EP2936253A1 - Barillet d'horlogerie - Google Patents
Barillet d'horlogerieInfo
- Publication number
- EP2936253A1 EP2936253A1 EP13779838.5A EP13779838A EP2936253A1 EP 2936253 A1 EP2936253 A1 EP 2936253A1 EP 13779838 A EP13779838 A EP 13779838A EP 2936253 A1 EP2936253 A1 EP 2936253A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ratchet
- shaft
- bridge
- drum
- spring
- 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
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
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
- G04B1/14—Mainsprings; Bridles therefor
- G04B1/145—Composition and manufacture of the springs
-
- 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
Definitions
- the invention relates to an arming ratchet of a watch cylinder, said ratchet having an axial passage for threading it onto a shaft comprising means for driving pivoting projecting or reentrant.
- the invention also relates to a watch cylinder for pivotally mounting between a plate and a bridge and comprising at least one spring housed between a pivoting drum and a cover and hung between at its outer end said drum and at its inner end a shaft which is integral in pivoting with such a ratchet about a pivot axis.
- the invention also relates to a watch movement, comprising at least one plate and a bridge and such a cylinder.
- the invention also relates to a watch comprising such a movement.
- the invention relates to the field of watch mechanisms, and more particularly the energy storage mechanisms, the engine barrel type, barrel striking, or the like.
- a solution consists of in a decrease in the diameter of the barrel shaft and the associated core, so as to increase the space available in the drum for the spring.
- the ratio of the bead radius to the thickness of the spring is usually between 10 and 20, and the invention proposes to lower this ratio below 10, and preferably in the range between 5 and 10.
- the dimensioning should not be done lightly, indeed a risk of breakage exists if the bung diameter is too small.
- a ratchet is mounted axially on a barrel axis or on a bung, via a square, the ratchet being generally fixed by an axial screw.
- the size of this screw and that of the square thus condition a minimum diameter of a pivoting surface.
- a shoulder abutting with this pivoting surface limits axial fretting of the shaft or the bung relative to a plate or bridge carrying a stone or the like.
- the document FR 2 329 000 A1 in the name of ETA describes a barrel with a shaft with a non-cylindrical barrel, the catch hook of the spring being contained in a recess delimited by a geometric cylinder defined by the upper and lower spans of this barrel.
- the document XP 001 219 052 A in the name of SOCIETE ODO describes a barrel with a non-cylindrical shaft, carrying a tube which itself carries the snap hook of the spring. This shaft has shoulders and grooves circlips.
- US 730 103 A in the name of ERICKSON discloses a barrel with a non-cylindrical shaft having a faceted portion, called rectangular, which carries a bung carrying the hook hooking the spring.
- CH 15 286 A in the name of DANASINO describes a barrel with a sectional spring gradually increasing from the outside to the inside of the drum.
- the document FR 2 210 784 A1 in the name of ETA discloses a barrel with a one-piece shaft having a longitudinal groove for fastening the spring.
- the invention proposes to improve the design of barrels designed for a large power reserve, giving them good rigidity, particularly at the ratchet, while retaining a reduced number of components, and an acceptable machining cost, or, preferably, more economical than on known barrels.
- the invention thus relates to an arming ratchet of a watch cylinder, said ratchet comprising an axial passage for threading it onto a shaft comprising means for driving pivoting or retracting pivoting, characterized in that said ratchet comprises, at the level of said axial passage, at least one leaf spring allowing the introduction of said ratchet on said shaft and arranged to exert a bearing force on said pivoting drive means, of which said at least one leaf spring forms means complementary drive for driving pivoting said shaft.
- the invention also relates to a watch cylinder for pivotally mounting between a plate and a bridge and comprising at least one spring housed between a pivoting drum and a cover and hung between at its outer end said drum and at its inner end a shaft which is integral in pivoting with such a ratchet about a pivot axis, characterized in that said shaft comprises, around a cylindrical shaft according to said pivot axis, firstly a hook projecting for the attachment of said spring and on the other hand pivoting driving means, projecting or reentrant, which cooperate with complementary drive means that includes said ratchet for its pivoting drive.
