EP2080066A2 - Uhr - Google Patents

Uhr

Info

Publication number
EP2080066A2
EP2080066A2 EP07820995A EP07820995A EP2080066A2 EP 2080066 A2 EP2080066 A2 EP 2080066A2 EP 07820995 A EP07820995 A EP 07820995A EP 07820995 A EP07820995 A EP 07820995A EP 2080066 A2 EP2080066 A2 EP 2080066A2
Authority
EP
European Patent Office
Prior art keywords
drum
shaft
plate
barrel
ball bearing
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
EP07820995A
Other languages
English (en)
French (fr)
Other versions
EP2080066B1 (de
Inventor
Patrick Kury
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.)
Eterna AG Uhrenfabrik
Original Assignee
Eterna AG Uhrenfabrik
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 Eterna AG Uhrenfabrik filed Critical Eterna AG Uhrenfabrik
Publication of EP2080066A2 publication Critical patent/EP2080066A2/de
Application granted granted Critical
Publication of EP2080066B1 publication Critical patent/EP2080066B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
    • G04B31/012—Metallic bearings
    • G04B31/0123—Metallic bearings with metallic ball bearings and metallic roller bearings

Definitions

  • the present invention relates to the field of mechanical watchmaking and relates, more particularly, to a timepiece whose barrel is arranged advantageously.
  • the barrel is the motor unit used in mechanical watches. It acts as an energy accumulator by being armed by the user or by an oscillating mass and by gradually restoring to the wheel of the watch the energy that it has stored.
  • a conventional type barrel comprises:
  • a barrel drum which is a kind of cylindrical box having a bottom and side walls, the drum being provided with an external toothing to drive the gear
  • the drum and the lid are generally pivoted to the barrel shaft to stabilize the latter.
  • a ratchet is mounted integral with the barrel shaft, generally square. It is driven by a winding device, manual or automatic, to rotate the shaft and arm the barrel spring.
  • Document CH 610178 proposes, in order to improve the pivoting quality of the barrel, to mount cantilevered by means of a ball bearing.
  • the barrel shaft is driven into the inner ring of this bearing while the outer ring is fixed in a housing in the plate.
  • the drum is pivoted from the outside by means of rollers with which it cooperates.
  • the present invention aims not only to overcome this disadvantage, but also to improve the pivoting of the barrel.
  • the barrel drum is pivoted by a first ball bearing, one ring is integral with the plate and another ring is secured to the bottom of the drum.
  • the barrel shaft is pivoted in the plate by means of a second ball bearing.
  • the barrel shaft and the drum are pivotally mounted relative to the plate by means of a ball bearing comprising an intermediate ring fixed to the plate, an inner ring secured to the shaft and an outer ring secured to the bottom of the drum.
  • FIG. 1 is a sectional view of a preferred embodiment
  • FIGS. 2a and 2b are respectively sectional and top views of a bearing used in the embodiment of FIG. 1, and
  • a plate 10 carrying the essential elements of a watch movement of which only the energy accumulator is shown.
  • This is conventionally constituted of a cylinder 12 mounted on the plate 10 and comprises a shaft 14 provided with pivoting means on the plate 10.
  • the body of the shaft 14 defines a bung 16 provided with a hook 18.
  • a drum 20 is traversed at its center by the shaft 14 and, according to an important aspect of the present invention which will be detailed below, is pivoted on the plate 10.
  • the drum is provided with a external toothing 22 for driving a clockwork train. It comprises a bottom located on the side of the plate and side walls forming its diameter which define a housing 24.
  • a clearance 26 is operated inside the side walls.
  • the drum 20 is free to pivot relative to the shaft 14 and may constitute a bearing for the latter.
  • a leaf spring is disposed in the housing 24, fixed by a first end to the hook 18 and a second end to the drum at the clearance 26.
  • a lid 28 closes the drum 20. It is also traversed by the shaft 14 at its center and may constitute a bearing for the latter.
  • a ratchet wheel 30 is mounted integral with the shaft 14, for example by means of a screw 32. This wheel is intended to be driven by winding means known to those skilled in the art to arm the leaf spring.
  • this bearing comprises:
  • the pivoting means of the shaft 14 on the plate 10 also consist of a ball bearing 40, comprising a first inner ring 42 secured to the shaft, for example by and a second ring 44 (visible in Figures 5 and 6) integral with the plate 10.
  • the second ring of the bearing by which the shaft pivots is constituted by the intermediate ring 36.
  • the barrel shaft 14 and the drum 20 are pivotally mounted relative to the plate by means of a ball bearing comprising an intermediate ring 36 fixed to the plate, an inner ring 42 secured to the plate. shaft and an outer ring 38 secured to the bottom of the drum.
