EP3118692B1 - Befestigung der spiralfeder eines uhrwerks durch verklebung - Google Patents

Befestigung der spiralfeder eines uhrwerks durch verklebung Download PDF

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Publication number
EP3118692B1
EP3118692B1 EP15176978.3A EP15176978A EP3118692B1 EP 3118692 B1 EP3118692 B1 EP 3118692B1 EP 15176978 A EP15176978 A EP 15176978A EP 3118692 B1 EP3118692 B1 EP 3118692B1
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EP
European Patent Office
Prior art keywords
end plate
assembly
sub
shoulder
timepiece
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
EP15176978.3A
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English (en)
French (fr)
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EP3118692A1 (de
Inventor
Marc Stranczl
Marco Verardo
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
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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 EP15176978.3A priority Critical patent/EP3118692B1/de
Priority to TW105115988A priority patent/TWI690784B/zh
Priority to US15/162,726 priority patent/US9671756B2/en
Priority to KR1020160075598A priority patent/KR101821044B1/ko
Priority to JP2016123328A priority patent/JP6228632B2/ja
Priority to CN201610561851.2A priority patent/CN106353997B/zh
Publication of EP3118692A1 publication Critical patent/EP3118692A1/de
Application granted granted Critical
Publication of EP3118692B1 publication Critical patent/EP3118692B1/de
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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
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
    • G04D3/0041—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism for 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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/14—Mainsprings; Bridles therefor
    • G04B1/145—Composition and manufacture of the 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
    • 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
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D1/00—Gripping, holding, or supporting devices
    • G04D1/04—Tools for setting springs
    • G04D1/042—Tools for setting springs for coil springs in regulating mechanisms
    • 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
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
    • G04D3/0038—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism for balances
    • 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

