• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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    • 专利摘要:
    The invention relates to an oscillator (13) for a regulator of a timepiece mechanism comprising a frame (16), a body (17) oscillating about an axis of rotation (Δ), and a plurality of sets of connecting rods. pivoting (18) connecting the oscillating body (17) to the frame (16). Each connecting rod (20-26) extends parallel to a median plane (XY) of the oscillator (13). Each set of pivoting connecting rods (18) comprises at least four connecting rods (20, 22, 24, 26) forming two parallelograms articulated and connected at their center (G). The connection between the connecting rods (20-26), between the connecting rods (20-26) and the oscillating body (17) and between the connecting rods (20-26) and the frame (16) is made by means of a flexible blade (28). The invention also relates to a mechanism comprising such an oscillator and an anchor, a movement comprising such a mechanism, a timepiece comprising such a movement and a method for producing such an oscillator.
    公开号:CH715889A2
    申请号:CH00190/20
    申请日:2020-02-19
    公开日:2020-08-31
    发明作者:Mercier Thomas；Semon Guy
    申请人:Lvmh Swiss Mft Sa；
    IPC主号:
    专利说明:

    Technical area
    The present invention relates to an oscillator for a timepiece mechanism regulator, to a mechanism and to a movement for a timepiece comprising such an oscillator and to a timepiece comprising such a mechanism for a timepiece. watchmaking. According to another aspect, the invention relates to a method of manufacturing an oscillator for a timepiece.
    Prior art
    [0002] Mechanisms are known for a timepiece comprising:<tb> - <SEP> a regulator or oscillator, comprising at least a first regulating member elastically mounted on a support for oscillating,<tb> - <SEP> an anchor adapted to cooperate with an energy distribution member provided with teeth and intended to be requested by an energy storage device, the anchor being controlled by the first regulating member for regularly and alternately block and release the energy distribution member, so that the energy distribution member moves step by step under the stress of the energy storage device according to a repetitive movement cycle. The anchor is adapted to transfer mechanical energy to the regulator during this repetitive cycle of motion. The oscillating member of the governor generally has the shape of a flat wheel. It is conventionally mounted to rotate on a central shaft.
    [0003] The invention aims to provide an oscillator having a design different from existing designs, while being balanced in rotation.
    Summary of Description
    [0004] An oscillator is proposed for a timepiece mechanism regulator, comprising:<tb> - <SEP> a frame;<tb> - <SEP> a body oscillating around an axis of rotation;<tb> - <SEP> a plurality of sets of pivoting connecting rods, each connecting rod extending parallel to a median plane of the oscillator, each assembly of pivoting connecting rods comprising at least first, second, third and fourth connecting rods such as :<tb> - <SEP> in the vicinity of a first end of the first connecting rod, the first connecting rod is pivotally mounted relative to the frame about a first axis of rotation, the first axis of rotation intercepting the median plane of the oscillator at a point A;<tb> - <SEP> in the vicinity of a first end of the second connecting rod, the second connecting rod is mounted to pivot relative to the frame about a second axis of rotation, the second axis of rotation intercepting the median plane of the oscillator at point B;<tb> - <SEP> in the vicinity of a first end of the third connecting rod, the third connecting rod is mounted to pivot with respect to the oscillating body about a third axis of rotation, the third axis of rotation intercepting the median plane of the 'oscillator at a point C;<tb> - <SEP> in the vicinity of a second end of the first connecting rod and of a second end of the fourth connecting rod, the first and fourth connecting rods are mounted to pivot with respect to each other around a fifth axis of rotation, the fifth axis of rotation intercepting the median plane of the oscillator at a point E;<tb> - <SEP> in the vicinity of a second end of the second connecting rod and a second end of the third connecting rod, the second and third connecting rods are mounted to pivot with respect to each other around a sixth axis of rotation, the sixth axis of rotation intercepting the median plane of the oscillator at a point F;<tb> - <SEP> the second and fourth connecting rods are mounted to pivot with respect to each other, around a seventh axis of rotation, the seventh axis of rotation intercepting the median plane of the oscillator at a point G;<tb> - <SEP> each of the first, second, third, fourth, fifth, sixth and seventh axes of rotation being substantially normal to the median plane of the oscillator;<tb> - <SEP> the quadrilaterals ABGE and GDCF are parallelograms;<tb> - <SEP> the straight lines (AB) and (CD) are concurrent at a point O common to all the sets of pivoting connecting rods, said common point O corresponding to the intersection of the axis of rotation of the organ oscillating with the median plane of the oscillator.
    [0005] Thus, advantageously, the oscillating member has substantially a pure rotational movement. However, due to its structure, the oscillator is particularly robust. A number of sets of connecting rods greater than or equal to two, preferably greater than or equal to three, makes it possible to further increase the robustness of the oscillator.
