EP2570865B1 - Uhren-Federgehäusebaugruppe mit reduziertem Federkerndurchmesser - Google Patents

Uhren-Federgehäusebaugruppe mit reduziertem Federkerndurchmesser Download PDF

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Publication number
EP2570865B1
EP2570865B1 EP20110181355 EP11181355A EP2570865B1 EP 2570865 B1 EP2570865 B1 EP 2570865B1 EP 20110181355 EP20110181355 EP 20110181355 EP 11181355 A EP11181355 A EP 11181355A EP 2570865 B1 EP2570865 B1 EP 2570865B1
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EP
European Patent Office
Prior art keywords
drum
core
barrel assembly
barrel
pivot
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.)
Active
Application number
EP20110181355
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English (en)
French (fr)
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EP2570865A1 (de
Inventor
Alain Zaugg
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.)
Montres Breguet SA
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Montres Breguet SA
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Publication date
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Priority to EP20110181355 priority Critical patent/EP2570865B1/de
Publication of EP2570865A1 publication Critical patent/EP2570865A1/de
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    • 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
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor

Definitions

  • the invention relates to a watch drum assembly, arranged to be mounted between a plate and a bridge of a movement or a timepiece, and comprising at least one mainspring spring mounted between, at a first end a barrel drum, and at a second end a receiving surface that includes a barrel plug coaxial with said drum about a pivot axis.
  • the invention also relates to a watch movement comprising at least one such barrel assembly.
  • the invention also relates to a timepiece comprising at least one such movement and / or at least one such barrel assembly.
  • the invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.
  • one solution consists of a decrease in the diameter of the barrel shaft and the associated bung, so as to increase the space available in the drum. for the spring.
  • the ratio of the bead radius with respect 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.
  • 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.
  • a diameter even greater than that of this shoulder is necessary for a pivoting guide surface of the drum on the shaft or on the bung, combined with a shoulder limiting axial fretting of the drum.
  • the respect of minimal sections of matter implies a quotation chain which results in a large size, difficult to reduce. In particular, it is not enough to reduce all the sizing, because the sections of material are then insufficient to ensure fatigue resistance.
  • the document FR 2 341 885 A1 BOUCHET-LASSALE describes a cylinder cantilever, with a drum suspended and pivoted between three peripheral bearings bearing in an external guide groove of the drum, with a ratchet attached to the bung, which bung is pivoted door-to-door -faux by a ball bearing threaded on an axial journal of the drum.
  • the document FR 2 341 886 A1 BOUCHET-LASSALE describes an ultra-flat movement entirely built with cantilevered mobiles, with removal of the bridges, and incorporation of the barrel of the document FR 2,341,885 above.
  • WO2008 / 046750 discloses a watch cylinder assembly, mounted between a plate and a bridge of a movement of a timepiece, and comprising at least one mainspring mounted between, at a first end a drum barrel, and a second end a receiving surface that comprises a barrel plug coaxial with said drum about a pivot axis.
  • This document also shows that said bung is pivotally guided about said pivot axis by first pivoting guide means arranged to cooperate with said plate, and that said drum is pivotally guided about said pivot axis by second guide means. in pivoting arranged to cooperate with said bridge.
  • the invention proposes to set up a solution allowing a significant reduction of the bung diameter compared to the prior art.
  • the invention relates to a barrel assembly as described in claim 1.
  • Preferred features are described in the dependent claims.
  • the invention relates to the field of watchmaking, and more particularly the field of energy storage barrels, for feeding a movement, a ring, or other functionality of a room watchmaking.
  • the invention relates to a mechanical watch cylinder with reduced bung diameter.
  • the figure 1 a watch cylinder 1 according to the invention, with guiding of its plug 4 on a ball bearing 15, and guiding the drum 3 on other ball bearings 16, and a coaxial guide of the plug 4 with the drum 3 at the pivot axis D of the assembly.
  • the invention relates to a watch barrel assembly 1 comprising at least one mainspring 2 of the barrel.
  • This spring 2 is mounted in torsion between, at a first end 21 a barrel drum 3, and at a second end 22 a receiving surface 5 which comprises a barrel plug 4 coaxial with the drum 3 about a pivot axis D.
  • the maximum radius of the bung 4 with respect to the pivot axis D is less than ten times, and preferably less than six times, the maximum thickness of the spring 2.