Definitions

  • the invention relates to a sub-set of watches, comprising a pin arranged to be attached to a cock of a watch movement, said subassembly comprising a spiral spring comprising successively and in this order a spiral wound portion , an outer turn, a connection zone, and an end plate of section greater than that of said outer turn, said end plate ending in a distal end opposite said spirally wound portion, said peak comprising, between an inlet and an outlet, a housing which is arranged for, in a first free state of said subassembly, to enclose with play said end plate of said spiral spring with a tangential mobility in a tangential direction with respect to said external coil at said connection zone, and for, in a second immobilized state of said subassembly, immobilizing said end plate to which said housing is joined by a web of adhesive bonding them to one another, and in said second immobilized state, said layer of adhesive covers at least one shoulder of change of section of said end plate, and where, in said
  • the invention also relates to an oscillator comprising at least one such subset.
  • the invention further relates to an exhaust mechanism comprising at least one such subset.
  • the invention also relates to a watch comprising such an escape mechanism, and / or comprising at least one such subassembly.
  • the invention relates to the field of clock oscillator mechanisms comprising at least one elastic return means constituted by a spiral spring, and more particularly the case where such a spiral spring is made of silicon or silicon oxide, or DLC, or other similar micro-mechanical material made according to a "MEMS" method or the like.
  • the invention is more particularly concerned with the attachment of the external part of the spiral spring, which in conventional clock oscillators, in particular with a balance spring, is generally attached to a stud itself attached to a cock.
  • the outer part of the spiral spring is usually glued in the piton.
  • the bonding position is generally not very reproducible, because of the withdrawals of the glue which are not too.
  • the quality of the bonding is difficult to control after execution, other than by destructive control performed on a sample. But, because of the low reproducibility of the bonding phenomena, even if the operation is fixed, that is to say with strictly controlled range parameters, there is no evidence that this sample is representative of the production. The risk is in a separation of the hairspring relative to the peak once the glue is frozen.
  • the use of a spiral spring having an end plate allows a relative improvement of the bonding, insofar as the use of a wafer more widely dimensioned than the turns of the spring makes it possible to have a contact surface of more important collage. Indeed, the strength of the bonding is not good when the section and the dimensions of the component to be bonded, here the spiral spring, decrease too strongly.
  • the wafer is necessary to ensure a certain contact surface to the adhesive ply, which can allow a mechanical strength, which is essential since the chemical resistance alone can not guarantee the strength of the components to be assembled.
  • the document DE 23 33 446 A1 in the name of JUNGHANS GmbH describes a sprung balance, the outer end of the spiral spring is placed on a protruding portion of a plastic plate, and held in position by plasticization of this plastic material.
  • the end of the spring can be placed in a slot in this protruding part, whose shoulders can be plasticized by ultrasonic welding.
  • the attachment is improved with the cutting of a notch in an edge of the end of the spring in its attachment area.
  • the welding is reversible, and can be removed during a repair, and traditional methods of bonding are possible.
  • the invention proposes to ensure a better service life of the connection between the pin and the wafer of the spiral assembled by gluing.
  • the invention favors the use of a wafer called "shape", that is to say having a particular shape, optimized to ensure better mechanical strength of the bonded assembly, including traction.
  • shape that is to say having a particular shape, optimized to ensure better mechanical strength of the bonded assembly, including traction.
  • the invention relates to a timepiece subassembly according to claim 1.
  • the invention also relates to an oscillator comprising at least one such subset.
  • the invention further relates to an exhaust mechanism comprising at least one such subset.
  • the invention also relates to a watch comprising such an escape mechanism, and / or comprising at least one such subassembly.
  • the invention ensures a better in service of the connection between the pin and the plate of the spiral assembled by gluing, on the basis of a good mechanical strength, which is compensated for the chemical resistance which, alone, can not be sufficient to guarantee the holding of the components to be assembled, and in particular with regard to the tear resistance in the direction tangential to the outer turn of the spiral spring, where the return torque is applied.
  • the invention relates to a timepiece subassembly 100, comprising a pin 20 arranged to be fixed to a cock 40 of a clockwork movement 300.
  • This subassembly 100 comprises a spiral spring 1.
  • This spiral spring 1 comprises successively and in this order a spirally wound portion, an outer turn 2, a connection zone 11, and an end plate 10 of section greater than that of the outer turn 2, the end plate 10 terminating at a distal end 12 opposite the spiral wound portion, and the connecting region 11 having a sectional change between the outer coil 2 and the end plate 10.
