EP3267265A2 - Verfahren zur montage eines uhrenbauteils, und so erhaltenes uhrenbauteil - Google Patents

Verfahren zur montage eines uhrenbauteils, und so erhaltenes uhrenbauteil Download PDF

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Publication number
EP3267265A2
EP3267265A2 EP17179264.1A EP17179264A EP3267265A2 EP 3267265 A2 EP3267265 A2 EP 3267265A2 EP 17179264 A EP17179264 A EP 17179264A EP 3267265 A2 EP3267265 A2 EP 3267265A2
Authority
EP
European Patent Office
Prior art keywords
spring
tongue
flange
conformation
component
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.)
Granted
Application number
EP17179264.1A
Other languages
English (en)
French (fr)
Other versions
EP3267265B1 (de
EP3267265A3 (de
Inventor
Sylvain Farine
Philippe Vaucher
Vincent von Niederhäusern
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.)
Rolex SA
Original Assignee
Rolex 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 Rolex SA filed Critical Rolex SA
Publication of EP3267265A2 publication Critical patent/EP3267265A2/de
Publication of EP3267265A3 publication Critical patent/EP3267265A3/de
Application granted granted Critical
Publication of EP3267265B1 publication Critical patent/EP3267265B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • 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

Definitions

  • the invention relates to a clock spring.
  • the invention also relates to a clock spring clamp.
  • the invention also relates to a spring device comprising such a spring and such a flange.
  • the invention also relates to a cylinder, a movement or a timepiece comprising such a spring or such a flange or such a spring device.
  • the invention finally relates more generally to a method for producing a two-component watch assembly and a method for producing an elastic watch component.
  • the invention also relates generally to a watch assembly obtained according to the assembly method of realization.
  • a slippery flange is well known in the watchmaking field, in order to avoid overly mechanically stressing the mainspring during excessive winding.
  • the assembly of the flange on the spring is traditionally done by welding or riveting.
  • Patent CH346163 discloses a cylinder spring brake spring having a boss for use as a fastening rivet to the mainspring.
  • Document CH343890 discloses fixing the flange to the mainspring by a welding point.
  • the document GB1386612 discloses a barrel spring clip by means of a cut and folded tongue, integral with the wall of the drum, which is slid into a slot in the outer end of the spring. This solution does not allow the sliding of the outer end of the spring in the drum and has the risk of breaking the spring in case of excessive winding.
  • the object of the invention is to provide a method for producing a watch assembly that makes it possible to overcome the drawbacks mentioned above and to improve the assembly methods known from the prior art.
  • the invention provides a method for producing a simple and reliable assembly which is particularly applicable to the assembly of a barrel spring and a flange.
  • a method of producing a watch assembly according to the invention is defined by claim 1.
  • a spring according to the invention is defined by claim 11.
  • a flange according to the invention is defined by claim 12.
  • a spring device according to the invention is defined by claim 13.
  • a barrel according to the invention is defined by claim 16.
  • a movement and a timepiece according to the invention are defined by claim 17.
  • a method of producing a watch component according to the invention is defined by claim 18.
  • a first embodiment of a timepiece 300 is described below with reference to Figures 1 to 10 .
  • the timepiece is for example a watch, in particular a wristwatch.
  • the timepiece comprises a watch movement 200, in particular a mechanical movement.
  • the movement can be automatic or manual winding.
  • the movement includes a barrel 100.
  • the barrel comprises meanwhile a spring device 1 cylinder assembled.
  • the barrel-flange spring assembly is advantageously made without other third connecting element to bind the barrel spring and the flange, especially without welding, solder, rivet or glue.
  • Riveting is not optimal, and is therefore suitable only for small series. Indeed, the required assembly accuracy is particularly difficult to control. Moreover, the head of the rivet involves a negative space to maintain the power reserve.
  • the first conformation comprises a tongue 20 and the second conformation 30 comprises at least one cutout or opening 31, preferably two cutouts or openings 31, 32.
  • the use of two cutouts or openings 31 and 32 is particularly interesting. Indeed, it allows for a precise and reliable assembly. This can be ensured by the fact that the tongue fits into the two cutouts as described below.
  • the tongue may comprise a rounded free end 21.
  • the tongue may comprise flanks 22, 23 parallel or substantially parallel or forming an angle ⁇ of between 0 ° and 40 °, preferably between 1 ° and 20 °, or between 2 ° and 5 °.
