WO2014095123A1 - Barillet d'horlogerie - Google Patents
Barillet d'horlogerie Download PDFInfo
- Publication number
- WO2014095123A1 WO2014095123A1 PCT/EP2013/071918 EP2013071918W WO2014095123A1 WO 2014095123 A1 WO2014095123 A1 WO 2014095123A1 EP 2013071918 W EP2013071918 W EP 2013071918W WO 2014095123 A1 WO2014095123 A1 WO 2014095123A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drum
- ratchet
- bridge
- plate
- shaft
- Prior art date
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
Definitions
- the invention 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 pivotally with a ratchet about a pivot axis, said barrel having a monobloc subassembly coaxial with said pivot axis and grouping said shaft and a core provided with a flange for limiting the axial frustum of said drum.
- 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.
- US 804 728 to JOHNSON discloses a barrel whose shaft carries a threaded hub, which itself carries a barrel spring. Two components are thus necessary for the internal maintenance of the spring.
- the barrel drum is guided by a stone that is not monoblock with the tree.
- the reset ratchet is located on the other side of the barrel bridge.
- the carrying portion of the drive square of the ratchet is not constituted by a flange, but by the end of the shaft which is projecting beyond the bridge, the side opposite the drum.
- the document CH 83 330 A BEAULIEU WATCH CO describes a cylinder without lid, comprising a bung screwed on a tree.
- the drum is adjusted crazy on the shaft, between a bearing of the tree and the bung.
- the internal maintenance of the spring requires two components.
- the document CH 295 135 A BRAC AG describes a cylinder whose plate comprises a ratchet of the ratchet.
- the invention proposes to improve the design of barrels designed for a large power reserve, providing them with good rigidity, in particular at the level of 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 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.
- said barrel which is integral in pivoting with a ratchet about a pivot axis, said barrel having a monobloc subassembly coaxial with said pivot axis and grouping said shaft and a core provided with a flange for limiting the axial frust of said drum , characterized in that said flange carries pivoting drive means for pivoting said ratchet which is axially free in the direction of said pivot axis, and in that the rim of said drum is limited in lower support with respect to said one-piece subassembly by an upper surface of said drum which is bounded by a lower shoulder of said subset mo nobloc, in that the fretting of said ratchet is limited in lower bearing relative to said bridge, by an upper surface
- said monobloc subassembly is pivoted at an upper bearing surface in a bore of said bridge or a stone that comprises said bridge, and comprises an upper shoulder, the stroke of which is limited by a lower surface of said bridge or said stone, said ratchet being between said upper shoulder and a lower shoulder that comprises said one-piece subassembly at said core, which lower shoulder limits the travel of an upper surface of said drum which drum pivots to level of a bore it comprises with a cylindrical surface of said core.
- said lower shoulder is constituted by a lower bearing surface of said collar.
- said collar separates said drum from said ratchet, and comprises an upper bearing surface for supporting a lower surface of said ratchet, and it carries said pivoting drive means. on the opposite side to that of said lower bearing surface and beyond said upper bearing surface.
- 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.
- 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.
- 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 thus 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 hooked between, at its outer end the drum 6 and at its inner end a shaft 3.
- the shaft 3 is pivotally integral with a ratchet 2 about a pivot axis D.
- the barrel 1 comprises a monobloc subassembly 10 coaxial with the shaft 3 and comprising this shaft 3 and a core 4 provided with a collar 17 for limiting the axial frustum of the drum 6.
- This flange 17 is carrying pivoting drive means 42, such as flat, square, or the like, for the pivoting drive of the ratchet 2, at the level of complementary drive means 23.
- This ratchet 2 is axially free in the direction of the pivot axis D.
- This monobloc subassembly 10 is pivoted at an upper bearing surface 13 in a bore 51 of the bridge 5 or a stone 52 that includes the bridge 5, and has an upper shoulder 1 1, whose stroke is limited by a lower surface 53 of the bridge 5 or the stone 52.
- the ratchet 2 is between the upper shoulder 1 1 and a lower shoulder 12 that includes the monoblock subassembly 10 at the core 4.
- This lower shoulder 12 limits the race of an upper surface 61 of the drum 6.
- This drum 6 pivots at a bore 62 which it comprises with a cylindrical bearing surface 41 of the core 4.