  • the peak 20 comprises, between an inlet 23 and an outlet 24, a housing 21 which is arranged for, in a first free state of the subassembly 100 to contain with play the end plate 10 of the spiral spring 1 with a mobility tangentially in a tangential direction T with respect to the outer turn 2 at the connection zone 11, and for a second immobilized state of the subassembly 100 to immobilize the end plate 10 to which the housing 21 is joined by a layer of glue 30 solidifying them to one another.
  • the adhesive ply 30 covers at least one shoulder 5 for changing the section of the end plate 10.
  • connection zone 11 also covers the connection zone 11. This arrangement only concerns applications where the point of definition of the active length of the spiral is situated on another zone of the outer turn 2 than the connection zone 11.
  • connection zone 11 defines the active length of the hairspring
  • the variant of the hairspring is preferred. figure 3 . Indeed, if glue is to be deposited on the connection zone 11, the useful length of the spiral is changed, and therefore the frequency and the walking of the spiral are modified, which is not desired, it does not therefore no glue is required at the connection area 11.
  • the ply 30 of adhesive constitutes a mechanical seal of the spiral spring 1 at least in a longitudinal direction L of the housing 21 substantially parallel to the tangential direction T of the spiral spring 1.
  • the ply 30 of adhesive covers the connection zone 11, and constitutes a mechanical seal of the spiral spring 1 at least in a longitudinal direction L of the housing 21 substantially parallel to the tangential direction T of the spiral spring 1.
  • the figure 1 shows a piton horizontally in the movement; of course the piton can be positioned vertically vertically, the benefit provided by the invention is the same.
  • the housing 21 is large enough that the adhesive ply 30 completely surrounds at least a portion of the end plate 10, this part comprising one or more shoulders 5, 11 in the case of the sole figure 1 but not in the more general case of the figure 3 , and again at least one eye 6, with in the unstacked free state, sufficient clearance between the housing 21 and this particular part of the end plate 10 so that, after the deposition of the adhesive ply 30, that it surrounds this part of the wafer on all sides, so that the ply 30 of glue then constitutes a mechanical seal of the spiral spring 1 in the housing 21 in all degrees of freedom.
  • the housing 21 comprises at least one projecting or retracted volume arranged to form at least one stop of the adhesive ply 30, or comprises, on its inner walls 25, 26, grooves or notches, or is made with a coarse surface state, with a roughness Ra greater than 12 micrometers, so as to ensure a mechanical retention of the adhesive ply 30
  • the end plate 10 may comprise variable sections perpendicular to the longitudinal direction L.
  • the end plate 10 has an eye 6, and where the outer contour of the end plate 10 is of substantially constant cross-section, it is the cavity 6 which determines a resulting section smaller than that of the plate 10 outside the area of 6.
  • the section of the end plate 10 can decrease, continuously and / or in stages, from its outer distal end 12 to the outer coil 2.
  • the end plate 10 has at least one shoulder 5 at which the section of the end plate 10 varies, this shoulder 5 being distinct from the connection zone 11 between the outer coil 2 and the end plate 10 and, in the second immobilized state, the adhesive ply 30 covers this shoulder 5, while the connection zone 11 remains external to the adhesive ply 30.
  • the end plate 10 comprises at least one eye 6, 8, communicating with the adhesive ply 30 in the second immobilized state.
  • this eye 6, 8 is housed in the thickness of this stop 13 of maximum section of the end plate 10.
  • the end plate 10 constitutes a loop 4 comprising at least one eye 6 in which the sheet 30, in the second immobilized state, penetrates only in an anchoring direction A substantially perpendicular to the tangential direction T.
  • the end plate 10 constitutes a hook 7 having at least one eye 8 open on the side of the outer coil 2, and having a fold 9 at its end farthest from the outer coil 2.
  • end plate 10 Different geometries of the end plate 10 are likely to be well suited to the implementation of the invention: or with protruding profiles in the form of a cross, of "L", with a cylindrical end, in the shape of a tee, with shoulders 5 forming surfaces perpendicular to the tangential direction and arranged to oppose a maximum tensile strength in this direction and to the spiral portion of the spiral spring 1, or again with reentrant profiles, not necessarily directly opposed, so not to weaken too much the end plate 10 by a too small section.
  • the invention is particularly suitable for fixing a spiral spring 1 of silicon and / or silicon oxide, or DLC, or other similar micro-mechanical material made by a "MEMS" method or the like.
  • the invention also relates to an oscillator 200 comprising at least one such subassembly 100.
  • the invention also relates to an escape mechanism 300 comprising at least one such subassembly 100.
  • the invention also relates to a watch 400 comprising such an escapement mechanism 200, or / and comprising at least one subassembly 100.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Springs (AREA)
  • Micromachines (AREA)
  • Connection Of Plates (AREA)

