EP2564276A1 - Uhr - Google Patents

Uhr

Info

Publication number
EP2564276A1
EP2564276A1 EP11716263A EP11716263A EP2564276A1 EP 2564276 A1 EP2564276 A1 EP 2564276A1 EP 11716263 A EP11716263 A EP 11716263A EP 11716263 A EP11716263 A EP 11716263A EP 2564276 A1 EP2564276 A1 EP 2564276A1
Authority
EP
European Patent Office
Prior art keywords
barrel
drum
shaft
ring
plate
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
EP11716263A
Other languages
English (en)
French (fr)
Other versions
EP2564276B1 (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 EP2564276A1 publication Critical patent/EP2564276A1/de
Application granted granted Critical
Publication of EP2564276B1 publication Critical patent/EP2564276B1/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 drum is pivoted by a first ball bearing comprising an inner ring secured to the shaft, an intermediate ring, and an outer ring, one of the intermediate and outer rings. being fixed to the barrel bridge, the other being secured to said bottom.
  • the invention also relates to a cylinder whose shaft is mounted flying, that is to say that it is pivoted only by one of its ends, by means of a bearing comprising three rings, coplanar, one ring of the intermediate and outer rings is attached to a frame member (bridge or plate), the other ring of the intermediate and outer rings is fixed to the bottom of the drum, and the ring inside is attached to the tree.
  • FIG. 1 There is shown in Figure 1, a plate 10 bearing the essential elements of a watch movement, of which only the energy accumulator is shown. This is conventionally constituted by a barrel 12 having a shaft 14 provided with pivoting means on the plate 10. The body of the shaft 14 defines a bung 16 provided with a not shown hook.
  • a drum 20 is traversed at its center by the shaft 14.
  • the drum is provided with an external toothing 22 to drive a wheel of a watch. It comprises a bottom 23 and side walls forming its diameter which define a housing. A clearance is made inside the side walls.
  • the drum 20 is free to pivot relative to the shaft 14.
  • a leaf spring 24 is disposed in the housing, fixed by a first end to the hook and a second end to the drum at the clearance.
  • a lid 28 closes the drum 20. It is also traversed by the shaft 14 in its center, the shaft and the cover being free one with reference to the other.
  • 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.
  • a barrel bridge 33 is rigidly mounted on the plate, to allow the pivoting of the shaft 14.
  • the ratchet wheel 30 overcomes the bridge 33 and is screwed into the shaft 14. It could also be arranged in the other end of the shaft 14.
  • the bottom of the drum 23 is located on the side of the barrel bridge 33.
  • the drum 20 is pivoted via its bottom 23 on the barrel bridge 33 by means of a bearing ball bearings 34.
  • this bearing comprises:
  • the bottom 23 may have a slight extra thickness to strengthen it at the passage of the screws.
  • this extra thickness makes it possible to define a slight clearance between the bottom 23 and the other elements of the bearing, avoiding any superfluous friction.
  • the head of the screws fixing the intermediate ring can take place in a recess 40 formed in the barrel bridge 33.
  • the bearing 34 thus comprises an inner ring 42 provided with a circular central hole, wherein the shaft 14 is intended to take place.
  • the bearing rings are shaped to have bearing surfaces for the balls, without the need to detail it here. Rings can complete the rings to perfectly define the ball raceway
  • the bearings used are micro-bearings whose accuracy must be maximum to ensure perfect positioning of the pivot axes and a guide optimal moving elements.
  • the barrel bridge 33 has an opening for the free passage of the shaft. Given the presence of the bearing as described above, there is no need to provide a bearing for the pivoting of the shaft at the barrel bridge 33. Such a bearing is also not useful in the background 23.
  • the barrel shaft 14 is not mounted cantilever. Its end located on the side of the plate 10 is pivoted by a second ball bearing 49 arranged in the plate.
  • this bearing 49 comprises a first outer ring 52 driven into the plate and a second inner ring 54 integral with the shaft 14.
  • the second bearing 49 is directly housed in the drum cover 20, which reduces the thickness of the assembly.
  • the barrel shaft 14 is no longer pivoted in the plate but pivots with reference to the lid 28.
  • the barrel shaft 14 is mounted completely flying.
  • the barrel shaft is pivoted only on the barrel bridge 33 and is neither in reference to the plate, nor in reference to the lid 28 of the drum.
  • the barrel shaft can be shortened and the thickness of the barrel lid can be reduced, making the whole thing even thinner. We could even completely remove the lid of the barrel.
  • This construction is particularly advantageous because it allows to assemble the barrel on the barrel bridge independently of the assembly of the other parts of the movement. The assembly operations of the movement are facilitated.
  • a small spacer or a slight shoulder 60 may be provided on the cylinder shaft to position the ratchet wheel in height.
  • the ratchet wheel 30 platinum side.
  • the ratchet wheel is mounted on the face of the plate 10 opposite to that which receives the barrel.
  • the intermediate ring 36 is fixed to the bottom of the drum, and the outer ring 38 is fixed to the plate, or while the intermediate ring 36 is fixed to the plate, and the outer ring 38 fixed basically.
  • 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)
  • Electric Clocks (AREA)
  • Toys (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP11716263.6A 2010-04-26 2011-04-26 Uhr Not-in-force EP2564276B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00603/10A CH702994B1 (fr) 2010-04-26 2010-04-26 Pièce d'horlogerie comprenant un barillet monté sur un pont de barillet.
PCT/EP2011/056585 WO2011134960A1 (fr) 2010-04-26 2011-04-26 Pièce d'horlogerie

