EP4160321A1 - Schutzring für uhrwerk und uhrwerk, das diesen schutzring umfasst - Google Patents

Schutzring für uhrwerk und uhrwerk, das diesen schutzring umfasst Download PDF

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Publication number
EP4160321A1
EP4160321A1 EP21199919.8A EP21199919A EP4160321A1 EP 4160321 A1 EP4160321 A1 EP 4160321A1 EP 21199919 A EP21199919 A EP 21199919A EP 4160321 A1 EP4160321 A1 EP 4160321A1
Authority
EP
European Patent Office
Prior art keywords
circle
watch movement
axial
axial end
housings
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
EP21199919.8A
Other languages
English (en)
French (fr)
Inventor
Julien Christan
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 EP21199919.8A priority Critical patent/EP4160321A1/de
Priority to US17/863,640 priority patent/US20230100861A1/en
Priority to KR1020220092651A priority patent/KR102658952B1/ko
Priority to JP2022126928A priority patent/JP7441902B2/ja
Priority to CN202222594013.9U priority patent/CN218957039U/zh
Priority to CN202211199354.4A priority patent/CN115877692A/zh
Publication of EP4160321A1 publication Critical patent/EP4160321A1/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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • G04B5/181—The bearing of the rocking bar is in the centre of rotation combined with a support or guide arrangement
    • 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
    • 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
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/0409—Fixed mounting relating to wall clocks and pendulums
    • G04B37/0418—Fixed mounting relating to wall clocks and pendulums with shock damping means
    • 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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • 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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements
    • 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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/007—Antimagnetic alloys
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/08—Housings

