CH706404A2 - equipped shaft having a smooth shaft of watch balance wheel. - Google Patents

Abstract

The invention relates to an equipped shaft (1E) comprising a smooth shaft (11) of a clock balance. It comprises, driven on said shaft (11), a plate bushing (60) carrying a notch (64), and a spacing sleeve (111) having a first bearing surface (81) constituting an axial abutment. supporting a rocker to be mounted on a main bearing (65) cylindrical of said sleeve (111). The invention also relates to a pendulum equipped with a bare balance wheel having a hub (20) mounted on said main bearing surface (65), supported by a lateral surface on said first lateral surface (81), a rocker arm assembly. hairspring (100) comprising such a rocker equipped and mounted with clamping on said shaft (11) and in abutment abutment on a second lateral surface of the bearing (82) of said sleeve (111) turned on the opposite side to said first surface support (81), a spiral shell (70) to which a spiral spring is attached, as well as a watchmaking assortment comprising such a set and an anchor.

Description

FIELD OF THE INVENTION

The invention relates to an equipped shaft having a smooth shaft clockwork.

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

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

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

The invention also 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 to 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 a hub of its serge, and maintained in support on a face of a first side of a central plate that includes the shaft. On this first side, beyond the hub, a ferrule fitted on the shaft near a first end of this shaft constitutes the mobile attachment point of a spiral spring also attached to a plate or a bridge . On the second side of the shaft opposite to that carrying the ferrule, the balance shaft carries, moving away from the middle plate, first of all a large plateau carrying a plateau pin which cooperates with the fork of an anchor, then a small plate having a notch cooperating with a sting of the same anchor to prevent the accidental movements of the fork.

It is appropriate to sufficiently size the safeties in the transverse direction of 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.

On many movements, the anchor / pendulum shares are insufficient, which generates a risk of collision, and these shares are generally unbalanced.

It is understood that a too strong sizing of these securities 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 movement of components, to ensure safety, is not always easy, due to the presence of the various bridges, the balance rod, 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 safeties, in particular because of the necessary security between the balance rod and the oscillating mass, which is provided by position sidewalks frozen, and which prohibit axially moving the balance rod.

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

US 2010/157 743 in the name of ROGER DUBUIS describes a particular fastening method of spiral to the ferrule with pairing of a spring to a pendulum, and the mounting of the balance spring on the balance with a collar selected from a collection of collars corresponding to different distances of fixing of the inner turn relative to the axis. The balance therefore comprises a removable collar for fixing the hairspring. This balance has a middle plate, on either side of which are supported, on one side the balance wheel beyond which is driven a ferrule, and a second side a socket with the two plates and the ankle.

Document CH 270 582 A in the name of BRENDLER describes a conical balance shaft on which is fitted a first sleeve which carries, on a first side, a rocker resting on a first face of the first sleeve forming a first plate , and immobilized by a first rivet on the side of a first end of the shaft, the first rivur forming a second plate on which is supported a ferrule itself immobilized by a rivet at the first end of the first sleeve. The first bushing still carries, on a second side, a second bushing resting on a second face of the first bushing and carrier of the balance plates and immobilized by a rivet on the side of a second end of the first bushing and corresponding to a second end of the tree.

The document FR 1 216 100 A in the name of PIZON describes several executions of pendulums. In a first embodiment, a rocker has, on either side of a plate, a first side the rocker bearing on one side and immobilized by the shell driven on the shaft, and a second side a double tray mounted on a conical bearing of the shaft. The other embodiments comprise a bushing with a double monobloc plate with a plate carrying the balance bearing on a face of the plate on the opposite side to the plates, the shell is supported on one face of the sleeve without contact with the balance, and is mounted, as appropriate, directly on the sleeve or on a threaded shaft on which is mounted the sleeve.

The document CH 95 065 in the name of KOEHN describes a balance comprising, mounted on a smooth shaft single shoulder, a sleeve having, beyond the two plates, a bearing plate of the rocker immobilized by a rivet on the side opposite the trays, the ferrule being driven further on the sleeve.

The document CH 474�101 in the name of MADE BALANCIERS REUNIES described, fitted on a smooth shaft, a sleeve having a double plate, the large plate with the dowel also serving as a direct support to the balance, which is immobilized on the opposite side by the ferrule driven on the socket.

