CN215679056U

CN215679056U - Automatic winding mechanism of watch and watch

Info

Publication number: CN215679056U
Application number: CN202122162698.5U
Authority: CN
Inventors: V·勒诺亚; B·蒙菲雷尔
Original assignee: Blancpain SA
Current assignee: Blancpain SA
Priority date: 2020-09-08
Filing date: 2021-09-08
Publication date: 2022-01-28
Anticipated expiration: 2031-09-08
Also published as: EP3964896A1; DE202021104836U1

Abstract

The utility model relates to an automatic winding mechanism (100) for a watch, comprising a top (1), the pendulum comprises a gear ring (2) for driving an energy storage device (20) and an inertial mass (4) having an eccentric imbalance, the automatic winding mechanism (100) comprises a rotation guide device for guiding the rotation of the pendulum (1), the rotation guide means comprise first guide means fixed to the structure of the watch and second guide means carried by the balance (1), the pendulum (1) comprises components that are different from each other, are at least two-by-two stacked, are at least two-by-two and are particularly fastened to each other in a connected manner, the components are at least one ring gear (2), at least one inertial mass (4), at least one movable rolling ring (6) constituting the second guide means, and in one variant at least one flange plate (7) for covering. The utility model also relates to a watch comprising such an automatic winding mechanism.

Description

Automatic winding mechanism of watch and watch

Technical Field

The utility model relates to an automatic winding mechanism for a watch, comprising at least one mass pivotally mounted about a mass axis, said at least one mass comprising at least one toothed ring (toothed ring) with teeth and intended to drive an energy storage device included in said mechanism or arranged to cooperate with said energy storage device, said mechanism further comprising at least one inertial mass (inertial body) with a non-zero degree of unbalance with respect to said mass axis, said mechanism further comprising guide means for guiding the rotation of each of said masses, said guide means comprising first guide means arranged to be fixed to a watch structure and second guide means supported by said at least one mass.

The utility model also relates to a watch comprising at least one energy storage device arranged to cooperate with such an automatic winding mechanism.

The present invention relates to the field of automatic winding mechanisms for watches.

Background

In watches with automatic winding mechanism and comprising a movable top, it is generally difficult to assemble the peripheral mass to the movement in a simple manner, without operating with the aid of auxiliary components that may cause a risk of damage during boxing. Such assembly requires special machining operations such as tapping in gold or hard metal, milling of the ring gear, and mounting operations such as pre-assembling the pin at the inherent component of the rolling element without the pre-assembled pin.

SUMMERY OF THE UTILITY MODEL

The present invention relates to an automatic winding mechanism with a strong winding (winding) capacity.

The utility model proposes, in particular, to mount a peripheral pendulum on a robot core in a simple manner without requiring handling of components which are at risk of being damaged during mounting (boxing).

The utility model also aims to simplify the manufacture and to facilitate the integration of display elements, appearances, or identification marks, such as decorations, which are modular from an aesthetic point of view and, if necessary, are decoratable, in order to conveniently personalize the watch.

To this end, the utility model relates to an automatic winding mechanism for a watch. The automatic winding mechanism comprises at least one pendulum pivotally mounted relative to a plate about a pendulum axis, said at least one pendulum comprising at least one toothed ring having teeth and arranged to drive an energy storage device comprised in said automatic winding mechanism or arranged to cooperate with the energy storage device, said at least one pendulum further comprising at least one inertial mass having a non-zero degree of unbalance relative to said pendulum axis, said automatic winding mechanism comprising a rotation guide device for guiding the rotation of each pendulum, said rotation guide device comprising a first guide device arranged to be fixed to the structure of a watch and a second guide device supported by said at least one pendulum, wherein said at least one pendulum comprises a plurality of arms, different from each other, At least two components stacked one on top of the other and fixed in a coupled manner (jointly, integrally) at least two by means of the fixing elements comprised by the at least one mass, the components comprising the at least one ring gear, the at least one inertial mass, at least one movable rolling ring (race ring) constituting the second guide means.