  • the two sides of the tongue are not parallel to facilitate assembly and maintain the assembly in the transverse axis.
  • the tongue may have a generally rectangular or trapezoidal shape with possibly a rounded free end.
  • the length Lo of the tongue may be between 1 mm and 3 mm, preferably between 1 mm and 2 mm or between 0.5 times and 2 times the width of the spring, preferably between 0.6 times and 1 times the width of the spring.
  • the width La of the tongue can be between 0.2mm and 1.2mm, preferably between 0.3mm and 0.8mm or between 0.1 times and 0.8. times the width of the spring, preferably between 0.2 times and 0.5 times the width of the spring.
  • the ratio of the length Lo of the tongue to the width La of the tongue may be between 2 and 5, preferably between 2.5 and 4.
  • a first variant embodiment of the tongue is represented on the figure 2 .
  • the tongue generally has an elongate shape. Preferably, its free end is rounded.
  • a second embodiment of the tongue is shown on the figure 9 . It differs from the first variant in that the ends of the cutout defining the tongue of the holes 201 are provided. These holes are designed to limit the stress concentration zones at the cutting ends and thus prevent the materials from breaking.
  • a third embodiment of the tongue is shown on the figure 10 . It differs from the first variant in that the width La of the tongue varies by forming a shoulder 202. This shoulder is for example located substantially in the middle of the tongue and allows to separate the functions of obstacle and deformation of the tongue. Indeed, only the part 203 of small width will cooperate with at least one of the blanks of the flange penetrating into it. The other portion 204 of the tongue will allow greater deformation of the tongue to facilitate the introduction thereof into the flange while limiting the stress concentration at the bending point at the end of the cut.
  • the barrel spring 2 is preferably made of an amorphous alloy or a CoNiCr-based alloy or an electro-formed alloy based on nickel.
  • the barrel spring comprises a first tongue-shaped conformation 20 provided to cooperate with at least one cutout 30 on the flange 3 to assemble, including assembling by obstacle, the spring and the flange.
  • the barrel spring flange 3 is preferably made of an amorphous alloy. As seen above, the flange has a second conformation 30 in the form of at least one cutout 31, 32 provided to cooperate with the tongue 20 on the spring 2 to assemble, including assembling by obstacle, the spring and the flange.
  • the spring device is such that the first conformation comprises at least one cut, preferably two cuts, and the second conformation comprises a tongue.
  • the barrel spring thus comprises a first conformation in the form of at least one cutout provided so as to cooperate with a tongue on the flange to assemble, in particular to assemble by obstacle, the spring and the flange and the flange therefore has a second conformation.
  • tongue shape provided to cooperate with at least one cutout on the spring to assemble, including assembling by obstacle, the spring and the flange.
  • a groove is made in the barrel drum, so as to avoid the friction of the tongue (formed on the flange) against the drum and the wear of this tongue which exceeds the outside of the spring device.
  • a second embodiment of a timepiece 300 ' is described below with reference to the figure 11 .
  • the timepiece is for example a watch, in particular a wristwatch.
  • the timepiece comprises a watch movement 200 ', in particular a mechanical movement.
  • the movement can be automatic or manual winding.
  • the movement includes a 100 'barrel.
  • the barrel comprises meanwhile a spring 2 'of barrel assembled to a barrel shaft 9.
  • the barrel comprises a first conformation 20' on the spring and a second conformation 30 'on the shaft.
  • the first conformation and the second conformation are arranged so as to cooperate to assemble, in particular to assemble by obstacle, the spring and the shaft.
  • the barrel-shaft spring assembly is advantageously made without other third connecting element to bind the mainspring and the shaft, in particular without welding, solder, rivet or glue.
  • the first conformation comprises a tab 20 'and the second conformation comprises a cutout 30'.
  • the tongue has for example an end portion of the substantially trapezoidal tongue designed to cooperate with complementary shaped openings made in a groove 31 'on the bung the barrel shaft.
  • the openings are for example hollowed in the flanks 32 'of the groove 31'.
  • the barrel spring 2 ' is preferably made of an amorphous alloy or a CoNiCr-based alloy or an electro-formed nickel-based alloy.
  • the watch assembly does not include other connecting elements of the two components, in particular no rivet, glue, solder or solder.
  • elastic deformation of the at least one element made of elastic material in the vicinity of the tongue is carried out, without deforming the tongue, in particular an extension of the at least one element into elastic material between two pins 40, 41 to bring out the tongue on a side B of the spring.
