EP2963504A1 - Federgehäuse für Uhr - Google Patents

Federgehäuse für Uhr Download PDF

Info

Publication number
EP2963504A1
EP2963504A1 EP14174955.6A EP14174955A EP2963504A1 EP 2963504 A1 EP2963504 A1 EP 2963504A1 EP 14174955 A EP14174955 A EP 14174955A EP 2963504 A1 EP2963504 A1 EP 2963504A1
Authority
EP
European Patent Office
Prior art keywords
barrel
drum
cover
shaft
thickness
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
EP14174955.6A
Other languages
English (en)
French (fr)
Inventor
Florent Millet
Julien Saglini
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
Priority to EP14174955.6A priority Critical patent/EP2963504A1/de
Priority to EP21209059.1A priority patent/EP3974913A1/de
Priority to JP2015129535A priority patent/JP6537371B2/ja
Priority to US14/753,277 priority patent/US9285772B2/en
Priority to CN201510458113.0A priority patent/CN105204314B/zh
Publication of EP2963504A1 publication Critical patent/EP2963504A1/de
Pending legal-status Critical Current

Links

Images

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
    • G04B1/16—Barrels; Arbors; Barrel axles
    • 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

Definitions

  • the invention relates to a cylinder for a watch movement, a watch movement and a timepiece incorporating such a cylinder, in particular a wristwatch. It also relates to a method of manufacturing a cylinder for a watch movement.
  • the figure 1 illustrates a barrel according to the traditional architecture of the state of the art. It comprises a barrel shaft 1 around which is arranged in a rotational manner an assembly comprising a drum 2 and a lid 3 defining a housing 4 in which is disposed the barrel spring 15, partially shown.
  • This spring transmits the energy necessary for the operation of a watch movement and thus determines its power reserve.
  • the shaft At its two ends, the shaft comprises end portions 5 and bearing surfaces 6, which cooperate with the components of the two blanks 10 of the watch movement, such as a bridge and a plate, between which is mounted the shaft of barrel.
  • These end portions 5 and these bearings 6 define the radial and axial guidance of the cylinder in its movement, and minimize its radial and axial clearance.
  • the drum 2 and the lid 3 form flat disks arranged around the barrel shaft 1, extending perpendicularly to this shaft. They comprise in their central part annular protrusions 7 which form a first contact surface 8 on bearings of the barrel shaft 1, perpendicular to the axis A of the barrel shaft. These annular projections form a second contact surface 9 with the barrel shaft, parallel to the axis of this shaft, arranged on the substantially cylindrical circumference of the barrel shaft 1.
  • the document EP2570861 discloses a barrel according to an alternative architecture, wherein the barrel prowl in a direction parallel to the axis of the barrel shaft is obtained at least partially by a direct cooperation of the drum and the lid with a bridge and a plate of the watch movement.
  • Such an approach makes it possible to increase the height of the mainspring with respect to the traditional architecture described previously.
  • this approach causes significant axial play of the barrel and increases the risk of wear. It is not acceptable.
  • the invention aims to maximize the power reserve of a watch movement while having a powerful and reliable barrel.
  • the invention is based on a barrel for a watch movement, comprising a barrel shaft around which is arranged in a rotational manner an assembly comprising a drum and a lid defining a housing for receiving a barrel spring, the drum and cover each having a wall extending from a peripheral end of the barrel to a central end of the barrel at the barrel shaft, characterized in that at least a portion of at least one of said walls has a variable thickness that increases continuously away from the peripheral end of the barrel.
  • the figure 2 illustrates a cylinder according to one embodiment of the invention. It comprises a barrel shaft 20 around which is rotatably arranged a rotating assembly comprising a drum 30 and a lid 40 defining a housing 50 in which is disposed the barrel spring 51.
  • the barrel shaft 20 comprises an axis A of revolution and is intended to be mounted between two blanks of a watch movement, not shown. Each blank is for example a bridge or a plate.
