details of the negative.
- the shaping is done around 300 ° C for a viscosity up to 10 3 Pa.s for a stress of 1 MPa, instead of a viscosity of 10 12 Pa. s at the temperature Tg.
- One method used is the hot forming of an amorphous preform.
- This preform is obtained by melting in a furnace the metallic elements constituting the amorphous alloy. This fusion is made under a controlled atmosphere with the aim of obtaining as low a contamination of the oxygen alloy as possible. Once these elements are melted, they are cast as semi-finished products, then cooled rapidly to maintain the at least partially amorphous state or phase.
- the hot forming is performed in order to obtain a final piece. This hot forming is carried out by pressing in a temperature range between the glass transition temperature T g of the amorphous material and the crystallization temperature T x of said amorphous material for a predetermined time to maintain a totally or partially amorphous structure. The goal is then to retain the characteristic elastic properties of amorphous metals.
- the different stages of definitive shaping of the pivoting means are then:
- the hot forming of the metal or amorphous alloy therefore makes it possible to produce complex and precise parts but also a good reproducibility of the part, which is a significant advantage for mass production such as that of the pivot means 126, 126 'of systems damper.
- the casting is used.
- This process involves casting the alloy obtained by melting the metal elements in a mold having the shape of the final piece. Once the mold filled, it is rapidly cooled to a temperature below T g to prevent crystallization of the alloy and thus obtain pivoting means of amorphous or partially amorphous metal.
- T g temperature below T g
- the advantage of casting an amorphous metal with respect to the casting of a crystalline metal is to be more precise.
- the solidification shrinkage is very low for an amorphous metal, less than 1% relative to that of the crystalline metals which is 5 to 7%.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pivots And Pivotal Connections (AREA)
- Sliding-Contact Bearings (AREA)
- Springs (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11729944.6A EP2585882B1 (fr) | 2010-06-22 | 2011-06-22 | Systeme antichoc de piece d'horlogerie |
JP2013515878A JP5657106B2 (ja) | 2010-06-22 | 2011-06-22 | 時計の衝撃吸収軸受 |
US13/806,405 US8926170B2 (en) | 2010-06-22 | 2011-06-22 | Timepiece anti-shock system |
CN201180040285.6A CN103124935B (zh) | 2010-06-22 | 2011-06-22 | 钟表抗震系统 |
HK13111571.9A HK1184241A1 (en) | 2010-06-22 | 2013-10-15 | Timepiece anti-shock system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01017/10 | 2010-06-22 | ||
CH10172010 | 2010-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011161139A1 true WO2011161139A1 (fr) | 2011-12-29 |
Family
ID=44628072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/060405 WO2011161139A1 (fr) | 2010-06-22 | 2011-06-22 | Systeme antichoc de piece d'horlogerie |
Country Status (6)
Country | Link |
---|---|
US (1) | US8926170B2 (fr) |
EP (1) | EP2585882B1 (fr) |
JP (1) | JP5657106B2 (fr) |
CN (1) | CN103124935B (fr) |
HK (1) | HK1184241A1 (fr) |
WO (1) | WO2011161139A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104062888A (zh) * | 2013-03-19 | 2014-09-24 | 尼瓦洛克斯-法尔股份有限公司 | 钟表机构组件 |
EP2781972A1 (fr) * | 2013-03-19 | 2014-09-24 | Nivarox-FAR S.A. | Pivot pour mécanisme d'horlogerie |
EP2884348A1 (fr) * | 2013-12-11 | 2015-06-17 | The Swatch Group Research and Development Ltd. | Système antichoc bi-matiere pour piece d'horlogerie |
WO2017055986A1 (fr) * | 2015-09-29 | 2017-04-06 | Patek Philippe Sa Geneve | Mouvement horloger comprenant un système de guidage flexible |
JP2017173341A (ja) * | 2013-05-24 | 2017-09-28 | ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド | 差し込み式フィッティングを備えたショックアブソーバー |
RU2679479C2 (ru) * | 2014-04-07 | 2019-02-11 | Ниварокс-Фар С.А. | Узел часов с использованием аморфного металлического сплава |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9292005B2 (en) * | 2011-12-12 | 2016-03-22 | The Swatch Group Research And Development Ltd | Shock resistant bearing for a timepiece |
EP2677370A1 (fr) * | 2012-06-21 | 2013-12-25 | ETA SA Manufacture Horlogère Suisse | Système antichoc à montage simplifié pour pièce d'horlogerie |
