EP2653938A1 - Horological balance - Google Patents

Abstract

The staff (1) has a balance-spring collet (70) and a balance, where a bearing area (7) of the collet and a main bearing area (5) of the balance are arranged to maintain the collet and the balance remote from each other. A side supporting surface (81) is extended radially to receive the balance at an axial stop. The area of the collet is coupled to another side supporting surface (82). The surfaces define a collar (119). The former surface is turned on same side as a radial shoulder (51). The main area is separated from the bearing area by a seat (8) forming large diameter of collar and staff. Independent claims are also included for the following: (1) a timepiece balance (2) an assortment of timepiece (3) a timepiece movement.

Description

Field of the invention

• une portée principale pour le centrage radial d'un balancier, et, connexe à ladite portée principale, une première surface latérale d'appui s'étendant sensiblement radialement pour recevoir en butée axiale un dit balancier,
• une portée de plateau pour le centrage radial d'une douille de plateau,
• une portée de virole pour le centrage radial d'une virole de spiral.

The invention relates to a clock balance shaft, comprising, around a pivot axis:

• a main bearing for the radial centering of a rocker, and, connected to said main bearing, a first lateral bearing surface extending substantially radially to receive axially a said rocker,
• a plateau span for the radial centering of a plateau bush,
• a ferrule bearing for the radial centering of a spiral shell.

The invention also relates to a pendulum equipped with a clockwork comprising a bare balance wheel whose hub is mounted on such a shaft.

The invention also relates to a sprung balance assembly comprising such a balance equipped with a plateau pin and a plateau notch.

The invention also relates to a watchmaking assortment comprising such a balance-spiral assembly, and comprising an anchor arranged to cooperate with said plate pin and said tray notch

The invention further relates to a watch movement comprising at least one such assortment.

The invention also relates to a timepiece comprising at least one such watch movement.

The invention relates to the field of watch mechanisms, and more particularly the field of assortments with sprung balance and anchor escapement mechanism.

Background of the invention

In a conventional mechanism, a balance shaft carries a rocker fixed by its serge, and a ferrule constituting the movable attachment point of a spiral spring also attached to a plate or a bridge. On the opposite side to the one carrying the ferrule, the balance shaft carries, moving away from the balance beam serge, firstly a large plateau carrying a plateau pin which cooperates with the fork of an anchor, then a small plate with a notch cooperating with a sting of the same anchor to prevent accidental movements of the fork.

It is necessary to sufficiently size the safety devices in the transverse direction of the movement, that is to say parallel to the pivot axes of the balance and the anchor. Special attention must be paid to safety between the surface of the large plate facing the anchor, and the corresponding face of the anchor rod carrying the horns defining the anchor fork. It is the same between the end of the plateau pin, also called ellipse, and the face of the dart turned towards this ankle. The same attention must be paid to safety between the other side of the dart and the platinum carrier of the assortment.

It is understood that too large dimensioning of these safeties affects the total thickness of the movement, constant component section.

It is therefore a question of finding a compromise between the operational safety, to avoid any risk of collision, and the total thickness of the movement.

The displacement of components, to ensure safety, is not always easy, due to the presence of the various bridges, the beam of the balance, and other mechanisms with which there is a risk of interference, for example the date discs, which constitute a barrier prohibiting the movement of stones or incablocs to ensure these security features, especially because of the necessary security between the balance rod and the oscillating mass, which is provided by fixed sidewalks, and which prohibit axially moving the balance rod.

Also, the classic solution is to ensure sufficient security and sharing, to the detriment of the thickness of the movement.

Summary of the invention

The invention proposes to improve the safety between a balanced balance-hairspring assembly and an anchor escapement mechanism. The design of a particular type of balance is intended to allow a better relative balancing of security and sharing between them. The invention has a versatile character, to be applicable to the transformation of existing movements, by modifying or replacing the smallest possible number of components. Finally, by the optimization it brings, the invention makes it easier to achieve extra-flat movements.

• une portée principale pour le centrage radial d'un balancier, et, connexe à ladite portée principale, une première surface latérale d'appui s'étendant sensiblement radialement pour recevoir en butée axiale un dit balancier,
• une portée de plateau pour le centrage radial d'une douille de plateau,
• une portée de virole pour le centrage radial d'une virole de spiral,

caractérisé en ce que ladite portée de virole et ladite portée principale sont à distance l'une de l'autre et agencées de façon à maintenir à distance l'un de l'autre une virole montée sur ladite portée de virole et un balancier monté sur ladite portée principale et en ce que ledit arbre comporte une deuxième surface latérale d'appui pour recevoir en butée axiale une virole de spiral montée sur ladite portée de virole, ladite deuxième surface latérale d'appui étant située, ou bien au niveau d'une assiette située entre ladite portée de virole et ladite portée principale, ou bien au niveau d'un épaulement radial que comporte ledit arbre au-delà de la projection de ladite portée principale, sur ledit axe de pivotement.For this purpose, the invention relates to a clock balance shaft, comprising, around a pivot axis:

• a main bearing for the radial centering of a rocker, and, connected to said main bearing, a first lateral bearing surface extending substantially radially to receive axially a said rocker,
• a plateau span for the radial centering of a plateau bush,
• a ferrule bearing for the radial centering of a spiral shell,

characterized in that said ferrule bearing and said main bearing are spaced from each other and arranged to keep at a distance from each other a ferrule mounted on said ferrule bearing and a rocker mounted on said main span and in that said shaft comprises a second lateral bearing surface for receiving in axial abutment a spiral shroud mounted on said ferrule bearing, said second lateral bearing surface being located, or at a plate located between said bearing surface and said main seat, or at a radial shoulder that includes said shaft beyond the projection of said main seat on said pivot axis.