Drawings

Other features and advantages of the present invention will become apparent from the following description, which proceeds with reference to the accompanying drawings. In the drawings:

figure 1 shows, in a schematic way and in plan view, an automatic winding mechanism according to the utility model for loading a barrel through an inverter;

figure 2 shows, in a schematic way and in a perspective view, an automatic winding mechanism according to the utility model, with a peripheral annular pivoting pendulum comprising, visible from the upper surface, a superposed annular flange, a ring gear, an inertial mass defining a sector angle, and a rolling ring;

fig. 3 shows, in a similar manner to fig. 1, a variant in which the ring gear is concealed by a flange;

fig. 4 shows, in a schematic way and in an exploded perspective view, the pendulum shown in the automatic winding mechanism of fig. 2;

fig. 5 shows, in a schematic way and in a cross-sectional view, a first variant of the assembly of the mass according to the utility model;

fig. 6 shows said first variant in a schematic way and in a top view;

figure 7 shows said first variant in a schematic way and in a bottom view;

figures 8-10 show the same first variant in a schematic way and in cross-section along different cross-sectional planes;

figure 11 shows a second variant of the utility model in a schematic way and in a top view;

figure 12 shows this second variant in a schematic way and in a bottom view;

figures 13-14 show, in a schematic way and in section along different sectional planes, the same second variant;

figure 15 shows, in a schematic way and in a top view, a third variant of the utility model;

figure 16 shows this third variant in a schematic way and in a bottom view;

figures 17-19 show the same third variant in a schematic way and in cross-section along different cross-sectional planes;

figure 20 shows, in a schematic way and in a top view, a fourth variant of the utility model;

figure 21 shows this fourth variant in a schematic way and in a bottom view;

figures 22-24 show, in a schematic way and in section along different sectional planes, the same fourth variant;

figure 25 shows, in a schematic way and in a top view, a fifth variant of the utility model;

fig. 26 shows this fifth variant in a schematic way and in a bottom view;

fig. 27-31 show the same fifth variant in schematic and in cross-sectional view of the different cross-sectional planes AA, BB, CC, DD and EE shown in fig. 26;

fig. 32 shows, in a schematic way and in a top view, a sixth variant of the utility model;

fig. 33 shows this sixth variant in a schematic way and in a bottom view;

figure 34 shows this sixth variant in a schematic way and in a cross-sectional view;

fig. 35 shows, in a schematic way and in a top view, a seventh variant of the utility model;

fig. 36 shows this seventh variant in a schematic way and in a bottom view;

figure 37 shows this seventh variant in a schematic way and in a cross-sectional view;

fig. 38 is a block diagram representing a watch with an energy storage device cooperating with such an automatic winding mechanism.

Detailed Description

The utility model relates to an automatic winding mechanism 100 of a watch, comprising at least one mass 1 mounted so as to pivot about a mass axis D with respect to a plate comprising said automatic winding mechanism 100 or comprising a timepiece movement. More specifically, the mass 1 is an annular or substantially annular peripheral mass which allows the central portion to be released to accommodate the timepiece movement and/or some complexity.

The at least one mass 1 comprises at least one ring gear 2 with teeth 3, which is arranged to drive an energy storage device 20, which is included in the mechanism 100, or the mechanism 100 is arranged to cooperate with the energy storage device. The mass 1 also comprises at least one inertial mass 4 having a non-zero degree of unbalance with respect to the axis D of the gyroscope, i.e. an eccentric center of inertia.

The mechanism 100 comprises rotation guide means arranged to guide each of the turrets 1 in rotation and comprising first guide means arranged to be fixed to a structure of the watch and second guide means supported by said at least one turrets 1.

According to the utility model, at least one of the gyroscopes 1 comprises components that are different from each other (different from each other), are stacked at least two by two, and are fixed at least two by means of the fixing elements 8 that the gyroscope 1 comprises, and in particular are linked to each other (each other), said components being at least one gear ring 2, at least one inertial mass 4, and at least one movable rolling ring 6 that forms the second guiding means.

In particular, the at least one mass 1 comprises components that are different from each other, are stacked at least two by two, and are fixed at least two by means of fixing elements 8, such as screws 9, and in particular are joined to each other, said components being at least one ring gear 2, at least one inertial mass 4, and at least one movable rolling ring 6 forming a second guiding device.

In one variant, the at least one mass 1 comprises components that are different from each other, are stacked at least two by two, and are fixed at least two by a fixing element 8, in particular are connected to each other, said components being at least one ring gear 2, at least one inertial mass 4, at least one movable rolling ring 6 forming a second guide, and at least one flange 7 for covering.

