Membrane-type expansion device for watchmaking

Abstract

The invention relates to a diaphragm-type deployment device, in particular for watchmaking, comprising a first rigid armature and a second deformable armature, the first rigid armature and the second deformable armature being connected to each other so that the second deformable armature switches from a first extended configuration to a second compact configuration and vice versa, the device defining a first geometric shape when the second deformable armature is in the first extended configuration and a second geometric shape smaller than the first geometric shape when the second deformable armature is in the second compact configuration, the device extending substantially in the same plane when the second armature is in the first configuration or in the second configuration, characterized in that at least a first portion of the first rigid armature and at least a first portion of the second deformable armature form a first single-piece assembly, preferably made of the same material. The invention also relates to a timepiece comprising such a display device.

Description

Technical Field

[0001] The present invention relates to a membrane-type deployment device, particularly for use in watchmaking.

[0002] The invention also relates to a timepiece comprising such a deployment device. Background Art

[0003] A diaphragm-type deployment device is an element having an armature that can be switched from a compact configuration (wherein the device has a reduced volume or geometry) to an extended configuration (wherein the device has a larger volume or geometry).

[0004] These devices are frequently used in watchmaking, in particular in display devices or in devices for driving or locking the axis of rotation of a wheel.

[0005] In display devices, they can be used as removable screens to hide part or all of the information items displayed by the display device. In the compact configuration, the information is not covered so as to be visible, for example, by the wearer of a watch comprising the display device, while in the extended configuration, the device covers the information.

[0006] Examples of display devices are disclosed in documents CH46061, CH711228, DE29521914, DE1985554 or EP1842112.

[0007] In another example of application, document EP3671370 discloses an expansion device for coupling two overlapping rotating elements. In a compact configuration, the two elements are coupled by the expansion device in contact with the two elements so that one of the elements drives the other element to rotate. In an extended configuration, the two elements are disengaged so that the rotation of one element no longer drives the rotation of the other element.

[0008] Furthermore, other applications are possible, for example in systems for locking the rotation of a regulating organ balance. In the extended configuration, the deployment device actuates a lever for locking the balance, while in the compact configuration the lever is no longer actuated, leaving the balance in motion.

[0009] However, diaphragm-type deployment devices have complex armatures. In fact, they are formed by several elements joined by hinges, in particular forming a pivot between the parts. However, these hinges make the deployment device time-consuming and expensive to manufacture, especially for very small devices in the watchmaking industry. Summary of the invention

[0010] The object of the present invention is to remedy the above-mentioned drawbacks and it aims at providing a membrane-type deployment device the manufacture of which is simplified and less expensive.

[0011] To this end, the present invention relates to a diaphragm-type expansion device, in particular for watchmaking, which includes a first rigid armature and a second deformable armature, which are connected to each other so that the second deformable armature switches from a first extended configuration to a second compact configuration, and vice versa. When the second armature is in the first extended configuration, the device defines a first geometry, and when the second armature is in the second compact configuration, the device defines a second geometry that is smaller than the first geometry. When the second armature is in the first configuration or the second configuration, the device extends essentially in the same plane.

[0012] The deployment device is notable in that at least a first portion of the first rigid armature and at least a first portion of the second deformable armature form a first one-piece component, preferably made of the same material.

[0013] Therefore, it is easier to manufacture the deployment device because the rigid armature and the deformable armature are formed from a single piece. Therefore, the step of assembling the two armatures after manufacturing the two armatures is avoided. In addition, there is no need to design a hinge between the two armatures because they are continuously joined and the two armatures form one integral piece.

[0014] Thanks to the device according to the invention, the manufacturing costs are reduced and the membrane-type deployment device can be manufactured faster and can be smaller.

[0015] Other advantages of the invention are the absence of wear and its consequences, such as the occurrence of play, dust emissions, parasitic movements, risk of jamming. The use of hinge lubrication is also avoided. Furthermore, the movements are better controlled, limited and more accurate.

[0016] According to a particular embodiment of the invention, the entire first rigid armature and the entire second deformable armature form a first one-piece assembly.

[0017] According to a particular embodiment of the invention, the second portion of the first rigid armature and the second portion of the second deformable armature form a second one-piece component.

[0018] According to a particular embodiment of the invention, the first component and the second component overlap each other.