According to a characteristic of the invention, said shaft is integral and comprises a lateral abutment surface for receiving axially bearing a pendulum bushing mounted on said tray span, so as to maintain said tray sleeve at a distance a rocker mounted on said main bearing and held in abutment on said first side surface.

According to a feature of the invention, one of its components comprises a lip of small section to form a locking rivet of a hub of a said beam mounted on said main span.

The invention also relates to a pendulum clock equipped with a bare balance wheel whose hub is mounted on such a shaft, characterized in that said hub is mounted by a bore which it comprises on said main bearing, supported by a first bearing surface on said first lateral support surface and maintained at a second face axially opposed to said first bearing face, or by a rivet resulting from a local deformation of a lip of said shaft, or by an irreversible immobilization of said shaft on said hub at a fastening zone, said equipped balance comprising a plateau pin and a plateau notch, said plateau pin being mounted on said hub or on a plateau bushing chased on a said tray reach, and said tray notch being provided on said shaft or on a tray sleeve driven on said tray span.

The invention also relates to a sprung balance assembly comprising such a balance equipped with a plate pin and a plate notch, characterized in that it comprises, mounted with clamping on said shaft and abutment abutment on said second surface lateral, a spiral shell to which is attached at least one spiral spring.

The invention also relates to a watchmaking assortment comprising such a balance-hairspring assembly, and comprising an anchor arranged to cooperate with said plate pin and said tray notch, characterized in that said anchor is pivotally mounted about an axis an anchor parallel to the axis of pivoting of said shaft and comprises horns arranged to cooperate with said plate pin as close to said main span, and a dart arranged to cooperate with said plate notch further from said main reach , and in that said anchor comprises a rod whose pivot defines said anchor axis, said rod being carrying said dart in its alignment, and carrying a set of said horns reported in a plane substantially parallel to a plane that define said rod and said dart.

The invention also relates to a watch movement comprising at least one such assortment, characterized in that it comprises a carrier plate a first anchor stone, and an anchor bridge carrying a second anchor stone, between which stones is guided in pivoting said anchor, said plate carrying a first anti-shock impact beam guide, and said movement comprising a balance bridge carrying a second anti-shock arm balance guide, between which anti-shock guides is pivotally guided said balance-spiral assembly, and in that said dart is closer than said horns said one of said anti-shock guidance shock that is farthest from said spiral spring.

The invention also relates to a watch movement comprising at least one such assortment, characterized in that it comprises a plate carrying a first anchor stone, and an anchor bridge carrying a second stone of anchor, between which stones is guided in pivoting said anchor, said plate carrying a first balance shock-preventing guide, and said movement comprising a balance bridge bearing a second balance-shock-proof guide, between which anti-shock guidance is guided pivoting said pendulum-spira assembly, and in that said dart is closer than said horns of said one of said shock-guiding which is furthest from said spiral spring.

The invention also relates to a timepiece comprising at least one such watch movement.

Brief description of the drawings

• la figure 1 représente, de façon schématisée, partielle, et en coupe passant par l'axe de pivotement d'un balancier et par l'axe de pivotement d'une ancre avec laquelle coopère ce balancier, un mouvement d'horlogerie comportant un ensemble balancier-spiral et un mécanisme d'échappement à ancre, avec une première variante préférée de réalisation d'un balancier selon l'invention;
• la figure 2 représente, de façon schématisée, partielle, et en coupe passant par son axe de pivotement, une deuxième variante de balancier selon l'invention ;
• la figure 3 représente, de façon schématisée, partielle, et en coupe passant par son axe de pivotement, une troisième variante de balancier selon l'invention ;
• la figure 4 et la figure 5 représentent, de façon schématisée, partielle, et en coupe passant par son axe de pivotement, respectivement une quatrième variante à plateau rapporté sur la figure 4, et une cinquième variante à arbre monobloc avec plateau intégré sur la figure 5;
• la figure 6 représente, de façon schématisée, partielle, et en coupe passant par son axe de pivotement, une sixième variante de balancier selon l'invention ;
• la figure 7 représente, de façon schématisée, partielle, et en coupe passant par son axe de pivotement, une septième variante de balancier selon l'invention ;
• la figure 8 représente, de façon schématisée, partielle, et en coupe passant par son axe de pivotement, une huitième variante de balancier selon l'invention ;
• la figure 9 représente, de façon schématisée, partielle, et en coupe passant par son axe de pivotement, une neuvième variante de balancier selon l'invention ;
• la figure 10 représente, sous forme d'un schéma-blocs, une pièce d'horlogerie comportant un mouvement d'horlogerie avec un ensemble balancier-spiral et un mécanisme d'échappement à ancre, avec un balancier selon l'invention.

Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:

• the figure 1 represents, schematically, partially, and in section passing through the axis of pivoting of a rocker and by the axis of pivoting of an anchor with which this pendulum cooperates, a clockwork movement comprising a balance-spiral assembly and an anchor escapement mechanism, with a first preferred embodiment of a pendulum according to the invention;
• the figure 2 represents, schematically, partially, and in section passing through its axis of pivoting, a second variant of balance according to the invention;
• the figure 3 represents, schematically, partially, and in section passing through its axis of pivoting, a third variant of the balance according to the invention;
• the figure 4 and the figure 5 represent, schematically, partially, and in section passing through its pivot axis, respectively a fourth plate variant reported on the figure 4 , and a fifth variant with a monobloc shaft with integrated plate on the figure 5 ;
• the figure 6 represents, schematically, partially, and in section passing through its axis of pivoting, a sixth variant of the balance according to the invention;
• the figure 7 represents, schematically, partially, and in section passing through its pivot axis, a seventh pendulum variant according to the invention;
• the figure 8 represents, schematically, partially, and in section passing through its pivot axis, an eighth armature variant according to the invention;
• the figure 9 represents, schematically, partially, and in section passing through its pivot axis, a ninth wheel variant according to the invention;
• the figure 10 represents, in the form of a block diagram, a timepiece comprising a clockwork movement with a balance-sprung assembly and an anchor escapement mechanism, with a balance according to the invention.