  • This step is for example represented on the figure 5 .
  • One of the tenons 40 is rotated to wind the spring in an open ring 60. Because of the deformation in the vicinity of the tongue (without deformation of the tongue which remains in its rest state), the tongue has a shape, including a curvature, different from that of its vicinity. This makes it possible to highlight the tongue on the spring.
  • the elastic deformation of the at least one element of elastic material in the vicinity of the tongue is maintained at least as long as the tongue is deformed by a mechanical action, that is to say at least until after the end the exercise of the mechanical action on the tongue.
  • a mechanical action that is to say at least until after the end the exercise of the mechanical action on the tongue.
  • the watchmaker pushes the tongue, in particular with the aid of a tool 50, to make it protrude from the face A of the spring.
  • the flange can be presented to the tongue.
  • the watchmaker may indeed bring the flange against the spring by threading or sliding the tongue into the cutout 31.
  • the tongue when it is released, it is pressed against the flange to block it.
  • the end of the tongue is then placed in the cutout 32 of the flange, as shown in FIG. figure 8 .
  • the implementation of the elastic deformation of the at least one element of elastic material is performed during an operation spring strapping, especially at the end of the strapping operation.
  • the assembly of the flange is carried out during the strapping operation, aimed at winding the prestressed spring in the open ring 60, the winding of the spring starting with the inner end. (shelly) and ending at the outer end presenting the tongue.
  • the method of producing the spring comprises a step of electroforming the spring, this step integrates the production of the tongue in the spring.
  • the method of producing the spring comprises a step of shaping and fixing the element of elastic material.
  • the fixing step is important to obtain a good functioning of the spring, whatever the material used.
  • an amorphous alloy an example of a fixing method is described in the application WO2011069273 .
  • the fixing can be carried out conventionally, hot in a vacuum oven.
  • the method of producing the spring described above is implemented in the step of providing the spring comprising at least one element of elastic material provided with the tongue of the method for producing a watch assembly described above.
  • the invention makes it possible to form, in the barrel spring, a tongue intended to be used as a barb which will be housed in cuts made in the flange, during the step of strapping the barrel spring.
  • This allows to hang the flange to the spring non-permanently (that is to say, the assembly can be undone) and without preterite the mechanical properties of the materials of the spring and the flange and more generally without preteriter the properties mechanical materials of the two assembled watch components.
  • the assembly is very resistant.
  • the invention makes it possible, when the spring device is out of the barrel, to separate the spring flange. Moreover, as previously seen, the assembly is done without heating and reducing the internal stresses at the assembly. Indeed, to achieve a weld, it is necessary to press the two parts against each other before welding and this can induce local stresses that can be important.
  • the barrel spring it is possible to assemble the barrel spring to a flange mechanically, without resorting to thermal means (welding or brazing), nor to an assembly part (rivet).
  • the link between the two components is elastic, reversible and without impairing the properties of assembled components.
  • tongue means any part of a strip of material delimited by an open curve of cutting of the strip according to the thickness of the strip and by a segment connecting the two ends of the open curve.
  • the tongue is completely surrounded by material forming the rest of the band.
  • the tongue is formed by a cutting of the spring or the flange without falling material (other than the material on the cutting curve).
  • the width of the spring 2 or the flange at the tongue is not reduced to the width of the tongue, but it is greater than the width of the tongue.
  • the material forming the spring or the flange is present on either side of the tongue relative to the longitudinal direction of the spring or the flange.
  • the tongue does not form the end of the spring or the flange.
  • the flange is preferably a sliding flange.
  • barrel spring device or “assembled barrel spring” means an assembly comprising a barrel spring and a flange.
  • the barrel can be part of a finishing train chain or be integrated, for example, within an additional module such as a ring.
  • spring or “mainspring” means a spring blade having undergone a fixing treatment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Electric Clocks (AREA)
EP17179264.1A 2016-07-04 2017-07-03 Verfahren zur montage eines uhrenbauteils, und so erhaltenes uhrenbauteil Active EP3267265B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16177751 2016-07-04