[0019] According to a particular embodiment of the invention, the second deformable armature comprises at least two movable baffles, preferably four movable baffles, which are distributed symmetrically through an angle.

[0020] According to a particular embodiment of the invention, the baffle defines a first opening of a first configuration and a second opening of a second configuration.

[0021] According to a particular embodiment of the invention, the material of the device will be selected from silicon, a nickel-phosphorus alloy of the Ni / P type, or a steel alloy of the Fe / Ni / Co / Mo type.

[0022] According to a particular embodiment of the invention, the second deformable armature comprises first deformable portions and rigid portions which are assembled alternately.

[0023] According to a particular embodiment of the invention, a first deformable portion connects a rigid portion to a next rigid portion.

[0024] According to a particular embodiment of the invention, the second deformable armature comprises a second deformable portion connecting one of each two rigid portions to the first rigid armature.

[0025] According to a particular embodiment of the invention, the rigid portion connected to the first rigid armature has a different shape than the other rigid portions.

[0026] According to a particular embodiment of the invention, each deformable portion comprises a flexible strip connecting, by its ends, the two rigid portions or the rigid portion and the first rigid armature.

[0027] According to a particular embodiment of the invention, the device comprises means for moving at least one rigid portion, preferably several rigid portions, in order to switch the second armature from the extended configuration to the compact configuration and vice versa.

[0028] According to a particular embodiment of the invention, the rigid part(s) moved by the moving means are rigid parts connected to the first rigid armature.

[0029] According to a particular embodiment of the invention, the rigid part(s) moved by the moving means are rigid parts which are not connected to the first rigid armature.

[0030] According to a particular embodiment of the invention, the movement means are configured to generate a substantially rectilinear movement of the rigid portion(s).

[0031] According to a particular embodiment of the invention, the movement means are configured to generate a rotational movement of the rigid part(s).

[0032] According to a particular embodiment of the invention, the rigid portion connected to the first rigid armature undergoes a rotational movement about a pivot point when the second armature switches from the extended configuration to the compact configuration and vice versa.

[0033] According to a particular embodiment of the invention, the second deformable armature delimits an outer periphery of the diaphragm, the first rigid armature being arranged inside said periphery.

[0034] According to a particular embodiment of the invention, the first rigid armature delimits the outer periphery of the diaphragm and the second armature is arranged inside said periphery.

[0035] According to a specific embodiment of the invention, the first geometry defines a first opening when the second deformable armature is in the first extended configuration, and the second geometry defines a second opening when the second deformable armature is in the second compact configuration, the first opening being narrower than the second opening.

[0036] According to a particular embodiment of the invention, each flap is arranged on a different rigid portion of the second deformable armature.

[0037] According to a specific embodiment of the invention, the first geometric shape defines a first perimeter when the second deformable armature is in the first extended configuration, and the second geometric shape defines a second perimeter when the second deformable armature is in the second compact configuration, the first perimeter being larger than the second perimeter.

[0038] According to a particular embodiment of the invention, the second deformable armature comprises at least one spacer, preferably four spacers, making it possible to define a variable perimeter of the device, each spacer being arranged on a different rigid portion of the second deformable armature.

[0039] According to a particular embodiment of the invention, the diaphragm forms a cam, wherein the geometry is variable.

[0040] The invention also relates to a movement for a timepiece including such a deployment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Further specific features and advantages will emerge clearly from the description given hereinafter, which is intended as an indication and is by no means limiting, with reference to the accompanying drawings, in which:

[0042] Figure 1 is a schematic representation of a membrane-type deployment device without a baffle according to a first embodiment of the present invention;

[0043] Figure 2 is a schematic representation of a membrane-type deployment device of a first embodiment of the present invention in a compact configuration with a baffle;

[0044] Figure 3 is a schematic representation of a membrane-type deployment device of a first embodiment of the present invention in an intermediate configuration with a baffle;

[0045] Figure 4 is a schematic representation of a membrane-type deployment device of a first embodiment of the present invention in an extended configuration with a baffle;

[0046] Figure 5 is a schematic representation of a membrane-type deployment device of a first embodiment of the invention applied to a system for locking a balance staff;

[0047] Figure 6is a schematic representation of a membrane-type deployment device according to a second embodiment of the present invention;