Detailed Description of the Preferred Embodiments

The invention relates to the field of watch mechanisms, and more particularly the field of assortments with sprung balance and anchor escapement mechanism.

The invention proposes to improve the safety between a balanced balance-hairspring assembly and an anchor escapement mechanism.

The invention relates first of all to a clock balance shaft 1, illustrated by the figures 1 , and 2 at 9 , respectively presenting a first preferred variant and other non-limiting variants of the invention.

• une portée principale 5 ou 65 pour le centrage radial d'un balancier 2, et, connexe à la portée principale 5 ou 65, une première surface latérale d'appui 81 ou 66 s'étendant sensiblement radialement pour recevoir en butée axiale un balancier 2,
• une portée de plateau 6 pour le centrage radial d'une douille de plateau 60,
• une portée de virole 7 pour le centrage radial d'une virole de spiral 70.

Clock balance shaft 1 comprises, around a pivot axis D:

• a main bearing surface 5 or 65 for the radial centering of a rocker 2, and, connected to the main bearing surface 5 or 65, a first lateral bearing surface 81 or 66 extending substantially radially to receive a rocker 2 in axial abutment ,
• a plateau span 6 for the radial centering of a plateau bush 60,
• a ferrule bearing 7 for the radial centering of a spiral shell 70.

According to the invention, the ferrule bearing 7 and the main bearing 5 or 65 are spaced from each other, and arranged so as to keep at a distance from one another a ferrule 70 mounted on the bearing of ferrule 7 and a rocker 2 mounted on the main bearing 5 or 65. And the shaft 1 comprises a second lateral bearing surface 82 or 68 for receiving axially a thrust ring 70 mounted on the bearing surface 7. This second lateral bearing surface 82 or 68 is located, or at a plate 8 located between the ferrule bearing surface 7 and the main bearing surface 5 or 65, or at a radial shoulder that includes the shaft 1 beyond the projection of the main span 5 or 65, on the pivot axis D.

• une portée principale 5 sur les figures 1, 4, 5, 6 et 7, où cette portée principale est directement ménagée sur un axe 11 ou un moyeu épaulé 110 constituant le coeur de l'arbre 1. Cette portée principale est référencée 65 sur les figures 2, 3, 8 et 9 où cette portée principale est ménagée sur un composant rapporté sur cet axe 11 ou ce moyeu 110, ce composant rapporté étant une douille de plateau 60 sur les figures 2 et 3, ou une douille d'espacement 111 sur les figures 8 et 9. Dans l'un ou l'autre cas, cette portée principale sert au centrage radial de le moyeu 20 d'un balancier 2. L'arbre 1 comporte, connexe à la portée principale 5 ou 65, une première surface latérale d'appui. Cette première surface latérale d'appui est référencée 81 sur la figure 1 et sur les figures 6 à 9, où elle est constituée par une surface latérale d'une collerette appelée assiette 8. Cette première surface latérale d'appui est référencée 66 sur les figures 2 à 5. Dans l'un et l'autre cas, cette première surface latérale d'appui s'étend sensiblement radialement, et de préférence radialement perpendiculairement à l'axe de pivotement D de l'arbre 1, pour recevoir en butée axiale le moyeu 20 d'un balancier 2,
• une portée de plateau 6 pour le centrage radial d'une douille de plateau 60,
• une portée de virole 7 pour le centrage radial d'une virole de spiral 70.

This tree 1 comprises:

• a main scope 5 on the figures 1 , 4 , 5 , 6 and 7 , where this main surface is directly formed on an axis 11 or a shouldered hub 110 constituting the heart of the shaft 1. This main bearing is referenced 65 on the Figures 2, 3 , 8 and 9 where this main surface is provided on a component attached to this axis 11 or this hub 110, this reported component being a plate sleeve 60 on the Figures 2 and 3 , or a spacer sleeve 111 on the Figures 8 and 9 . In either case, this main surface is used for the radial centering of the hub 20 of a rocker 2. The shaft 1 comprises, connected to the main span 5 or 65, a first lateral bearing surface. This first surface lateral support is referenced 81 on the figure 1 and on Figures 6 to 9 , where it is constituted by a lateral surface of a collar called plate 8. This first lateral bearing surface is referenced 66 on the Figures 2 to 5 . In either case, this first lateral bearing surface extends substantially radially and preferably radially perpendicularly to the pivot axis D of the shaft 1, in order to receive the hub 20 in axial abutment. a pendulum 2,
• a plateau span 6 for the radial centering of a plateau bush 60,
• a ferrule bearing 7 for the radial centering of a spiral shell 70.

In all the variants illustrated here, the balance shaft 1 is carrying spacing means, constituted either by a shoulder of an axis 11 or a shouldered hub 110 constituting the heart of this shaft 1, or by a component attached to the latter, such as plate 8, bushing 111, or reported plate bushing 60. These spacing means make it possible to avoid the direct support of the shell 70 on the beam serge as in conventional configurations.

The shaft 1 comprises a second lateral bearing surface for receiving, in axial abutment, a spiral shroud 70 mounted on the ferrule bearing surface 7. This second lateral bearing surface is referenced 82 on the figure 1 and on Figures 6 to 9 where it constitutes the lateral surface of the plate 8 opposite to the first lateral bearing surface 81. The second lateral bearing surface is referenced 68 on the Figures 2 to 5 where it is constituted, on the Figures 2 and 3 by an end surface of a plateau bush 60 driven on a straight axis 11, and on the Figures 4 and 5 by a shoulder of a flange of a shouldered hub 110 specific to these variants.

