CH716434A2 - Pivoting guide device and clockwork resonator mechanism for a pivoting mass. - Google Patents

Abstract

A device for guiding (58, 59) in rotary pivoting of a pivoting mass around a virtual pivot axis comprises a first support and a second support, one of which is fixed and the other is intended to be rotatable and which forms or supports the pivoting mass, the device being arranged substantially in a plane and comprising a first (39, 43) and a second (41, 44) flexible blade oriented in the same direction when the device (58, 59) is at rest, as well as an intermediate blade (42, 45) of significantly greater rigidity than the flexible blades (39, 43, 41, 44) and connecting the first flexible blade to the second. The device comprises a first fixed link (47, 52) formed by the first support and a first end of the first blade (39, 43), a second fixed link (48, 53) formed by a second end of the first blade (39, 43) and a first end of the intermediate strip (42, 45), a third fixed connection (49, 54) formed from a second end of the intermediate strip (42, 45) and a first end of the second blade (41, 44) and a fourth fixed link (51, 55) formed from at least a second end of the second blade (41, 44), characterized in that the first (47, 52) and / or the fourth connection (51, 55) is arranged substantially between the second (48, 53) and the third connection (49, 54) on said direction when the device (58, 59) is at rest. The invention also relates to a clockwork resonator mechanism (20) comprising a pivoting mass and two of said guide devices (58, 59).

Description

Description

Field of the invention

The invention relates to a pivoting guide device for a pivoting mass.

The invention also relates to a clockwork resonator mechanism comprising at least two pivoting guide devices.

The invention also relates to a clock movement comprising such a resonator mechanism.

Background of the invention

[0004] Flexible guides with a virtual pivot make it possible to substantially improve horological resonators. The simplest are cross-leaved pivots, consisting of two straight-leaved guiding devices which intersect, usually perpendicularly. These two blades can be either three-dimensional in two different planes, or two-dimensional in the same plane and are then as if welded at their crossing point.

[0005] It is possible to optimize a three-dimensional cross-leaf pivot for an oscillator, to try to make it isochronous with a march independent of its Orientation in the field of gravity, in particular in two ways (independently, or both together ):

- choose the Position of the crossing of the slats in relation to their embedding to have a march independent of the positions;

- choose the angle between the blades to be isochronous, and to have a step independent of the amplitude.

[0006] However, the use of such devices does not make it possible to achieve perfect bending of the blades. Indeed, it is not possible to obtain a sufficiently stable virtual axis during pivoting for the rotary movement of the mass to be perfectly periodic. The restoring torque is not entirely linear, which generates an anisochronism depending on the amplitude of the mass. In addition, the center of mass of the mechanism moves too much, and also causes an anisochronism due to its orientation with respect to gravity.

Summary of the invention

[0007] The invention seeks to avoid the aforementioned defects and aims to improve the behavior of flexible pivots, in particular for their use in a resonator mechanism.

[0008] The invention thus relates to a device for guiding a pivoting mass in rotary pivoting about a virtual pivot axis, the device comprising a first support and a second support, one of which is fixed and the other is intended to be rotatable and to form or to support the pivoting mass, the device being substantially arranged in a plane and comprising a first and a second flexible blade oriented in the same direction when the device is at rest, as well as an intermediate blade of notably greater rigidity to the flexible strips and connecting the first flexible strip to the second, the device comprising a first fixed connection formed by the first support and a first end of the first strip, a second fixed connection formed from a second end of the first strip and from a first end of the intermediate blade, a third fixed link formed from a second end of the intermediate blade and a first end of the second blade and a fourth fixed link formed from at least a second end of the second blade .

The device is remarkable in that the first and/or the fourth link is arranged substantially between the second and the third link in said direction when the device is at rest.

[0010] Thus, the invention is a pivot with flexible blades comprising an intermediate blade of greater rigidity than the flexible blades and of which the first and/or the fourth fixed connection is arranged between the second and the third fixed connection. Such a pivot makes it possible to keep a more stable center of mass during the pivoting of the mass, so that the flexibility and the restoring torque are more linear. The problems of anisochronism due to gravity are also greatly reduced, in particular in a resonator mechanism, so that the mechanical watch movements are more precise.

According to a particular embodiment of the invention, the fourth fixed connection is arranged between the second end of the second blade and the second support, which is rotatable, the first support being fixed.

According to a particular embodiment of the invention, the fourth connection is arranged between the second and the third connection on said direction when the device is at rest.

According to a particular embodiment of the invention, the first and the fourth connection are arranged between the second and the third connection on said direction when the device is at rest.

According to a particular embodiment of the invention, the intermediate blade is bent, preferably U-shaped.

[0015] According to a particular embodiment of the invention, the intermediate blade is flexible with an inertia of section greater than those of the flexible blades.