The document GB 831 161 in the name of SMITH describes a monobloc balance, with, on one side of the serge, the ankle and the notch, and on the other side of the serge, an eccentric ferrule.

The document DE 2 427 021 SA1 in the name of EBAUCHES BETTLACH describes a balance shaft having a bearing plate of the notch, the beam of the skewer is supported on one side of the plate and carries the peg, the pendulum is held by the shell hunted on the tree.

US 1,423,446 to NEEDY describes several executions of pendulums. In a first embodiment, a shaft having a conical bearing surface supports a first bushing on which the rocker is held in abutment on a face opposite to the ferrule which bears on this first bushing, the first bushing is held on the conical shaft. locally threaded by a nut in a recess of the first socket, and a second socket with double plate and ellipse is fitted on a bearing of the shaft beyond the first sleeve. The other embodiment comprises a ring screwed on the shaft under the first sleeve for its maintenance.

The document CH 700 260 A2 in the name of CARTIER describes a one-piece shaft having a central plate of a first side of which the beam of the rod is in support, and beyond, the shell is fitted on another scope , the plate forming a large platform carrying the ankle and the shaft comprising the small plate of the second side opposite the balance.

Summary of the invention

The invention proposes to improve the safety between a balance-spiral assembly equipped 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.

For a given movement height, the invention aims to balance the share of the exhaust, and increase the security between the various components, to eliminate the risk of collisions.

The desired solution takes the greatest account of the cost of production, and strives to touch the minimum number of components.

For this purpose, the invention relates to an equipped shaft having a smooth shaft of a clockwork, characterized in that it comprises a tray sleeve carrying at least one tray notch, said sleeve being driven on a range of said smooth shaft, and in that said equipped shaft comprises a spacing sleeve also driven on said bearing surface and having a first lateral bearing surface constituting an axial bearing abutment of a rocker to be mounted on a cylindrical main bearing that also includes said spacer sleeve.

The invention also relates to a pendulum clock equipped with a bare balance wheel whose hub is mounted on such a shaft equipped, characterized in that said hub is mounted by a bore that comprises on said main bearing, in supported by a lateral surface on said first lateral bearing surface.

The invention also relates to a sprung balance assembly comprising such a balance equipped with a plate pin and a plateau notch, characterized in that it comprises, mounted with clamping on said smooth shaft and abutment abutment on a second lateral bearing surface of said spacer sleeve, said second lateral bearing surface being turned on the opposite side to said first bearing surface, a spiral shell to which is attached at least one spiral spring, said sleeve spacing maintaining said hub and said ferrule at a distance from each other.

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, characterized in that said anchor is pivotally mounted around an anchor axis 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 at the furthest from said main span, and in that said anchor comprises a rod whose pivot defines said anchor axis, said rod carrying said dart in its alignment, and carrying a set of said horns reported in a substantially parallel plane to a plane defined by 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 bearing plate of 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 shock-absorbing balance guide, and said movement comprising a balance bridge carrying a second anti-shock balance guide, between which anti-shock bearings shocks is pivotally guided said sprung-balance assembly, and in that said dart is closer than said horns of said one of said shock-resistant guide which 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 platinum carrier of 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 shock-absorbing balance guide, and said movement comprising a balance bridge carrying a second anti-shock balance guide, between which anti-shock bearings shocks is pivotally guided said sprung-balance assembly, and in that said dart is closer than said horns of said one of said shock-resistant guide which is farthest from said spiral spring.

The invention further relates to a timepiece comprising at least one such clockwork movement.

