EP3859449A1 - Leitende schnur für spirale - Google Patents

Leitende schnur für spirale Download PDF

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Publication number
EP3859449A1
EP3859449A1 EP20154530.8A EP20154530A EP3859449A1 EP 3859449 A1 EP3859449 A1 EP 3859449A1 EP 20154530 A EP20154530 A EP 20154530A EP 3859449 A1 EP3859449 A1 EP 3859449A1
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
conductive layer
watch
deposition method
hairspring
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.)
Pending
Application number
EP20154530.8A
Other languages
English (en)
French (fr)
Inventor
Sylvain Huot-Marchand
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 SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP20154530.8A priority Critical patent/EP3859449A1/de
Priority to US17/146,793 priority patent/US20210240141A1/en
Priority to JP2021006883A priority patent/JP7164641B2/ja
Priority to KR1020210013657A priority patent/KR20210098388A/ko
Priority to CN202110127601.9A priority patent/CN113267987A/zh
Publication of EP3859449A1 publication Critical patent/EP3859449A1/de
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/066—Manufacture of the spiral spring
    • 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
    • G04D3/0074—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment
    • G04D3/0089—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment for components of the regulating mechanism, e.g. coil springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only
    • C23C24/04—Impact or kinetic deposition of particles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges

Definitions

  • the present invention relates to an oscillating system for a clockwork movement.
  • the present invention relates in particular to an oscillating system comprising a clock hairspring from which electrostatic charges can be eliminated.
  • the material used for making the balance springs is usually an alloy based on iron, cobalt, nickel and chromium. Ductile, such an alloy must resist corrosion. Recent developments suggest making the balance springs out of silicon. Due to their very small dimensions and the friction with the air and between the turns, the spirals tend to become charged with static electricity, so that the turns stick to each other. The balance springs are then unusable as they are.
  • the current methods aiming to discharge the electrostatic charges in the movement via the eyebolt involve an electrically conductive adhesive binding the eyebolt and balance spring. It is generally the mixture of a photo- or UV-curable adhesive and conductive particles. But these particles interfere with the crosslinking of the whole. This can lead to partial crosslinking and therefore piton-hairspring separation, which is detrimental to the operation of the oscillator.
  • Another solution is to increase the crosslinking time significantly, but this goes against industrial production rates.
  • the electrostatic charges can be located elsewhere than on the hairspring but in the environment close to the latter, for example a component made of insulating material initially charged during assembly or charged during movement.
  • the present invention provides an oscillating system for a clockwork movement comprising a clockwork balance spring from which electrostatic charges can be eliminated.
  • said watch hairspring comprises at least one inner coil fixed by a ferrule and at least one outer coil fixed by said eyebolt.
  • said at least one first electrically conductive layer is deposited on the outside of said peak.
  • said at least one first electrically conductive layer can be easily deposited.
  • the deposition of said first electrically conductive layer is carried out by an atomizer.
  • said atomizer comprises said at least one first electroconductive layer in liquid form surrounded by a sheathing gas so as to be unidirectional.
  • said atomizer is unidirectional.
  • said first electrically conductive layer comprises a continuous electrically conductive layer and / or a plurality of discrete electrically conductive layers so as to form a continuous electrically conductive layer.
  • said at least one dimension is the length of said watch hairspring.
  • the figure 1 illustrates a method of depositing 500 of an electrically conductive layer on an oscillating system 100 of a watch movement comprising a watch balance spring 101 with at least one inner coil fixed by a ferrule and at least one outer coil 105 fixed by a stud 102.
  • One of the steps of said deposition process 500 is the supply 510 of said oscillating system 100. This is followed by the deposition of at least one first electrically conductive layer 110 by an atomizer 900 electrically connecting said at least one outer coil 105 and said pin 102. . preferably, said first electrically conductive layer 110 includes a continuous electrically conductive layer 111 and / or a plurality of discrete electrically conductive layers 115 so as to form a continuous electrically conductive layer 111.
  • Said at least one first electrically conductive layer 110 more particularly, said continuous electrically conductive layer 111 is deposited and / or said plurality of discrete electrically conductive layers 115 are deposited on the outside of said peak 102, more exactly on the part of said peak 102 being on the outside. of said watch hairspring 101 because it is easier to reach than the part which faces the turns of said watch hairspring 101.
  • Said atomizer 900 is configured to deposit said at least one first electroconductive layer 110 in liquid form surrounded by a sheath gas 119 so as to be unidirectional and therefore deposit said first electroconductive layer 110 on said at least one dimension, preferably the length of said watch balance spring 101, and representing at least 1%, in particular 5%, preferably 10% and / or at most 90%, in particular at most 75%, preferably at most 50% of at least one dimension of said watch balance spring 101.
  • said atomizer 900 being unidirectional, the deposition of said at least one first electroconductive layer 110 may only partially cover the width of said watch hairspring 101 but perhaps not the whole of the width of said watch hairspring 101 which makes it possible to avoid a change in characteristic of said watch balance spring 101 such as for example its inertia or its frequency, or a modification of its elastic response.
  • the deposition process is economical by virtue of its simplicity, and the little material deposited.
  • this deposition process does not expose employees to potentially dangerous particles during said preparation of these glues or during deposition due to their inhalation. because the spraying is rarely directional or even unidirectional.
  • Another disadvantage to conventional spraying is that this can pollute nearby moving components such as the escapement or the balance axle and therefore disrupt their tribological functions.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
EP20154530.8A 2020-01-30 2020-01-30 Leitende schnur für spirale Pending EP3859449A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20154530.8A EP3859449A1 (de) 2020-01-30 2020-01-30 Leitende schnur für spirale
US17/146,793 US20210240141A1 (en) 2020-01-30 2021-01-12 Conductive balance-spring cord
JP2021006883A JP7164641B2 (ja) 2020-01-30 2021-01-20 導電性ひげぜんまいコード
KR1020210013657A KR20210098388A (ko) 2020-01-30 2021-01-29 전도성 밸런스 스프링 코드
CN202110127601.9A CN113267987A (zh) 2020-01-30 2021-01-29 导电游丝索