Said fixing element 8, for example a screw 9 or also a pin 21 or the like, is provided for the coupling between all or part of said components.

In particular, the at least one ring gear 2, the at least one inertial mass 4 and the at least one movable rolling ring 6 are at least partially superposed on one another.

In particular, the at least one ring gear 2, the at least one inertial mass 4, the at least one mobile rolling ring 6 and the at least one flange 7 are at least partially superposed on one another.

In particular, at least three of these components, having different characteristics, are at least partially superimposed on one another along the direction of the gyroscopic axis D. In particular, at least four of these components, having different characteristics, are at least partially superimposed on one another along the direction of the gyroscopic axis D.

In particular, the fixing element 8 is arranged to join all the components together.

The utility model is more particularly shown, in a non-limiting manner, by seven specific variants.

In a particular embodiment, the at least one ring gear 2, the at least one inertial mass 4, the at least one mobile rolling ring 6 and the at least one flange 7 are superposed on one another.

In particular, the at least one ring gear 2, the at least one inertial mass 4, the at least one mobile rolling ring 6 and the at least one flange 7 are fixed at least two by two and in particular joined to each other by means of fixing elements 8 included in the pendulum mass 1.

In particular, at least one ring gear 2 and at least one movable rolling ring 6 constitute the upper and lower surfaces of the at least one mass 1 and enclose the other components comprised by the mass 1.

In particular, the at least one flange 7 and the at least one mobile rolling ring 6 form the upper and lower surfaces of the mass 1 and enclose the other components of which the mass 1 comprises.

In particular, the fixing element 8 comprises a screw 9, the head 91 of which cooperates in a loss-proof manner with the ring gear 2 or with the rolling ring 6, respectively, the thread 95 of which cooperates with a

thread

605 or 705 which the movable rolling ring 6 or ring gear 2 comprises, respectively.

In particular, the fixing element 8 comprises a screw 9, wherein the head 91 cooperates as a fixed bearing with the flange 7 or the rolling ring 6, respectively, and the thread 95 cooperates with an

aperture

605 or 705 comprised by the movable bearing ring 6 or the respective flange 7.

In particular, the flange plate 7 comprises tongues 71 housed in channels comprised by said at least one ring gear 2, and/or by said at least one inertial mass 4, and/or by said at least one mobile rolling ring 6, these tongues 71 being arranged to cooperate with the fixing element 8 to ensure an integral joint assembly of the constituent parts of the mass 1. In particular, the tongue 71 is threaded so as to receive the screw 9.

Fig. 9 shows a modification in which the ring gear 2 includes the pin 21, and the flange portion 63 formed on the outer portion of the movable rolling ring 6 has a guide hole 79 in the flange plate 7.

Fig. 10 shows another variant in which the inertial mass 4 carries a further pin 210 housed in the guide hole 69 of the flange portion 63 formed on the outer portion of the mobile rolling ring 6.

In particular, the flange plate 7 is arranged to be visible to a user of the watch. The flange plate 7 can be made of any material, which allows a wide range of possible decorations, by means of indication decoration, engraving, glazing, embedding or other methods, in the preferred case of the flange plate 7 being visible to the user. The cover makes it possible to conceal the rest of the mechanism if desired. Thus, fig. 2 shows a mechanism in which the ring gear 2 is visible to the user, while fig. 3 shows a variant in which the flange plate 7 covers the teeth 3 of the ring gear 2.

In a variant, the ring gear 2 is arranged so as to be visible to the user of the watch and to become embellished.

In particular, at least one movable rolling ring 6 comprises an inner or outer movable groove 61 for the circulation of balls 90 or rollers. This groove 61 is called the mobile part because it rotates in relation to a groove 62 forming the opposite guide track of said balls or rollers and called the fixed part, this fixed groove 62 being stationary and fixed to a structural part of the watch, namely the plate, the middle part (middle case) or other parts.

In a constructive variant, as can be seen in fig. 13 and 14, the mobile recess 61 can be obtained by juxtaposing the mobile rolling ring 6 with one of the other constituent parts of the mass 1, each comprising half of the mobile recess 61.