The invention seeks to increase security. A classic obstacle, associated with a usual assembly with the successive stacking of a ferrule resting on a serge, itself resting on a plate in turn resting on a plateau bush, lies in the high bulk of the plate located between the serge and the plateau sleeve (or the large plateau of the plateau ankle). The invention thus proposes several configurations making it possible to eliminate this plate between the serge and the plateau, and to bring them as close as possible to one another, while ensuring the required security.

• la figure 1 illustre une premier mode avec un arbre 1 qui comporte un moyeu épaulé 110 monobloc, qui incorpore une collerette formant assiette 8. Une des surfaces latérales de cette assiette 8 constitue une première surface latérale d'appui 81 pour l'appui en butée axiale d'une serge de balancier 20 chassée sur la portée principale 5 du moyeu épaulé 110. Cette portée principale 5 est immédiatement voisine de cette assiette 8. Le moyeu épaulé 110 comporte encore une surface latérale de butée 9 pour la réception en appui axial d'une douille de plateau de balancier 60 rapportée, montée sur la portée de plateau 6. La surface latérale de butée 9 est alors disposée de façon à maintenir cette douille de plateau 60 à distance de le moyeu 20 d'un balancier 2 monté sur la portée principale 5 et maintenu en appui sur la première surface latérale 81, et à empêcher tout contact entre cette douille de plateau 60 et ce balancier 2. Dans cette variante de la figure 1, la douille de plateau 60 ne participe pas au positionnement ni au maintien de le moyeu 20, et peut être indépendante de l'arbre 1. II en est de même des variantes illustrées aux figures 7 à 9,
• sur les figures 2 à 5, en revanche, la douille de plateau 60 fait nécessairement partie de l'arbre de balancier 1, car elle participe à l'appui de le moyeu 20. La douille de plateau 60 est un composant rapporté sur un axe rectiligne 11 sur les figures 2 et 3, sur un moyeu épaulé 110 sur la figure 4. Sur la variante de la figure 5, la douille de plateau, ou du moins le petit plateau 63, est intégré à un tel moyeu épaulé 110 qui porte directement le moyeu 20.

Several configurations are possible for the reception of a balance hub 20 2:

• the figure 1 illustrates a first embodiment with a shaft 1 which comprises a shouldered hub 110, which incorporates a plate-forming flange 8. One of the lateral surfaces of this plate 8 constitutes a first lateral bearing surface 81 for axial abutment bearing a balance rod 20 driven on the main bearing 5 of the shoulder hub 110. This main bearing 5 is immediately adjacent to this plate 8. The shouldered hub 110 further comprises a lateral abutment surface 9 for receiving axial support of a bushing The stopper side surface 9 is then arranged to hold the tray sleeve 60 away from the hub 20 of a rocker 2 mounted on the main bearing surface. and maintained in abutment on the first lateral surface 81, and in preventing any contact between this plate socket 60 and this rocker arm 2. In this variant of the figure 1 , the plateau bushing 60 does not participate in the positioning or maintenance of the hub 20, and may be independent of the shaft 1. It is the same for the variants illustrated in FIGS. Figures 7 to 9 ,
• on the Figures 2 to 5 on the other hand, the plate bush 60 is necessarily part of the rocker shaft 1, because it participates in the support of the hub 20. The plate bushing 60 is a component attached to a straight axis 11 on the Figures 2 and 3 , on a shouldered hub 110 on the figure 4 . On the variant of the figure 5 , the tray sleeve, or at least the small plate 63, is integrated with such a shouldered hub 110 which carries the hub 20 directly.

In the case of Figures 2 to 4 , the shaft 1 is thus in two parts and comprises a tray bush 60 driven on the tray span 6 that includes an axis 11, the plate 60 being arranged to constitute a bearing abutment of a rocker 2 mounted on the main bearing 5 and maintained in abutment on the first lateral surface 81.

On the figure 2 , as on the figure 3 , the shaft 1 is in two parts and has a plateau bush 60 driven on the plateau range 6 that comprises a rectilinear axis 11, the plate 60 having a first lateral bearing surface 66 constituting a bearing abutment of a rocker 2 mounted on the main bearing 65 which also comprises the plateau bushing 60.

On the figure 4 , the shaft 1 is in two parts and comprises a plate bush 60 driven on the plateau surface 6 that comprises a stepped hub 110, the plate 60 having a first lateral bearing surface 66 constituting a bearing abutment of a rocker 2 mounted on the main surface 5 that includes a flange 67 of the shouldered hub 110.

The variant of the figure 5 differs from that of the figure 1 , in that it has no attitude on the side of the shell 70, and in that the only axial support of the hub 20 is on a bearing surface 66 of the hub shoulder 110. The shaft 1 is integral and comprises a shouldered hub 110 including a flange 61 has a first lateral bearing surface 66 constituting a bearing abutment of a rocker 2 mounted on the main surface 5 that also includes the flange 61.

Preferably, to facilitate assembly, the tray centering surface 6 has a maximum diameter less than or equal to the minimum diameter of the main surface 5 or 65.

In the embodiment of Figures 2 to 4 a tray bushing 60 is driven on the tray span 6, and has at least the first bearing surface 66 connected to the main span. This main scope is constituted, or on the figure 4 by a main surface 5 that includes a flange 67 protruding radially from the axis 11 as, or on the Figures 2 and 3 by a bearing 65 that includes the plate 60 adjacent to the first lateral bearing surface 66.

In a preferred embodiment, the shaft 1 is in one piece and has a lateral abutment surface 9 for axially supporting a pendulum bushing socket 60 mounted on the plateau span 6, so as to hold the plateau bush 60 away from a rocker 2 mounted on the main surface 5 and held in abutment on the first side surface 81.