Claims (16)

  1. Uhrenunterbaugruppe (100), umfassend ein Spiralklötzchen (20), das angeordnet ist zur Befestigung an einem Unruhkloben (40) eines Uhrwerks, wobei die Unterbaugruppe (100) eine Spiralfeder (1) umfasst, die nacheinander und in dieser Reihenfolge einen spiralförmig gewickelten Teil, eine äußere Windung (2), einen Anschlussbereich (11) und eine Endplatte (10) mit einem Querschnitt größer als jener der äußeren Windung (2) umfasst, wobei die Endplatte (10) in einem distalen Ende (12) gegenüber dem spiralförmig gewickelten Teil endet, wobei das Spiralklötzchen (20) zwischen einem Eingang (23) und einem Ausgang (24) einen Aufnahmeraum (21) enthält, der angeordnet ist, in einem ersten, freien Zustand der Unterbaugruppe (10) die Endplatte (10) der Spiralfeder (1) mit Spiel und mit einer tangentialen Beweglichkeit in einer tangentialen Richtung (T) in Bezug auf die äußere Windung (2) auf Höhe des Anschlussbereichs (11) aufzunehmen und in einem zweiten, gehaltenen Zustand der Unterbaugruppe (100) die Endplatte (10) zu sichern, mit der der Aufnahmeraum (21) durch ein Klebefeld (30), das sie aneinander befestigt, verbunden ist, wobei in dem zweiten, gehaltenen Zustand das Klebefeld (30) mindestens eine querschnittsverändernde Schulter (5) der Endplatte (10) abdeckt und wobei in dem zweiten, gehaltenen Zustand das Klebefeld (30) eine mechanische Verankerung der Spiralfeder (1) mindestens in einer longitudinalen Richtung (L) des Aufnahmeraums (21) im Wesentlichen parallel zu der tangentialen Richtung (T) der Spiralfeder (1) bildet, dadurch gekennzeichnet, dass die Endplatte (10) mindestens eine Öse (6; 8) aufweist, die mit dem Feld (30) in dem zweiten, gehaltenen Zustand verbunden ist.
  2. Uhrenunterbaugruppe (100) nach Anspruch 1, dadurch gekennzeichnet, dass das Klebefeld (30) mindestens eine querschnittsverändernde Schulter (5) der Endplatte (10) abdeckt und den Anschlussbereich (11) nicht abdeckt.
  3. Uhrenunterbaugruppe (100) nach Anspruch 1, dadurch gekennzeichnet, dass das Klebefeld (30) in dem zweiten, gehaltenen Zustand den Anschlussbereich (11) abdeckt.
  4. Uhrenunterbaugruppe (100) nach Anspruch 1, dadurch gekennzeichnet, dass das Klebefeld (30) eine mechanische Verankerung der Spiralfeder (1) in dem Aufnahmeraum (21) in allen Freiheitsgraden bildet.
  5. Uhrenunterbaugruppe (100) nach Anspruch 1, dadurch gekennzeichnet, dass die Endplatte (10) senkrecht zu der longitudinalen Richtung (L) veränderliche Querschnitte aufweist.
  6. Uhrenunterbaugruppe (100) nach Anspruch 5, dadurch gekennzeichnet, dass der Querschnitt der Endplatte (10) ab dem äußeren distalen Ende (12) zu der äußeren Windung (2) kontinuierlich und/oder stufenweise abnimmt.
  7. Uhrenunterbaugruppe (100) nach Anspruch 6, dadurch gekennzeichnet, dass die Endplatte (10) mindestens eine Schulter (5) aufweist, auf deren Höhe sich der Querschnitt der Endplatte (10) verändert, wobei die Schulter (5) von dem Anschlussbereich (11) verschieden ist, und dass in dem zweiten, gehaltenen Zustand das Klebefeld (30) die Schulter (5) abdeckt, während der Anschlussbereich (11) außerhalb des Klebefeldes (30) verbleibt.