EP3067756B1 (fr) * | 2015-03-09 | 2017-11-22 | Nivarox-FAR S.A. | Ensemble pivotant pour une pièce d'horlogerie |
EP3182211A1 (fr) * | 2015-12-17 | 2017-06-21 | Nivarox-FAR S.A. | Pièce composite avec moyens élastiques sous contrainte |
EP3291025B1 (fr) * | 2016-08-30 | 2020-08-19 | Montres Breguet S.A. | Amortisseur de chocs multilames |
EP3422117B1 (fr) * | 2017-06-29 | 2020-05-27 | Nivarox-FAR S.A. | Palier amortisseur de choc pour un axe d'un mobile d'une pièce d horlogerie |
CH714819A2 (fr) * | 2018-03-21 | 2019-09-30 | Dominique Renaud Sa | Dispositif de fixation et de réglage d'un palier, notamment pour pièces d'horlogerie. |
EP3561606B1 (fr) * | 2018-04-27 | 2022-01-26 | The Swatch Group Research and Development Ltd | Protection antichoc d'un résonateur à lames a pivot rcc |
EP3671368B1 (fr) * | 2018-12-20 | 2022-11-23 | The Swatch Group Research and Development Ltd | Palier, notamment amortisseur de choc, et mobile tournant d'un mouvement horloger |
EP3800511B1 (fr) * | 2019-10-02 | 2022-05-18 | Nivarox-FAR S.A. | Axe de pivotement d'un organe réglant |
EP3929666A1 (fr) * | 2020-06-26 | 2021-12-29 | ETA SA Manufacture Horlogère Suisse | Système mobile tournant d'un mouvement horloger |
EP3929667A1 (fr) * | 2020-06-26 | 2021-12-29 | ETA SA Manufacture Horlogère Suisse | Système mobile tournant d'un mouvement horloger |
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2011
- 2011-06-22 CN CN201180040285.6A patent/CN103124935B/zh active Active
- 2011-06-22 US US13/806,405 patent/US8926170B2/en active Active
- 2011-06-22 WO PCT/EP2011/060405 patent/WO2011161139A1/fr active Application Filing
- 2011-06-22 JP JP2013515878A patent/JP5657106B2/ja active Active
- 2011-06-22 EP EP11729944.6A patent/EP2585882B1/fr active Active
-
2013
- 2013-10-15 HK HK13111571.9A patent/HK1184241A1/xx unknown
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CH199012A (de) * | 1936-06-24 | 1938-07-31 | C C Wakefield & Company Limite | Verfahren zur Erzeugung metallischer Gleitflächen auf der Reibung ausgesetzten Maschinenteilen. |
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Cited By (15)
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CN105051623A (zh) * | 2013-03-19 | 2015-11-11 | 尼瓦洛克斯-法尔股份有限公司 | 用于钟表机构的支枢装置 |
CN104062888A (zh) * | 2013-03-19 | 2014-09-24 | 尼瓦洛克斯-法尔股份有限公司 | 钟表机构组件 |
WO2014146832A1 (fr) | 2013-03-19 | 2014-09-25 | Nivarox-Far S.A. | Pivot pour mécanisme d'horlogerie |
US20140286139A1 (en) * | 2013-03-19 | 2014-09-25 | Nivarox-Far S.A. | Timepiece mechanism structure |
TWI610154B (zh) * | 2013-03-19 | 2018-01-01 | 尼瓦克斯 法爾公司 | 時計機構構造、形成該構造的方法、和機械式時計機芯 |
US9235191B2 (en) * | 2013-03-19 | 2016-01-12 | Nivarox-Far S.A. | Timepiece mechanism structure |
EP2781972A1 (fr) * | 2013-03-19 | 2014-09-24 | Nivarox-FAR S.A. | Pivot pour mécanisme d'horlogerie |
US9684283B2 (en) | 2013-03-19 | 2017-06-20 | Nivarox-Far S.A. | Pivot for timepiece mechanism |
JP2017173341A (ja) * | 2013-05-24 | 2017-09-28 | ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド | 差し込み式フィッティングを備えたショックアブソーバー |
WO2015086472A3 (fr) * | 2013-12-11 | 2015-08-06 | The Swatch Group Research And Development Ltd | Système antichoc de pièce d'horlogerie bi-matiere |
EP2884348A1 (fr) * | 2013-12-11 | 2015-06-17 | The Swatch Group Research and Development Ltd. | Système antichoc bi-matiere pour piece d'horlogerie |
US10012955B2 (en) | 2013-12-11 | 2018-07-03 | The Swatch Group Research And Development Ltd | Bimaterial anti-shock system for timepieces |
RU2679479C2 (ru) * | 2014-04-07 | 2019-02-11 | Ниварокс-Фар С.А. | Узел часов с использованием аморфного металлического сплава |
WO2017055986A1 (fr) * | 2015-09-29 | 2017-04-06 | Patek Philippe Sa Geneve | Mouvement horloger comprenant un système de guidage flexible |
EP3356891B1 (fr) * | 2015-09-29 | 2023-10-04 | Patek Philippe SA Genève | Mouvement horloger comprenant un système de guidage flexible |
Also Published As
Publication number | Publication date |
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EP2585882A1 (fr) | 2013-05-01 |
US20130188462A1 (en) | 2013-07-25 |
JP5657106B2 (ja) | 2015-01-21 |
JP2013529778A (ja) | 2013-07-22 |
US8926170B2 (en) | 2015-01-06 |
CN103124935B (zh) | 2015-05-13 |
HK1184241A1 (en) | 2014-01-17 |
EP2585882B1 (fr) | 2021-02-24 |
CN103124935A (zh) | 2013-05-29 |
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