[0048] Figure 7 is a schematic representation of a separation of a membrane-type deployment device according to a second embodiment of the present invention;

[0049] Figure 8 is a schematic representation of the layers of a membrane-type deployment device of a second embodiment of the present invention;

[0050] Fig. 9 is a schematic representation of a membrane-type deployment device of a second embodiment of the present invention in a compact configuration;

[0051] Fig.10 is a schematic representation of a membrane-type deployment device of a second embodiment of the present invention in an intermediate configuration;

[0052] Fig.11 is a schematic representation of a membrane-type deployment device of a second embodiment of the present invention in an extended configuration;

[0053] Fig.12 is a schematic representation of a membrane-type deployment device according to a third embodiment of the present invention;

[0054] Fig.13 is a schematic representation of a membrane-type deployment device of a third embodiment of the present invention in a compact configuration; and

[0055] Fig.14 is a schematic representation of a membrane-type deployment device of a third embodiment of the present invention in an extended configuration. DETAILED DESCRIPTION

[0056] The invention relates to a membrane-type unfolding device 1, 10, 20, in particular for watchmaking. In the following embodiments, the membrane-type unfolding device is, for example, a timepiece display device, such as a clock movement of a watch.

[0057] The deployment device comprises a first rigid armature 2 and a second deformable armature 3. The term rigid means that the armature is not intended to be flexible in normal use of the device 1,10,20, whereas the deformable armature is intended to deform during use of the device 1,10,20.

[0058] The first rigid armature 2 comprises a square frame 4, each side being formed, for example, by an arm. The frame 4 defines an internal space in which the second deformable armature 3 is arranged. Thus, the first rigid armature 2 defines the outer perimeter of the device 1, while the second flexible armature 3 is arranged inside said perimeter.

[0059] By its flexibility, the second deformable armature 3 can be switched from the first extended configuration to the second compact configuration.When the second deformable armature 3 is in the first configuration or in the second configuration, the device 1 extends substantially in the same plane.

[0060] The second deformable armature 3 has an arrangement comprising flexible portions 7, 8 and rigid portions 5, 6. The flexible portions 7, 8 connect the rigid portions 5, 6 to each other or to the first rigid armature 2.

[0061] Each flexible part 7, 8 comprises a flexible strip connected by one end to the first rigid armature 2 and by the other end to the rigid part 5, 6, or by one end for each rigid part 5, 6 to both rigid parts 5, 6. The flexible strip preferably has a longitudinally elongated straight shape.

[0062] The rigid parts are rigid arms 5, 6 which may be straight 6 or form a U-shaped piece.

[0063] exist Figures 1 to 5 In an embodiment of the invention, the second deformable armature 3 alternatively comprises a rigid arm and a flexible strip connected in series. More specifically, the deformable armature comprises a group connected in series, the group comprising a U-shaped rigid arm 5, a first straight flexible strip 7, a straight rigid arm 6 and a second flexible strip 7 connected in series. The free end of the flexible strip 7 is joined to the free ends of the rigid arms 5 and 6. The flexible strip 7 and the straight arm 6 are substantially collinear, and the U-shaped piece is arranged in the plane of the second flexible armature perpendicular to the strips. The ends of the arms of the U-shaped piece are arranged at the ends of the flexible strip 7, and their bases are substantially parallel to the straight rigid arms 6. The inner side of the U-shaped piece is oriented toward the first rigid armature 2. The first rigid armature 2 comprises a buckle 9 extending from each side toward the inner side of each U-shaped piece of the second deformable armature 3.

[0064] Thus, the second deformable armature 3 comprises four groups placed in series to form a square within the frame 4 of the first rigid armature 2, each group running along one side of the frame 4 within the space of the frame 4. The groups are perpendicular relative to each other. Each assembly comprises a U-shaped rigid arm, a first flexible strip 7, a straight rigid arm 6 and a second flexible strip 7.

[0065] The second deformable armature 3 is connected to the first rigid armature 2 by third flexible strips 8 arranged in line with the catches 9, each third flexible strip 8 connecting the end of the catch 9 to the base of the U-shaped piece by entering the space defined by the U-shaped piece.