Publications (2)

Publication Number Publication Date
EP2564276A1 true EP2564276A1 (de) 2013-03-06
EP2564276B1 EP2564276B1 (de) 2014-06-25

Family

ID=44369994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11716263.6A Not-in-force EP2564276B1 (de) 2010-04-26 2011-04-26 Uhr

Country Status (7)

Country Link
US (1) US8807828B2 (de)
EP (1) EP2564276B1 (de)
JP (1) JP2013527442A (de)
CN (1) CN102893223B (de)
CH (1) CH702994B1 (de)
HK (1) HK1178984A1 (de)
WO (1) WO2011134960A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2746868B1 (de) * 2012-12-18 2016-04-27 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr
EP2746865B1 (de) * 2012-12-18 2016-03-02 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr
CN103293937B (zh) * 2013-05-31 2016-03-30 天王电子（深圳）有限公司 用于机械表的摆轮游丝机构及具有该机构的机械表

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US808176A (en) * 1903-01-21 1905-12-26 Gustave Thalhofer Watch-barrel.
GB955499A (en) * 1962-02-23 1964-04-15 A & M Fell Ltd Improvements in or relating to clocks
CH1357474A4 (de) * 1974-10-09 1976-08-13
CH610178B (fr) 1976-02-18 Bouchet Lassale Sa Mouvement de montre.
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
US6651633B1 (en) * 2000-11-03 2003-11-25 Accessible Technologies, Inc. Centrifugal compressor having compound bearing assembly
JP2006342865A (ja) * 2005-06-08 2006-12-21 Seiko Instruments Inc ボールベアリング装置、並びにこれを備えた自動巻用回転錘構造体及び自動巻時計
CH702035B1 (fr) * 2006-10-20 2011-04-29 Eterna Sa Fabrique D Horlogerie Pièce d'horlogerie.
CH700673A2 (de) * 2009-03-27 2010-09-30 Peter Gschwind Mechanisches manuelles oder automatisches Uhrwerk.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011134960A1 *

Also Published As

Publication number Publication date
WO2011134960A1 (fr) 2011-11-03
CN102893223A (zh) 2013-01-23
US8807828B2 (en) 2014-08-19
CN102893223B (zh) 2015-01-14
CH702994A2 (fr) 2011-10-31
US20130039155A1 (en) 2013-02-14
CH702994B1 (fr) 2015-07-31
HK1178984A1 (en) 2013-09-19
JP2013527442A (ja) 2013-06-27
EP2564276B1 (de) 2014-06-25

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