  • the bottom of the drum 20 may have a slight extra thickness to strengthen it at the passage of the screws. In addition, this extra thickness makes it possible to define a slight clearance between the bottom of the barrel 12 and the other elements of the bearing, avoiding any superfluous friction.
  • FIG. 2 An example of a bearing used is particularly visible in Figure 2. It defines a general plan. In the following passage, the lower side of the bearing is arranged platinum side 10 in Figure 1 and its upper side is oriented on the side of the ratchet wheel 30.
  • the bearing therefore comprises an inner ring 42 provided with a hole. central circular, in which the shaft 14 is intended to take place.
  • the inner ring 42 has a foot 42a extending at the lower level of its outer wall, in the general plane of the bearing. The end of this foot 42a is shaped so as to have a rolling surface for the balls.
  • the intermediate ring 36 comprises a first groove 36a parallel to the general plane of the bearing, disposed on the inner wall, substantially in the middle of its thickness. It also has a foot 36b extending from the upper side of its outer wall, in the general plane of the bearing.
  • the groove 36a is shaped to form a raceway, while the foot 36b has a rolling surface for the balls.
  • the grooves are typically V-shaped.
  • the ring 36 is traversed by holes 46 to allow its attachment to the plate 10.
  • the outer ring 38 comprises a second groove 38a parallel to the general plane of the bearing, disposed on the inner wall, substantially in the middle of its thickness.
  • the groove 38a is shaped so as to form a raceway for the balls, it is typically V-shaped.
  • the outer wall is cylindrical and matches a recess of suitable shape, formed in the plate 10.
  • the ring 38 is traversed by holes 46 to allow its attachment to the drum 20.
  • Rings 48 are arranged, respectively, on the inner ring 42 and the intermediate ring 36, facing their foot, so as to form with them a raceway for the balls.
  • the rings 48 are driven and welded to the rings after the placement of the balls, further ensuring the maintenance of all.
  • the feet and the grooves can be reversed. That is to say that the inner ring may have a groove on its outer wall, the inner wall of the intermediate ring then having a foot cooperating with a ring, etc.
  • the bearings used are micro-bearings whose accuracy must be maximum to ensure a perfect positioning of the pivot axes and a guide optimal moving elements.
  • These microleads are, for example, produced by Micro Precision System AG.
  • Pivot the barrel drum 20 in this way makes it possible to position it in an excellent manner and to obtain pivoting conditions that generate little friction.
  • peripheral guiding means which frees the entire place around the barrel for other elements of the movement.
  • the barrel shaft 14 is not mounted cantilever to improve the accuracy of its positioning. Its end located on the opposite side to the plate is pivoted by a third ball bearing 49 arranged by means of a shaft bridge 50, screwed onto the plate.
  • this bearing 49 comprises a first outer ring 52 driven into the bridge 50 and a second inner ring 54 integral with the shaft 14.
  • the ratchet wheel 30 overcomes the bearing 49 and the bridge 50 and is screwed into the 14. It could also be arranged at the other end of the shaft 14. According to a first variant illustrated in FIG.
  • the pivoting means of the shaft on the plate and those of the drum on the plate are independent.
  • the shaft is pivoted by a ball bearing 40 (FIG. 4 and 5) or by conventional pivoting (FIG. 6), by means of a stone 54.
  • the bearing 34 by which the drum 20 is pivoted on the plate 10 can then be attached thereto by its inner ring 36 ( Figure 4) or by its outer ring 38 ( Figure 5).
  • the bottom of the drum is respectively fixed to the outer ring 38 ( Figure 4) or the inner ring 36 ( Figure 5) of the bearing.
  • the drum 20 and the shaft 14 are pivoted by means of a single bearing having three rings 36, 42 and 38, as in the preferred embodiment, but the bottom of the drum is secured to the intermediate ring 36, while the outer ring 38 is fixed to the plate 10.
  • this outer ring 38 is driven into a recess of the plate provided for this purpose.
  • the power reserve of such a cylinder is improved, thanks to its performance, higher than those of the state of the art. It is thus possible to use a weaker spring, therefore of lesser thickness, to give the desired amplitude to the balance.
  • the spring can be wound on a larger number of turns in the same volume and thus store a greater energy.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Rolling Contact Bearings (AREA)
  • Electric Clocks (AREA)
  • Transmission Devices (AREA)
EP07820995A 2006-10-20 2007-10-05 Uhr Not-in-force EP2080066B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01668/06A CH702035B1 (fr) 2006-10-20 2006-10-20 Pièce d'horlogerie.
PCT/EP2007/060622 WO2008046750A2 (fr) 2006-10-20 2007-10-05 Piece d'horlogerie

Publications (2)

Publication Number Publication Date
EP2080066A2 true EP2080066A2 (de) 2009-07-22
EP2080066B1 EP2080066B1 (de) 2011-04-20

