EP2154582A1 - Procédé d'engrenage pour pièce d'horlogerie - Google Patents

Procédé d'engrenage pour pièce d'horlogerie Download PDF

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Publication number
EP2154582A1
EP2154582A1 EP08162475A EP08162475A EP2154582A1 EP 2154582 A1 EP2154582 A1 EP 2154582A1 EP 08162475 A EP08162475 A EP 08162475A EP 08162475 A EP08162475 A EP 08162475A EP 2154582 A1 EP2154582 A1 EP 2154582A1
Authority
EP
European Patent Office
Prior art keywords
pinion
substrate
pattern
mask
wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08162475A
Other languages
German (de)
English (en)
French (fr)
Inventor
Marco Verardo
Thierry Conus
Jean-Philippe Thiébaud
Jean-Bernard Peters
Pierre Cusin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP08162475A priority Critical patent/EP2154582A1/fr
Priority to JP2011522460A priority patent/JP5395174B2/ja
Priority to EP09806405.8A priority patent/EP2326995B1/fr
Priority to US13/059,216 priority patent/US9310770B2/en
Priority to KR1020117003449A priority patent/KR20110030692A/ko
Priority to CN2009801316418A priority patent/CN102124415B/zh
Priority to RU2011109457/28A priority patent/RU2498383C2/ru
Priority to PCT/EP2009/059477 priority patent/WO2010018051A1/fr
Priority to TW098125412A priority patent/TWI486729B/zh
Publication of EP2154582A1 publication Critical patent/EP2154582A1/fr
Priority to HK12100380.4A priority patent/HK1160233A1/xx
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0069—Watchmakers' or watch-repairers' machines or tools for working materials for working with non-mechanical means, e.g. chemical, electrochemical, metallising, vapourising; with electron beams, laser beams
    • 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
    • G04B13/026—