  • this barrel shaft guides the rotational movement of the rotating assembly and limits the axial and radial play of the barrel relative to the watch movement, by its connections at its level. two ends that are provided to cooperate with the blanks.
  • Axis A is also the axis of rotation of the barrel.
  • the drum 30 and the cover 40 comprise a first end that we will call peripheral end 34, 44 and a second end at the barrel shaft 20 which forms their axis of rotation, which we will call the central end. At or substantially at their peripheral end, they can form a bend to join and close the housing 50. Between these two ends, the walls 31, 41 of the drum 30 and the cover 40 preferably have similar shapes, symmetrical by relative to a median plane perpendicular to the axis of the barrel shaft.
  • the inner surface 32 is substantially perpendicular to the axis of the barrel shaft, forms a flat disk in a plane substantially perpendicular to the axis of the barrel shaft, which delimits a housing 50 of substantially rectangular section , and which forms a portion of a cylinder around the barrel shaft.
  • the outer surface 33 is slightly inclined relative to the direction perpendicular to the axis of the barrel shaft, so that the thickness of the wall 31 of the drum, measured between the inner surface 32 and the outer surface 33, decreases. continuously in the direction of the center towards the periphery.
  • the wall 31 of the drum 30 thickens to form a projection 35 in the form of a cylinder portion.
  • the central surface 36 of this projection substantially parallel to the axis of the barrel shaft 20, comes into contact against this shaft, around the entire periphery of the shaft, and thus guides the rotation around the shaft while minimizing the radial frolic.
  • the inner surface 37 of the projection 35 substantially perpendicular to the axis of the barrel shaft 20, bears on a corresponding surface formed by a central portion of larger diameter 21 of the barrel shaft. Thus, this surface minimizes the axial frustum of the rotating assembly.
  • this projection 35 arranged in the central end of the drum 30, allows axial and radial guiding at least clearance of the rotating assembly.
  • the projection has a height hs, measured between its inner surface 37 and the outer surface 38 of the drum 30 at the projection 35.
  • This height hs is at least twice as large as the widest thickness of the drum wall, out of the projection 35, or at least three times greater than its minimum thickness.
  • this particular solution therefore comprises a drum 30 and a cover 40 which do not participate in the axial retention of the barrel vis-à-vis the blanks of the watch movement between which the barrel is mounted.
  • the drum and the cover have no contact or guiding surface in contact with the blanks, in particular a plate or a bridge.
  • the barrel shaft alone fulfills this function.
  • the wall 31 has a greatly reduced thickness, which is minimized to provide the largest possible housing 50 arranged in the restricted non-extensible volume imposed by the watch movement, in particular its two blanks between which the barrel is mounted , to naturally use the largest barrel spring possible, inducing the largest possible power reserve.
  • the wall 31 comprises a minimum thickness e2 at its peripheral end 34.
  • the outer surface 33 of this wall is inclined and moves away continuously from the inner surface 32, to the level of its boundary with the projection 35 of the drum 30, to continuously increase the thickness of the wall 31 to a maximum thickness e1 at its central end at the border with the projection 35.
  • the profile of the outer surface 33 is linear according to a view axial section of the barrel such as that illustrated on the figure 2 .
  • This wall portion of the drum 30, which has a thickness that varies continuously, allows to use a wall less thick than the usual wall of a cylinder according to the state of the art, while being rigid enough to ensure a good assembling the lid and the drum, and allowing its precise and repeatable manufacture by a screw-type material removal process.
  • the drum and / or the lid are advantageously in a material suitable for manufacturing by removal of material, such as a copper-based alloy such as brass.
  • the inclination of the outer surface 33 of the wall 31 of the drum 30 is of the order of 0.5 degrees. More generally, this inclination may be between 0.5 and 5 degrees inclusive, or even between 0.5 and 2 degrees inclusive, more preferably between 0.5 and 1.5 degrees inclusive.