Publications (3)

Publication Number Publication Date
EP3267265A2 true EP3267265A2 (de) 2018-01-10
EP3267265A3 EP3267265A3 (de) 2018-04-04
EP3267265B1 EP3267265B1 (de) 2025-12-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17179264.1A Active EP3267265B1 (de) 2016-07-04 2017-07-03 Verfahren zur montage eines uhrenbauteils, und so erhaltenes uhrenbauteil

Country Status (4)

Country Link
US (2) US10935931B2 (de)
EP (1) EP3267265B1 (de)
JP (1) JP7133909B2 (de)
CN (1) CN107577133A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3575885B1 (de) * 2018-06-01 2022-09-21 Nivarox-FAR S.A. Federhaus für uhren
US12167500B2 (en) 2018-11-28 2024-12-10 Interdigital Patent Holdings, Inc. Methods to leverage non-cellular device capabilities
US20220276609A1 (en) * 2019-04-15 2022-09-01 Rolex Sa Cam-type timepiece component
JP2025518210A (ja) * 2022-05-31 2025-06-12 パテック フィリップ ソシエテ アノニム ジュネーブ 金属ガラス・ストリップをレーザ切断することによって部品を製造する方法
JP7445810B1 (ja) 2023-07-05 2024-03-07 東亜道路工業株式会社 タイヤ付着抑制剤、舗装用アスファルト乳剤組成物及びその製造方法、並びに舗装体
JP7459353B1 (ja) 2023-07-05 2024-04-01 日本製紙株式会社 剥離防止剤

Citations (3)

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Publication number Priority date Publication date Assignee Title
CH288794A (fr) * 1948-12-31 1953-02-15 H Brown Foster Dispositif de liaison d'un barillet et d'un ressort moteur.
EP2133756A2 (de) * 2008-06-10 2009-12-16 Rolex Sa Zugfeder für Federhaus
WO2012010941A1 (fr) * 2010-07-21 2012-01-26 Rolex S.A. Composant horloger comprenant un alliage métallique amorphe

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CH288794A (fr) * 1948-12-31 1953-02-15 H Brown Foster Dispositif de liaison d'un barillet et d'un ressort moteur.
EP2133756A2 (de) * 2008-06-10 2009-12-16 Rolex Sa Zugfeder für Federhaus
WO2012010941A1 (fr) * 2010-07-21 2012-01-26 Rolex S.A. Composant horloger comprenant un alliage métallique amorphe

Also Published As

Publication number Publication date
JP2018031769A (ja) 2018-03-01
EP3267265B1 (de) 2025-12-17
US20210165367A1 (en) 2021-06-03
JP7133909B2 (ja) 2022-09-09
US10935931B2 (en) 2021-03-02
CN107577133A (zh) 2018-01-12
US20180004159A1 (en) 2018-01-04
EP3267265A3 (de) 2018-04-04

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