Brief description of the drawings

Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the accompanying drawings, in which: <tb> fig. 1 <sep> represents, schematically, partially, and in section passing through the axis of pivoting of a rocker arm and by the axis of pivoting of an anchor with which this pendulum cooperates, a clockwork movement comprising a sprung balance assembly and an anchor escapement mechanism, with a first preferred embodiment of a pendulum according to the invention; <tb> fig. 2 <sep> shows, schematically, partially, and in section passing through its axis of pivoting, a second variant of balance according to the invention; <tb> fig. 3 <sep> shows, schematically, partially, and in section passing through its pivot axis, a third embodiment of the balance according to the invention; <tb> fig. 4 and FIG. 5 <sep> show, schematically, partially, and in section passing through its pivot axis, respectively a fourth tray variant reported in FIG. 4, and a fifth variant with a one-piece shaft with a plate integrated in FIG. 5; <tb> fig. 6 <sep> shows, schematically, partially, and in section passing through its pivot axis, a sixth variant of the balance according to the invention; <tb> fig. 7 <sep> shows, schematically, partially, and in section passing through its axis of pivoting, a seventh pendulum variant according to the invention; <tb> fig. 8 <sep> represents, schematically, partially, and in section passing through its pivot axis, an eighth armature variant according to the invention; <tb> fig. 9 <sep> represents, schematically, partially, and in section passing through its axis of pivoting, a ninth pendulum variant according to the invention; <tb> fig. <Sep> 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; <tb> fig. 11 <sep> shows, schematically, partially, and in section passing through its pivot axis, a ninth armature variant according to the invention.

Detailed Description of the Preferred Embodiments

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

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

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

Here called "shaft 1" the monolithic axial component guided by pivots at the plate and the bridge, which supports the other components of the sprung balance. According to its morphology, this tree 1 will take here the designations 11 (smooth) or 110 (floor).

Here is called "equipped shaft 1E" a subassembly, kit or preassembled, ready to receive a pendulum and a spiral shell, and comprising at least: such a shaft 1, and a sleeve 60 carrying at least one notch tray 64. In some variants, as shown in Figs. 6 to 9, the equipped shaft 1E further comprises components which are to be assembled together with the balance and the spiral shell: trim plate 89, spacer sleeve 111, spacer ring 208, the function of which will be explained further.

A "equipped balance 10" is a shaft equipped 1E on which is assembled a bare beam 2.

A "pendulum-balance assembly 100" is a set composed of a balance equipped with 10 and at least one spiral 7.

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 sleeve 60. This plateau sleeve 60 here means a sleeve carrying at least one plateau notch, a ferrule bearing 7 for the radial centering of a spiral shell 70.

According to the invention, the ferrule scope 7 and the main surface 5 or 65 are spaced apart from each other, and arranged to maintain at a distance from one another a ferrule 70 mounted on the bearing surface 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 to receive in axial abutment a spiral shell 70 mounted on the scope of 7. This second lateral bearing surface 82 or 68 is located, or at a plate 8 located between the ferrule bearing 7 and the main bearing 5 or 65, or at a radial shoulder that has the shaft 1 beyond the projection of the main bearing 5 or 65, on the axis D.

The various variants comprise a main bearing surface of the balance, referenced main scope 5 in FIGS. 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 in FIGS. 2, 3, 8 and 9 where this main surface is provided on a component attached to this axis 11 or hub 110, this reported component being a plate bush 60 in FIGS. 2 and 3, or a spacer sleeve 111 in FIGS. 8 and 9. In either case, this main surface serves 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 surface of support. This first lateral bearing surface is referenced 81 in FIG. 1and in figs. 6 to 9, where it is constituted by a side surface of a trim plate 89 or a spacer sleeve 111. This first lateral bearing surface is referenced 66 in FIGS. 2 to 5. In either case, this first lateral bearing surface extends substantially radially, preferably radially perpendicularly to the axis D of the shaft 1, to receive the hub 20 in axial abutment. of a pendulum 2.

In all the variants illustrated here, the balance shaft 1 is carrying spacer means, constituted either by a shoulder of an axis 11 or a shouldered hub 110 constituting the heart of this shaft 1, either by a component attached thereto, such as plate 8, trim plate 89, spacer sleeve 111, spacer ring 208, or insert plate bushing 60. These spacing means make it possible to avoid the support Directly of the ferrule 70 on the balance rod as in conventional configurations.