Definitions

  • the invention relates to the field of watchmaking and relates more particularly to a circle for protecting a watch movement against magnetic fields and against the possible impacts of an oscillating weight.
  • the present invention also relates to a watch movement comprising said protective circle.
  • the present invention applies to any mechanical or electronic watch movement comprising an oscillating mass intended to provide mechanical power in order to supply energy to a motor member of a watch, more particularly to wind a mechanical watch movement or to supply electricity an electronic circuit via a generator.
  • the object of the present invention is to provide a solution for protecting the watch movement of a watch both from the effects of magnetic fields and from the possible impacts of the oscillating mass caused by shocks to the watch by solving the aforementioned drawbacks.
  • the invention relates to an antimagnetic and shockproof protection ring for a watch movement, intended to be fixed to a watch movement.
  • the hoop comprises a tubular-shaped body extending between a first and a second axial end and is made of a material having ferromagnetic properties. It is adapted to constitute, via the first axial end, a stop limiting the angular displacement around a radial axis of an oscillating mass connected to the watch movement.
  • the terms “radial axis” designate an axis perpendicular to the axis of rotation of the oscillating mass.
  • the circle makes it possible to protect the watch movement, both against possible impacts of the oscillating mass when it is subjected, following an impact on the watch, to an angular displacement around a perpendicular axis to its axis of rotation, and against the effects of magnetic fields.
  • the circle also has the effect of supporting the oscillating mass, during an impact on the watch, in order to preserve from possible deformation or possible breakage, the elements allowing it to be fixed to the watch movement.
  • the solution of the invention being constituted by a circle of tubular shape, it has a very small size within the watch movement.
  • Another advantage resulting from the use of a circle of tubular shape lies in the fact that the possible impacts of the oscillating weight on the field of the circle are not or are barely visible to the naked eye due to the small size. cross section of said field.
  • the transverse dimension of said field constitutes the thickness of the body of the circle.
  • the circle is one-piece, so that it can be easily and inexpensively manufactured.
  • the circle can be made by stamping operations followed by bending operations.
  • the invention may also include one or more of the following characteristics, taken separately or in all technically possible combinations.
  • the circle comprises an axial groove extending between the first and the second axial end of said circle, said axial groove separating two longitudinal ends of said circle.
  • the axial groove extends from the first or the second axial end to the other.
  • the axial groove extends from the first or the second axial end towards the other.
  • the axial groove extends from the second axial end towards the first axial end, a bridge of material connecting the two longitudinal ends of the circle to one another at the level of the first axial end.
  • the circle comprises fixing members extending from its second axial end, intended to be engaged in housings made in the watch movement, so as to fix the circle with said watch movement.
  • the hoop has elastic properties and is configured so as to be in a mechanically constrained state when the fixing members are engaged in the housings, so that said fixing members respectively exert tightening forces against said accommodations.
  • each fixing member has the shape of a tongue, a first portion of which, called the “proximal portion”, is oriented in an axial direction in a direction opposite to the first end of the circle and a second portion of which, called the “proximal portion”.
  • distal portion connected to the proximal portion, extends in a radial plane of the circle and towards the outside of the latter.
  • a fixing member is arranged diametrically opposite the axial groove.
  • a fixing member is arranged at each of the longitudinal ends of the circle.
  • the circle includes a chamfer at the junction between its first axial end and each of its longitudinal ends.
  • the circle comprises a fixing member in the form of a radial collar extending from the second end, intended to be arranged to press against the watch movement.
  • the present invention relates to a watch movement comprising a cage formed by a plate on which is fixed a set of bridges, and a mobile oscillating weight in rotation relative to said cage and extending radially beyond the set of bridges.
  • the watch movement further comprises a circle as described previously, configured so as to encircle the set of bridges and to extend axially towards the oscillating weight.
  • the present invention advantageously makes it possible to be able to assemble the entire watch movement before the introduction of said watch movement into a middle part of a watch, thanks to the design of the circle which allows contained dimensions of the latter.
  • the plate forms, via a so-called “lower face” surface, a radial shoulder with respect to the set of bridges, housings receiving the fixing members being made on said lower face.
  • the fasteners are welded to the housings, for example by laser.
  • the fasteners are glued to the housings.
  • the fixing members cooperate with the housings by elastic interlocking.
  • FIG. 1 represents a circle 10 of antimagnetic and shockproof protection for a watch movement 20, according to a first aspect of the present invention.
  • the circle 10 is intended to be fixed against a watch movement 20, as shown by the figures 2 and 3 , itself intended to be housed in an internal volume of a middle part of a watch case (not shown).
  • the watch movement 20 comprises an oscillating mass 23 mobile in rotation and adapted to supply energy to a member of the watch movement 20, such as a barrel or a generator depending on whether the watch movement is of the mechanical type or of the electronic type, in a known manner. by the skilled person.
  • the hoop 10 comprises a body of tubular shape, extending axially between two ends, respectively called “first and second axial ends” 11 and 12 in the remainder of the text.
  • the body of the circle 10 has an internal face 13 intended to be arranged opposite a cage of the watch movement 20.
  • the body of the circle 10 has a cross section substantially circular.
  • the cage of the watch movement 20 comprises, in a way known per se by those skilled in the art, a plate 21 on which is fixed a set of bridges 22.
  • the circle 10 is, as shown in particular by the figures 2 and 3 , configured so as to encircle the set of bridges 22 of the watch movement 20.
  • the circle 10 is configured so that the internal face 13 of the body of the circle 10 is arranged facing the periphery of the set of bridges 22.
  • the circle 10 is advantageously made of a material having ferromagnetic properties, so as to have a high permeability to magnetic fields. Such a material may consist of soft iron.
  • the circle 10 makes it possible to channel the lines of magnetic fields surrounding the watch movement 20, and therefore to give it protection against the effects of said magnetic fields.
  • the circle 10 may advantageously comprise, in the preferred embodiment of the invention, an axial groove 14, for example crossing radially, extending between the first and second axial ends 11 and 12 of said circle 10.
  • the axial groove 14 separates two longitudinal ends of said circle 10 arranged facing each other.
  • An advantage of the axial groove 14, when it is through, as shown in the figures, is to allow the passage of a rod 24 for adjustment or winding, or a push button or more generally any other organ control connected to the watch movement 20.
  • the axial groove 14 extends from one of the first and second axial ends 11 and 12 to the other.
  • the axial groove 14 can therefore pass through axially.
  • Such a feature participates in particular in facilitating the attachment of the circle 10 to the watch movement 20 as described in more detail below.