- this lower shoulder 12 is constituted by a lower bearing surface 16 of the collar 17.
- the collar 17 separates the drum 6 from the ratchet 2, and has an upper bearing surface 15 for supporting a lower surface 22 of the ratchet 2 And this collar 17 bears the pivot drive means 42 on the opposite side to that of the lower bearing surface 16 and beyond the upper bearing surface 15, on the bridge side 5.
- the shaft 3 comprises a preferably cylindrical surface 31, which is preferably of smaller diameter than that of the cylindrical surface 41 of the core 4.
- the shaft 3 carries the spring 7, or at its bearing surface 31, on which the spring 7 is immobilized by friction or welded, or on a hook 32 that includes the shaft 3 around such a span 31.
- the shaft 3 is pivotally mounted in a bore 91 of the plate 9 or a stone 92 that comprises the plate 9.
- the bearing 31 extends, and constitutes the pivot surface in the bore 91 or this stone 92.
- 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 in lower support relative to the ratchet 2, by an upper surface 61 of the drum 6 which is limited by a lower shoulder 12 of the monobloc subassembly 10.
- the fretting of the ratchet 2 is limited in lower support relative to the bridge 5, by an upper shoulder 1 1 of the monobloc subassembly 10 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 limited by an upper surface 93 of the plate 9 or a stone 91 that includes 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.
- FIGS 1 and 2 illustrate two preferred but non-limiting variants, which are each described in detail below:
- the frolicking of the drum 6 is limited in lower bearing relative to the monoblock subassembly 10 by an upper surface 61 of the drum 6 which is limited by a lower shoulder 12 of the monobloc subassembly 10.
- the fretting of the ratchet 2 is limited in lower support relative to the bridge 5, by an upper surface 21 of the ratchet 2 which is limited by a net 54 or a lower surface 53 of the bridge 5 or a stone 52 that includes the bridge 5.
- the fretting of the ratchet 2 is limited in upper support relative to the monoblock subassembly 10 by a lower surface 22 of the ratchet 2 which is limited by an upper bearing surface 15 of a collar 17 of the monobloc subassembly 10.
- 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 limited by an upper surface 93 of the plate 9 or a stone 91 that includes the plate 9.
- the frolicking of the drum 6 is limited in lower bearing relative to the monoblock subassembly 10 by an upper surface 61 of the drum 6 which is limited by a lower shoulder 12 of the monobloc subassembly 10.
- the fretting of the ratchet 2 is limited in lower support relative to the bridge 5, by an upper surface 21 of the ratchet 2 which is limited by a net 54 or a lower surface 53 of the bridge 5 or a stone 52 that includes the bridge 5.
- the fretting of the ratchet 2 is limited in upper support relative to the drum 6 by a lower surface 22 of the ratchet 2 which is limited by an upper surface 61 of the drum 6.
- 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 limited by an upper surface 93 of the plate 9 or a stone 91 that includes the plate.
- the first variant of Figure 1 is advantageous because the ratchet is free axially, and the flange on the shaft facilitates assembly.
- the advantage of this construction is that there is no limit to the bung diameter.
- the second variant of FIG. 2 also includes an axially free ratchet, there is double recovery on the drum.
- the bung diameter is limited by the dimensions of the drive means 42, typically a square or the like.
- 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 comprises at least one thread 54 intended to cooperate in support, with the least possible contact surface, with the upper surface 21 of the ratchet 2.