[0066] Thus, the first rigid armature 2 and the second deformable armature 3 are joined to each other by anchoring points defined at the ends of each catch. These anchoring points locally define the axis of rotation about which the deformable armature can rotate when deforming.

[0067] The device 1 comprises a baffle 11 arranged on each U-shaped rigid portion 5, preferably supported by the base of the U. The baffle 11 extends towards the centre of the device 1 to define an opening. Figures 1 to 4 The embodiment in the embodiment comprises two pairs of opposing baffles 11 arranged perpendicularly relative to each other. Each baffle 11 is arranged on the base of the U-shaped piece. The baffle has an elongated shape, wherein the free end is separated from the hook-shaped circular edge oriented towards the center of the device 1. The two facing baffles 11 are substantially symmetrical relative to the center of the device 1. The baffles are distributed by angular symmetry according to the angle a between the two baffles, wherein Here n is the number of baffles of the device 1 .

[0068] Each baffle 11 covers or is partially covered by an adjacent baffle 11. Thus, the circular edges of the baffles form a substantially circular opening, depending on the arrangement of the baffles relative to each other.

[0069] According to the invention, the first rigid armature 2 and the second deformable armature 3 at least partially form a one-piece assembly. Here, the entire first rigid armature 2 and the entire second deformable armature 3 form a one-piece assembly. The two armatures form a single continuous integral piece.

[0070] Preferably, the two armatures are formed of the same material. For example, the material of the device 1 will be selected from silicon, a nickel-phosphorus alloy of the Ni / P type, or a steel alloy of the Fe / Ni / Co / Mo type.

[0071] Therefore, the two armatures 2, 3 are manufactured in the same way to save time and reduce manufacturing costs. Optionally, the baffle is also formed in one piece with the two armatures 2, 3 with the same material.

[0072] For silicon, the device 1 is preferably manufactured by a DRIE (Deep Reactive Ion Etching) type method.

[0073] Conventional LIGA type photolithography methods are used to form devices 1 made of nickel-phosphorus alloys or of steel alloys.

[0074] The device 1 comprises movement means (not shown in the figures) configured to switch the second deformable armature 3 from the compact configuration to the extended configuration and vice versa. These movement means may also be embodied by flexible elements.

[0075] For this purpose, the displacement means exert a displacement on at least one rigid portion of the second deformable armature 3 .

[0076] Preferably, in this embodiment, the movement is exerted on straight rigid arms 6. Preferably, the movement means exert a force on several straight rigid arms 6 of the second deformable armature 3.

[0077] The moving means comprise for example a lever connected by a shaft arranged through an opening in the straight rigid arm 6. Upon actuation of the lever, the shaft pulls or pushes the straight rigid arm 6.

[0078] The movement means are configured to produce a substantially rectilinear movement of the second set of (one or more) straight rigid portions 6. Preferably, the movement is performed in the longitudinal direction of the straight arms 6.

[0079] When moving these rigid parts, the U-shaped rigid parts 5 are also moved by the flexible strips 7 connecting them to the straight rigid arms 6 .

[0080] The U-shaped rigid part 5 performs a rotation about the anchoring point thanks to the flexible strip 8 connecting it to the catch 9 of the first rigid armature 2. Thus, the flap 11 moves and changes position according to the configuration of the device 1.

[0081] When the second deformable armature 3 is in the first, extended configuration, the device 1 defines a first opening, and when the second deformable armature 3 is in the second, compact configuration, the device defines a second opening. The first opening is narrower than the second opening.

[0082] like Figure 2 As shown, the second deformable armature 3 is in a compact position so that the flaps 11 are separated to form a wide opening. The straight rigid portion 6 is longitudinally adjacent to the first rigid armature.

[0083] exist Figure 3 In the embodiment, the second deformable armature 3 is in the intermediate position and the straight rigid portions 6 have been moved longitudinally so that they move away from the first rigid armature 2. Thus, the opening ratio of the device is Figure 1 The opening of the device 1 in is narrower.

[0084] And in Figure 4 In the embodiment shown in FIG. 2 , the second deformable armature 3 is in an extended position, the straight rigid portion 6 is longitudinally away from the first rigid armature 2. Thus, an even narrower opening is obtained.