  • the axial groove 14 can only extend from the second axial end 12 towards the first axial end 11, a bridge of material connecting the two longitudinal ends of the circle 10 at the first axial end 11.
  • the axial groove 14 contributes to conferring elastic properties on the circle 10.
  • the circle 10 may comprise several axial grooves 14 distributed at a distance from one another or at a distance from each other.
  • the circle 10 when it is fixed to the watch movement 20, the circle 10 is adapted to constitute, by its first axial end 11, a stop limiting the angular displacement of the oscillating mass 23 around an axis perpendicular to its axis of rotation. , so that said oscillating mass 23 cannot come into contact with a bridge of the set of bridges 22 of the watch movement 20 and so as to preserve from possible deformation or possible breakage, the elements allowing the fixing of said oscillating weight 23 to the watch movement 20.
  • the oscillating mass 23 is likely to impact the field of the circle 10.
  • Such a movement can be generated when the watch movement 20, and more particularly the watch which includes it, is subjected to a shock, in particular a shock with a component in an axial direction.
  • the possible impacts of the oscillating mass 23 being made on the field of the circle if they generate marks or scratches, these are not or are very little visible to the naked eye, insofar as said field has a relatively small transverse dimension, typically of the order of a few tenths of a millimeter.
  • the invention is suitable for watch movements comprising an oscillating mass 23 extending radially beyond the set of bridges 22, as illustrated on the figures 1 and 2 . Indeed, as the side view of the figure 2 , the oscillating weight 23 is then cantilevered facing the circle 10, which can therefore act as a stop.
  • hoop 10 may be configured to extend axially beyond bridge assembly 22, towards oscillating mass 23, as shown in the figures below. figures 2 and 3 .
  • the ring 10 comprises fixing members 15 allowing it to be mechanically linked without any degree of freedom with the watch movement 20.
  • the fixing members 15 of the circle 10 can extend from the second axial end 12. These fixing members 15 are intended to be engaged in housings 25 made in the watch movement 20 , and in particular in the plate 21 of the latter, so as to fix together the circle 10 and the watch movement 20.
  • each fixing member 15 has the shape of a tongue, a first portion of which, called the “proximal portion” 150, is oriented in an axial direction in a direction opposite to the first end 11 of the circle 10 and a second portion of which, called the “distal portion”.
  • « 151 connected to the proximal portion 150, extends in a radial plane of the circle 10 and towards the outside of the latter.
  • the circle 10 is preferably configured so as to be in a constrained state when it is arranged around the watch movement 20 and each fixing member 15 is engaged in a housing 25.
  • said circle 10 exerts clamping forces on watch movement 20, which makes it possible to ensure that said circle 10 is held in position relative to watch movement 20, and thus considerably facilitates the fixing of circle 10 to watch movement 20.
  • This technical effect is allowed thanks to the elastic property of the circle 10.
  • At least some of the distal portions 151 are adapted to exert clamping forces on the housing 25 in which they are intended to be engaged.
  • the hoop 10 comprises three fixing members 15, one of which is arranged at each of the longitudinal ends of the hoop 10, on either side of the axial groove 14, and of which one is arranged diametrically opposite said axial groove 14.
  • the attachment points of the circle 10 are distributed in a balanced manner around the watch movement 20.
  • the fixing members 15 are dimensioned so that the second end 12 of the circle 10 is arranged at a distance from the plate 21, so that the distal portions 151 of the fixing members 15 are ensured to bear against the housings 25.
  • This arrangement makes it easier to attach the circle 10 to the watch movement 20.
  • the plate 21 has a face called the “lower face” 210 facing the set of bridges 22, opposite a face called the “upper face”.
  • the plate 21 of the watch movement 20 extends radially beyond the set of bridges 22 and forms, via a peripheral portion of its lower face 210, a radial shoulder with respect to the set of bridges 22.
  • the housings 25 are made on this peripheral portion of the lower face 210 of the plate 21.
  • the distal portions 151 of the fasteners 15 are preferably welded, for example with a laser welding method, to the housings 25 in which they are engaged.
  • distal portions 151 can be glued to the housings 25 or are assembled by tight fit to said housings 25.
  • the distal portions 151 can be fixed to the housings 25 by elastic fitting.
  • the distal portions 151 may comprise a through hole allowing the engagement of a screw intended to cooperate with a tapped hole which the housings 25 of the plate 21 comprise. embodiment in which it does not include housings 25, the screws cooperate with tapped holes made on the lower face 210 of the plate 21 or at the bottom of counterbores intended to embed the screw heads.
  • the distal portions 151 may include a through hole allowing the engagement of a nail intended to be driven into the plate 21.
  • the circle 10 comprises a chamfer 16 at the junction between the first axial end 11 and each of its longitudinal ends.
  • the chamfers 16 are each arranged opposite to a fixing member 15.
  • the circle 10 has the tubular shape of a cylinder of revolution, in other embodiments not shown in the figures, it may have other tubular shapes.
  • it may include a cross section of elliptical shape, polygonal shape or any other appropriate shape corresponding to the shape of the circumference of the cross section of a set of bridges 22 of a watch movement 20 to be protected.
  • the fixing members 15 may conform to those described previously, with the difference that they extend towards the inside of the circle 10 and not towards the 'outside. Furthermore, in this embodiment, the fixing members 15 can cooperate with housings 25 of corresponding shape formed in the bridges 22 or in the plate 21.
  • the fixing members 15 may be in the form of a relief, for example constituted by an annular boss oriented towards the inside of the circle 10 and extending between the longitudinal ends of the circle 10. The relief is then provided to cooperate with a groove made on the periphery of the set of bridges 22.
  • the fixing members 15 can take the form of a radial collar extending from the second axial end 12 of the body of the hoop 10, towards the outside of the hoop 10, said fixing members 15 as well as the body of the hoop 10 being intended to be fixed by press fit between the watch movement 20 and the build.
  • the flange is fixed by gluing to plate 21.
  • the plate 21 may comprise tappings on its lower face 210 provided to receive fixing screws intended to fix the circle 10 against the watch movement 20.
  • fixing flanges are also possible.
  • the fastening members 15 of the hoop 10 can be formed by tabs extending axially from the second axial end 12 of the hoop body 10, said tabs being intended to be engaged in through holes made in the plate 21 so that their free end opens beyond said holes in order to be folded against the upper face of the plate 21.
  • the body of the circle 10 comprises through holes respectively provided to receive studs or pins extending radially from the set of bridges 22 of the watch movement 20.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Springs (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
EP21199919.8A 2021-09-29 2021-09-29 Schutzring für uhrwerk und uhrwerk, das diesen schutzring umfasst Pending EP4160321A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP21199919.8A EP4160321A1 (de) 2021-09-29 2021-09-29 Schutzring für uhrwerk und uhrwerk, das diesen schutzring umfasst
US17/863,640 US20230100861A1 (en) 2021-09-29 2022-07-13 Protective ring for a horology movement and horology movement including said protective ring
KR1020220092651A KR102658952B1 (ko) 2021-09-29 2022-07-26 측시 무브먼트용 보호 링 및 상기 보호 링을 포함하는 측시 무브먼트
JP2022126928A JP7441902B2 (ja) 2021-09-29 2022-08-09 計時器用ムーブメントのための保護リング、及び保護リングを備える計時器用ムーブメント
CN202222594013.9U CN218957039U (zh) 2021-09-29 2022-09-29 钟表机芯
CN202211199354.4A CN115877692A (zh) 2021-09-29 2022-09-29 用于钟表机芯的保护环和包括所述保护环的钟表机芯