    [0006] The oscillator may have one or more of the following characteristics, taken alone or in combination:<tb> - <SEP> the oscillator comprises at least three sets of pivoting connecting rods;<tb> - <SEP> the sets of pivoting connecting rods are angularly evenly distributed around the axis of rotation of the oscillating body;<tb> - <SEP> the sets of swivel rods are identical;<tb> - <SEP> the distance OD is approximately equal to the distance DC;<tb> - <SEP> the distance AE is approximately equal to the distance GF;<tb> - <SEP> points B, G and F are aligned;<tb> - <SEP> points E, G, D are aligned;<tb> - <SEP> each connection between the connecting rods, between the connecting rods and the oscillating member and between the connecting rods and the frame is made by means of a flexible blade, each flexible blade extending mainly in a plane normal to the median plane of the oscillator;<tb> - <SEP> the oscillator is produced at least in part by a process of superposition of plane layers and deployment; and<tb> - <SEP> the oscillator is designed to oscillate at a frequency greater than or equal to 4 Hz, preferably greater than or equal to 5 Hz, and / or less than or equal to 50 Hz, preferably less than or equal to 15 Hz.
    [0007] According to another aspect, there is proposed a mechanism for a timepiece comprising:<tb> - <SEP> an oscillator as described above in all its combinations,<tb> - <SEP> an anchor adapted to cooperate with an energy distribution member and intended to be requested by an energy storage device, said anchor being controlled by the oscillator to regularly and alternately block and release the 'energy distribution member, so that said energy distribution member moves step by step under the stress of the energy storage device in a repetitive movement cycle, and said anchor being adapted to transfer energy. mechanical energy to the oscillator during this repetitive cycle of motion.
    [0008] The oscillator can also include:<tb> - <SEP> a second oscillating member resiliently mounted on the frame to oscillate, the first and second oscillating members being connected to each other to always have symmetrical and opposite movements, and<tb> - <SEP> a balancing member which is controlled by the second oscillating member to move in symmetrical and opposite movements to the anchor.
    [0009] A watch movement is also described comprising a mechanism as described above in all its combinations and said energy distribution member.
    A timepiece comprising a horological movement as described above in all its combinations is also described.
    Finally, a method is described for producing an oscillator as described above in all its combinations, comprising:<tb> - <SEP> the production of blades in flexible material;<tb> - <SEP> the superposition of layers forming the connecting rods and / or the oscillating body and / or the frame, in rigid material (s); and<tb> - <SEP> fixing the flexible blades to the connecting rods, the oscillating body and the frame, if applicable.
    [0012] The flexible blades can be produced by superimposing layers, at least one of which is flexible with respect to the others, and by deploying the flexible blades so that each of these extends mainly in a plane perpendicular to the plane of the layers .
    Brief description of the drawings
    Other characteristics, details and advantages of the invention will become apparent on reading the detailed description below, and on analyzing the accompanying drawings, in which:
    [0014] [Fig. 1] is a schematic view of a timepiece comprising a mechanism for a timepiece;
    [0015] [Fig. 2] is a block diagram of the movement of the timepiece of FIG. 1;
    [0016] [Fig. 3] is a plan view of a first example of an oscillator which can be implemented in the movement of FIG. 2, in a first position;
    [0017] [Fig. 4] is a plan view of the oscillator of FIG. 3, in a second position;
    [0018] [Fig. 5] shows in perspective a second example of an oscillator which can be implemented in the movement of FIG. 2;
    [0019] [Fig. 6] illustrates a first step in producing an oscillator as illustrated in FIG. 5;
    [0020] [Fig. 7] illustrates a second step in the production of an oscillator such as illustrated in FIG. 5;
    [0021] [Fig. 8] illustrates a third step of making an oscillator as illustrated in FIG. 5;
    detailed description
    In the various figures, the same references designate identical or similar elements.
    [0023] Figure 1 shows a timepiece 1 such as a watch, comprising:<tb> - <SEP> a box 2,<tb> - <SEP> a watch movement 3 contained in case 2,<tb> - <SEP> generally, a winder 4,<tb> - <SEP> a dial 5,<tb> - <SEP> a glass 6 covering the dial 5,<tb> - <SEP> a time indicator 7, comprising for example two hands 7a, 7b respectively for the hours and the minutes, arranged between the glass 6 and the dial 5 and actuated by the watch movement 3.
    As shown schematically in Figure 2, the watch movement 3 can include for example:<tb> - <SEP> a device 8 for storing mechanical energy, generally a barrel spring,<tb> - <SEP> a mechanical transmission 9 driven by the mechanical energy storage device 8,<tb> - <SEP> the aforementioned time indicator 7,<tb> - <SEP> an energy distribution member 10 (for example an escape wheel),<tb> - <SEP> an anchor 11 adapted to sequentially retain and release the energy distribution member 10,<tb> - <SEP> a regulator 12, which is a mechanism comprising an oscillating inertial regulating member (or oscillator) 13, controlling the anchor 11 to move it regularly so that the energy distribution member 10 is moved step by step at constant time intervals.