[0085] Preferably, the intermediate position is selected as the rest position of the device so that it can be switched to the extended position or the compact position more quickly. In fact, the movement from the rest position to one of the two other positions is shorter (compared with selecting one of the two other positions as the rest position).

[0086] In a particular embodiment, the shutter 11 may overlap the opening and completely close it so as to form a screen without an opening. The device 1 is completely closed in the extended configuration of the second flexible armature 3, for example in the case of a display device 1, wherein the membrane hides an information item such as date or time.

[0087] Figure 5is an example of the application of a membrane-type unfolding device 1 applied to a system for locking a tourbillon-type balance. In the extended position, the bezel 11 is directed to the inside of the circle to come into contact with the control lever 46 of the stop lever 47 so as to rotate the stop lever 47 and the stop portion 28 at its end opposite the control lever 46 about its axis of rotation 48, thus coming into contact with the cam 30 on the shaft of the spring balance so as to temporarily stop it for the resetting of the watch. This stop lever 47 can temporarily stop the operation of the watch by locking the spring balance in its axis of rotation 48, for example by contacting the balance stop cam 30 on the shaft of the spring balance 14. The stop lever 47 is held in a rest position, for example, by a spring fastened to the stop lever 47 between the control lever 46 and the axis of rotation 48 on the one hand and to the cage support on the other hand.

[0088] exist Figures 6 to 9 In the second embodiment of the invention, the rigid armature 12 and the deformable armature 13 are embodied in two overlapping layers 25, 26, which define a first and a second overlapping assembly. The first layer includes the rigid armature 12 and the first part of the deformable armature 13 and the two baffles 21, while the second layer includes the rigid armature 12 and the second part of the deformable armature 13 and the two baffles 21. The two layers have in common one piece of the unfolding device 1, which includes everything that enters the two buckles of the rigid armature. In other words, one side of the device is duplicated in duplicate on each layer of the device 10.

[0089] exist Figure 7 and Figure 8 In the embodiment, for the rigid armature 12, the first layer 25 includes one side of the device 10, and the corner of the catch 19 up to the second side, and the third opposite position up to the next catch 19. For the deformable armature 13, the first layer 25 includes an element extending from the half of the U-shaped rigid part 15 corresponding to the second side to the half of the U-shaped rigid part 15 corresponding to the third opposite side. In addition, the first layer 25 includes two baffles 21 extending from each half of the U-shaped rigid part 25.

[0090] The second layer 26 comprises the same configuration rotated by 90° (here to the left). Thus, with respect to the device 1 of the first embodiment, each layer 25, 26 comprises a whole side, as well as a quarter side and three quarter side at the two corners of the whole side.

[0091] To form the device 10, the two layers 25, 26 are superimposed, in contact with each other. The two layers 25, 26 form a 90° angle between each other. Some sides are formed by a single layer, while only one side is formed in both layers 25, 26 simultaneously.

[0092] Relative to Figures 1 to 5In a first embodiment of the device 1, the two overlapping layers 25, 26 form a truncated device 10, in which a part of the side of the rigid armature 12 between the two catches 19, and a part of the deformable armature 13 between the two semi-U-shaped rigid parts 15 are missing. Thus, in addition to the two semi-U-shaped rigid parts 15, the corners of the frame are missing, as well as the two flexible strips 17 and the straight rigid part 16.

[0093] The operation of the device 10 is identical to that of the device 1 of the first embodiment. The second deformable armature 13 is extended or compressed when the three straight rigid portions 16 are moved longitudinally. The two opposing straight rigid portions 16 move in opposite directions, while the third portion moves vertically in either direction, depending on the configuration sought.

[0094] exist Fig. 9 (Extended Configuration), the opening formed by the baffle 21 is wide. Fig.10 As shown, the opening is narrower in the middle position of the device 10. Fig.11 In the compact configuration, the opening is the narrowest.

[0095] The actuation of the device of this embodiment may be performed by a pin passing through the two rigid elements 16 of the two layers 25, 26. For example, the pin is actuated by a mobile control arm comprising an oblong hole in which the pin is inserted.

[0096] like Figure 12 to Figure 14 As shown, a third embodiment of a membrane-type deployment device 20 comprises an annular partition equipped with snaps 39 distributed angularly around the ring on its outer side. The deformable armature extends outwardly around the rigid armature. The second deformable armature 33 defines the outer periphery of the membrane, and the first armature 32 is arranged inside the periphery. The device 20 is substantially flat and extends substantially in one plane.