  • section of the wall 31 is thus a truncated half-cone section whose axis of revolution is perpendicular to the axis of rotation of the barrel and passes through the inner surface of the wall 31 of the drum.
  • This geometry of the wall of the drum is particularly adapted to a watch, and any watch movement of diameter less than or equal to 40 mm, or even less than or equal to 35 mm, or even less than or equal to 30 mm, or inscribed in such a circle. It is therefore adapted for example to a drum of diameter less than or equal to 20 mm.
  • an embodiment may be based on a drum whose diameter is of the order of 12 mm, the minimum thickness e2 of the wall is 0.1 mm and the maximum thickness e1 out of the projection is 0.15 mm.
  • the projection may have a height hs of 0.45 mm.
  • this minimum thickness e2 could be less than or equal to 0.1 mm, for example, be 0.09 or 0.08 mm.
  • Such a geometry makes it possible to define a housing 50 with a height Hi greater than or equal to 1.6 mm. More generally, the maximum thickness e1 of the wall portion of variable thickness is less than or equal to 0.18 mm, or even 0.15 mm, and the minimum thickness e2 of the wall portion of variable thickness is less than or equal to 0.13 mm or even 0.1 mm.
  • the wall 31 of the drum may have other geometries without departing from the concept of the invention.
  • the portion with an inclined surface, of varying thickness extends from the peripheral end of the drum and may not extend to the central end (to the immediate boundary with the protrusion ). It can indeed extend over only a portion of the radius r of the drum. It can then be supplemented by complementary walls of constant thickness. Advantageously, it extends over at least half or even two-thirds of the radius r of the drum.
  • this wall portion of variable thickness may be obtained by a shape other than a planar surface inclined linearly, this surface may for example be curved In all cases, this surface portion is continuous. It advantageously has a minimum thickness e2 towards the peripheral end and a maximum thickness e1 toward the central end.
  • the drum wall advantageously has a portion of variable thickness, decreasing from a maximum thickness e1 to a minimum thickness e2, with a ratio e1 / e2 greater than or equal to 1.4.
  • the wall advantageously has a projection of height hs at its central end, with a ratio hs / e2 between this height and the aforementioned minimum thickness greater than or equal to 3.
  • the cover 40 advantageously has a shape identical and symmetrical to that of the drum 30.
  • the cover 40 advantageously has a shape identical and symmetrical to that of the drum 30.
  • all that has been detailed above about the drum can be applied to the lid. Only the bends of the two components, at their peripheral ends, may differ: they advantageously form respective walls 39, 49, which are substantially parallel. to the axis of the shaft of the barrel, which come to cooperate by any means, to close the housing 50.
  • the cover 40 also has a projection 45 at its central end, with two surfaces 46, 47 in contact with corresponding surfaces of the barrel shaft 20 to ensure its axial and radial retention, with a minimum of frolics, as for the drum.
  • its wall 41 outside the projection, also has an inclined outer surface 43, whose profile is preferably linear in axial section of the barrel, which continuously reduces its thickness of the maximum thickness e1 at the from the boundary with the projection 45 to a minimum thickness e2 at the peripheral end 44 of this upper surface.
  • the inner surface 44 of the wall 41 remains flat and perpendicular to the axis of the barrel shaft.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Closures For Containers (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP14174955.6A 2014-06-30 2014-06-30 Federgehäuse für Uhr Pending EP2963504A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14174955.6A EP2963504A1 (de) 2014-06-30 2014-06-30 Federgehäuse für Uhr
EP21209059.1A EP3974913A1 (de) 2014-06-30 2014-06-30 Federgehäuse für uhr
JP2015129535A JP6537371B2 (ja) 2014-06-30 2015-06-29 時計用香箱
US14/753,277 US9285772B2 (en) 2014-06-30 2015-06-29 Barrel for timepiece
CN201510458113.0A CN105204314B (zh) 2014-06-30 2015-06-29 计时器发条盒