  8. Uhrenunterbaugruppe (100) nach Anspruch 5, dadurch gekennzeichnet, dass die Endplatte (10) mindestens eine erste (5A) und eine zweite (5B) der Schultern (5) aufweist, auf deren Höhe sich der Querschnitt der Endplatte (10) ändert, wobei die erste Schulter (5A) und die zweite Schulter (5B) miteinander einen Anschlag (13) mit maximalem Querschnitt der Endplatte (10) begrenzen, wobei die erste Schulter (5A) und die zweite Schulter (5B) von dem Anschlussbereich (11) verschieden sind.
  9. Uhrenunterbaugruppe (100) nach Anspruch 8, dadurch gekennzeichnet, dass die erste Schulter (5A) und die zweite Schulter (5B) von dem distalen Ende (12) der Verbindungsplatte (10) verschieden sind.
  10. Uhrenunterbaugruppe (100) nach Anspruch 8, dadurch gekennzeichnet, dass die Öse (6; 8) in dem Anschlag (13) mit maximalem Querschnitt der Endplatte (10) aufgenommen ist.
  11. Uhrenunterbaugruppe (100) nach Anspruch 1, dadurch gekennzeichnet, dass die Endplatte (10) eine Schlaufe (4) bildet, die mindestens eine Öse (6) besitzt, in die das Feld (30) in dem zweiten, gehaltenen Zustand nur in einer Verankerungsrichtung (A), die zu der tangentialen Richtung (T) im Wesentlichen senkrecht ist, eindringt.
  12. Uhrenunterbaugruppe (100) nach Anspruch 1, dadurch gekennzeichnet, dass die Endplatte (10) einen Haken (7) bildet, der mindestens eine Öse (8) aufweist, die auf Seiten der äußeren Windung (2) offen ist, und an ihrem Ende, das von der äußeren Windung (2) am weitesten entfernt ist, einen Umschlag (9) aufweist.
  13. Uhrenunterbaugruppe (100) nach Anspruch 1, dadurch gekennzeichnet, dass die Spiralfeder (1) aus Silicium und/oder Siliciumoxid hergestellt ist.
  14. Oszillatormechanismus (200), umfassend mindestens eine Unterbaugruppe (100) nach Anspruch 1.
  15. Hemmungsmechanismus (300), umfassend mindestens eine Unterbaugruppe (100) nach Anspruch 1.
  16. Uhr (400), umfassend einen Hemmungsmechanismus (300) nach Anspruch 15 und/oder umfassend mindestens eine Unterbaugruppe (100) nach Anspruch 1.
EP15176978.3A 2015-07-16 2015-07-16 Befestigung der spiralfeder eines uhrwerks durch verklebung Active EP3118692B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP15176978.3A EP3118692B1 (de) 2015-07-16 2015-07-16 Befestigung der spiralfeder eines uhrwerks durch verklebung
TW105115988A TWI690784B (zh) 2015-07-16 2016-05-23 藉由黏合劑接合之時計彈簧的緊固
US15/162,726 US9671756B2 (en) 2015-07-16 2016-05-24 Fastening of a timepiece spring by adhesive bonding
KR1020160075598A KR101821044B1 (ko) 2015-07-16 2016-06-17 접착제 결합에 의한 타임피스 스프링의 체결
JP2016123328A JP6228632B2 (ja) 2015-07-16 2016-06-22 接着剤接合による時計用ゼンマイの固定
CN201610561851.2A CN106353997B (zh) 2015-07-16 2016-07-15 通过粘接剂结合紧固钟表游丝

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15176978.3A EP3118692B1 (de) 2015-07-16 2015-07-16 Befestigung der spiralfeder eines uhrwerks durch verklebung

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EP3118692A1 EP3118692A1 (de) 2017-01-18
EP3118692B1 true EP3118692B1 (de) 2018-12-26

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US (1) US9671756B2 (de)
EP (1) EP3118692B1 (de)
JP (1) JP6228632B2 (de)
KR (1) KR101821044B1 (de)
CN (1) CN106353997B (de)
TW (1) TWI690784B (de)

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JP2017026601A (ja) 2017-02-02
KR101821044B1 (ko) 2018-01-22
TW201712451A (zh) 2017-04-01
KR20170009717A (ko) 2017-01-25
CN106353997B (zh) 2018-11-20
JP6228632B2 (ja) 2017-11-08
US9671756B2 (en) 2017-06-06
CN106353997A (zh) 2017-01-25
EP3118692A1 (de) 2017-01-18
US20170017204A1 (en) 2017-01-19
TWI690784B (zh) 2020-04-11

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