Thus, in particular, and as shown in fig. 13 and 14, the mobile rolling ring 6 comprises a first conical bearing surface 68, this first conical bearing surface 68 defining half of the internal or external mobile groove 61 for the circulation of balls 90 or rollers, and the ring gear 2 comprises a second conical bearing surface 28, this second conical bearing surface 28 defining the other half of the mobile groove 61 in the working position in which the second conical bearing surface 28 is opposite to the first conical bearing surface 68.

In particular, therefore, the first guide means are arranged fixed to a fixed portion 30 for fixing to the structure of the watch, or constitute such a fixed portion 30, and comprise a fixed rolling ring 36, opposite the mobile rolling ring 6, for receiving balls 90 or rollers to guide the rotation of the mass 1.

In particular, in one non-limiting design variant, as shown in particular in fig. 19, 20, 23, 24 and 27 to 31, the fixed rolling ring 36 comprises a first portion 361 and a second portion 362 stacked on one another, said portions each having a tapered

support surface

66, 67, which constitute half of the external or internal fixing groove 62.

In particular, at least one inertial mass 4 is fastened (pressed, clamped) between the ring gear 2 and the flange plate 7.

In particular, at least one inertial mass 4 is fastened between the mobile rolling ring 6 and the flange plate 7.

In particular, at least one inertial mass 4 is fastened between the mobile rolling ring 6 and the ring gear 2.

In particular, at least one ring gear 2 is fastened between the movable rolling ring 6 and the flange plate 7.

In particular, at least one inertial mass 4 is fastened between the screw head 91 and the flange plate 7.

In particular, at least one inertial mass 4 is fastened between the screw head 91 and the ring gear 2.

In particular, at least one inertial mass 4 is fastened between the screw head 91 and the mobile rolling ring 6.

In particular, the mass 1 comprises at least one pin 21 for indexed positioning of the ring gear 2, which cooperates with

positioning holes

29, 49, 69 comprised by the ring gear 2 and/or by the inertial mass 4 and/or by the rolling ring 6.

In other assemblies of the utility model, in the mass 1, or in order to attach one of the elements to the plate, the screw 9 or the screw 900 with the bearing (journal) cooperates with the

thread

905 or 906, or with the positioning holes 29, 49, 69, which are tapped holes.

In another type of assembly, as can be seen in fig. 34, which shows a sixth variant, the two components of the mass, or one component of the mass and the plate, are assembled with each other, resting against

shoulders

901, 902 which they comprise, and joined by a screw 900 having a bearing, said screw 900 being screwed into a threaded hole 905 provided in one of the two components, the head of which rests simultaneously on one bearing surface 903 and on the other bearing surface 904.

In another type of assembly, as can be seen in fig. 37, which shows a seventh variant, at least two components of the mass, or one component of the mass and the plate, are assembled to each other, resting on

shoulders

901 and 902 comprised therein, and joined by the fitting of a nut 980 with bearing, which is introduced in a hole 907 through the two parts, and the head of said nut 980 with bearing resting on an external bearing surface 908 of one of the two parts, whose tapping cooperates with the threading of the screw 900 with bearing, which rests on an external bearing surface 904 of the other of the two parts, these external bearing surfaces being the outermost bearing surfaces of the at least two components, or of one of these components and of the plate, after assembly.

In particular, at least two components of the mass 1 are held radially to each other with respect to the mass axis D by at least one dovetail connection 604 or another similar holding connection, for example a slot connection or the like.

The utility model also relates to a watch 1000 comprising at least one energy storage device 20 arranged to cooperate with said mechanism 100.

In the first embodiment variant shown in fig. 5 to 10, therefore, the entire mass 1 is divided into a plurality of different parts from the periphery, so that the manufacture of these component parts can be separated. In a particular but non-limiting application, therefore, the first guide means, the second guide means, and the balls 90 together constitute a ball bearing, optionally comprising a cage 65 or basket, and separate from the ring gear 2, from the weight section constituting the inertial mass 4, and from the flange plate 7, which advantageously constitutes a decorative ring, or a decorative plate, or a decorative cover. Each component of the mass is simplified in order to facilitate its manufacture and assembly. In particular, this arrangement makes it possible to avoid tapping hard materials such as ceramics, carbides or the like, or to avoid unnecessary punching or milling operations on soft or precious materials such as gold. The geometry of each component is strictly limited to its specific function and to the assembly constraints with the other components, which are reduced to a minimum by the design of the mass according to the utility model. Each component part has a very simple geometry and is low cost to machine. The ring gear 2 may be directly stamped, the inertial mass 4 having only smooth surfaces and being substantially free of drillings or tappings. The rolling ring 6 can therefore be made of steel using conventional machining without special complications.