- said pivoting drive means constitute an axial abutment of said ratchet along said pivot axis
- said shaft is pivoted at an upper bearing surface in a bore of said bridge or a stone which comprises said bridge
- said ratchet comprises an upper support net whose travel is limited by a lower surface of said bridge 5 or said stone, said ratchet being between said bridge and an upper surface that comprises said drum facing a lower surface said ratchet, and said drum pivots at a bore it comprises on said cylindrical barrel.
- said spring comprises, in the axial direction of said pivot axis, a projecting upper portion arranged to bear on an inner surface of said drum, and a lower projecting portion arranged to come into support on an upper part of said cover.
- the fretting of said drum is limited in lower bearing relative to said ratchet by an upper surface of said drum which is limited by a lower surface of said ratchet, the fretting of said ratchet being limited in lower bearing relative to at said bridge, by a thread of said ratchet which is bounded by a lower surface of said bridge or of a stone which said bridge comprises, and the step of said lid is limited in upper support relative to said plate, by a lower surface of said lid; which is limited by an upper surface of said platen or a stone that includes said platen.
- said spring is made of a cobalt-nickel-chromium-based multiphase alloy comprising from 44 to 46% of cobalt, from 20 to 22% of nickel and from 17 to 19% of chromium. , from 4 to 6% of iron, from 3 to 5% of tungsten, from 3 to 5% of molybdenum, from 0 to 2% of titanium, from 0 to 1% of beryllium, and from Young's modulus of between 200 and 240 GPa and a shear modulus of between 80 and 100 GPa, in said spring has a width / thickness ratio of between 3 and 23, and the ratio of the maximum radius of a bearing surface of the spring of said shaft and the the thickness of said spring is between 3 and 9.
- the invention also relates to a watch movement, comprising at least one plate and a bridge and such a cylinder.
- said bridge comprises an upper abutment plate whose lower surface is arranged to limit the axial displacement of said shaft, and said platen comprises a lower abutment plate whose upper surface is arranged to limit the axial movement of said shaft.
- the invention also relates to a watch comprising such a movement.
- FIG. 1 shows, schematically and in section through its pivot axis, a cylinder according to a first embodiment of the invention
- FIG. 2 shows, schematically and in section through its pivot axis, a cylinder according to a second embodiment of the invention
- FIG. 3 shows schematically in blocks, a timepiece comprising a movement comprising itself a cylinder according to the invention
- FIG. 4 schematically and in plan view, a ratchet according to the invention, equipped with a leaf spring, which is shown in a position of cooperation with a drive plate that includes a shaft (shown cut at the level of a median plane of the ratchet);
- FIG. 5 schematically shows, in section along a plane AA passing through its axis of pivoting, the ratchet of FIG. 4.
- the invention relates to the field of watch mechanisms, and more particularly the energy storage mechanisms, the engine barrel type, barrel striking, or the like.
- the invention relates to a ratchet 2 for cocking a watch cylinder 1.
- This ratchet 2 comprises an axial passage 20 for threading on a shaft 3 having pivoting driving means 42 projecting or reentrant.
- this ratchet 2 comprises, at this axial passage 20, at least one leaf spring 230 allowing the introduction of the ratchet 2 on the shaft 3.
- This leaf spring 230 is arranged to exert an effort of support on the pivot drive means 42 of the shaft 3.
- This at least one leaf spring 230 forms complementary drive means 23, which are complementary to these pivot drive means 42 for the drive in pivoting of the shaft 3.
- the ratchet 2 comprises, for each such leaf spring 230, a slot 231 opening into the axial passage 20. It will be noted that such a leaf spring 230 can be mounted flowing surfaces upper 21 and / or lower of the ratchet 2.