    The anchor 11 and the regulator 12 form a mechanism 14. The mechanism 14 can advantageously be a system whose moving parts are designed to move essentially in a median plane XY or parallel to a median plane XY of the mechanism.
    A decoupling member 15 can be interposed between the decoupling member and the regulator, which then forms part of the mechanism 14.
    The energy distribution member 10 may be an escapement wheel mounted to rotate, for example on a support plate, so as to be able to rotate about an axis of rotation perpendicular to the median plane XY of the mechanism 14. The energy distribution member 10 is requested by the energy storage device 8 in a single direction of rotation.
    The regulator 12 may include an oscillator 13 as illustrated in Figure 3.
    In this Figure 3, the oscillator 13 firstly comprises a frame 16 fixed relative to the housing 2. In this case, the frame 16 is formed by a substantially planar plate extending in the directions X and Y. The plate is thus parallel to the median plane XY of oscillator 13.
    The oscillator 13 further comprises an oscillating body 17, which oscillates relative to the frame 16, about an axis of rotation Δ substantially parallel to the Z direction normal to the XY plane. The axis of rotation Δ of the oscillating body intercepts the median plane XY of the oscillator 13 at a point O, corresponding substantially to the center of the oscillating body 17. The oscillating body 17 here has the shape of a star with three branches. Of course, this shape of the oscillating body is given only as an example and this oscillating body 17 can take many other shapes accessible to those skilled in the art. Advantageously, however, the oscillating body 17 exhibits a rotational symmetry of order N with N ≥ 1. Here, the oscillating body 17 exhibits a symmetry of revolution of order 3, by way of example.
    The oscillator 13 further comprises a plurality of sets 18 of connecting rods, each of the connecting rods extending in a plane parallel to the plane of the frame 16. Thus, the oscillator 13 extends along the median plane XY of the 'oscillator 13, parallel in the example illustrated, to the plane of the frame 16. Advantageously, the oscillator 13 comprises a number N of sets of connecting rods 18 equal to the order of the symmetry of revolution of the oscillating body 17.
    By "connecting rod" (or "beam") is meant here any rigid body having at least two joints relative to other parts, which may in particular be the frame 16, the oscillating body 17 or another connecting rod d 'the same set of connecting rods 18. In the present case, these articulations can in particular be located in the vicinity of the ends of a connecting rod, the connecting rod being able to extend mainly in a rectilinear extension direction. The articulations are here pivots, allowing a rotation of the connecting rod considered relative to the frame 16, to the oscillating body 17 or to another connecting rod to which / to which the articulation connects the relevant connecting rod, in a plane of extension of the connecting rod considered, around an axis substantially normal to the extension plane of the connecting rod.
    Each set of connecting rods 18 comprises in this case four rigid rods 20, 22, 24, 26 which are mounted to pivot relative to the frame 16 and / or to other rods 20, 22, 24, 26 of a same set of connecting rods 18 and / or with respect to the oscillating body 17, around axes parallel to the direction Z normal to the median plane XY of the oscillator 13.
    In the example illustrated, the connecting rods 20, 22, 24, 26 are substantially rectilinear. However, the connecting rods 20, 22, 24, 26 can take any desired shape, accessible to those skilled in the art. In the following, the term “direction of extension” of a connecting rod 20, 22, 24, 26 is understood to mean the direction defined, in the plane of the connecting rod 20, 22, 24, 26 in question, between the two pivot axes. of the two articulations connecting the relevant connecting rod 20, 22, 24, 26 to the frame 16, to the oscillating body 17 or to another connecting rod 20, 22, 24, 26.
    Here, a first link 20 is pivotally mounted around a first axis of rotation A1 relative to the frame 16, in the vicinity of a first end 20a of the first link 20. The first axis of rotation A1 intercepts the plane XY median of oscillator 13 at a point A.
    Furthermore, a second connecting rod 22 is pivotally mounted relative to the frame 16, about an axis A2, in the vicinity of a first end 22a of the second connecting rod 22. The second axis of rotation intercepts the median plane XY of the oscillator at a point B. In the example illustrated, the first and second connecting rods 20, 22 have directions of extension which are collinear, in the same plane parallel to the median plane XY of the oscillator 13.
    A third connecting rod 24 is pivotally mounted about a third axis of rotation A3 relative to the oscillating body 17, in the vicinity of a first end 24a of the third link 24 and in the vicinity of an end 17a of a branches 171 of the oscillating body 17. The third axis of rotation A3 intercepts the median plane XY of the oscillator at a point C.
    A fourth link 26 is pivotally mounted about a fourth axis A4 relative to the oscillating body 17, in the vicinity of a first end 26a of the fourth link 26. The fourth axis of rotation A4 intercepts the median plane XY of oscillator 13 at a point D. Point D is located on segment [OC], in this case substantially in the middle of segment [OC]. In the example illustrated, the third and fourth connecting rods 24, 26 extend in collinear directions, in the same plane parallel to the median plane XY of the oscillator 13. The plane of the first and second connecting rods 20, 22 is thus parallel to the plane of the third and fourth connecting rods 24, 26. The oscillating body 17 here extends in the same plane as the first and second connecting rods 20, 22. Alternatively, however, the oscillating body 17 may extend in a plane parallel to the plane of the first and second connecting rods 20, 22, and in the plane of the third and fourth connecting rods 24, 26.