The ball bearing comprises a first integral part comprising one of the two

grooves

61, 62 for the rolling of the ball 90 and a second part formed by two stacked parts, here conventionally denoted 361, 362, which are fixed or movable, together defining the other of the

grooves

62, 61 for the rolling of the ball 90.

In order to easily ensure the relative geometric positioning of the components, at least one pin 21 and in particular a plurality of pins 21 is fixed between some of the components, for example between the inertial mass 4 and the rolling ring 6 as seen in fig. 10 of the first variant, or between the inertial mass 4 and the ring gear 2 as seen in fig. 19 showing a third variant which will be described in detail later. Thus, in particular, any additional assembly of the ball bearing is avoided. The inertial mass 4 is held here between a flange 63 formed on the outer part of the rolling ring 6 and the ring gear 2 or the flange plate 7 resting against the end face 43 of the inertial mass 4, these simple configurations being by no means limiting.

In this first variant, the mobile part is located outside the ball bearing with respect to the top D. The whole mass 1, including the bearing, is fixed by means of screws of the internal parts to the watch structure or to the movement comprised by the watch, in the non-limiting variant illustrated, the housings 31 of the fixing parts 30, three in number, comprised in the ball bearings, are distributed at 120 °. These screws are accessible from the bottom of the watch, which makes the mass 1 independent of the rest of the movement, as in a conventional mass.

In the second modification, as shown in fig. 11 to 14, the movable portion is also outside the ball bearing. The mobile rolling ring 6 comprises a first tapered bearing surface 68 defining one half of an internal or external mobile groove 61 for the circulation of balls 90 or rollers, the ring gear 2 forming a crown with a second tapered bearing surface 28 defining the other half of said internal or external mobile groove 61 in the working position in which said second tapered bearing surface 28 is opposite to the first tapered bearing surface 68. The ring crown being cut is thus integrated with rolling, which makes it possible to optimize the thickness of the assembly. This also allows a more advantageous return capability to be obtained, since the inertial mass 4 can be larger. The flange plate 7 is screwed from below.

In the embodiment shown in fig. 14, the inertial mass 4 is driven into the rolling ring 6. The complementary shapes machined in each component with dovetail joint techniques or the like ensure radial stability and are not limited herein to the assembly of the dovetail 604.

Here, the flange plate 7 has three tongues 71 which are taken out of the material, have blind tapping which allows its orientation, and are assembled by means of screws 9. As shown in fig. 13, the screw 9 is advantageously a screw with a bearing, the lower part of the head 91 of which rests on a shoulder of the inertial mass 4 and/or on another shoulder of the rolling ring 6. Naturally, a spring washer or O-ring can be inserted into the stack of component parts of the mass 1 to compensate for the play and to provide good support.

In a third variant, the active portion is inside the ball bearing. The fixed part is on the outside and the fixing under the mass 1 is realized on the dial side. This alternative would allow the center of the gauge to be freed, leaving more room for the remaining components.

In the same way as in the first variant 1, the ball bearing has no preassembled components. The orientation pin 21 is driven into the inertial mass 4. The inertial mass is held in place between the flange portion 63 of said rolling ring 6 and said ring gear 2, on the one hand by the cooperation of the bearing surface 406 of the inertial mass with the complementary bearing surface 606 of the rolling ring 6, and on the other hand by the cooperation of the bearing surface 204 of the ring gear 2 and the complementary bearing surface 402 of the inertial mass 4. The ring gear 2 is fastened by means of a screw 9, the countersunk head 91 of which rests on the flange plate 7 and cooperates with the tapping 605 of the rolling ring 6. The lower surface 206 of the ring gear 2 abuts against the upper surface 602 of the rolling ring 6.