The shaft 1 comprises a second lateral bearing surface for receiving in axial abutment a spiral shell 70 mounted on the bearing surface 7. This second bearing surface is referenced 82 in FIG. 1and in figs. 6 to 9, where it constitutes the lateral surface of the trim plate 89 opposite the first lateral bearing surface 81. The second lateral bearing surface is referenced 68 in FIGS. 2 to 5, where it is constituted, in FIGS. 2 and 3 by an end surface of a tray bushing 60 driven on a straight axis 11, and in FIGS. 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 bring the hub of the balance wheel and the plate together, by eliminating, in this zone, the traditional attitude between the serge and the plate, and to bring them as close as possible to one of the other, while ensuring the required security. The pure and simple removal of the plate is possible, but is not mandatory to fulfill the purpose of the invention. Indeed, the support surface function, traditionally assigned to the plate between hub and plate of the prior art, can be filled by other components as seen on the different variants.

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

The variant of FIG. 1reverses the usual system for positioning and fixing the balance of the prior art, at 180 °. This reversal allows, in particular, to gain height between the small and large plateau. The plate 8 is transferred to the other side of the balance, that is to say is interposed between the hub 20 of the shank of the balance 2 and the ferrule 70 for fixing the spiral 71. The plate 8 serves as support, on one side to the shell 70, and the opposite side to the hub 20. The plate 8 is the largest diameter of the shaft 1.

FIG. 1 thus illustrates a first mode with a shaft 1 which comprises a shouldered hub 110, which incorporates a flange 119 carrying the plate 8.

On the side of the hub 20, one of the side surfaces of this plate 8 constitutes a first lateral bearing surface 81 for axial abutment support hub 20 driven on a main surface 5 of the shoulder hub 110. This main scope 5 is immediately adjacent to this plate 8, and carried with it by the collar 119.

On the side of the shaft 1 carrying the ferrule 70, the plate 8 comprises a radial shoulder defining a second lateral surface 82, to receive in axial abutment this ferrule 70 mounted on a bearing surface 7 that includes the shaft 1.

The shouldered hub 110 further comprises, in the immediate vicinity of the first radial shoulder 51, a lateral abutment surface 9 for the axial bearing reception of an attached balance plate sleeve 60, mounted on the plateau surface 6: the carrier side of the hub 20, away from the plate 8, the main support surface 5 of the hub 20 is interrupted by a first radial shoulder, defining a first axial side 51, in the vicinity of which a lateral abutment surface 9 is arranged to serve as a bearing face to a plateau bushing 60 carrying at least one tray notch 64. La is preferably immobilized by a rivet 53 folded into position 54 after fitting, as shown in FIG. 1. This rivet is set back from the lateral abutment surface 9, so as to ensure the support of the plate bush 60 on the lateral abutment surface 9 and not on the rivet, and thus to ensure accurate dimensions at the interface with the anchor. Beyond the lateral abutment surface 9, a smooth bearing surface 6 of the shaft 1 supports the plateau sleeve 60, containing a large plateau 61, a small plateau 63, the plateau notch 64 in the small plateau 63, and the pin 62 mounted in the large plate 61 in a particular variant.

Thus the lateral abutment surface 9 maintains the tray bushing 60 away from the hub 20 mounted on the main surface 5 and maintained in abutment on the first side surface 81, and prevents any contact between the tray sleeve 60 and this 2. In this variant of FIG. 1, the plate 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 other variants illustrated in FIGS. 7 to 9.

In sum, in FIG. 1, the shaft 1 is a shoulder hub 110, which comprises at its two ends, near pivots, a bearing surface 6, which is connected to a first radial shoulder 51, and a ferrule bearing 7, which is connected at a second lateral surface 82. This first radial shoulder 51 and this second lateral surface 82 together define a flange 119, which itself comprises a rocker surface 5 which is connected to a first lateral bearing surface 81 for support of the pendulum 2.

According to the invention, the first lateral bearing surface 81 is turned on the same side as the first radial shoulder 51. And the bearing surface 5 of the rocker 2 is separated from the ferrule bearing surface 7 by a peripheral portion forming a plate 8 which constitutes the largest diameter of the flange 119, and therefore of the shaft 1. This outer diameter of the plate 8 is also preferably greater than the outside diameter of the ferrule 70.

The main bearing surface 5 of the rocker arm is of smaller diameter than that of this plate 8, and is of diameter greater than the diameters of the bearing surface 6 of the plate, and of the ferrule bearing 7.

The collar 119 axially positions the balance 2 and the ferrule 70.