  • the barrel 1 clock assembly is arranged to be mounted between a plate 10 and a bridge 11 of a movement 100 or a timepiece 1000.
  • the bung 4 comprises a bore 411 pivoting on a bearing surface 141 which comprises a drum shaft 14 integral with the drum 3.
  • This central guide is particularly advantageous for handling the barrel out of motion. It guarantees a good assembly in spare part.
  • pivoting is provided, according to the invention, by first pivoting guide means 15 for the plug 4, and by second peripheral pivoting guide means 16 for the drum 3.
  • the plug 4 is pivotally guided about the pivot axis D by first pivoting guide means 15 arranged to cooperate with the plate 10.
  • the drum 3 is pivotally guided about the pivot axis D by second means of pivoting guidance 16 peripherals. These are arranged to cooperate with the bridge 11.
  • the barrel assembly 1 further comprises, at the level of the first pivoting guide means 15 on the one hand and at the second pivoting guide means 16 on the other hand, adjustment means the longitudinal gap 6, in the direction of the pivot axis D, between the plate 10 or the bridge 11 on the one hand and respectively the drum 3 or the bung 4 on the other hand, in particular by wedging the cages of the ball bearings preferably constituting the first pivot guide means 15 and the second pivot guide means 16.
  • the receiving surface 5 at the bung 4 is a surface of revolution with respect to the pivot axis D.
  • the spring 2 is enclosed in a chamber 32 delimited by the drum 3 and a lid 7 which is mounted integral with the bung 4.
  • the cover 7 is constituted by a ratchet 12 arranged to receive or transmit the energy stored by the spring 2 in the barrel assembly 1.
  • a cover 7 is fixed on the drum 3, while the bung 4, or a barrel shaft 14 cooperating with this bung 4, carries such a ratchet 12.
  • the first pivoting guide means 15 are constituted by at least one ball bearing, of which an internal cage 15A is guided on a first cylindrical surface 415 that the bung 4 comprises along the axis of pivoting D, and bears directly or indirect against a second bearing 414 that includes the bung 4 and extending perpendicularly to the pivot axis D.
  • This ball bearing comprises an outer cage 15B arranged to be fixed on the plate 10, according to the figure 1 .
  • the second pivot guide means 16 comprise at least three ball bearings or the like, such as rollers or guide pads, arranged to be fixed on the bridge 11, and outside the drum 3 with which a cage of each of the bearings co-operates by pressing at a peripheral guiding surface 17 of the drum 3.
  • a first non-zero axial play J1 exists between the axial end of the drum shaft 14 and a bottom 416 that the bore 411 of the bung 4 comprises.
  • a second non-zero axial clearance J2 exists between an axial end 417 of the bung 4, and an opposing surface 418 that the drum 3 comprises around the drum shaft 14 at a drum bottom 473.
  • the bung 4 is here driven on the barrel shaft 14, by the cooperation of a bore 411 of the bung 4 with a bearing 141 of the shaft 14.
  • the figures illustrate a fat adjustment on a reduced surface, located in the vicinity end 417 of the shaft 14. Beyond, the plug 4 and the shaft 14 are separated by a clearance J3 positive or zero. Naturally, the bore 411 of the bung 4 and the bearing 141 of the shaft 14 of the drum 3 can be separated over their entire length by a clearance J3 guaranteeing only the passage of one into the other.
  • the spring 2 is fixed to the bung 4 by friction.
  • the spring 2 is welded or brazed to the bung 4 so as to form a subset one-piece bung spring.
  • the figure 4 represents a barrel similar to that of the figure 1 , with attachment of the spring 2 on a hook 41 of the bung 4, it is the same on the figure 5 this hook 41 is visible on the figure 2 illustrating the bung of the figure 1 .
  • the figure 5 represents a variant where the bung 4 and the drum 3 are independent, the drum 3 is guided by the second peripheral 16 pivoting guide means, here constituted by bearings, while the bung is mounted cantilevered and guided by the first pivot guide means 15, here constituted by a ball bearing.
  • the invention also relates to a watchmaking movement 100 comprising at least one such barrel assembly 1 for storing energy with an incorporated input, or else a ratchet 12 pivotally mounted on the plug 4, or by a set of teeth drum 13 mounted pivotally mounted to the drum 3, and an outlet respectively formed, or by a toothing drum 13 mounted pivotally integral with the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.
  • the invention also relates to a timepiece 1000 comprising at least one watch movement 100 and / or at least one such barrel assembly 1 for energy storage with an incorporated input, or a ratchet 12 mounted solidarity pivoting the bung 4, or by a toothing drum 13 mounted pivotally integral with the drum 3, and an output constituted respectively, or by a toothing drum 13 mounted to pivotally attached to the drum 3, or by a ratchet 12 mounted pivotally integral with the bung 4.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Rolling Contact Bearings (AREA)