- this ratchet 2 comprises at least one upper support thread 24, for the limitation of stroke of the ratchet 2 relative to a plate or a bridge or a stone.
- the ratchet 2 comprises, in the immediate vicinity of the axial passage 20, at least one lower support thread 25 for limiting the stroke of the ratchet 2 relative to a drum or a barrel plug.
- the invention also relates to a watch cylinder 1 for pivotally mounting between a plate 9 and a bridge 5, and comprising at least one spring 7.
- This spring 7 is housed between a pivoting drum 6 and a cover 8, and hung between, at its outer end the drum 6 and at its inner end a shaft 3.
- the shaft 3 is pivotally integral with such a ratchet 2 about a pivot axis D.
- the shaft 3 comprises, around a cylindrical shaft 31 along the axis of pivoting D, on the one hand a hook 32 projecting for the attachment of the spring 7, and on the other hand means pivoting drive 42, projecting or reentrants, which cooperate with complementary drive means 23 that includes the ratchet 2 for its pivoting drive.
- the drive means 42 may conventionally consist of a square or plates, FIG. 4 illustrates, for example, a simplified, nonlimiting variant with a single flat shaft 42.
- the complementary means 23 of the ratchet 2 can then advantageously consist of at least one leaf spring allowing the introduction of the ratchet 2 on the shaft 3, and also ensuring the pivoting drive.
- pivoting drive means 42 constitute an axial stop of the ratchet 2 along the axis of pivoting D.
- the shaft 3 is pivoted at an upper bearing surface 13 in a bore 51 of the bridge 5 or a stone 52 5 and the ratchet 2 preferably comprises, so as to reduce the friction torque and the loss of efficiency, at least one upper support thread 24 whose stroke is limited by a lower surface 53 of the bridge 5 or stone 52 (as shown in the figures).
- the ratchet 2 is between the bridge 5 and an upper surface 61 that includes the drum 6 facing a lower surface 22 of the ratchet 2. And the drum 6 pivots at a bore 62 that it has on the cylindrical shaft 31 .
- the spring 7 comprises, in the axial direction of the pivot axis D, a projecting upper portion 71 arranged to bear on an inner surface 65 of the drum 6, and a projecting lower portion. 72 arranged to bear on an upper portion 85 of the cover 8. The return of frosting of the shaft 3 is thus provided by the spring 7.
- the drum 6 carries a cover 8, preferably but not necessarily pivotally attached to the drum 6, and a bore 81 cooperates with a bearing 31 of the shaft 3.
- a lower surface 82 of the cover 8 is limited in clearance by a surface upper 93 of the plate 9 or a stone 92 housed in the plate 9, a bore 91 of the plate 9 or the stone 92 serving as a pivot to the bearing 31 of the shaft 3.
- the frolicking of the drum 6 is limited to lower bearing relative to the ratchet 2 by an upper surface 61 of the drum 6 which is limited by a lower surface 22 of the ratchet 2.
- the fretting of the ratchet 2 is limited in lower bearing relative to the bridge 5, by a thread 24 of the ratchet 2 which is limited by a lower surface 53 of the bridge 5 or a stone 52 that includes the bridge 5.
- the frog of the cover 8 is limited in upper support relative to the plate 9, by a lower surface 82 of the cover 8 which is bounded by an upper surface 93 of the plate 9 or a stone 91 that comprises the plate 9.
- the motor spring can be made of different materials: carbon steel, stainless steel, "Nivaflex®", silicon, DLC, quartz, glass, or similar.
- the spring 7 is made of a cobalt-nickel-chromium-based multiphase alloy comprising from 44 to 46% of cobalt, from 20 to 22% of nickel, from 17 to 19% of chromium, from 4 to 6% of iron, 3 to 5% of tungsten, 3 to 5% of molybdenum, 0 to 2% of titanium, 0 to 1% of beryllium, and Young's modulus of between 200 and 240 GPa and a shear modulus between 80 and 100 GPa.