The plate 8 is unique.

The rocker stop is therefore on the opposite side to the plateau range 6 and trays 61 and 63.

In a variant not shown, the pin 62 is fixed to the balance 2, instead of being fixed on the sleeve 60. This embodiment is applicable to all of the illustrated variants.

In another embodiment not shown, the sleeve 60 and the rocker 20 form a monoblock component. This embodiment is applicable to the variants of FIGS. 1 to 4.

In FIGS. 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 fig. 2 and 3, on a shouldered hub 110 in FIG. 4. In the variant of FIG. 5, the plateau sleeve, or at least the small plate 63, is integrated with such a stepped hub 110 which carries the hub 20 directly.

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

In FIG. 2, as in fig. 3, the support plate of the balance is included in the sleeve 60 carrying the double plate, the rocker is fixed relative to this sleeve 60. The shaft 1 is in two parts and comprises a tray bushing 60 driven on the platform bearing 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 surface 65 that also includes the plateau bushing 60. end surface 68 of the double plate of the sleeve 60 serves to axially support the ferrule 70.

The embodiment of FIG. 3, with the pin 62 in the balance 20, is even more advantageous than FIG. 2, because it allows to gain height and to have a very compact balance-hairspring assembly in the axial direction.

In FIG. 4, the shaft 1 is in two parts and comprises a plate bush 60 driven on the tray surface 6 that comprises a shouldered hub 110, the plate 60 having a first lateral bearing surface 66 constituting a bearing abutment a rocker 2 mounted on the main surface 5 that comprises a flange 67 of the hub shouldered 110. The sleeve 60 is an integral part of the axis of the rocker, the support and attachment are directly on the shaft 110, the large plate 61 is no longer used to carry the pin 62 which is directly carried by the rocker 20, therefore this bearing 61 may be of smaller diameter, since it constitutes only a simple axial support of the balance.

The variant of FIG. It is distinguished from that of fig. 1, in that it has no attitude on the side of the shell 70, and 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 which also includes the collar 61. Preferably, to facilitate assembly, the tray centering span 6 has a maximum diameter less than or equal to the minimum diameter of the main span 5 or 65.

In the embodiment of FIGS. 2 to 4, a tray bushing 60 is driven on the tray span 6, and has at least the first bearing side surface 66 connected to the main span. This main scope is constituted, or in FIG. 4a main bearing 5 that includes a flange 67 protruding radially from the axis 11 as, or in FIGS. 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 integral and has a lateral abutment surface 9 for receiving in axial support a pendulum plate sleeve 60 mounted on the tray surface 6, so as to maintain the tray sleeve 60 remote from a rocker 2 mounted on the main surface 5 and held in abutment on the first side surface 81.

Thus, in the first embodiment of Figure 1, the shaft 1 is a shouldered hub 110 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 size less than or equal to that of the main surface 5, for the reception in support of a balance plate socket 60 mounted on the tray span 6. Preferably, this shaft 1 includes: 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.

Advantageously and peculiar 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 surface 5 comprises, a first axial side 51 facing the tray span 6, a lip 53 of small section to constitute, by riveting or riveting or the like, a riveting 54 blocking a hub 20 of a rocker 2 mounted on the main bearing 5 abuts against the first side surface 81. FIG. 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 carrier component of the main bearing, by laser welding, by brazing, by bonding, by local deformation of the shaft or the main bearing bearing component, these methods being in no way limiting.

In the variants of FIGS. 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 surface 6 that comprises an axis 11.

In the case of FIG. 4, the hub 20 which carries the so-called plateau pin 62. The plateau bushing 60, which is attached to the axis 11, is arranged to form a bearing abutment of a rocker 2 mounted in radial support on the span main 5 of the axis 11, and maintained in axial support on a bearing surface 66 of a collar 61 of the plateau bushing 60, similar to the usual large plateau, but not carrying the plateau pin.

In FIGS. 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 plate bushing 60. This collar 61, in FIG. 2 constitutes the usual large plate bearing the pin 62. On the other hand, in FIG. 3, the flange does not constitute the usual large plate carrying the so-called plateau pin 62, since, similarly to the variant of FIG. 4, it is also the hub 20 which carries this pin 62 in this variant.