Claims (14)

  1. Uhren-Federgehäuseanordnung (1), die dafür ausgelegt ist, zwischen einer Platine (10) und einer Brücke (11) eines Uhrwerks (100) oder eines Zeitmessgeräts (1000) montiert zu werden, und wenigstens eine Federgehäuse-Gangfeder (2) umfasst, die zwischen einer Trommel (3) des Federgehäuses an einem ersten Ende (21) und einer Aufnahmeoberfläche (5), die ein Drehzapfen (4) des Federgehäuses koaxial um eine Schwenkachse (D) der Trommel (3) aufweist, an einem zweiten Ende (22) verdreht montiert ist, wobei der größte Radius des Zapfens (4) in Bezug auf die Schwenkachse (D) kleiner als die zehnfache größte Dicke der Feder (2) ist, wobei der Zapfen (4) schwenkend um die Schwenkachse (D) durch erste Schwenkführungsmittel (15) geführt wird, die dafür ausgelegt sind, mit der Platine (10) zusammenzuwirken, und die Trommel (3) schwenkend um die Schwenkachse (D) durch zweite Umfangs-Schwenkführungsmittel (16) geführt wird, die dafür ausgelegt sind, mit der Brücke (11) zusammenzuwirken.
  2. Federgehäuseanordnung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Aufnahmeoberfläche (5) eine in Bezug auf die Schwenkachse (D) rotationssymmetrische Oberfläche ist.
  3. Federgehäuseanordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Feder (2) in eine Kammer (32) eingeschlossen ist, die durch die Trommel (3) und einen Deckel (7) begrenzt ist, der fest mit dem Zapfen (4) montiert ist.
  4. Federgehäuseanordnung (1) nach Anspruch 3, dadurch gekennzeichnet, dass der Deckel (7) ein Sperrrad (12) ist, das dafür ausgelegt ist, von der Feder (2) in der Federgehäuseanordnung (1) gespeicherte Energie aufzunehmen oder zu übertragen.
  5. Federgehäuseanordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die ersten Schwenkführungsmittel (15) durch wenigstens ein Kugellager gebildet sind, dessen Innenkäfig (15A) durch einen ersten zylindrischen Bereich (415), den der Zapfen (4) aufweist, längs der Schwenkachse (D) geführt wird und sich direkt oder indirekt an einem zweiten Bereich abstützt, den der Zapfen (4) aufweist und der sich senkrecht zu der Schwenkachse (D) erstreckt.
  6. Federgehäuseanordnung (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das Kugellager einen Außenkäfig (15B) aufweist, der dafür ausgelegt ist, an der Platine (10) befestigt zu werden.
  7. Federgehäuseanordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zweiten Schwenkführungsmittel (16) wenigstens drei Kugellager umfassen, die dafür ausgelegt sind, an der Brücke (11) und außerhalb der Trommel (3) befestigt zu werden, mit der ein Käfig jedes der Kugellager durch Abstützung auf Höhe einer Führungsumfangsoberfläche (17) der Trommel (3) zusammenwirkt.
  8. Federgehäuseanordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Zapfen (4) eine Schwenkbohrung (411) in einem Bereich (141) aufweist, den eine Trommelwelle (14) aufweist, die mit der Trommel (3) fest verbunden ist.
  9. Federgehäuseanordnung (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass ein erstes, von null verschiedenes axiales Spiel (J1) zwischen dem axialen Ende der Trommelwelle (14) und einem Boden (416), den die Bohrung (411) des Zapfens (4) aufweist, vorhanden ist, wobei die Bohrung (411) blind ist.