    The first and fourth connecting rods 20, 26 are pivotally mounted relative to each other, about a fifth axis of rotation A5, in the vicinity of a second end 20b of the first connecting rod 20 and of a second end 26b of the fourth connecting rod 26. The fifth axis of rotation A5 intercepts the median plane of the oscillator 13 at a point E.
    Similarly, the second and third connecting rods 22, 24 are mounted to pivot with respect to each other, about a sixth axis of rotation A6, in the vicinity of a second end 22b of the second connecting rod 22 and a second end 24b of the third connecting rod 24. The sixth axis of rotation A6 intercepts the median plane XY of the oscillator 13 at a point F.
    Finally, the second and fourth connecting rods 22, 26 are mounted to pivot with respect to one another, about a seventh axis of rotation A7. The seventh axis of rotation A7 intercepts the median plane XY of the oscillator 13 at a point G. The point G is here on the segment [BF] and on the segment [ED]. For example, point G can be the midpoint of segments [BF] and [ED].
    As is particularly visible in Figures 3 and 4, we thus define in each set of connecting rods 18, two parallelograms ABGE and GDCF with a vertex G in common, the vertices of these parallelograms ABGE, GDCT corresponding to the intersections of the axes of rotation corresponding to the pivot links, in the median plane XY of the oscillator 13.
    It should be noted here that the segment [BG] of the first parallelogram ABGE and the segment [GF] of the second parallelogram GDCF are linked to the same rigid connecting rod 22 of the same set of connecting rods 18. Likewise, the segment [EG] of the first parallelogram ABGE and the segment [GD] of the second parallelogram GDCF are linked to the same rigid link 26 of the same set of links 18. Thus, the oscillations and deformations of the parallelograms ABGE and GDCF are linked.
    Also, in the same set of connecting rods 18, the line (AB) and the line (CD) are concurrent at the center O of the oscillating body 17. In fact, the lines (AB) of all the sets of connecting rods 18 and the straight lines (CD) of all the sets of connecting rods 18 are concurrent at the center O of the oscillating body 17. The axis of rotation Δ of the oscillating body 17 is thus defined as the axis normal to the median plane XY of the oscillator 13, passing through the point O of intersection of lines (AB) and (CD).
    Here, the oscillator 13 comprises three such sets of connecting rods 18, identical. the sets of pivoting connecting rods are angularly evenly distributed around the axis of rotation of the oscillating body. Such a distribution further improves the robustness of the oscillator 13 with respect to the shocks and accelerations to which it is subjected when the timepiece is worn.
    FIG. 5 illustrates another example of an oscillator 13, in which the connections between the different parts are made by flexible blades 28, substantially planar. In this case, each flexible blade 28 does not induce, a priori, a pure rotation between the elements which it connects. However, it is considered in this case that each flexible blade 28 causes an average movement of the elements that it connects, which corresponds to a rotation around an axis of rotation defined as the intersection of a median plane, in the thickness , of the flexible blade considered and of a median plane, in the length, of the same flexible blade considered. The thickness of each flexible blade 28 being reduced, the axis of rotation which it defines corresponds substantially to the axis connecting the middle of the two longitudinal sides of a main face of the flexible blade considered. By main face is meant here a face whose length corresponds to the length of the flexible blade and whose width corresponds to the width of the flexible blade.
    It is noted that here, the connecting rods 20, 22, 24, 26 of the sets of connecting rods 18 are not rectilinear. On the contrary, here, the shape of these connecting rods is chosen so as to ensure a relative position of the points A, B, C, D, E, F and G so as to form two parallelograms ABGE and GDCF similar to those of figure 1 The points A, B, C, D, E, F and G are not carried by the connecting rods 20, 22, 24, 26 but are located at a distance from these connecting rods 20, 22, 24, 26. Indeed, these points correspond respectively to the intersection of one of the axes of rotation A1-A7 mentioned above, and of the median plane XY of the oscillator 13 of figure 5. Here, each of these axes of rotation A1-A7 corresponds substantially to an axis extending perpendicularly to the median plane XY of the oscillator 13, in a principal extension plane YZ of an associated flexible blade 28, flat, such as the blades are illustrated in FIG. 5.
    The flexible blades 28 make it possible to ensure a movement corresponding essentially to a rotation of the parts assembled together by means of such a flexible blade 28, around an axis substantially normal to the median XY plane of the oscillator 13. It It should be noted here that the flexible blades 28 are oriented such that they allow the oscillator 13, in particular the oscillating body 17, to oscillate in a plane extending substantially in the X and Y directions.