Definitions

  • the invention relates to a composite gear system, for example silicon - metal for a timepiece and more particularly to such a system comprising a fastening device able to avoid shear forces.
  • a composite watchmaking organ that is to say comprising two types of materials, such as a sprocket gear type gear system if one of the materials has a very restricted plastic zone
  • crystalline silicon, crystalline alumina or crystalline silica it is difficult to attach to a polygonal axis without breaking it.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a gear system comprising a fastening device to avoid the efforts of shear while being able to adapt to a cylindrical axis with circular section.
  • the invention relates to a gear system comprising a pinion and a toothed wheel mounted coaxially with respect to a pivoting axis, characterized in that it comprises an attachment device between said pinion and said wheel in order to avoid the relative displacement of one with respect to the other.
  • the invention also relates to a timepiece characterized in that it comprises a gear system according to one of the preceding variants.
  • the invention relates to a generally annotated gear system 1. It comprises an axis 3, a pinion 5 and a toothed wheel 7.
  • the pinion 5 and the wheel 7 are intended to be mounted coaxially on the same axis 3.
  • Such a gear system 1 may, for example, be applied to an escape wheel or a transmission mobile.
  • the invention can be applied to other watchmaking or non-watchmaking organs.
  • the axis 3 is substantially cylindrical circular section, that is to say symmetrically ideal to be mounted between two bearings (not shown) in the usual manner as explained above.
  • the pinion 5 comprises a main body of cylindrical shape whose section of the inner diameter substantially corresponds to the outer diameter of the axis 3.
  • the pinion 5 comprises wings 9 extending radially from said main body in order to cooperate with another toothed member (not shown).
  • the pinion 5 has about twenty wings 9, however, according to the application of the gear system 1, the number may be lower or higher.
  • the wheel 7 comprises a serge 11, a hub 13 pierced with a polygonal or cylindrical pinhole 15 and four arms 17 connecting said hub and said serge.
  • the serge 11 has a peripheral toothing 19 extending radially from said serge to cooperate with another toothed member (not shown).
  • the number of arms 17 which connects the serge 11 and the hub 13 may be lower or higher depending on the application.
  • the hub 13 preferably comprises an attachment device 21 intended to prevent the relative displacement of the wheel 7 relative to the pinion 5 in order to reduce the shear forces.
  • the attachment device 21 mainly comprises a cavity 23 formed at the hub 13 and intended to cooperate with the lower part of the pinion 5 by partial overlap.
  • the cavity 23 is hollowed out in the hub 13.
  • the cavity 23 has a shape at least partially corresponding to the section at the bottom of the pinion 5, that is to say a ring comprising a toothing intended for receiving by nesting at least a portion of the wings 9 and the main body of the pinion 5 over part of its height. It is therefore understood that when the lower part of the pinion 5 is slid into the cavity 23, the assembly limits the angular deflections between the pinion 5 and the wheel 7 thus making it possible to avoid the shear forces.
  • the impression 23 has a shape exactly corresponding to the section of the pinion 5.
  • the footprint 23 could comprise fewer teeth than the wings 9 of the pinion 5 while still allowing to avoid the shear forces .
  • Such a footprint could for example consist of a toothing having half the teeth than the pinion 5 has wings 9.
  • the gear system 1 is of the composite type, that is to say that it is formed by at least two types of materials.
  • one of the members is, preferably, formed of a micro-machinable material and the others of metal materials.
  • a micro-machinable material is used in order to benefit from sub-micron fabrication accuracy.
  • Such a material may comprise crystalline silicon, crystalline alumina or crystalline silica.
  • the other organs are preferably metal materials, when they did not need to have more accurate dimensions than is possible with said metal materials.
  • the wheel 7 is preferably formed from a micro-machinable material while the axis 3 and the pinion 5 are made from a metallic material such as, for example, steel or brass.
  • a configuration may in particular be useful for an application of the exhaust wheel type to obtain a set of impulse teeth 19 but also a 23 very precise fingerprint. Indeed, as visible at the figure 7 the wheel 7 has an intermediate engraving depth for the impression 23 and a total engraving for the rest of the organ.
  • the fastening device 21 further comprises an adhesive material mounted between the cavity 23 and the pinion 5 in order to improve the fastening force.
  • a material may be, for example, a solder or an adhesive.
  • the bond using an adherent material is generally performing in traction but poor performance in shear. It is therefore understood that by the configuration of the fastening device 21, the fastening force thus benefits from the tensile advantages of the adhering material and the shearing advantages of the partial overlap by the impression 23.
  • the adhering material may be, for example, mounted between the bottom of the cavity 23 and the underside of the pinion 5.
  • the adhering material may just as well be mounted between the periphery of the wings 9 and the toothing of the cavity 23. last configuration is particularly interesting when the footprint 23 is not exactly corresponding to the section of the pinion 5 as explained above.
  • the manufacturing process of the multi-level micro-machining material member will now be explained using the Figures 1 to 6 .
  • the member made of micro-machinable material is a gear wheel 7.
  • the hub 13 is shown in section.
  • other cavities are made outlets to delimit the hub 13, the arms 17, the serge 11 and its toothing 19.
  • a substrate 31 of micro-machinable material such as, preferably, crystalline silicon, crystalline alumina or crystalline silica is provided.
  • This step may comprise a phase of mechanical and / or chemical grounding of the substrate 31 in order to adapt the thickness e T of the substrate 31 to that of the final member, that is to say the wheel 7.