[0097] The second deformable armature 33 comprises rigid parts 35, 36 and flexible parts 37, 38. The second deformable armature 33 comprises first rigid parts 35 and second rigid parts 36 (preferably four each), which are alternately distributed around the ring. The first rigid part 35 has a triangular shape with an outer protrusion and a front protrusion with two opposite tips. And the second rigid part 36 has a curved elongated shape.

[0098] The flexible part comprises flexible strips 37, 38 connecting the rigid parts 35, 36 to each other, and a snap 39 connecting the first rigid part 35 to the central ring. The first flexible strip 38 is arranged in series between the triangular protrusion and the snap 39, while the second flexible strip 37 is arranged between the other protrusion and the outer end of the curved rigid part 36. Finally, the third strip 37 is arranged in series between the other end of the curved rigid part 36 and the outer protrusion of the first rigid part 35.

[0099] Furthermore, the device 20 comprises a plurality of arcuate spacers 29 (here 4), each spacer being arranged on a triangular rigid portion 35. The spacers 29 are preferably in one piece with each triangular rigid portion 35 and cantilever from the outside of the triangular rigid portion 35. The spacers 29 form a circular periphery of the device, moving away from the ring when the deformable armature is extended, and moving closer to the ring when the deformable armature is compacted.

[0100] Each pad 29 comprises a segment 41 that will partially overlap on the arc of the adjacent pad 29. The pads 29 overlap more or less, whether the configuration of the device 20 is in a compact or extended position. Thus, the pads 29 can move relative to each other while forming a continuous barrier around the device 20, regardless of its configuration. This barrier can come into contact with other elements of the watch movement to release or lock the mechanism.

[0101] In the extended position of the device 20 , the spacers form a substantially circular barrier around the axis, whereas in the compact position of the device 20 , the spacers 29 are deflected relative to each other while maintaining an overlap between adjacent spacers 29 .

[0102] According to the invention, for this embodiment, the entire first rigid armature 32 and the entire second deformable armature 33 form a one-piece assembly.

[0103] In this embodiment, the moving means are connected to the first rigid part 35 so as to promote the rotational movement around the axis passing through them. Thus, the moving means are configured to produce the rotational movement of the first rigid part 35 and thus enable the spacers 29 to move apart or move closer together. The first flexible strip 38 is used to connect the second deformable armature 33 to the first rigid armature 32, as well as a means for returning the first rigid part 35 to a position corresponding to the compact configuration.

[0104] Rotating the first rigid portion 35 causes movement of the spacer toward the outside of the device 20 in one rotational direction, and movement in the opposite direction toward the inside of the device 20. At the same time, the spacer 29 itself rotates slightly to switch from a first position corresponding to a compact configuration to a second position corresponding to an extended configuration, and vice versa.

[0105] After the rotation of the first rigid part 37, the second rigid part 36 also rotates itself due to the first flexible strip 37. The second rigid part 36 is used to fix the second deformable armature 33.

[0106] Such a device 20 can be used, for example, for a locking system of a tourbillon or, for example, for a coupling system between two overlapping trains. For example, the diaphragm support is arranged at a distance from the device to release the cam of the system. In the extended position, the diaphragm moves away and exerts a force against the cam or the Bloom stud.

[0107] Obviously, the invention is not limited to the embodiment shown, but is applicable to various alternative embodiments and modifications that will be obvious to a person skilled in the art. Other applications are possible, in which the membrane forms, for example, a cam, in which the geometry is variable. The flexible strip can also have a strip shape with a flexible neck, or be replaced by a combination of strips that can be crossed or straight, or by a flexible element.

Claims

1. A diaphragm-type deployment device, the device comprising a first rigid armature and a second deformable armature, the first rigid armature and the second deformable armature being connected to each other so that the second deformable armature switches from a first extended configuration to a second compact configuration, and from a second compact configuration to a first extended configuration, when the second deformable armature is in the first extended configuration, the device defines a first geometric shape, and when the second deformable armature is in the second compact configuration, the device defines a second geometric shape that is smaller than the first geometric shape, when the second deformable armature is in the first extended configuration or the second compact configuration, the device extends in the same plane, characterized in that At least a first portion of the first rigid armature and at least a first portion of the second deformable armature form a first one-piece assembly.