    To do this, each flexible blade 28, or "flexure" advantageously has the largest possible aspect ratio, in particular when the width of the blade extends in a plane substantially perpendicular to the median plane XY of the oscillator. In this case, in fact, a large aspect ratio makes it possible to limit the oscillations of the flexible blade outside the XY plane. It is recalled that the aspect ratio is defined as the ratio between the width and the thickness of the blade. Width is the second largest dimension of the blade, behind its length. The thickness of the blade is the smallest dimension of the blade. Advantageously, each flexible blade 28 has an aspect ratio greater than 10, preferably greater than 25. In addition, at constant width, the increase in the aspect ratio induces a reduction in the thickness of the flexible blade. Flexible blades 28 of reduced thickness are also preferred because they allow oscillation of the oscillating body 17 at a lower natural frequency.
    Preferably, all of the flexible blades 28 are substantially identical.
    Each flexible blade 28 advantageously has a thickness greater than or equal to 1 μm, preferably greater than or equal to 5 μm, and / or less than or equal to 30 μm, preferably less than or equal to 20 μm, preferably less than or equal to 15 µm.
    Each flexible blade 28 may also have a width greater than or equal to 0.1 mm and / or less than or equal to 2 mm, preferably less than or equal to 1 mm.
    Each flexible blade 28 may also have for example a length less than 5 mm, preferably between 0.5 mm and 2 mm.
    Figure 5 illustrates an oscillator 13 in which the connecting rods 20-26 are connected by flexible blades 28 to form the pivot connections between them, between them and the frame 16 and between them and the oscillating member 17. The oscillator 13 of Figure 5 is substantially equivalent to oscillator 13 of Figures 3 and 4, which has three sets of connecting rods 18 such as:<tb> - <SEP> in each set of connecting rods 18, the axes of rotation, as defined above, form two parallelograms ABGE and GDCF,<tb> - <SEP> the segment [BG] of the first parallelogram ABGE and the segment [GF] of the second parallelogram GDCF are linked to the same rigid connecting rod 22, and<tb> - <SEP> the segment [EG] of the first parallelogram ABGE and the segment [GD] of the second parallelogram GDCF are linked to the same rigid connecting rod 26. Thus, the oscillations and the deformations of parallelograms ABGE and GDCF are related.
    Also, the line (AB) and the line (CD) are concurrent at the center O of the oscillating body 17. More precisely, the lines (AB) of all the sets of connecting rods 18 and the lines (CD) of all the sets of connecting rods 18 are concurrent at the center O of the oscillating body 17. The axis of rotation Δ of the oscillating body 17 is thus defined as the axis normal to the median plane XY of the oscillator 13 passing through the point O of intersection of the straight (AB) and (CD).
    As indicated above, the shape of the connecting rods 20, 22, 24, 26 does not matter as long as the position of the various axes of rotation A1-A7 makes it possible to define the two quadrilaterals ABGE and GDCF each having substantially the shape of a parallelogram , to ensure the oscillations of the oscillating body 17 substantially according to a pure rotational movement. This rotational movement is very robust. This ensures the stability of the oscillations of the oscillating body 17.
    The exemplary embodiment of FIG. 5 is particularly interesting because it can be produced by implementing a manufacturing technique of the "pop-up" type, as illustrated by FIGS. 6 to 8. The term “pop-up” type process is understood to mean a process for manufacturing a mechanism comprising:<tb> - <SEP> a superposition of layers (or sheets) of materials, if necessary pre-cut; and<tb> - <SEP> deployment of the multilayer structure thus obtained, preferably in a direction normal to the median plane of the multilayer structure.Such a method makes it possible, by superimposing layers or sheets of reduced thicknesses, to obtain, after deployment, flexible strips of reduced thicknesses in a plane parallel to the median plane XY of the oscillator 13, in particular with respect to the length or at the height of said flexible blades 28.
    FIG. 6 illustrates in particular a first step of such a method, during which the flexible blades 28 are produced and they are positioned so as to be able to easily assemble them then with the connecting rods 20, 22, 24, 26, the frame 16 and the oscillating body 17, by implementing a manufacturing process of the “pop-up” type. This first step can be implemented substantially as described in international application PCT / EP2018 / 060505.
    Thus, Figure 6 shows an assembly 50 of seven separate layers 52, 54, 56, 58, 60, 62, 64 including:<tb> - <SEP> a first layer 52 is made of a first material, preferably rigid;<tb> - <SEP> a second layer 54 is a layer of glue or adhesive material for securing the first layer 52 to a third layer 56;<tb> - <SEP> the third layer 56 of a flexible material. The flexible material can in particular be a polymer film, for example a polyimide. For example, the flexible material can be kapton®;<tb> - <SEP> a fourth layer 58 is a layer of glue or adhesive material to ensure the attachment of the third layer 56 to a fifth layer 58;<tb> - <SEP> the fifth layer 60 is in a second material, preferably rigid, which can advantageously be the same as the first material;<tb> - <SEP> a sixth layer 62 which is a layer of glue or adhesive material to ensure the attachment of the fifth layer 58 to a seventh layer 64;<tb> - <SEP> the seventh layer 64 which may be of a material different from the first and the second material. This seventh layer 64 may alternatively or in addition be thinner than the first and fifth layers 52, 60, in particular in the case where all these layers 52, 60, 64 are made of the same material. It is in this seventh layer 64 that the flexible blades 28 are formed.