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14174955.6A EP2963504A1 (de) 2014-06-30 2014-06-30 Federgehäuse für Uhr

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP21209059.1A Division EP3974913A1 (de) 2014-06-30 2014-06-30 Federgehäuse für uhr

Publications (1)

Publication Number Publication Date
EP2963504A1 true EP2963504A1 (de) 2016-01-06

Family

ID=51014209

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14174955.6A Pending EP2963504A1 (de) 2014-06-30 2014-06-30 Federgehäuse für Uhr
EP21209059.1A Pending EP3974913A1 (de) 2014-06-30 2014-06-30 Federgehäuse für uhr

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21209059.1A Pending EP3974913A1 (de) 2014-06-30 2014-06-30 Federgehäuse für uhr

Country Status (4)

Country Link
US (1) US9285772B2 (de)
EP (2) EP2963504A1 (de)
JP (1) JP6537371B2 (de)
CN (1) CN105204314B (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1044852A (en) * 1965-05-10 1966-10-05 Glashutter Uhrenbetr E Veb Spring barrel arrangements for watches
EP2060957A1 (de) * 2007-11-16 2009-05-20 ETA SA Manufacture Horlogère Suisse Motorelement mit federn für uhrwerk
EP2570862A1 (de) * 2011-09-15 2013-03-20 ETA SA Manufacture Horlogère Suisse Uhren-Federgehäusebaugruppe mit reduziertem Bunddurchmesser
EP2570861A1 (de) 2011-09-15 2013-03-20 ETA SA Manufacture Horlogère Suisse Uhren-Federgehäuse mit reduziertem Durchmesser des Bundes
EP2746868A1 (de) * 2012-12-18 2014-06-25 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1371491A (fr) * 1963-09-21 1964-09-04 Perfectionnements aux mouvements d'horlogerie en vue d'une lubrification intégrale sans démontage
CH566044A (de) * 1972-12-18 1975-08-29
US6863435B2 (en) * 1997-08-11 2005-03-08 Seiko Epson Corporation Spring, mainspring, hairspring, and driving mechanism and timepiece based thereon
CH702035B1 (fr) * 2006-10-20 2011-04-29 Eterna Sa Fabrique D Horlogerie Pièce d'horlogerie.
US9298162B2 (en) * 2010-10-01 2016-03-29 Rolex Sa Timepiece barrel with thin disks
CH706654A2 (fr) * 2012-06-28 2013-12-31 Nivarox Sa Ressort-moteur pour une pièce d'horlogerie.
EP2746866B1 (de) * 2012-12-18 2016-05-18 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1044852A (en) * 1965-05-10 1966-10-05 Glashutter Uhrenbetr E Veb Spring barrel arrangements for watches
EP2060957A1 (de) * 2007-11-16 2009-05-20 ETA SA Manufacture Horlogère Suisse Motorelement mit federn für uhrwerk
EP2570862A1 (de) * 2011-09-15 2013-03-20 ETA SA Manufacture Horlogère Suisse Uhren-Federgehäusebaugruppe mit reduziertem Bunddurchmesser
EP2570861A1 (de) 2011-09-15 2013-03-20 ETA SA Manufacture Horlogère Suisse Uhren-Federgehäuse mit reduziertem Durchmesser des Bundes
EP2746868A1 (de) * 2012-12-18 2014-06-25 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr

Also Published As

Publication number Publication date
CN105204314B (zh) 2020-02-07
CN105204314A (zh) 2015-12-30
JP6537371B2 (ja) 2019-07-03
JP2016014664A (ja) 2016-01-28
US9285772B2 (en) 2016-03-15
EP3974913A1 (de) 2022-03-30
US20150378308A1 (en) 2015-12-31

Similar Documents

Publication Publication Date Title
EP1738229B1 (de) Krone für eine uhr mit einer entriegelungseinrichtung
EP2458454B1 (de) Vorrichtung zum Positionieren einer Brückenschaltung auf einer Platine
EP2674817B1 (de) Verfahren zur Herstellung eines Uhrfederhauswelle
CH704640B1 (fr) Organe de pivotement.
WO2015193123A1 (fr) Mobile d'horlogerie
EP2823364B1 (de) Federhaus
EP2520984B1 (de) Federhaus umfassend zusätzlichen elastischen Mitteln zur Energieakkumulation
EP2705271B1 (de) Federhaus umfassend krümmungen zur energieakkumulation
WO2010072629A1 (fr) Piece d'horlogerie comprenant un organe de pivotement
WO2014173611A1 (fr) Dispositif et méthode de fixation d'un mouvement dans un boîtier
CH711020B1 (fr) Roulement et procédé d'assemblage d'un tel roulement.
EP2107433A1 (de) Montageverfahren eines Bauteils auf eine Welle
EP2988177A1 (de) Zeiger einer Armbanduhr
EP2963504A1 (de) Federgehäuse für Uhr
EP3023844A1 (de) Flexible Spiralrolle
EP2113372B1 (de) Verbessertes mechanisches Bauteil aus Zweischichtwerkstoff
CH704129A2 (fr) Dispositif de positionnement d'un pont sur une platine.
EP3770697A1 (de) Verfahren zur herstellung eines abgeschrägten steins, insbesondere für uhrwerk
CH714379A2 (fr) Ensemble d'éléments de bâti horloger.
EP3729204B1 (de) Watchpiece-teil mit einer vorrichtung zum befestigen eines zifferblatt
EP0517572A1 (de) Verfahren zur Herstellung einer Riemenscheibe, Vorrichtung zu ihrer Herstellung und so hergestellte Riemenscheibe
EP3499318A1 (de) Schwingsystem für armbanduhr
EP3889689A1 (de) Antriebsorgan für uhr
WO2023170159A1 (fr) Assemblage horloger
CH709330A2 (fr) Procédé de fabrication d'un roulement à billes du type à quatre points de contact et roulement fabriqué selon ce procédé.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20160627

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20190313

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

APBK Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNE

APBN Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2E

APBR Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3E

APAF Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNE

APAF Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNE

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530