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21199919.8A EP4160321A1 (de) 2021-09-29 2021-09-29 Schutzring für uhrwerk und uhrwerk, das diesen schutzring umfasst

Publications (1)

Publication Number Publication Date
EP4160321A1 true EP4160321A1 (de) 2023-04-05

Family

ID=78087016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21199919.8A Pending EP4160321A1 (de) 2021-09-29 2021-09-29 Schutzring für uhrwerk und uhrwerk, das diesen schutzring umfasst

Country Status (5)

Country Link
US (1) US20230100861A1 (de)
EP (1) EP4160321A1 (de)
JP (1) JP7441902B2 (de)
KR (1) KR102658952B1 (de)
CN (2) CN115877692A (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH98832A (fr) * 1921-11-18 1923-04-16 Henry Georges Dispositif d'emboîtage de mouvement de montre.
CH336757A (fr) * 1957-02-14 1959-02-28 Piquerez Sa Ervin Montre à remontoir automatique
JPS4711270U (de) * 1971-03-08 1972-10-11
EP0958529A1 (de) * 1995-10-12 1999-11-24 Marco Scaccabarozzi Uhr mit einem in einer Schirmvorrichtung eingeschlossenen elektronishenMechanismus
WO2007012939A1 (de) * 2005-07-29 2007-02-01 Richemont International S.A. Gehäuse zur abschirmung magnetischer felder
EP2458456A1 (de) * 2010-11-25 2012-05-30 Rolex Sa Armbanduhr mit starrem Werkgestell, und Einsetzverfahren in das Werkgestell

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH98832A (fr) * 1921-11-18 1923-04-16 Henry Georges Dispositif d'emboîtage de mouvement de montre.
CH336757A (fr) * 1957-02-14 1959-02-28 Piquerez Sa Ervin Montre à remontoir automatique
JPS4711270U (de) * 1971-03-08 1972-10-11
EP0958529A1 (de) * 1995-10-12 1999-11-24 Marco Scaccabarozzi Uhr mit einem in einer Schirmvorrichtung eingeschlossenen elektronishenMechanismus
WO2007012939A1 (de) * 2005-07-29 2007-02-01 Richemont International S.A. Gehäuse zur abschirmung magnetischer felder
EP2458456A1 (de) * 2010-11-25 2012-05-30 Rolex Sa Armbanduhr mit starrem Werkgestell, und Einsetzverfahren in das Werkgestell

Also Published As

Publication number Publication date
JP2023050098A (ja) 2023-04-10
KR20230046200A (ko) 2023-04-05
CN115877692A (zh) 2023-03-31
KR102658952B1 (ko) 2024-04-18
US20230100861A1 (en) 2023-03-30
JP7441902B2 (ja) 2024-03-01
CN218957039U (zh) 2023-05-02

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