    The first and third layers 52, 60 allow the production of sacrificial structures, which can include flexible connections provided by the third layer 56. To do this, different cuts are made in the layers 52-64 in order, in particular, to creating bending initiators and / or breaking initiators. Cutouts made in the seventh layer 64 make it possible to define the flexible blades 28.
    The sacrificial structures can in particular comprise one or more mounting scaffolds - from the English "mounting scaffold" - facilitating or automating the deployment of the assembly 50 in a direction perpendicular to the mean plane of this assembly 50. This or these Assembly scaffold (s) make it possible to connect the various movements necessary for the deployment of the multilayer assembly 50, so that this deployment can be achieved by acting on the assembly with a single degree of freedom.
    Here, by deploying the assembly 50, in a direction normal to the mean plane of the assembly 50, we obtain the various flexible blades 28 necessary for the realization of the pivot connections in the oscillator 13 of Figure 5. Advantageously , as can be seen in FIG. 7, the flexible blades 28 are always assembled together after deployment, so as to maintain their relative positions.
    As indicated above, each flexible blade 28 may advantageously have a thickness greater than or equal to 1 μm, preferably greater than or equal to 5 μm, and / or less than or equal to 30 μm, preferably less than or equal to 20 μm. , preferably less than or equal to 15 μm. Each flexible blade may also have a width greater than or equal to 0.1 mm and / or less than or equal to 2 mm, preferably less than or equal to 1 mm. Each flexible blade 28 may also have, for example, a length less than 5 mm, preferably between 0.5 mm and 2 mm. Each flexible blade can also have an aspect ratio defined as the ratio between the width and the thickness of the blade, greater than 10, preferably greater than 25.
    In addition, advantageously, each flexible blade 28 has a free length greater than or equal to one third of the width of the flexible blade 28. The free length of a flexible blade 28 is the length of the flexible blade 28 between the two attachment points to connecting rods 20-26, to the frame 16 or to the oscillating body 17.
    As visible in Figure 7, once the assembly 50 deployed, we can superimpose two new layers 66, 68 on this assembly 50, including:<tb> - <SEP> a first layer 66 forms the frame, the first 20, third 24 and fourth 26 connecting rods of the different sets of connecting rods 18 of the oscillator 13 and the oscillating body 17; and<tb> - <SEP> a second layer 68 forms the second connecting rods 22 of the various sets of connecting rods 18 of the oscillator 13, these second connecting rods 22 not extending in the same plane as the first, third and fourth connecting rods 20 , 24, 26 of the various sets of connecting rods 18 of the oscillator 13, to allow the oscillations of the oscillating body 17.
    It is then necessary to fix the flexible blades 28 to the various connecting rods 20-26, to the frame 16 and / or to the oscillating body 17 to obtain the assembly 70 of FIG. 8. The oscillator 13 can be obtained from this assembly 70, after its attachments to the various layers have been removed, in particular cut. Links between different connecting rods can also be cut at this stage, links which made it possible to ensure the relative position of the connecting rods in the assembly 70.
    As can be seen in FIGS. 6 to 8, the various layers 52-68 may have holes to receive a guide, making it possible to ensure a relative position of the various superimposed layers 52-68 as precise as possible. In this case, the different layers 52-68 being of substantially rectangular shape, the holes are made in the vicinity of the corners of these layers. One of the holes can be of reduced diameter. This hole then also has a keying function.
    In the two examples described above, the connecting rods 20-26; the frame 16 and / or the oscillating body 17 can in particular be made from one of tungsten, molybdenum, gold, silver, tantalum, platinum, the alloys comprising these elements, a polymer material loaded with particles with a density greater than ten, in particular of tungsten particles, steel, a copper alloy, in particular brass. These materials are indeed heavy. Other materials that can be used are also accessible to those skilled in the art.
    The connecting rods 20-26, the frame 16 and / or the oscillating body 17 can also be made of a material chosen from silicon, glass, sapphire or alumina, diamond, in particular synthetic diamond, in particular synthetic diamond obtained by chemical vapor deposition process, titanium, a titanium alloy, in particular an alloy of the Gum metal ® family and an alloy of the elinvar family, in particular Elinvar ®, Nivarox ®, Thermelast ®, NI-Span-C ® and Precision C ®.
    These materials indeed have the advantage that their Young's modulus is very insensitive to temperature variations. This is particularly advantageous in the horological field, so that the oscillator 13 retains its precision, even in the event of temperature variations.
    Gum metal® are materials comprising: 23% niobium; 0.7% tantalum; 2% zirconium; 1% oxygen; optionally vanadium; and optionally hafnium.