According to a particular embodiment of the invention, the intermediate blade has a length Xt defined by the following equation:

= ^+3^lt2l+3L1Li|L2|4-/4 .

1 6Z.ilZ.2l '

where Lt is the length of the first flexible blade and L2 is the length of the second flexible blade.

According to a particular embodiment of the invention, the distance between the fourth link and the center of mass of the pivoting mass is a length x2 defined by the following equation:

_Z.]-3L1Z.2|Z.2|-2Z.| .

2 6|L2|(L1+|I,2|) ’

where Lt is the length of the first flexible blade and L2 is the length of the second flexible blade.

According to a particular embodiment of the invention, the length of the first blade = L, and the intermediate blade has a length X! defined by the following equation: =

According to a particular embodiment of the invention, the length Lt of the first blade Lt = L, and the distance between the fourth link and the center of mass of the pivoting mass is a length x2 defined by the equation following: =(1

According to a particular embodiment of the invention, the second flexible blade has a length l_2 defined by the following equation: = |

According to a particular embodiment of the invention, the device comprises a second intermediate blade, the fourth link being formed from the second end of the second blade and from a first end of the second intermediate blade, the first support being rotary.

According to a particular embodiment of the invention, the device comprises a third flexible blade between the second intermediate blade and the second fixed support, the device comprising a fifth fixed connection forms a second end of the second intermediate blade and a first end of the third strip, as well as a sixth fixed connection formed from at least a second end of the third strip.

According to a particular embodiment of the invention, the sixth fixed connection is formed by the second end of the third blade and the second fixed support.

According to a particular embodiment of the invention, the fifth and the sixth connection are arranged between the second and the third connection on said direction when the device is at rest.

[0025] The invention also relates to a clock resonator mechanism comprising a pivoting mass arranged to pivot rotatably about a virtual pivot axis, the mechanism comprising two flexible guide devices in rotary pivoting according to the invention.

According to a particular embodiment of the invention, the directions of the flexible blades of the respective devices are substantially perpendicular to each other when the mechanism is at rest.

According to a particular embodiment of the invention, the mechanism comprises a third guide device, the three devices being superimposed.

According to a particular embodiment of the invention, the devices are distributed angularly, so that the directions of the flexible blades of the three guide devices are arranged at 120° two by two.

According to a particular embodiment of the invention, the rotary supports of the devices are integral.

According to a particular embodiment of the invention, the fixed supports of the devices are integral.

[0031] According to a particular embodiment of the invention, the flexible blades of each device are of the same length in pairs.

According to a particular embodiment of the invention, the devices are arranged on parallel planes.

[0033] The invention also relates to a clockwork movement comprising such a clockwork resonator mechanism.

Brief description of the drawings

[0034] Other characteristics and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, where:

- Figure 1 shows, schematically, a pivoting guide device according to the invention,

- Figure 2 shows, schematically, a resonator mechanism comprising two pivoting guiding devices according to a first embodiment of the invention,

- Figure 3 shows a top view of a resonator mechanism according to a first variant of a second embodiment,

- Figure 4 shows a top view of a resonator mechanism seien a second variant of the second embodiment,

- Figure 5 shows a top view of a resonator mechanism according to a third variant of the second embodiment,

- Figure 6 shows a perspective view of the third variant of the second embodiment of Figure 5,

- Figure 7 shows a perspective view of an improved version of the resonator mechanism of Figure 3,

- Figure 8 shows a perspective view of a resonator mechanism according to a third embodiment,

- Figure 9 shows a perspective view of a resonator mechanism according to a fourth embodiment,

- Figure 10 shows a top view of the resonator mechanism according to the fourth embodiment.

Detailed description

The invention relates to a guide device 1 in rotary pivoting of a pivoting mass about a virtual pivot axis A, as shown in Figure 1. The device is preferably arranged substantially in one plane. The pivot axis A is perpendicular to the plane of the device 1. The device 1 comprises a fixed support 2 and a rotating support 3 intended to form or support the pivoting mass.

[0036] The device 1 comprises a first 4 and a second flexible blade 5 as well as an intermediate blade 6 connecting the first flexible blade 4 to the second 5. The first 4 and the second blade 5 preferably have an inertia of similar section , or even identical. The invention is illustrated in a particular preferred case where the most flexible blades are straight. Other geometries are nevertheless possible, for example in the form of a Serpentine, or others.

The intermediate blade 6 has a significantly greater rigidity than the flexible blades 4, 5. In other words, the intermediate blade 6 has a greater stiffness coefficient than the flexible blades.

[0038] According to a first embodiment, the coefficient of the intermediate blade 6 is much greater, so that the intermediate blade 6 is considered not to be flexible under the effect of the pivoting mass.