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

In the embodiments of FIGS. 1 and 2, the plate bushing 60 comprises a large plate 61 which carries a plate pin 62, and is integral with a small plate 63 having a plate notch 64 and further than it from the main bearing, referenced 5 in fig. 1, 65 in FIG. 2.

In the embodiments of FIGS. 3 and 4, the hub 20 of the rocker 2 is carrying a so-called 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 comprising a notch plate 64 and farther than him from the main span 5, 65.

In FIG. 6, the shaft 1 is in two parts and has a flat plate 89 driven on a rectilinear range 113 that comprises a shouldered hub 110, between the main surface 5 and the bearing surface 7, the trim plate 89 having a first surface lateral bearing surface 81 and a second lateral bearing surface 82, and the straight bearing surface 113 comprises, on a first axial side 51 facing the plate bearing surface 6, a lip 53 of small section to form a rivet 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 stop for a plateau bushing 60 mounted on the plateau surface 6 that the hub comprises. shouldered 110.

The variant of FIG. 6comporte an trim plate 89 driven on a shouldered hub 110. The spiral shell 70 is also driven on the shouldered hub 110, axially supported on the plate reported 89 which itself bears on the balance hub 20. This hub 20 is held on the opposite side by a rivet 54, as in the version of FIG. 1. An insert plate 60 insert, having a large plate 61 and a small plate 63 usual, is driven on the shouldered hub 110, bearing on a shoulder face 112.

In FIG. 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 trim plate 89 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 plateau bushing 60 mounted on the tray span 6 of the straight reach 113.

The variant of FIG. 7concerns a shaft 1 having a rectilinear smooth axis 11, on which are driven the ferrule 70, in axial bearing on the trim plate 89, itself in axial bearing on the hub 20, in axial support on a spacer ring 208 with an insert 60 insert socket, having a large tray 61 and a small tray 63 usual, bearing the tray pin 62 and the notch 64.

In FIG. 8, the shaft 1 is in two parts and has a spacing sleeve 111 between the ferrule bearing surface 7 and the bearing surface 6, the spacing sleeve 111 having a flange bearing plate and having the main bearing 65 and the first lateral bearing surface 81, the spacer bushing being driven over a rectilinear bearing surface 113 which comprises a rectilinear axis 11 between the main bearing surface 5 and the bearing surface 7, this trim plate 89 still having a second surface lateral support 82, and the spacer sleeve 111 constituting an axial stop for a plateau bushing 60 mounted on the plateau span 6.

The variant of FIG. 8concerne a shaft 1 having a rectilinear smooth axis 11, on which are driven the ferrule 70, in axial support on a spacing sleeve 111. This spacing sleeve 111 comprises, under a flange forming a plate, the main span 65 d ' radial support of the hub 20, and a first lateral bearing surface 81 for axial bearing of the hub 20, on the opposite side to the shell 70. The sleeve 111 is axially supported on an insert plate socket 60, having a large tray 61 and a small tray 63 usual, carrying the plate pin 62 and the notch 64.

An advantageous variant of FIG. 8intention to fix the pin 62 on the balance 20, which saves the large plate 61, and to gain height axially, the spacing sleeve 111 then directly bearing on a socket 60 limited to the small plate 63 provided with notch 64.

In this embodiment of FIG. 8, the invention thus relates to an equipped shaft 1E comprising a smooth shaft 11 of a watch wheel, characterized in that it comprises a plateau bushing 60 carrying at least one plateau notch 64, this bushing 60 being driven on a bearing 6 of the smooth shaft 11, and in that the equipped shaft 1E comprises a spacer sleeve 111 also driven on the bearing surface 6 and having a first lateral bearing surface 81 constituting an axial bearing abutment of a rocker 2 to be mounted on a cylindrical main surface 65 which also comprises the spacer sleeve 111. In a variant illustrated in FIG. 8, the sleeve 60 comprises a plateau pin 62.

In this embodiment of FIG. 8, the invention also relates to a pendulum equipped with a watchmaker 2 including a rocker 2 having a hub 20 is mounted on the shaft equipped 1E, and the hub 20 is mounted by a bore 23 that it has on the main span 65 supported by a lateral surface on the first lateral bearing surface 81.