• une assiette 8 de diamètre supérieur à celui de la portée principale 5, comportant la première surface latérale 81 pour recevoir en butée axiale un balancier 2, et la deuxième surface latérale 82 pour recevoir en butée axiale une virole de spiral 70 montée sur la portée de virole 7,
• une surface latérale de butée 9 d'encombrement diamétral inférieur ou égal à celui de la portée principale 5, pour la réception en appui d'une douille de plateau de balancier 60 montée sur la portée de plateau 6.

So, in the first embodiment of the figure 1 , the shaft 1 is a shoulder hub 110 integral and comprises, on either side of the main scope 5:

• a plate 8 of diameter greater than that of the main surface 5, having the first lateral surface 81 to receive axially a rocker 2, and the second lateral surface 82 to receive in axial abutment a spiral shell 70 mounted on the scope of ferrule 7,
• a lateral abutment surface 9 of diametral bulkiness less than or equal to that of the main surface 5, for the reception in support of a balance plate sleeve 60 mounted on the plateau surface 6.

• d'un premier côté axial 51 de la portée principale 5 laquelle est agencée pour le centrage d'un balancier 2 selon un axe de pivotement D de l'arbre 1, et en s'éloignant de la portée principale 5 :
• au moins une portée de plateau 6 pour le centrage d'au moins un plateau sur l'axe de pivotement D, la portée de plateau 6 étant de diamètre inférieur ou égal à celui de la portée principale 5,
• des premiers 3 moyens de guidage en pivotement autour de l'axe de pivotement D, dont l'encombrement diamétral est inférieur ou égal au diamètre de la portée de plateau 6,
• d'un deuxième côté axial 52, opposé au premier côté axial 51, de la portée principale 5 et en s'éloignant de celle-ci:
• la portée de virole 7 pour le centrage d'au moins une virole de spiral selon l'axe de pivotement D,
• des deuxièmes 4 moyens de guidage en pivotement autour de l'axe de pivotement D, dont l'encombrement diamétral est inférieur ou égal au diamètre de la portée de virole 7.

In a preferred manner, this tree 1 comprises:

• a first axial side 51 of the main bearing 5 which is arranged for centering a rocker 2 according to a pivot axis D of the shaft 1, and away from the main bearing 5:
• at least one tray surface 6 for centering at least one tray on the pivot axis D, the tray surface 6 being of diameter less than or equal to that of the main surface 5,
• first 3 pivoting guide means about the pivot axis D, whose diametral size is less than or equal to the diameter of the tray span 6,
• a second axial side 52, opposite to the first axial side 51, of the main bearing surface 5 and moving away from it:
• the ferrule bearing 7 for centering at least one spiral shell according to the pivot axis D,
• second 4 pivoting guide means around the pivot axis D, the diametral bulk of which is less than or equal to the diameter of the ferrule bearing surface 7.

• la première surface latérale d'appui 81 qui est agencée pour recevoir en butée la serge d'un balancier 2, et la deuxième surface latérale d'appui 82, constituent deux faces de l'assiette 8 opposées axialement selon l'axe de pivotement D
• la surface latérale de butée 9 est saillante axialement par rapport à la portée principale 5 vers la portée de plateau 6.

Advantageously and specific to the invention:

• the first lateral bearing surface 81 which is arranged to abut the serge of a rocker 2, and the second lateral bearing surface 82 constitute two faces of the plate 8 opposite axially along the pivot axis D
• the abutment lateral surface 9 is projecting axially with respect to the main bearing 5 towards the tray span 6.

In a preferred embodiment, the main bearing surface 5 comprises, from a first axial side 51 facing the plate bearing surface 6, a lip 53 of small section to constitute, by riveting or riveting or the like, a rivet 54 for locking a hub 20 of a rocker 2 mounted on the main bearing 5 in abutment abutment on the first side surface 81. figure 1 shows two details, with, to the left of the pivot axis D, the rivet 53 as it is manufactured, substantially parallel to the axis D, so as to allow the mounting of the hub 20 of the balance 2. A right of the pivot axis D, this rivet is however represented in the folded position of maintenance on the hub 20 under the reference 54. On these details, we see a discharge groove allowing creep of the material during the operation of formation of the river 54.

As an alternative to the formation of a rivet, it is possible to fix the balance rod by other means, in particular by clamping on the shaft or on the bearing component of the main span, by laser welding, soldering, by bonding, by local deformation of the shaft or the carrier component of the main scope, these methods being in no way limiting.

In the variants of Figures 2 to 4 , to support the hub 20, the shaft 1 is in two parts and comprises a tray bushing 60 driven on the tray span 6 that includes an axis 11.

In the case of figure 4 , the hub 20 which carries the plate pin 62. The plate sleeve 60, which is attached to the axis 11, is arranged to constitute a bearing abutment of a rocker 2 mounted in radial abutment on the main surface 5 of the axis 11, and maintained in axial support on a bearing surface 66 of a flange 61 of the plate bushing 60, similar to the usual large plate, but not carrying the plate pin.

On the Figures 2 and 3 , the hub 20 is in radial abutment on a bearing surface 65 of the plate 60, and in axial bearing on a bearing surface 66 of a collar 61 of the plateau bushing 60. This collar 61, on the figure 2 is the large usual plate bearing the ankle 62. On the other hand, on the figure 3 , the collar does not constitute the large usual plate carrying the plateau pin 62, since, so similar to the variant of the figure 4 it is also the hub 20 which carries this pin 62 in this variant.

The figure 5 illustrates a one-piece version with a stepped hub 110, integrated tray. The hub 20 carries the plate pin 62, and bears axially on a surface 66 of a flange 61 of the shouldered hub 110, and bears radially on a bearing surface 5 of this shouldered hub 110.

In the achievements of figures 1 and 2 , the tray bushing 60 comprises a large tray 61 which carries a tray pin 62, and is integral with a small tray 63 having a tray notch 64 and further than it from the main bearing, referenced 5 on the figure 1 , 65 on the figure 2 .