- This spring 7 preferably has a width / thickness ratio of between 3 and 23, and more particularly between 9 and 21.
- the maximum radius of the bearing 31 of the shaft 3 (without taking into account the possible extra thickness specific to a hook 32), made of steel or stainless steel, for example hardened stainless steel 4C27A (also named according to different standards 1 .4197, ASTM 420F, or DIN X22 CrMoNiS 13 1), with respect to the pivot axis D is less than nine times the maximum thickness of the spring 7.
- the embodiments illustrated make it possible to obtain a ratio between the maximum radius of the span 31 of the shaft 3 and the thickness of the spring 7 between 3 and 9, and preferably between 4 and 6, preferably close to five.
- the invention also relates to a watch movement 100 comprising at least one plate 9 and a bridge 5 and such a cylinder 1.
- the bridge 5 may comprise at least one thread intended to cooperate in support, with the least possible contact surface, with the upper surface 21 of the ratchet 2, in addition to or in place of the thread 24 of the ratchet 2.
- the bridge 5 comprises an upper stop plate 56, fixed with screws or rivets 58, or bonded or welded, or the like, a lower surface 57 is arranged to limit the axial displacement of the shaft 3, and the plate 9 comprises a bottom stop plate 96, fixed with screws or rivets 98, or bonded or welded, or the like, an upper surface 97 is arranged to limit the axial movement of the shaft 3.
- the invention also relates to a watch 200 comprising such a movement
- the first variant of Figure 1 is advantageous the shaft 3 is of substantially constant diameter, the hook 32 is easy to machine, the drive means 42 also.
- the bung diameter is limited only by the bulk of these pivoting drive means 42.
- the second variant of Figure 2 ensures the recovery of frog shaft 3 with the spring 7, the shaft 3 adopts the same advantageous configuration at low production cost as in the first variant.
- the bung diameter is limited by the dimensions of the drive means 42, typically a square or the like.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Adornments (AREA)
- Springs (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13779838.5A EP2936253B1 (fr) | 2012-12-18 | 2013-10-21 | Barillet d'horlogerie |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12197746.6A EP2746868B1 (fr) | 2012-12-18 | 2012-12-18 | Barillet d'horlogerie |
| PCT/EP2013/071989 WO2014095126A1 (fr) | 2012-12-18 | 2013-10-21 | Barillet d'horlogerie |
| EP13779838.5A EP2936253B1 (fr) | 2012-12-18 | 2013-10-21 | Barillet d'horlogerie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2936253A1 true EP2936253A1 (fr) | 2015-10-28 |
| EP2936253B1 EP2936253B1 (fr) | 2017-11-29 |
Family
ID=47552772
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12197746.6A Active EP2746868B1 (fr) | 2012-12-18 | 2012-12-18 | Barillet d'horlogerie |
| EP13779838.5A Active EP2936253B1 (fr) | 2012-12-18 | 2013-10-21 | Barillet d'horlogerie |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12197746.6A Active EP2746868B1 (fr) | 2012-12-18 | 2012-12-18 | Barillet d'horlogerie |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9291999B2 (fr) |
| EP (2) | EP2746868B1 (fr) |
| JP (1) | JP6027693B2 (fr) |
| CN (1) | CN104885021B (fr) |