The fourth variation is derived from the third variation and includes its movable portion inside the ball bearing. The mass is fixed on the bottom side from the outside. It is fixed on the movement through three screws. Ears on the outer periphery of the mass enable the connection.

In this fourth variant, the ring gear 2 is also separated from the ball bearings for ease of manufacture and assembly. The inertial mass 4 is made up of two parts 41 and 42 to facilitate manufacturing. An internal or external recess 6040 in the form of a cutout is formed on the rolling ring 6 and the inertial mass 4 to ensure radial retention of said inertial mass.

Fig. 25 to 31 show a fifth modification. The fifth variant does not have a flange plate 7 and comprises only the other components of the gyroscope 1. The rolling ring 6 together with the balls 90 constitutes the outer part of the ball bearing. The ring gear 2 is fixed to the rolling ring 6 by screws 9. The rolling ring 6 has substantially flat wings 64 arranged to engage in the neutral 46 comprised by the inertial mass 4 and to ensure axial stop of the latter in the direction of the gyroscope axis D. The screws 9 are screwed into a portion of the bosses 609 formed in the periphery of the rolling ring 6 and are fastened by something else, either directly in threaded holes in the inertial mass 4 or through the inertial mass 4 and cooperating with threaded holes in the wing 64 as shown. In the cheapest variant shown, the rolling ring 6 has a single outer groove for guiding the balls 90. The interior of the ball bearing comprises a first part 361 and a second part 362 stacked on each other, each comprising a conical bearing surface, each forming half of an internal groove for guiding the balls 90.

In one non-limiting embodiment, as shown in fig. 28, the second upper portion 362 is pressed against the first lower portion 361 by a flange 710 forming a fixing portion 30, which is arranged to be fixed to the structure of the watch by a screw 900 having a bearing portion, which screw 900 is inserted into a flange hole 709 and screwed into a tapping 906, in particular with reference to the positioning pin. Advantageously, the first part 361 comprises, opposite to its conical ball-guiding support surface, a second small conical adjustment support surface, substantially at the same angle as the previous support surface, and cooperating with a small complementary conical adjustment support surface comprised by the second part 362, one of these two conical adjustment support surfaces being limited by a cylindrical stop support surface to perfectly ensure the geometry of the internal ball-guiding groove in the assembled position.

In this fifth variant, the movable part of the mass is outside the ball bearing, and in particular outside the fitting diameter, which means that the assembly takes place after the movement has been fitted into the middle frame, and that a specific play arises in the middle frame. The inertial mass 4 is arranged on the rolling ring 6 by the interaction of its free end 46 with the wing 64 of the rolling ring, thus allowing axial and radial support.

The assembly of the mass 1 is fixed by means of three flange portions into which screws 900 with bearing portions are screwed, as in the case of the flush-mounting fixing of a conventional timepiece. This operation is performed after coupling the movement into the middle frame and before mounting the bottom shell. In particular, in this fifth modification, two positioning pins are used.

The particular embodiment of the fifth variant illustrated by figures 27 and 28 comprises the internal assembly of the relative bearing and the assembly of the counterweight part, i.e. the inertial mass 4, which is here located on the pin instead of the dovetail groove, which requires drilling of the inertial mass but is less expensive than the turning of the dovetail profile. The connection to the panel is similar to that shown in figures 25 to 31 but is then more visible to the user.

Fig. 28 shows the support surface 903 of a screw 900 with a bearing portion supported on a flange 710, which support surface rests with its bottom surface against the top support surface 904 of the second part 362 of the fixed roller ring 36, wherein the bottom shoulder 901 cooperates against the top shoulder 902 of the machine plate. The support between the two complementary surfaces 1902 of the

inertial masses

4 and 1901 of the mobile rolling ring 6 is shown in fig. 30.

The sixth and seventh variants are similar to the fifth variant in terms of the assembly and mounting of the inertial mass 4, they differ in the connection with the plate, the assembly details of which are described above:

a sixth variant comprises the guidance of the inertial mass by drilling, by positioning in the form of a plate and by direct retention of the screws.

A seventh variant comprises positioning by means of a foot-screw and retention by means of a screw.

The present invention provides a number of advantages. In any case, the winding capacity is improved due to the large diameter of the peripheral mass thus achieved, and its bulk is improved with respect to the known devices due to the significant gain in total thickness. Manufacturing is simplified, costs are reduced, and assembly is easier. The aesthetic appearance of the flange plate is not affected by technical limitations.