- the invention also relates to a watch 200 comprising such a movement
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Adornments (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015532475A JP5918448B2 (ja) | 2012-12-18 | 2013-10-21 | 計時器用バレル |
US14/419,573 US9471036B2 (en) | 2012-12-18 | 2013-10-21 | Timepiece barrel |
CN201380050570.5A CN104685424B (zh) | 2012-12-18 | 2013-10-21 | 钟表发条盒 |
HK15111136.5A HK1210525A1 (en) | 2012-12-18 | 2015-11-11 | Timepiece barrel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12197745.8 | 2012-12-18 | ||
EP12197745.8A EP2746867B1 (fr) | 2012-12-18 | 2012-12-18 | Barillet d'horlogerie |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014095123A1 true WO2014095123A1 (fr) | 2014-06-26 |
Family
ID=47552771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/071918 WO2014095123A1 (fr) | 2012-12-18 | 2013-10-21 | Barillet d'horlogerie |
Country Status (6)
Country | Link |
---|---|
US (1) | US9471036B2 (fr) |
EP (1) | EP2746867B1 (fr) |
JP (1) | JP5918448B2 (fr) |
CN (1) | CN104685424B (fr) |
HK (1) | HK1210525A1 (fr) |
WO (1) | WO2014095123A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH711870B1 (fr) * | 2015-12-10 | 2019-08-30 | Parmigiani Fleurier S A | Mouvement horloger. |
EP4080292B1 (fr) * | 2021-04-23 | 2023-11-08 | Montres Breguet S.A. | Mécanisme horloger d' affichage d' au moins l 'indication de l' heure unique et piece d' horlogerie comprenant un tel mécanisme |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US165831A (en) * | 1875-07-20 | Improvement in barrel-arbors for watches | ||
US804728A (en) | 1905-03-25 | 1905-11-14 | Illinois Watch Company | Watch-barrel. |
US996499A (en) * | 1910-11-25 | 1911-06-27 | Robert L Marshall | Safety spring-barrel. |
CH83330A (fr) | 1919-05-26 | 1919-12-01 | Co Beaulieu Watch | Mouvement de montre |
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 | |
CH295135A (de) | 1951-11-16 | 1953-12-15 | Ag Brac | Uhrwerk. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS446779Y1 (fr) * | 1966-02-01 | 1969-03-12 | ||
JPS5251973A (en) * | 1976-10-18 | 1977-04-26 | Ebauchesfabrik Eta Ag | Drawable incense casket core |
JP3041585B2 (ja) * | 1995-04-28 | 2000-05-15 | セイコーインスツルメンツ株式会社 | ぜんまいの製造方法 |
CH702035B1 (fr) * | 2006-10-20 | 2011-04-29 | Eterna Sa Fabrique D Horlogerie | Pièce d'horlogerie. |
CH699988A2 (fr) * | 2008-11-28 | 2010-05-31 | Patek Philippe Sa Geneve | Organe moteur pour mouvement horloger. |
CH700058B1 (fr) * | 2008-12-15 | 2013-09-13 | Francois Durafourg | Ensemble comprenant un rochet de remontoir fixé sur un arbre de barillet et arbre de barillet destiné à cet ensemble. |
EP2570864B1 (fr) * | 2011-09-15 | 2018-11-14 | Blancpain S.A. | Barillet d'horlogerie à diamètre de bonde réduit |
-
2012
- 2012-12-18 EP EP12197745.8A patent/EP2746867B1/fr active Active
-
2013
- 2013-10-21 CN CN201380050570.5A patent/CN104685424B/zh active Active
- 2013-10-21 US US14/419,573 patent/US9471036B2/en active Active
- 2013-10-21 JP JP2015532475A patent/JP5918448B2/ja active Active
- 2013-10-21 WO PCT/EP2013/071918 patent/WO2014095123A1/fr active Application Filing
-
2015
- 2015-11-11 HK HK15111136.5A patent/HK1210525A1/xx unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US165831A (en) * | 1875-07-20 | Improvement in barrel-arbors for watches | ||
US804728A (en) | 1905-03-25 | 1905-11-14 | Illinois Watch Company | Watch-barrel. |
US996499A (en) * | 1910-11-25 | 1911-06-27 | Robert L Marshall | Safety spring-barrel. |
CH83330A (fr) | 1919-05-26 | 1919-12-01 | Co Beaulieu Watch | Mouvement de montre |
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 | |
CH295135A (de) | 1951-11-16 | 1953-12-15 | Ag Brac | Uhrwerk. |
Also Published As
Publication number | Publication date |
---|---|
EP2746867A1 (fr) | 2014-06-25 |
JP5918448B2 (ja) | 2016-05-18 |
EP2746867B1 (fr) | 2015-12-16 |
US20150220059A1 (en) | 2015-08-06 |
JP2015529339A (ja) | 2015-10-05 |
HK1210525A1 (en) | 2016-04-22 |
CN104685424B (zh) | 2017-03-08 |
US9471036B2 (en) | 2016-10-18 |
CN104685424A (zh) | 2015-06-03 |
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