In the achievements of Figures 3 and 4 , the hub 20 of the balance 2 carries a plateau pin 62. The plate 60 comprises a large plate 61 carrying the first lateral bearing surface 66, and which is integral with a small plate 63 having a notch of platform 64 and further away from the main span 5, 65.

On the figure 6 , the shaft 1 is in two parts and comprises a plate 8 driven on a rectilinear range 113 that comprises a shouldered hub 110, between the main surface 5 and the bearing surface 7, the plate 8 having a first lateral surface of support 81 and a second lateral bearing surface 82,: And the rectilinear seat 113 comprises, a first axial side 51 turned towards the tray span 6, a lip 53 of small section to form a riveting 54 of blocking a hub 20 of a rocker 2 mounted on the main surface 5. The shouldered hub 110 has a shoulder face 112 constituting an axial abutment for a plateau bushing 60 mounted on the plateau surface 6 that comprises the stepped hub 110.

The variant of the figure 6 comprises a plate 8 driven on a shouldered hub 110. The spiral shell 70 is also driven on this shouldered hub 110, in axial support on the plate 8 which itself bears on the balance hub 20. This hub 20 is maintained on the opposite side by a rivet 54, as in the version of the figure 1 . An inset 60 insert socket, comprising a large plate 61 and a small plate 63 usual, is driven on the shouldered hub 110, bearing on a shoulder face 112.

On the figure 7 , the shaft 1 is in three parts and comprises, intended to be driven on a rectilinear range 113 that includes a rectilinear axis 11 on either side of a rocker 2 mounted on the main surface 5 of the rectilinear seat 113, a plate 8 having a first lateral bearing surface 81 and a second lateral bearing surface 82, and a spacer ring 208 constituting an axial abutment for a plate bushing 60 mounted on the tray surface 6 of the rectilinear bearing surface 113.

The variant of the figure 7 relates to a shaft 1 having a rectilinear smooth axis 11, on which are driven the shell 70, axially bearing on the plate 8, itself in axial bearing on the hub 20, in axial support on a spacer ring 208 with an added plateau bush 60, comprising a large tray 61 and a small tray 63 usual, carrying the plateau pin 62 and the notch 64.

On the figure 8 , the shaft 1 is in two parts and has a spacing sleeve 111 between the ferrule bearing 7 and the tray span 6, the spacer sleeve 111 having a trim flange 8 having the main span 65 and the first lateral bearing surface 81, the spacer sleeve being driven on a rectilinear bearing surface 113 which comprises a rectilinear axis 11 between the main bearing surface 5 and the bearing surface 7, this plate 8 further comprising a second lateral bearing surface 82 , and the spacer sleeve 111 constituting an axial stop for a plateau bushing 60 mounted on the plateau span 6.

The variant of the figure 8 relates to a shaft 1 having a rectilinear smooth axis 11, on which are driven the ferrule 70, axially supported on a spacing sleeve 111. This spacing sleeve 111 comprises, under a plate-forming flange 8, the main surface 65 of radial support of the hub 20, and a first lateral bearing surface 81 for the axial support of the hub 20, on the opposite side to the shell 70. The sleeve 111 bears axially on a reported plateau bushing 60, comprising a large plate 61 and a small plate 63 usual, carrying the plate pin 62 and the notch 64.

On the figure 9 , the shaft 1 is in three parts and comprises, driven side by side on a rectilinear range 113 that comprises a rectilinear axis 11, a plate 8 having a first lateral bearing surface 81 and a second surface lateral support 82, and a spacing bushing 111 carrying the main span 65, the spacer sleeve 111 constituting an axial stop for a plateau bushing 60 mounted on the plateau span 6.

The variant of the figure 9 relates to a shaft 1 having a rectilinear smooth axis 11, on which are driven the ferrule 70, axially supported on a plate 8, itself bearing axially on a spacing sleeve 111. The plate 8 comprises the first lateral surface support 81 for the axial support of the hub 20, on the opposite side to the shell 70. The sleeve 111 comprises the main bearing surface 65 of radial support of the hub 20, and is axially supported on a plateau bushing 60 reported, having a large tray 61 and a small tray 63 usual, bearing the plate pin 62 and the notch 64.

Preferably, to facilitate assembly, the tray centering surface 6 has a maximum diameter less than or equal to the minimum diameter of the main surface 5, and the shaft 1 has a lateral abutment surface 9 of equal or smaller diameter. to that of the main bearing 5, for receiving in support of a rocker plate 60 mounted on the tray span 6.

Naturally, the various variants illustrated are suitable for holding the hub 20 by rivet, by locally deforming a plate bushing 60, or a flange 67, or a shoulder hub 110, or a bushing. spacing 111, this immobilization mode being represented only on the figures 1 and 4 for the sake of clarity. Preferably, the components concerned comprise, in the naked state, a lip extending parallel to the axis D, intended to form this rivet. Thus, in a particular embodiment of the shaft 1, one of its components comprises a lip 53 of small section to form a rivet 54 for locking a hub 20 of a rocker 2 mounted on the main surface 5 or 65 depending on the case.

The invention also relates to a pendulum equipped with a watchmaker 2 including a rocker 2 having a hub 20 is mounted on such a shaft 1. The hub 20 is mounted, driven, by a bore 23 that it has on the main scope 5 , supported by a first bearing surface 21 on the first lateral bearing surface 81 of the plate 8. In the preferred variant of the figure 1 the hub 20 is held at a second face 22 axially opposed to the first bearing face 21, or by a rivet 54 resulting from a deformation local of a lip 53 of the shaft 1, or by an irreversible immobilization of the shaft 1 on the hub 20 at a fastening zone.

This equipped balance 10 comprises a plateau pin 62 and a plateau notch 64, the plateau pin 62 being mounted on the hub 20 or on a plate socket 60 driven on a plateau range 6, and the plateau notch 64 being formed on the shaft 1 or on a plateau bush 60 driven on the plateau span 6.