    Elinvar alloys are nickel steel alloys comprising nickel and chromium which are very insensitive to temperatures. Elinvar ®, in particular, is a nickel steel alloy, comprising 59% iron, 36% nickel and 5% chromium.
    NI-Span-C ® comprises between 41.0 and 43.5% nickel and cobalt; between 4.9 and 5.75% chromium; between 2.20 and 2.75% titanium; between 0.30 and 0.80% aluminum; not more than 0.06% carbon; not more than 0.80% manganese; at most 1% silicon; not more than 0.04% sulfur; not more than 0.04% phosphorus; and the supplement 100% iron.
    The Précision C ® comprises: 42% nickel; 5.3% chromium; 2.4% titanium; 0.55% aluminum; 0.50% silicon; 0.40% manganese; 0.02% carbon; and the supplement 100% iron.
    Nivarox ® comprises: between 30 and 40% nickel; between 0.7 and 1.0% beryllium; between 6 and 9% of molybdenum and / or 8% of chromium; optionally, 1% titanium; between 0.7 and 0.8% manganese; between 0.1 and 0.2% silicon; carbon, up to 0.2%; and the iron supplement.
    Thermelast ® comprises: 42.5% nickel; less than 1% silicon; 5.3% chromium; less than 1% aluminum; less than 1% manganese; 2.5% titanium; and 48% iron.
    All of the above compositions are indicated in percentages by weight.
    The process can be continued by providing:<tb> - <SEP> of an energy storage device 8, for example a barrel spring,<tb> - <SEP> of a mechanical transmission 9 driven by the mechanical energy storage device 8,<tb> - <SEP> of a time indicator 7, in particular of two needles 7a, 7b,<tb> - <SEP> of an energy distribution member 10, such as for example an escape wheel,<tb> - <SEP> of an anchor 11 adapted to sequentially retain and release the energy distribution member 10, and by assembling these elements with the oscillator 13 to form a mechanism (or movement) in wherein the oscillator 13 controls the anchor 11 to move it regularly so that the power distribution member is moved step by step at constant time intervals.
    We can also provide a case 2, a winder 4, a dial 5 and a glass 6 intended to cover the dial 5 and make a timepiece by mounting the movement in the case 2, placing the dial 5 in the housing and close housing 2 using glass 6.
    The invention is not limited to the examples described above but is, on the contrary, capable of being the subject of numerous variants accessible to those skilled in the art.
    For example, in the examples described, the sets of connecting rods are all identical. Alternatively, however, the sets of pivoting connecting rods are different. Advantageously, the axes (AB) and (CD) of the different sets of connecting rods are despite everything concurrent at the same point.
    Also, the mechanism for a timepiece including the oscillator 13 may further include:<tb> - <SEP> a second oscillating member resiliently mounted on the frame to oscillate, the first and second oscillating members being connected to each other to always have symmetrical and opposite movements, and<tb> - <SEP> a balancing member which is controlled by the second oscillating member to move in symmetrical and opposite movements to the anchor.
    For example, the second oscillating member is part of an oscillator as illustrated in Figures 3 or 5, shaped so that the second oscillating member oscillates in phase opposition with the oscillating member 17 of the oscillator 13.
    权利要求:
    Claims (17)
    [1]
    1. Oscillator (13) for regulator (12) of mechanism (14) of timepiece (1), comprising:- a frame (16);- an oscillating body (17) about an axis of rotation (Δ);- a plurality of sets of pivoting connecting rods (18), each connecting rod (20-26) extending parallel to a median plane (XY) of the oscillator (13), each assembly of pivoting connecting rods (18) comprising at least first (20), second (22), third (24) and fourth (26) connecting rods such as:- in the vicinity of a first end (20a) of the first connecting rod (20), the first connecting rod (20) is mounted to pivot relative to the frame (16) about a first axis of rotation (A1), the first axis of rotation (A1) intercepting the median plane (XY) of the oscillator (13) at a point A;- in the vicinity of a first end (22a) of the second connecting rod (22), the second connecting rod (22) is mounted to pivot relative to the frame (16) about a second axis of rotation (A2), the second axis of rotation (A2) intercepting the median plane (XY) of the oscillator (13) at a point B;- in the vicinity of a first end (24a) of the third link (24), the third link (24) is mounted to pivot relative to the oscillating body (17) about a third axis of rotation (A3), the third axis of rotation (A3) intercepting the median plane (XY) of the oscillator (13) at a point C;- In the vicinity of a second end (20b) of the first connecting rod (20) and of a second end (26b) of the fourth connecting rod (26), the first and fourth connecting rods (20; 26) are pivotally mounted the one with respect to the other about a fifth axis of rotation (A5), the fifth axis of rotation (A5) intercepting the mid-plane (XY) of the oscillator (13) at a point E;- in the vicinity of a second end (22b) of the second connecting rod (22) and of a second end (24b) of the third connecting rod (24), the second and third connecting rods (22; 24) are pivotally mounted the one with respect to the other about a sixth axis of rotation (A6), the sixth axis of rotation (A6) intercepting the median plane (XY) of the oscillator (13) at a point F;- the second and fourth connecting rods (22; 26) are mounted to pivot with respect to each other, around a seventh axis of rotation (A7), the seventh axis of rotation (A7) intercepting the median plane (XY ) of the oscillator (13) at a point G;- each of the first, second, third, fourth, fifth, sixth and seventh axes of rotation (A1-A7) being substantially normal to the median plane (XY) of the oscillator (13);- the quadrilaterals ABGE and GDCF are parallelograms;- the lines (AB) and (CD) are concurrent at a point O common to all the sets of pivoting connecting rods (18), said common point O corresponding to the intersection of the axis of rotation (Δ) of the member oscillating (17) with the median plane (XY) of the oscillator (13).