The spacing sleeve 111 is mounted abutting abutment on the sleeve 60. In a particular variant, not shown, the so-called plate pin 62 is mounted on the hub 20.

In this embodiment of FIG. 8, the invention further relates to a sprung-balance assembly 100 comprising such an equipped balance 10 comprising a plate pin 62 and a plate notch 64. This balance-sprung assembly 100 comprises, mounted with clamping on the smooth shaft 11 and in abutment abutment on a second lateral bearing surface 82 of the spacer sleeve 111, the second lateral bearing surface 82 being turned away from the first bearing surface 81, a spiral shell 70 to which is attached at least one spiral spring 71, the spacer sleeve 111 holding the hub 20 and the ferrule 70 away from each other.

In FIG. 9, the shaft 1 is in three parts and comprises, driven side by side on a rectilinear bearing surface 113 which comprises a rectilinear axis 11, an attached plate 89 having a first lateral bearing surface 81 and a second lateral bearing surface 82, and a spacer sleeve 111 carrying the main span 65, the spacer sleeve 111 constituting an axial stop for a plateau sleeve 60 mounted on the plateau span 6.

The variant of FIG. 9concerne a shaft 1 having a rectilinear smooth axis 11, on which are driven the ferrule 70, in axial support on a plate reported 89, itself in axial support on a spacer sleeve 111.

The trim plate 89 has the first lateral bearing surface 81 for 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 in axial support on a reported plateau bushing 60, comprising a large plate 61 and a small plate 63 usual, carrying the plateau pin 62 and the notch 64.

The variant of FIG. 11illustrates a version close to that of fig. 1, but where the sleeve 60 is incorporated in the shaft itself. Only the notch 64 remains. The one-piece shaft 110 comprises a flange 119, which has a cylindrical bearing surface 65 for housing the hub 20, connected to a first lateral bearing surface 81 of the hub, and which faces the notch 64 formed at the foot of the shaft 110. The other face of the flange 119 has a second lateral surface 82 for the axial support of the shell 70, centered on a cylindrical surface 7 of the shaft 110. The hub 20 carries the ankle 62, which cooperates with the horns 202 of the reverse anchor, while the stinger 203 cooperates with the notch 64.

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

Naturally, the various variants illustrated lend themselves to a maintenance of the hub 20 by rivet, by local deformation of a plate bushing 60, or a flange 67, or a shoulder hub 110, or a spacing sleeve 111, this immobilization mode being shown only in FIGS. 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 further relates to FIG. 1, an equipped shaft 1E comprising such a shaft 1, and which comprises a plateau bushing 60 carrying at least one plateau notch and intended to be driven on the plateau surface 6 that comprises the shoulder hub 110, this plate 60 having a first lateral bearing surface 66 constituting a bearing abutment of a rocker 2 to be mounted on the main bearing surface 5 that comprises the collar 119 of the shouldered hub 110.

The invention further relates to FIG. 1, a pendulum equipped with clockwork comprising a bare balance 2 of which a hub 20 is mounted on such a shaft equipped 1E. The hub 20 is mounted by a bore 23 which it has on the main bearing surface 5, supported by a first bearing face 21 on the first lateral bearing surface 81 and held at a second opposite face 22. axially to the first bearing face 21, or by a rivet 54 resulting from a local deformation of a lip 53 of the shaft 1, or by an irreversible immobilization of the shaft 1 on the hub 20 at the level of a fixing area. This equipped balance 10 comprises a plateau pin 62 and at least one plateau notch 64, the plateau pin 62 being mounted on the hub 20 or on a plateau bushing 60 carrying at least one plateau notch 64 and driven on the 6. And the sleeve 60 is mounted after the imprisonment of the rocker 2 between the first lateral bearing surface 81 and the rivet 24 or the attachment zone.

The invention also relates to a pendulum equipped with a watch wheel clock 2 having a hub 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 bearing 5, supported by a first bearing surface 21 on the first lateral bearing surface 81 of the plate 8. In the preferred embodiment of FIG. 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 local deformation of a lip 53 of the shaft 1, or by an irreversible immobilization of the shaft 1 on the hub 20 at a fixing zone.