The first variant is distinguished in particular by its simplicity of manufacture, since its constituent parts are independent of one another, facilitating the assembly, and therefore the mass of the utility model can be assembled without special tools. The flange plate is particularly suitable for decorative multiple purposes.

The second variant is unique in a large winding capacity. The overall thickness can be greatly reduced.

The third variant is unique in that the aesthetic appearance of the space comprised inside the mass is not technically limited and in that the fixation of the movement into the volume of the mass is ensured.

The fourth variant is also unique in that the aesthetic aspect of the space comprised inside the mass is not affected by technical constraints and it is ensured that the winding capacity can be optimized.

The fifth variant allows optimizing the winding capacity of as many pendulums as possible on the basis of their external movable parts. Engaging the pivot portion outside the diameter makes it possible to save to the greatest extent the space available for arranging all the remaining components in the centre of the movement. The fixing by the flange of the fixed rolling ring facilitates the assembly after the assembly of the movement.

The sixth and seventh variants ensure good positioning and good fixing of the mobile assembly on the plate.

In the variant comprising the flange plate 7, which can be made of precious metal, it is less expensive due to the small thickness, since the rigidity of the gyroscope is substantially guaranteed by the mobile rolling ring 6 and the ring gear 2.

In short, the utility model simplifies the production of the pendulum, in particular without tapping in gold or hard metal, without the toothed ring having to be milled, so that the inherent components of the rolling elements do not have to be preassembled in a pin-type manner.

Claims

1. Automatic winding mechanism (100) of a watch, comprising at least one mass (1) pivotally mounted with respect to a plate about a mass axis (D), said at least one mass (1) comprising at least one toothed ring (2) having teeth (3) and arranged for driving an energy storage device (20) comprised in said automatic winding mechanism (100) or said automatic winding mechanism (100) being arranged to cooperate with said energy storage device, said at least one mass further comprising at least one inertial mass (4) comprising a non-zero unbalance with respect to said mass axis (D), said automatic winding mechanism (100) comprising rotation guiding means for guiding the rotation of each said mass (1), said rotation guiding means comprising first guiding means arranged to be fixed to the structure of the watch and second guiding means supported by said at least one mass (1) -two guiding devices, characterized in that said at least one mass (1) comprises components that are distinct from each other, at least superimposed two by two, and fixed in a coupled manner at least two by means of a fixing element (8) comprised by said at least one mass (1), said components comprising said at least one toothed ring (2), said at least one inertial mass (4), at least one mobile rolling ring (6) that constitutes said second guiding device.

2. Automatic winding mechanism (100) according to claim 1, characterized in that said components comprise said at least one ring gear (2), said at least one inertial mass (4), said at least one movable rolling ring (6), and at least one flange plate (7) for covering.

3. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said at least one ring gear (2), said at least one inertial mass (4) and said at least one movable rolling ring (6) are superposed one on top of the other.

4. Automatic winding mechanism (100) according to claim 2, characterized in that said at least one ring gear (2), said at least one inertial mass (4), said at least one mobile rolling ring (6) and said at least one flange plate (7) are superimposed one on the other.

5. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said at least one ring gear (2), said at least one inertial mass (4) and said at least one movable rolling ring (6) are jointly fixed to each other by means of said fixing element (8).

6. Automatic winding mechanism (100) according to claim 2, characterized in that said at least one ring gear (2), said at least one inertial mass (4), said at least one mobile rolling ring (6) and said at least one flange plate (7) are joined to each other by said fixed element (8).

7. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said at least one ring gear (2) and said at least one mobile rolling ring (6) constitute the upper and lower surfaces of said at least one oscillating mass (1) and enclose the other components comprised by said at least one oscillating mass (1).

8. Automatic winding mechanism (100) according to claim 2, characterized in that said at least one flange plate (7) and said at least one mobile rolling ring (6) constitute the upper and lower surfaces of said at least one oscillating mass (1) and enclose the other components comprised by said at least one oscillating mass (1).

9. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said fixing element (8) comprises a screw (9) whose head (91) cooperates in an abutting blocking manner with said ring gear (2) or with said mobile rolling ring (6), the screw thread (92) of which cooperates with said mobile rolling ring (6) or with a tapping comprised by said ring gear (2).