  • a first protective mask 33 is formed on the top of the substrate 31.
  • a step can be carried out by performing, for example, a selective oxidation on the surface of the substrate 31 in order to increase the oxide of silicon to form said mask to a predetermined height, as visible in FIG. figure 2 , which represents the pattern 32 of the cavity 23 to be etched on a part e 2 of the thickness of the substrate 31.
  • a second protective mask 35 is structured in overlap with that made in the second step.
  • Such a step can be carried out by carrying out a photolithography of a photosensitive resin.
  • a photoresist is deposited on the substrate 31 and the protective mask 33.
  • the resin is selectively exposed with radiation through a partially opaque mask.
  • the selectively illuminated photosensitive resin is developed so as to leave only a protective mask 35, as visible in FIG. figure 3 which represents the pattern 34 of the pinhole 15 and the other opening cavities of the wheel 7 to be etched in the thickness of the substrate 31.
  • the second mask 35 by selective oxidation on the surface of the substrate 31 for the purpose of growing silicon oxide to form said mask to a predetermined height.
  • anisotropic etching is carried out on the substrate 31 according to the pattern 34 of the second protective mask 35.
  • the attack may be of the dry or wet type.
  • a method of the deep reactive ion etching type (better known by the abbreviation "DRIE” from the terms “Deep Reactive Ion Etching") will be used.
  • DRIE deep reactive ion etching type
  • the attack makes it possible to begin the etching of the axis hole 15 but also of the other emerging cavities of the wheel 7.
  • the substrate 31 is etched according to the pattern 34 on a part e 1 of its thickness e T.
  • the second mask 35 is removed. Depending on the nature of the second mask 35, this may consist in respectively removing the structured resin or etching the silicon oxide layer until the pattern 32 is discovered.
  • a second anisotropic etching is carried out on the substrate 31 according to the pattern 32 of the first protection mask 33.
  • the etching can also be of the dry or wet type.
  • the second attack makes it possible to continue the etching of the axis hole 15 but also of the other opening cavities of the wheel 7 and to start the etching of the impression 23.
  • the substrate 31 is etched throughout its thickness e T according to the pattern 34 and on a part e 2 of its thickness according to the pattern 32.
  • the section of the pattern 34 of the second mask 35 is smaller than that of the pattern 32 of the first mask 33. This makes it possible to engrave the pattern 34 alone and then etch the patterns 34 and 32 together. In a seventh and last time, the finished wheel 7 is released from the substrate 31.
  • the pinion 5-pin 3 assembly is mounted on the watchmaking member 7 made according to the manufacturing method explained above, in the example a toothed wheel, in order to form the composite gear system 1
  • the pinion 5-pin 3 assembly is brought closer to the member 7 so that the lower end of the pin 3 is opposite the pin hole 15 of the pin. wheel 7 as shown in the figure 7 .
  • the axis 3 slides through the pinhole 15 to friction as shown in FIG. figure 8 until, in a third phase, the bottom of the pinion 5 engages in the cavity 23 hollowed out in the hub 13 of the wheel 7.
  • an adhesive material can be used to improve the fastening force between the pinion 5 and the wheel 7.
  • two additional phases could be realized.
  • An intermediate phase between the second and third phases of the final assembly process could it consists in depositing said material in the bottom of the impression 23.
  • Such a material could be a solder and / or an adhesive such as a polymer adhesive.
  • a final phase could then follow the third phase and would activate the adherent material such as, for example, by melting said solder and / or by polymerizing said adhesive.
  • the first could consist in depositing said material between the teeth of the cavity 23 and the wings 9 of the pinion 5.
  • a material could also be a solder and / or an adhesive such as a polymer adhesive.
  • the second final phase could then enable the adhering material to be activated, for example by melting said solder and / or by polymerizing said adhesive.
  • a composite gear system 1 of the sprocket gear type that can be integrated in a timepiece and that comprises a wheel 7 made of micro-machinable material whose serge 11 has a toothing 19 and whose hub 13 is bonded, advantageously , to the axis 3 - pinion 5 assembly by means of the fastening device 21.
  • the recess 23 may be at least partially projecting from the hub 13. In fact, this would allow the increase of the contact zone between the axis 3 and the hub 13, which would allow the improvement of the guiding of the wheel 7 with respect to the axis 3. Said contact zone could even correspond to the total height of the wheel 7, the footprint 23 would then be entirely projecting from the hub 13 of the wheel 7 instead of being at least partially hollow.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Gears, Cams (AREA)
  • Micromachines (AREA)
  • Weting (AREA)
EP08162475A 2008-08-15 2008-08-15 Procédé d'engrenage pour pièce d'horlogerie Withdrawn EP2154582A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP08162475A EP2154582A1 (fr) 2008-08-15 2008-08-15 Procédé d'engrenage pour pièce d'horlogerie
CN2009801316418A CN102124415B (zh) 2008-08-15 2009-07-23 钟表的齿轮系统
EP09806405.8A EP2326995B1 (fr) 2008-08-15 2009-07-23 Système d'engrenage pour une pièce d'horlogerie
US13/059,216 US9310770B2 (en) 2008-08-15 2009-07-23 Gear system for a timepiece
KR1020117003449A KR20110030692A (ko) 2008-08-15 2009-07-23 시계용 기어 시스템
JP2011522460A JP5395174B2 (ja) 2008-08-15 2009-07-23 時計のギヤシステム
RU2011109457/28A RU2498383C2 (ru) 2008-08-15 2009-07-23 Система шестерен для часов
PCT/EP2009/059477 WO2010018051A1 (fr) 2008-08-15 2009-07-23 Système d'engrenage pour une pièce d'horlogerie
TW098125412A TWI486729B (zh) 2008-08-15 2009-07-28 時計的齒輪系統
HK12100380.4A HK1160233A1 (en) 2008-08-15 2012-01-12 Gearing system for a timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08162475A EP2154582A1 (fr) 2008-08-15 2008-08-15 Procédé d'engrenage pour pièce d'horlogerie