  10. Federgehäuseanordnung (1) nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass ein zweites, von null verschiedenes axiales Spiel (J2) zwischen einem axialen Ende (417) des Zapfens (4) und einer Gegenoberfläche (418), die die Trommel (3) um die Trommelwelle (14) auf Höhe eines Bodens der Trommel (473) aufweist, vorhanden ist.
  11. Federgehäuseanordnung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Feder (2) an dem Zapfen (4) durch Reibung befestigt ist.
  12. Federgehäuseanordnung (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Feder (2) mit dem Zapfen (4) verschweißt oder verlötet ist, derart, dass eine Monoblock-Feder/Zapfen-Unteranordnung gebildet wird.
  13. Uhrwerk (100), das wenigstens eine Federgehäuseanordnung (1) nach einem der vorhergehenden Ansprüche für die Speicherung von Energie mit einem Eingang, der entweder durch ein Sperrrad (12), das drehfest an dem Zapfen (4) montiert ist, oder durch eine Trommelzahnung (13), die drehfest an der Trommel (3) montiert ist, gebildet ist, und einem Ausgang, der entsprechend entweder durch eine Trommelzahnung (13), die drehfest an der Trommel (3) montiert ist, oder durch ein Sperrrad (12), das drehfest an dem Zapfen (4) montiert ist, gebildet ist, umfasst.
  14. Zeitmessgerät (1000), das wenigstens ein Uhrwerk (100) nach Anspruch 13 und/oder wenigstens eine Federgehäuseanordnung (1) nach einem der Ansprüche 1 bis 12 für die Speicherung von Energie mit einem Eingang, der entweder durch ein Sperrrad (12), das drehfest an dem Zapfen (4) montiert ist, oder durch eine Trommelzahnung (13), die drehfest an der Trommel (3) montiert ist, gebildet ist, und einem Ausgang, der entsprechend entweder durch eine Trommelzahnung (13), die drehfest an der Trommel (3) montiert ist, oder durch ein Sperrrad (12), das drehfest an dem Zapfen (4) montiert ist, gebildet ist, umfasst.
EP20110181355 2011-09-15 2011-09-15 Uhren-Federgehäusebaugruppe mit reduziertem Federkerndurchmesser Active EP2570865B1 (de)

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EP20110181355 EP2570865B1 (de) 2011-09-15 2011-09-15 Uhren-Federgehäusebaugruppe mit reduziertem Federkerndurchmesser

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EP20110181355 EP2570865B1 (de) 2011-09-15 2011-09-15 Uhren-Federgehäusebaugruppe mit reduziertem Federkerndurchmesser

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EP2570865A1 EP2570865A1 (de) 2013-03-20
EP2570865B1 true EP2570865B1 (de) 2014-03-05

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US182629A (en) * 1876-09-26 Improvement in watch-barrels
FR1473744A (fr) * 1966-04-04 1967-03-17 Ghielmetti S A Boîtier de ressort pour montres à remontage automatique
IT1074807B (it) * 1976-02-18 1985-04-20 Bouchet Lassale Sa Dispositivo di imperniamento per bariletto d'orologio
CH610178B (fr) * 1976-02-18 Bouchet Lassale Sa Mouvement de montre.
CH702035B1 (fr) * 2006-10-20 2011-04-29 Eterna Sa Fabrique D Horlogerie Pièce d'horlogerie.

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