10. Automatic winding mechanism (100) according to claim 2, characterized in that said fixing element (8) comprises a screw (9) whose head (91) cooperates in an abutting blocking manner with said flange plate (7) or with said mobile rolling ring (6), the screw thread (95) of which cooperates with a tapping (605; 705) comprised by said mobile rolling ring (6) or by said flange plate (7).

11. Automatic winding mechanism (100) according to claim 2, characterized in that said flange plate (7) comprises a tongue (71) housed in a channel comprised by said at least one ring gear (2) and/or by said at least one inertial mass (4) and/or by said at least one mobile rolling ring (6), said tongue (71) being arranged to cooperate with said fixing element (8) to ensure a joint assembly of the whole components of said mass (1).

12. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said toothing (2) is arranged visible to a user of the watch.

13. Automatic winding mechanism (100) according to claim 2, characterized in that said flange plate (7) is arranged to be visible to a user of the watch.

14. Automatic winding mechanism (100) according to claim 2, characterized in that said at least one inertial mass (4) is fastened between said ring gear (2) and said flange plate (7).

15. Automatic winding mechanism (100) according to claim 2, characterized in that said at least one inertial mass (4) is fastened between said movable rolling ring (6) and said flange plate (7).

16. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said at least one inertial mass (4) is fastened between said mobile rolling ring (6) and said ring gear (2).

17. Automatic winding mechanism (100) according to claim 2, characterized in that said at least one ring gear (2) is fastened between said movable rolling ring (6) and said flange plate (7).

18. Automatic winding mechanism (100) according to claim 2, characterized in that said fixing element (8) comprises a screw (9) having a head (91), said at least one inertial mass (4) being fastened between the head (91) of said screw and said flange plate (7).

19. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said fixing element (8) comprises a screw (9) having a head (91), said at least one inertial mass (4) being fastened between the head (91) of said screw and said ring gear (2).

20. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said fixing element (8) comprises a screw (9) having a head (91), said at least one inertial mass (4) being fastened between the head (91) of said screw and said movable rolling ring (6).

21. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said at least one mass (1) comprises at least one pin (21) for indexed positioning of said ring gear (2), cooperating with positioning holes (29; 49; 69) comprised in said ring gear (2) and/or in said inertial mass (4) and/or in said rolling ring (6).

22. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that at least two constituent parts of the mass (1) are radially retained with respect to each other with respect to the mass axis (D) by at least one dovetail joint (604) or retaining joint.

23. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that at least two components of the mass (1) or one component of the mass (1) and the plate are assembled with each other with the shoulders (901, 902) they comprise abutting and are joined by a screw (900) with bearing portions which is screwed into a tapping (905) formed in one of them, the head of which rests simultaneously on the bearing surface (903) of one of them and on the bearing surface (904) of the other.

24. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that at least two components of said mass (1) or one component of said mass (1) and said plate are assembled with each other with the shoulders (901, 902) they comprise abutting and are joined by the cooperation of a nut (980) with bearing portions, said nut (980) with bearing portions being guided in a hole (907) passing through them, the head of said nut (980) with bearing portions resting on the external bearing surface (908) of one of them, the tapped portion of said nut (980) with bearing portions cooperating with the thread of a screw (900) with bearing portions, the head of said screw with bearing portions resting on the external bearing surface (904) of the other of them, these external bearing surfaces (908, 904) at the outermost part of the assembly of the at least two components or the assembly of the one component and the machine plate.

25. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that said first guiding means comprise a fixed rolling ring (36) opposite said movable rolling ring (6) for receiving balls (90) or rollers to guide the rotation of said mass (1).

26. Automatic winding mechanism (100) according to claim 1 or 2, characterized in that at least three components of the mass (1) having different characteristics are superposed on each other along the direction of the axis (D) of the mass.

27. Automatic winding mechanism (100) according to claim 26, characterized in that at least four components of the mass (1) having different characteristics are superposed on each other along the direction of the axis (D) of the mass.

28. A watch (1000) comprising at least one energy storage device (20), characterized in that said at least one energy storage device is arranged to cooperate with an automatic winding mechanism (100) according to any one of claims 1-27.