Preferably, the shaft 1 comprises a lateral abutment surface 9 protruding axially, along the axis of pivoting D, with respect to the rivet 54 or to the fixing zone, for the reception axially of a plateau bushing a pendulum 60, or a large plate 61 that includes this sleeve 60 mounted with clamping on the tray span 6, so as to maintain the tray sleeve 60 away from a rocker 2 mounted on the main bearing 5 and maintained resting on the first lateral surface 81.

In a particular embodiment, the hub 20 is held by irreversible immobilization welded or brazed or glued on the shaft 1.

The invention also relates to a sprung-balance assembly 100 comprising such an equipped balance 10, comprising a plate pin 62 and a plate notch 64. It comprises, mounted with clamping on the shaft 1 and abutment abutment on the second lateral surface 82 or 68, a spiral shell 70 to which is attached at least one spiral spring 71.

The invention also relates to a watchmaking assortment 200 comprising such a pendulum-balance assembly 100, and comprising such a pendulum equipped 10 carrying a plateau pin 62 and a plateau notch 64, and further comprising an anchor 201 arranged to cooperate with the plate pin 62 and the plate notch 64. The anchor 201 is pivotally mounted about an anchor axis DA parallel to the pivot axis D of the shaft 1 and comprises horns 202 arranged to cooperate with the plateau pin 62 as close as possible to the main bearing surface 5, and a stinger 203 arranged to cooperate with the plate notch 64 at the furthest point from the main bearing surface 5.

Preferably, the anchor 201 comprises a rod 204, integral or not with its pivot 205 defining the anchor axis DA, the rod 204 carrying the stinger 203 in its alignment, and carrying a set of horns 202 reported in a plane substantially parallel to a plane defined by the rod 204 and the sting 203.

The invention also relates to a watch movement 300 comprising at least one such assortment 200; it comprises a plate 301 carrying a first anchor stone 306, and an anchor bridge 302 carrying a second anchor stone 307, between which stones 306, 307, is guided in pivoting the anchor 201. The plate 301 carries a first anti-shock balance guide 308, and the movement 300 comprises a balance bridge 303 carrying a second balance shock-preventing guide 309. Between these anti-shock guides 308, 309 is guided in pivoting the balance-sprung assembly 100, and the dart 203 is closer than the horns 202 of that of the anti-shock guide 308, 309, which is farthest from the spiral spring 71.

It is understood that the relative mounting of the dart and horns according to the invention, where the horns are mounted remotely, in a plane parallel to that of the fork which is carrying the dart, is the opposite of the usual assembly where the sting is reported parallel to the carrier fork of the horns in the same plane as this one.

The invention also relates to a timepiece 1000 comprising at least one such watch movement 300.

The provisions relating to the maintenance of the balance serge, by the basis thus arranged according to the figures 1 or 6 at 9 , or by the plateaus of Figures 2 to 4 , allow to reverse the fixing system and positioning of 180 ° compared to the prior art. Without changing the positioning of the bridges, it is thus possible to increase the safety, especially between the balance rod and the oscillating weight, without increasing the height of the movement. To achieve the goal of balancing the sharing and increasing safety, between the large plate and the anchor rod, between the ellipse and the dart, and between the dart and the plate, it is necessary to combine the reversal of the support of the pendulum on its tree, the relative reversal of the positions of the dart and the horns on the anchor. This combination alone makes it possible to keep the relative positions of the other components of the movement: bridges, oscillating weight, date disc, incablocs.

The invention provides an economical solution to the control of the height of the movement, while ensuring high values of safety and sharing, since it requires action on only two components: the balance shaft and the anchor.

The invention thus facilitates the production of ultra-flat movements, with components as rigid as in conventional movements, and without any risk during walking.

Claims (18)