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20154530.8A EP3859449A1 (de) 2020-01-30 2020-01-30 Leitende schnur für spirale

Publications (1)

Publication Number Publication Date
EP3859449A1 true EP3859449A1 (de) 2021-08-04

Family

ID=69411287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20154530.8A Pending EP3859449A1 (de) 2020-01-30 2020-01-30 Leitende schnur für spirale

Country Status (5)

Country Link
US (1) US20210240141A1 (de)
EP (1) EP3859449A1 (de)
JP (1) JP7164641B2 (de)
KR (1) KR20210098388A (de)
CN (1) CN113267987A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4332687A1 (de) * 2022-08-30 2024-03-06 ETA SA Manufacture Horlogère Suisse Spiralfeder einer unruh-spiralfeder einer mechanischen uhr

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1837722A2 (de) * 2006-03-24 2007-09-26 ETA SA Manufacture Horlogère Suisse Mikromechanisches Bauteil aus Isoliermaterial und Verfahren zu dessen Herstellung
WO2014023584A1 (fr) * 2012-08-07 2014-02-13 Eta Sa Manufacture Horlogere Suisse Système oscillant pour mouvement d'horlogerie

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5489417A (en) * 1992-09-02 1996-02-06 Olin Corporation Spray cast copper-manganese-zirconium alloys having reduced porosity
WO2010102186A1 (en) * 2009-03-06 2010-09-10 Georgia-Pacific Chemicals Llc Adhesive compositions for bonding composites
EP3081996B1 (de) * 2015-04-16 2019-02-27 Montres Breguet S.A. Spirale aus mikrobearbeitbarem material mit isochronismus-korrektur
JP6587832B2 (ja) 2015-05-26 2019-10-09 アルファーデザイン株式会社 液体吐出装置、スプレーパス設定方法、プログラム
EP3432083A1 (de) * 2016-02-25 2019-01-23 ETA SA Manufacture Horlogère Suisse Spiralfeder für mechanisches uhrwerk
CH714775B1 (fr) * 2018-05-14 2019-09-13 Eta Sa Mft Horlogere Suisse Piton pour la fixation d'un ressort spiral d'un mouvement d'horlogerie et procédés de fabrication d'un tel piton.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1837722A2 (de) * 2006-03-24 2007-09-26 ETA SA Manufacture Horlogère Suisse Mikromechanisches Bauteil aus Isoliermaterial und Verfahren zu dessen Herstellung
WO2014023584A1 (fr) * 2012-08-07 2014-02-13 Eta Sa Manufacture Horlogere Suisse Système oscillant pour mouvement d'horlogerie

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4332687A1 (de) * 2022-08-30 2024-03-06 ETA SA Manufacture Horlogère Suisse Spiralfeder einer unruh-spiralfeder einer mechanischen uhr
EP4332686A1 (de) * 2022-08-30 2024-03-06 ETA SA Manufacture Horlogère Suisse Spiralfeder für eine spiralunruh-einheit einer uhrwerke

Also Published As

Publication number Publication date
JP7164641B2 (ja) 2022-11-01
US20210240141A1 (en) 2021-08-05
KR20210098388A (ko) 2021-08-10
JP2021120672A (ja) 2021-08-19
CN113267987A (zh) 2021-08-17

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