Publications (1)

Publication Number Publication Date
EP2154582A1 true EP2154582A1 (fr) 2010-02-17

Family

ID=40428254

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08162475A Withdrawn EP2154582A1 (fr) 2008-08-15 2008-08-15 Procédé d'engrenage pour pièce d'horlogerie
EP09806405.8A Active EP2326995B1 (fr) 2008-08-15 2009-07-23 Système d'engrenage pour une pièce d'horlogerie

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09806405.8A Active EP2326995B1 (fr) 2008-08-15 2009-07-23 Système d'engrenage pour une pièce d'horlogerie

Country Status (9)

Country Link
US (1) US9310770B2 (ru)
EP (2) EP2154582A1 (ru)
JP (1) JP5395174B2 (ru)
KR (1) KR20110030692A (ru)
CN (1) CN102124415B (ru)
HK (1) HK1160233A1 (ru)
RU (1) RU2498383C2 (ru)
TW (1) TWI486729B (ru)
WO (1) WO2010018051A1 (ru)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120322268A1 (en) * 2011-06-14 2012-12-20 Samsung Electronics Co., Ltd. Method of forming a pattern
EP2579104A3 (fr) * 2011-10-07 2013-08-21 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Procédé de réalisation d'une pièce d'horlogerie composite

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5872181B2 (ja) * 2011-01-27 2016-03-01 セイコーインスツル株式会社 機械部品、機械組立体および時計
JP2012215183A (ja) * 2011-03-31 2012-11-08 Seiko Instruments Inc 機械部品組立体、機械部品組立体の製造方法、および時計
JP6222725B2 (ja) * 2013-07-25 2017-11-01 セイコーインスツル株式会社 時計用歯車、脱進機構、時計用ムーブメントおよび機械式時計
EP2937311B1 (fr) * 2014-04-25 2019-08-21 Rolex Sa Procédé de fabrication d'un composant horloger renforcé, composant horloger et pièce d'horlogerie correspondants
DE102014117436B3 (de) * 2014-11-27 2015-11-05 Lange Uhren Gmbh Schrittschalteinrichtung
CH712261B1 (fr) * 2016-03-16 2020-11-30 Gfpi S A Système d'affichage pour pièce d'horlogerie.
JP2018155523A (ja) * 2017-03-16 2018-10-04 セイコーインスツル株式会社 時計部品、ムーブメントおよび時計
EP3495894B1 (fr) * 2017-12-05 2023-01-04 Rolex Sa Procédé de fabrication d'un composant horloger
US11686381B1 (en) 2020-05-08 2023-06-27 Cornerstone Research Group, Inc. Composite gear assembly and method of making same

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JPS59135385A (ja) * 1983-01-25 1984-08-03 Seiko Epson Corp 指針表示式時計の番車スベリ機構
JPS61253488A (ja) * 1985-05-02 1986-11-11 Seiko Epson Corp 番車構造
EP0732635A1 (fr) * 1995-03-17 1996-09-18 C.S.E.M. Centre Suisse D'electronique Et De Microtechnique Sa Pièce de micro-mécanique et procédé de réalisation
CH694465A5 (de) * 2004-05-10 2005-01-31 Prec Engineering Ag Verfahren zum Bearbeiten von metallischen Körpern, insbesondere von Uhrenbestandteilen.
EP1705533A1 (fr) * 2005-03-22 2006-09-27 Patek Philippe S.A. Assemblage d'une pièce sur un axe
EP1835050A1 (fr) * 2006-03-15 2007-09-19 Doniar S.A. Procédé de fabrication par LIGA-UV d'une structure métallique multicouche à couches adjacentes non entièrement superposées, et structure obtenue

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59135385A (ja) * 1983-01-25 1984-08-03 Seiko Epson Corp 指針表示式時計の番車スベリ機構
JPS61253488A (ja) * 1985-05-02 1986-11-11 Seiko Epson Corp 番車構造
EP0732635A1 (fr) * 1995-03-17 1996-09-18 C.S.E.M. Centre Suisse D'electronique Et De Microtechnique Sa Pièce de micro-mécanique et procédé de réalisation
CH694465A5 (de) * 2004-05-10 2005-01-31 Prec Engineering Ag Verfahren zum Bearbeiten von metallischen Körpern, insbesondere von Uhrenbestandteilen.
EP1705533A1 (fr) * 2005-03-22 2006-09-27 Patek Philippe S.A. Assemblage d'une pièce sur un axe
EP1835050A1 (fr) * 2006-03-15 2007-09-19 Doniar S.A. Procédé de fabrication par LIGA-UV d'une structure métallique multicouche à couches adjacentes non entièrement superposées, et structure obtenue

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120322268A1 (en) * 2011-06-14 2012-12-20 Samsung Electronics Co., Ltd. Method of forming a pattern
US9048192B2 (en) * 2011-06-14 2015-06-02 Samsung Electronics Co., Ltd. Method of forming a pattern
US9508644B2 (en) 2011-06-14 2016-11-29 Samsung Electronics Co., Ltd. Method of forming a pattern
EP2579104A3 (fr) * 2011-10-07 2013-08-21 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Procédé de réalisation d'une pièce d'horlogerie composite

Also Published As

Publication number Publication date
TW201011481A (en) 2010-03-16
TWI486729B (zh) 2015-06-01
EP2326995B1 (fr) 2013-06-19
WO2010018051A1 (fr) 2010-02-18
US20110141860A1 (en) 2011-06-16
CN102124415B (zh) 2012-12-19
RU2498383C2 (ru) 2013-11-10
JP2012500386A (ja) 2012-01-05
JP5395174B2 (ja) 2014-01-22
EP2326995A1 (fr) 2011-06-01
RU2011109457A (ru) 2012-09-20
US9310770B2 (en) 2016-04-12
HK1160233A1 (en) 2012-08-10
CN102124415A (zh) 2011-07-13
KR20110030692A (ko) 2011-03-23

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