Clock balance shaft (1) comprising, around a pivot axis (D): a main bearing surface (5; 65) for the radial centering of a rocker arm (2), and connected to said main bearing surface (5; 65), a first bearing surface (81; 66) extending substantially radially to receive in axial abutment a said pendulum (2), a plateau span (6) for the radial centering of a plateau bush (60), a ferrule bearing (7) for the radial centering of a spiral shroud (70), characterized in that said ferrule bearing (7) and said main bearing (5; 65) are at a distance from one another; and arranged so as to keep at a distance from each other a ferrule (70) mounted on said ferrule bearing (7) and a rocker (2) mounted on said main bearing (5; 65) and in that that said shaft (1) has a second lateral bearing surface (82; 68) for receiving in a spiral axial stop ferrule (70) mounted on said shell bearing (7), said second lateral bearing surface (82 68) being located, or at a plate (8) between said ferrule bearing (7) and said main bearing (5; 65), or at a radial shoulder of said shaft ( 1) beyond the projection of said main span (5; 65) on said pivot axis (D). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is in one piece and has a lateral abutment surface (9) for axially supported reception of a mounted balance plate bushing (60). on said tray span (6), so as to maintain said tray sleeve (60) away from a beam (2) mounted on said main bearing (5) and held in abutment on said first side surface (81). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is in two parts and comprises a plate sleeve (60) driven on said plateau surface (6) that comprises a straight axis (11) , said plate (60) having a first lateral bearing surface (66) constituting an abutment supporting a rocker (2) mounted on said main bearing (65) also comprises said tray sleeve (60). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is in two parts and comprises a tray sleeve (60) driven on said plateau surface (6) that comprises a stepped hub (110) , said plate (60) having a first lateral bearing surface (66) constituting a bearing abutment of a rocker (2) mounted on said main bearing (5) that comprises a flange (67) of said stepped hub (110). ). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is integral and comprises a shouldered hub (110) having a flange (61) having a first lateral bearing surface (66) constituting an abutment bearing a rocker (2) mounted on said main bearing (5) that also includes said flange (61). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is in two parts and comprises a plate (8) driven on a rectilinear bearing (113) that comprises a shouldered hub (110), between said main bearing (5) and said ferrule bearing (7), said plate (8) having a said first lateral bearing surface (81) and a said second lateral bearing surface (82), and in that said bearing rectilinear (113) comprises, from a first axial side (51) facing said tray span (6), a lip (53) of small section to form a rivet (54) for blocking a hub (20) d a said pendulum (2) mounted on said main span (5), and said shouldered hub (110) having a shoulder face (112) constituting an axial stop for a plateau bushing (60) mounted on said plateau span (6) that includes said stepped hub (110). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is in two parts and comprises a spacing sleeve (111) between said ferrule bearing (7) and said tray span (6) said spacing bushing (111) having a trim flange (8) having said main span (65) and said first lateral bearing surface (81), said spacer sleeve being driven to a rectilinear bearing (113) that comprises a rectilinear axis (11) between said main surface (5) and said shell surface (7), said plate (8) also comprising a said second lateral bearing surface (82), and said spacer sleeve (111) constituting an axial stop for a tray bushing (60) mounted on said tray span (6). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is in three parts and comprises, driven side by side on a rectilinear bearing (113) that comprises a rectilinear axis (11), a plate ( 8) having a said first lateral bearing surface (81) and a said second lateral bearing surface (82), and a spacer sleeve (111) carrying said main bearing surface (65), said spacer sleeve (111) providing an axial stop for a tray bushing (60) mounted on said tray span (6). Balance shaft (1) according to claim 1, characterized in that said shaft (1) is in three parts and comprises, intended to be driven on a rectilinear bearing (113) that comprises a rectilinear axis (11) of both sides. other of a rocker (2) mounted on said main bearing (5) of said rectilinear bearing (113), a plate (8) comprising a said first lateral bearing surface (81) and a said second lateral surface of support (82), and a spacer ring (208) constituting an axial stop for a tray bushing (60) mounted on said tray span (6) of said rectilinear bearing (113). Balance shaft (1) according to one of the preceding claims, characterized in that said tray centering surface (6) has a maximum diameter less than or equal to the minimum diameter of said main span (5), and in that it comprises a lateral abutment surface (9) of diametral size less than or equal to that of said main bearing (5), for receiving in abutment a balance roller (60) mounted on said tray surface (6 ). Clock balance shaft (1) (2), according to one of the preceding claims, characterized in that one of its components comprises a lip (53) of small section to form a rivet (54) for blocking a hub (20) of said pendulum (2) mounted on said main bearing (5; 65). Clock-equipped pendulum (10) comprising a bare rocker (2), a hub (20) of which is mounted on a shaft (1) according to one of claims 1 to 11, characterized in that said hub (20) is mounted by a bore (23) which it comprises on said main bearing surface (5), supported by a first bearing face (21) on said first lateral support surface (81) and held at a second face (22) opposed axially to said first bearing face (21), or by a rivet (54) resulting from a local deformation of a lip (53) of said shaft (1), or by immobilization irreversibly of said shaft (1) on said hub (20) at an attachment zone, said equipped balance beam (10) having a plateau pin (62) and a plateau notch (64), said plateau pin (62); ) being mounted on said hub (20) or on a tray bushing (60) driven on a said tray span (6), and said tray notch (64) being provided on said shaft (1) or on a tray sleeve (60) driven on said tray span (6). Equipped balance wheel (10) according to the preceding claim, characterized in that said shaft (1) comprises a lateral abutment surface (9) protruding axially, along said pivot axis (D), with respect to said rivet (54) or said fixing zone, for axially bearing receiving a pendulum bushing (60) mounted on said plateau span (6), so as to maintain said plateau bushing (60) away from a beam ( 2) mounted on said main surface (5) and held in abutment on said first side surface (81). Equipped balance (10) according to one of claims 12 or 13, characterized in that said hub (20) is held by an irreversible immobilization welded or brazed or bonded to said shaft (1). Spiral balance assembly (100) comprising a balanced rocker (10) according to one of claims 12 to 14 comprising a plateau pin (62) and a plateau notch (64), characterized in that it comprises, mounted with clamping on said shaft (1) and abutting abutment on said second lateral surface (82), a spiral shell (70) to which is attached at least one spiral spring (71) A watchmaking assortment (200) comprising a balance sprung assembly (100) according to the preceding claim, and comprising an anchor (201) arranged to cooperate with said plate pin (62) and said notch plate (64), characterized in that said anchor (201) is mounted to pivot about an anchor axis (DA) parallel to the pivot axis (D) of said shaft (1) and provided with horns (202) arranged to cooperate with said ankle tray (62) closest to said main bearing (5), and a stinger (203) arranged to cooperate with said tray notch (64) furthest from said main bearing (5), and in that said anchor ( 201) comprises a rod (204) whose pivot (205) defines said anchor axis (DA), said rod (204) carrying said stinger (203) in its alignment, and carrying a set of said horns (202) reported in a plane substantially parallel to a plane defined by said rod (204) and said dart (203). Timepiece movement (300) comprising at least one assortment (200) according to the preceding claim, characterized in that it comprises a plate (301) carrying a first anchor stone (306), and a bridge of anchor (302) carrying a second anchor stone (307), between which stones (306; 307) is guided in pivoting said anchor (201), said plate (301) carrying a first balance wheel anti-shock guide ( 308), and said movement (300) comprising a balance bridge (303) carrying a second balance shock-preventing guide (309), between which anti-shock guides (308; 309) is pivotally guided said balance-spiral assembly (100), and that said stinger (203) is closer than said horns (202) of said one of said shock-guiding members (308; 309) furthest from said springset (71). Timepiece (1000) comprising at least one watch movement (300) according to the preceding claim.

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