This equipped balance 10 comprises a plateau pin 62 and a plateau notch 64, the plate pin 62 being mounted on the hub 20 or on a plateau bushing 60 driven on a range of plate 6, and the notch plate 64 being formed on the shaft 1 or on a plateau sleeve 60 driven on the tray 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 supported by a balance plate socket 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 scope 5 and maintained in abutment on the first lateral surface 81.

In a particular embodiment, the hub 20 is held by an irreversible immobilization welded or soldered or bonded to the shaft 1.

The invention also relates to a sprung-balance assembly 100 comprising such a fitted balance 10, comprising a plateau pin 62 and a plateau 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 with 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 plate 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 being a carrier of the stinger 203 in its alignment, and carrying a game 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 fork carrying 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 rod, by the plate thus arranged according to FIGS. 1 or 6 to 9, or by the trays of FIGS. 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 sharings and increasing the safety, between the large plate and the anchor rod, between the ankle and the dart, and between the dart and the plate, it is necessary to combine with the reversal of the the support of the balance 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 security and sharing, since it requires an action on two components only: the balance shaft and the anchor.

The invention has the advantage of constituting an interchangeable solution set, that is to say that the new anchor, reversed from its usual position, and the pendulum according to the invention can be mounted in a movement that we propose to improve, without modifying other components. This notion of interchangeability is economically very important.

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 (9)

1. Equipped shaft (1E) having a smooth shaft (11) clockwork, characterized in that it comprises a tray sleeve (60) carrying at least one tray notch (64), said sleeve (60) being driven on a bearing surface (6) of said smooth shaft (11), and in that said equipped shaft (1E) comprises a spacer sleeve (111) also driven on said bearing surface (6) and having a first lateral surface of support (81) constituting an axial bearing abutment of a rocker (2) to be mounted on a main bearing (65) cylindrical that also comprises said spacer sleeve (111). 2. equipped shaft (1E) according to claim 1, characterized in that said sleeve (60) comprises a plate pin (62). 3. Equipped pendulum (10) with a balancer (2) having a hub (20) mounted on a shaft (1E) according to claim 1 or 2, characterized in that said hub (20) is mounted by a bore (23) which it comprises on said main bearing (65), supported by a lateral surface on said first lateral bearing surface (81). 4. Clock equipped balance (10) according to claim 3, characterized in that said spacer sleeve (111) is mounted abutment abutment on said sleeve (60). 5. Equipped balance wheel (10) according to claim 3 or 4 and comprising a shaft equipped (1E) according to claim 1, characterized in that said plate pin (62) is mounted on said hub (20). 6. sprung balance assembly (100) comprising a balanced beam (10) according to one of claims 3 to 5 comprising a plateau pin (62) and a plateau notch (64), characterized in that it comprises, mounted with clamping on said smooth shaft (11) and abutting abutment on a second lateral bearing surface (82) of said spacer sleeve (111), said second lateral bearing surface (82) being turned towards the opposed to said first bearing surface (81), a spiral shell (70) to which is attached at least one spiral spring (71), said spacer sleeve (111) holding said hub (20) and said ferrule ( 70) at a distance from each other. 7. Assortment of timepieces (200) comprising a sprung balance 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 pivotally mounted about an anchor axis (DA) parallel to the pivot axis (D) of said shaft (1) and comprises horns (202) arranged to cooperate with said a plateau pin (62) nearest said main span (5), and a stinger (203) arranged to cooperate with said plateau notch (64) furthest from said main span (5), and in that said anchor (201) comprises a rod (204) whose pivot (205) defines said anchor axis (DA), said rod (204) carrying said dart (203) in its alignment, and carrying a set of said horns (202) attached in a plane substantially parallel to a plane defined by said rod (204) and said dart (203). 8. Watch 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 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 anti-shock guide of balance wheel (308), and said movement (300) comprising a balance bridge (303) bearing a second balance shock-preventing guide (309), between which anti-shock guides (308; 309) is pivotally guided said pendulum assembly -spiral (100), and in that said dart (203) is closer than said horns (202) of said one of said shock-guiding (308; 309) which is furthest from said spiral spring (71). 9. Timepiece (1000) comprising at least one watch movement (300) according to the preceding claim.