    [2]
    2. Oscillator according to claim 1, comprising at least three sets of pivoting links (18).
    [3]
    3. Oscillator according to claim 1 or 2, wherein the sets of pivoting connecting rods (18) are angularly evenly distributed around the axis of rotation (Δ) of the oscillating body (17).
    [4]
    4. Oscillator according to one of claims 1 to 3, wherein the sets of pivoting rods (18) are identical.
    [5]
    5. Oscillator according to any one of claims 1 to 4, wherein the distance OD is substantially equal to the distance DC.
    [6]
    6. Oscillator according to any one of the preceding claims, in which the distance AE is substantially equal to the distance GF.
    [7]
    7. Oscillator according to any one of the preceding claims, in which the points B, G and F are aligned.
    [8]
    8. Oscillator according to any one of the preceding claims, in which the points E, G, D are aligned.
    [9]
    9. Oscillator according to any one of the preceding claims, wherein each connection between the connecting rods (20-26), between the connecting rods (20-26) and the oscillating member (17) and between the connecting rods (20-26) and the frame (16) is formed by means of a flexible blade (28), each flexible blade (28) extending mainly in a plane normal to the mid-plane (XY) of the oscillator (13).
    [10]
    10. Oscillator according to claim 9, produced at least in part by a method of superposition of plane layers and deployment.
    [11]
    11. Oscillator according to any one of the preceding claims, designed to oscillate at a frequency greater than or equal to 4 Hz, preferably greater than or equal to 5 Hz, and / or less than or equal to 50 Hz, preferably less than or equal to 15 Hz.
    [12]
    12. Mechanism for timepiece comprising:- an oscillator (13) according to any one of the preceding claims,- an anchor (11) adapted to cooperate with an energy distribution member (10) and intended to be requested by an energy storage device (8), said anchor (11) being controlled by the oscillator (13) ) to regularly and alternately block and release the energy distribution member (10), so that said energy distribution member (10) moves step by step under the stress of the energy storage device (8) ) in a repetitive motion cycle, and said anchor (11) being adapted to transfer mechanical energy to the oscillator (13) during this repetitive motion cycle.
    [13]
    13. A mechanism for a timepiece according to claim 12, wherein the oscillator (13) further comprises:- a second oscillating member elastically mounted on the frame to oscillate, the first (17) and second oscillating members being interconnected to always have symmetrical and opposite movements, and- a balancing member which is controlled by the second oscillating member to move in symmetrical and opposite movements to the anchor (11).
    [14]
    14. Watch movement (3) comprising a mechanism (14) according to claim 12 or 13 and said energy distribution member (11).
    [15]
    15. Timepiece (1) comprising a watch movement (3) according to claim 14.
    [16]
    16. A method for making an oscillator according to any one of claims 1 to 11, comprising:- the production of blades (28) in flexible material;- the superposition of layers (66; 68) forming the connecting rods (20-26) and / or the oscillating body (17) and / or the frame (16), made of rigid material (s); and- the attachment of the flexible blades (28) to the connecting rods (20-26), to the oscillating body (17) and to the frame (16), if applicable.
    [17]
    17. The method of claim 16, wherein the flexible blades (28) are produced by superimposing layers (52-64) of which at least one (56) is flexible with respect to the others, and by deploying the flexible blades (28). so that each of these extends mainly in a plane perpendicular to the plane of the layers (52-64).
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    同族专利:
    公开号 | 公开日
    FR3093193B1|2021-03-19|
    FR3093193A1|2020-08-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR3048791B1|2016-03-14|2018-05-18|Lvmh Swiss Manufactures Sa|MECHANISM FOR A WATCHING PART AND A WATCHPIECE COMPRISING SUCH A MECHANISM|
    FR3059792B1|2016-12-01|2019-05-24|Lvmh Swiss Manufactures Sa|DEVICE FOR WATCHMAKING PART, CLOCK MOVEMENT AND TIMEPIECE COMPRISING SUCH A DEVICE|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR1901854A|FR3093193B1|2019-02-22|2019-02-22|OSCILLATOR FOR WATCH PART MECHANISM|
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