| WO (1) | WO2014095126A1 (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2963504A1 (fr) * | 2014-06-30 | 2016-01-06 | Rolex Sa | Barillet pour pièce d'horlogerie |
| EP3067756B1 (fr) * | 2015-03-09 | 2017-11-22 | Nivarox-FAR S.A. | Ensemble pivotant pour une pièce d'horlogerie |
| CH711870B1 (fr) * | 2015-12-10 | 2019-08-30 | Parmigiani Fleurier S A | Mouvement horloger. |
| JP6753127B2 (ja) * | 2016-04-25 | 2020-09-09 | セイコーエプソン株式会社 | 時計用ムーブメントおよび時計 |
| JP7133909B2 (ja) * | 2016-07-04 | 2022-09-09 | ロレックス・ソシエテ・アノニム | 時計用組立体の製造方法、及び該製造方法により得られる時計用組立体 |
| EP3575885B1 (fr) * | 2018-06-01 | 2022-09-21 | Nivarox-FAR S.A. | Barillet d'horlogerie |
| EP3872576B1 (fr) * | 2020-02-25 | 2024-02-21 | ETA SA Manufacture Horlogère Suisse | Barillet d'horlogerie a arbre vrille |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US163161A (en) * | 1875-05-11 | Improvement in mainsprings for watches | ||
| US161236A (en) * | 1875-03-23 | Improvement in mainsprings for watches | ||
| US174031A (en) * | 1876-02-22 | Improvement in safety device for mainsprings | ||
| DE148352C (fr) | ||||
| CH15286A (fr) * | 1897-09-15 | 1898-04-30 | Giuseppe Danasino | Mouvement de montre à ressort moteur perfectionné |
| US730103A (en) * | 1903-01-13 | 1903-06-02 | Lewis A Erickson | Watch-barrel. |
| US916123A (en) * | 1908-05-25 | 1909-03-23 | Vincent E Duncanson | Clock. |
| GB647819A (en) * | 1944-12-12 | 1950-12-20 | Elgin Nat Watch Co | Cobalt chromium nickel base alloy |
| FR1034443A (fr) * | 1950-04-01 | 1953-07-23 | Ressort d'horlogerie inoxydable présentant une grande résistance à la fatigue et procédé pour sa fabrication | |
| CH343891A (fr) | 1957-12-20 | 1959-12-31 | Revue Fabriques D Horlogerie T | Moteur de montre |
| GB1044852A (en) * | 1965-05-10 | 1966-10-05 | Glashutter Uhrenbetr E Veb | Spring barrel arrangements for watches |
| FR1443494A (fr) * | 1965-06-10 | 1966-06-24 | Glashuetter Uhrenbetr E Veb | Barillet de ressort pour montres |
| CH532806A (de) * | 1971-05-05 | 1972-09-29 | Baumgartner Freres Sa | Federhauslagerung in einem Uhrwerk |
| CH566044A (fr) * | 1972-12-18 | 1975-08-29 | ||
| JPS50122264U (fr) * | 1974-03-22 | 1975-10-06 | ||
| JPS5188757U (fr) * | 1975-01-11 | 1976-07-15 | ||
| CH607738B (de) * | 1975-10-21 | Ebauchesfabrik Eta Ag | Arbre de barillet extractible pour mouvement de montre. | |
| 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. |
-
2012
- 2012-12-18 EP EP12197746.6A patent/EP2746868B1/fr active Active
-
2013
- 2013-10-21 WO PCT/EP2013/071989 patent/WO2014095126A1/fr not_active Ceased
- 2013-10-21 JP JP2015546908A patent/JP6027693B2/ja active Active
- 2013-10-21 US US14/653,484 patent/US9291999B2/en active Active
- 2013-10-21 CN CN201380066191.5A patent/CN104885021B/zh active Active
- 2013-10-21 EP EP13779838.5A patent/EP2936253B1/fr active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014095126A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104885021B (zh) | 2017-04-12 |
| EP2746868B1 (fr) | 2016-04-27 |
| JP2015537225A (ja) | 2015-12-24 |
| HK1214374A1 (zh) | 2016-07-22 |
| US20150309475A1 (en) | 2015-10-29 |
| JP6027693B2 (ja) | 2016-11-16 |
| EP2746868A1 (fr) | 2014-06-25 |
| CN104885021A (zh) | 2015-09-02 |
| WO2014095126A1 (fr) | 2014-06-26 |
| EP2936253B1 (fr) | 2017-11-29 |
| US9291999B2 (en) | 2016-03-22 |
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