2. The device according to claim 1, characterized in that The entire first rigid armature and the entire second deformable armature form said first one-piece assembly.

3. The device according to claim 1, characterized in that The second portion of the first rigid armature and the second portion of the second deformable armature form a second one-piece assembly.

4. The device according to claim 3, characterized in that The first one-piece component and the second one-piece component overlap each other.

5. The device according to any one of claims 1 to 4, characterized in that The first rigid armature defines an outer periphery of the diaphragm, and the second deformable armature is arranged inside the outer periphery.

6. The device according to claim 5, characterized in that The first geometry defines a first opening when the second deformable armature is in the first extended configuration, and the second geometry defines a second opening when the second deformable armature is in the second compact configuration, the first opening being narrower than the second opening.

7. The device according to claim 5, characterized in that The second deformable armature includes at least two movable baffles, and the baffles are distributed angularly symmetrically.

8. The device according to claim 6, characterized in that The second deformable armature comprises at least two movable baffles, which are distributed symmetrically by an angle, and which define the first opening in the first extended configuration and the second opening in the second compact configuration.

9. The device according to any one of claims 1 to 4, characterized in that The second deformable armature defines an outer periphery of the diaphragm, and the first rigid armature is arranged inside the outer periphery.

10. The device according to claim 9, characterized in that The first geometric shape defines a first perimeter when the second deformable armature is in the first extended configuration, and the second geometric shape defines a second perimeter when the second deformable armature is in the second compact configuration, the first perimeter being larger than the second perimeter.

11. The device according to claim 10, characterized in that The second deformable armature comprises at least one spacer making it possible to define a variable perimeter of the device, each spacer being arranged on a different rigid portion of the second deformable armature.

12. The device according to any one of claims 1 to 4, characterized in that The second deformable armature includes a first deformable portion and a rigid portion that are alternately assembled, and the first deformable portion connects the rigid portion to the next rigid portion.

13. The device according to claim 12, characterized in that The second deformable armature includes a second deformable portion connecting every other rigid portion to the first rigid armature.

14. The device according to claim 13, characterized in that The rigid portion connected to the first rigid armature has a different shape than the other rigid portions.

15. The device according to claim 12, characterized in that Each deformable portion comprises a flexible strip connecting, by its ends, two rigid portions or a rigid portion and the first rigid armature.

16. The device according to claim 12, characterized in that It comprises movement means for moving at least one rigid portion in order to switch said second deformable armature from said first extended configuration to said second compact configuration and from said second compact configuration to said first extended configuration.

17. The device according to claim 16, characterized in that The rigid part moved by the moving device is a rigid part connected to the first rigid armature.

18. The device according to claim 16, characterized in that The rigid part moved by the moving device is a rigid part that is not connected to the first rigid armature.

19. The device according to claim 18, characterized in that The movement means is configured to produce a linear movement of the rigid portion.

20. The device according to claim 17, characterized in that The movement device is configured to produce a rotational movement of the rigid part.

21. The device according to claim 16, characterized in that The rigid portion connected to the first rigid armature undergoes a rotational movement about a pivot point when the second deformable armature switches from the first extended configuration to the second compact configuration and from the second compact configuration to the first extended configuration.

22. The device of claim 12, each baffle being disposed on a different rigid portion of the second deformable armature.

23. The device according to any one of claims 1 to 4, wherein the material of the device is selected from silicon, Ni / P type nickel-phosphorus alloy, or Fe / Ni / Co / Mo type steel alloy.

24. The device according to any one of claims 1 to 4, wherein: The device is used for watchmaking.

25. The device according to any one of claims 1 to 4, wherein: At least a first portion of the first rigid armature and at least a first portion of the second deformable armature form a first one-piece assembly made of the same material.

26. The device according to claim 7, characterized in that The second deformable armature includes at least four movable baffles.

27. The device according to claim 11, characterized in that The second deformable armature includes four spacers.

28. The device according to claim 16, characterized in that It comprises means for moving a plurality of rigid parts.

29. A timepiece, characterized in that: It comprises a membrane-type unfolding device according to any one of claims 1-28.

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