Family

ID=39314387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07820995A Not-in-force EP2080066B1 (de) 2006-10-20 2007-10-05 Uhr

Country Status (8)

Country Link
US (1) US7942573B2 (de)
EP (1) EP2080066B1 (de)
JP (1) JP5118142B2 (de)
CN (1) CN101535904B (de)
AT (1) ATE506637T1 (de)
CH (1) CH702035B1 (de)
DE (1) DE602007014089D1 (de)
WO (1) WO2008046750A2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702994B1 (fr) * 2010-04-26 2015-07-31 Eterna Sa Fabrique D Horlogerie Pièce d'horlogerie comprenant un barillet monté sur un pont de barillet.
EP2466397B1 (de) * 2010-12-20 2013-08-21 Blancpain S.A. Drehteil einer Uhr mit peripherem Antrieb
EP2570863B1 (de) * 2011-09-15 2017-11-08 Blancpain S.A. Uhren-Federgehäuse mit reduziertem Durchmesser des Bundes
EP2570862B1 (de) * 2011-09-15 2014-03-05 ETA SA Manufacture Horlogère Suisse Uhren-Federgehäusebaugruppe mit reduziertem Bunddurchmesser
EP2570865B1 (de) * 2011-09-15 2014-03-05 Montres Breguet SA Uhren-Federgehäusebaugruppe mit reduziertem Federkerndurchmesser
AT512862B1 (de) * 2012-03-19 2014-02-15 Montre Exacte E U Antriebsvorrichtung für ein mechanisches Uhrwerk
WO2013150086A1 (fr) * 2012-04-04 2013-10-10 Rolex Sa Arbre de barillet pour mouvement horloger, ressort de barillet et barillet comprenant un tel ressort et/ou un tel arbre
EP2746865B1 (de) * 2012-12-18 2016-03-02 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr
EP2746867B1 (de) * 2012-12-18 2015-12-16 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr
EP2869134B1 (de) * 2013-11-04 2020-02-26 Chronometrie Ferdinand Berthoud SA Federhaussystem für Uhr
EP2963504A1 (de) * 2014-06-30 2016-01-06 Rolex Sa Federgehäuse für Uhr
EP3460275B1 (de) * 2017-09-25 2021-12-01 Rolex Sa Lager für uhrwerk

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB955499A (en) 1962-02-23 1964-04-15 A & M Fell Ltd Improvements in or relating to clocks
CH449327A (fr) 1965-12-15 1967-12-31 Jacot Guillarmod Maurice Barillet-moteur à grande accumulation d'énergie
CH610178B (fr) * 1976-02-18 Bouchet Lassale Sa Mouvement de montre.
IT1074807B (it) * 1976-02-18 1985-04-20 Bouchet Lassale Sa Dispositivo di imperniamento per bariletto d'orologio
CH682871B5 (fr) * 1992-06-06 1994-06-15 Piguet Frederic Sa Mouvement de montre extra-plat.
JPH11174162A (ja) 1997-12-11 1999-07-02 Seiko Instruments Inc 香箱車及び機械式時計
CN1249449A (zh) * 1998-09-30 2000-04-05 东方时计株式会社 发条动力的指示机构及钟表
US7012855B1 (en) * 1999-12-23 2006-03-14 Miguel Guillermo Ochoa Loaiza World globe pocket clock and world globe desk clock
US6603709B2 (en) * 1999-12-23 2003-08-05 Miguel Guillermo Ochoa Loaiza World globe pocket clock and world globe desk clock
US6478469B1 (en) * 2000-11-03 2002-11-12 Accessible Technologies, Inc. Velocity variance reducing multiple bearing arrangement for impeller shaft of centrifugal supercharger
US6651633B1 (en) * 2000-11-03 2003-11-25 Accessible Technologies, Inc. Centrifugal compressor having compound bearing assembly
DE60137113D1 (de) * 2001-03-21 2009-02-05 Chronoswiss Uhren Gmbh Uhrwerk
DE602004016282D1 (de) * 2004-04-01 2008-10-16 Richemont Int Sa Uhrwerk mit mehreren Federhäusern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008046750A2 *

Also Published As

Publication number Publication date
US7942573B2 (en) 2011-05-17
JP5118142B2 (ja) 2013-01-16
DE602007014089D1 (de) 2011-06-01
US20100322039A1 (en) 2010-12-23
WO2008046750A8 (fr) 2009-05-07
CH702035B1 (fr) 2011-04-29
HK1133092A1 (en) 2010-03-12
WO2008046750A2 (fr) 2008-04-24
EP2080066B1 (de) 2011-04-20
CN101535904A (zh) 2009-09-16
CN101535904B (zh) 2012-01-18
WO2008046750A3 (fr) 2008-08-21
JP2010507081A (ja) 2010-03-04
ATE506637T1 (de) 2011-05-15

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