[0039] According to a second embodiment, the intermediate blade 6 is also flexible, but less than the first

4 and the second blade 5. In this case, the difference in flexibility between the two types of blades is still noticeable. Thus, the intermediate blade 6 is flexible under the effect of the pivoting mass. To this end, the intermediate blade 6 has, for example, a larger section than the flexible blades 4, 5 if they are made of the same material. Preferably, the first 4 and the second flexible strip 5 have an identical section.

[0040] Figure 1 shows the device 1 at rest, that is to say that the rotary support 3 does not pivot and remains in a stationary stable position. As shown in Figure 1, the first 4 and the second blade 5 are oriented in the same direction when the device 1 is at rest.

The device 1 comprises four fixed links of the blades 4, 5, 6:

- a first fixed link 7 formed by the fixed support 2 and a first end of the first blade 4,

- a second fixed link 8 formed by a second end of the first blade 4 and a first end of the intermediate blade 6,

- a third fixed connection 9 formed by a second end of the intermediate strip 6 and a first end of the second strip 5, and

- a fourth fixed link 11 formed by a second end of the second blade 5 and the rotary support 3.

[0042] The term fixed connection means that the ends are permanently fixed to one another, for example one end being rigidly embedded in the other.

In the rest position, the first blade 4 is substantially perpendicular to the fixed support 2, and the second blade

5 is substantially collinear with the first blade 4, while the intermediate blade 6 is substantially parallel to the first 4 and second 5 blades. Thus, the four fixed connections are aligned in the same direction of the flexible blades 4, 5 in the rest position. In Figure 1, the rotary support 3 has an L shape to offset the support 3 relative to the flexible blades 4, 5. The base of the L is perpendicular to the flexible blades 4, 5, and includes the fourth fixed connection 11. The back of the L is parallel to the flexible blades 4, 5, and is further provided with a curved free tip P. The free tip P is only intended to indicate the location of the center of mass of the device 1. Thanks to the device according to the invention, the free tip P, and therefore the center of mass, moves very little during the pivoting of the support 3 .

According to the invention, the first 7 and / or the fourth fixed link 11 is arranged between the second 8 and the third fixed link 9, when the device 1 is at rest. In the embodiment of Figure 1, the first 7 and the fourth fixed link 11 are arranged between the second 8 and the third fixed link 9, when the device 1 is at rest. Thus, the first 4 and the second 5 flexible blade are arranged in the intermediate blade 6 in the rest position.

To this end, the intermediate blade 6 is bent, here in the shape of a right U, in order to be able to partially surround the first 7 and the fourth fixed link 11. The base B of the U is the longest and has a length X ! defined by the following equation:

_ L31+3Z21|L2| + 3L1L2|L2|+4 .

1 6Z.ilZ.2l 1

Yes-! is the length of the first flexible blade 4 and L2 is the length of the second flexible blade 5. The lengths are vectors defined with respect to axes and an origin, not shown in the figures. It is understood that the negative values are oriented in the opposite direction of the positive values. Thus, some values may be negative, such as Lt or L2, and therefore Xt or x2.

Furthermore, the distance between the fourth fixed link 11 and the center of mass of the pivoting mass is a length x2 formed by the back of the L and defined by the following equation:

= ^-3t-1L2ltz|-24

2 ßltzKM+H-zl)

[0047] Thanks to these dimensions, the center of mass of the System is more stable when the device pivots, because the center of mass of the pivoting mass is immobile up to the second order of the limit development of the position of the center of mass. with respect to the bending angle in the plane of the device 1.

In a preferred mode, we choose a length L, = Lde the first blade 4, and a length '. -fde the second flexible blade 5. Thus, the flexible blades 4, 5 are not likely to collide during pivoting. One avoids having to arrange the blades on two different levels to avoid shocks. Therefore, the length X! of the intermediate blade 6 is defined by the following equation: <-i=-g'. and the rotary support 3 has a length x2 defined by the following equation: x2=;L, which corresponds to the distance between the fourth fixed link 11 and the center of mass of the pivoting mass.

In an advantageous embodiment, the first fixed support 11, the second fixed support 12, and the blades form a one-piece assembly. This one-piece assembly can be produced by technologies of the "MEMS" or "LIGA" type or similar, in silicon or similar, thermally compensated, in particular by a particular local growth of silicon dioxide, in certain zones of the part arranged for this purpose. , when this one-piece assembly is made of silicon.

[0050] According to a third embodiment, not shown in the figures, the device comprises a second intermediate blade and a third flexible blade, the rotating and fixed supports being reversed with respect to the previous embodiments. Thus, the first fixed link is formed by the rotary support and the first end of the first flexible blade, the second fixed link is formed by the second end of the first flexible blade and the first end of the first intermediate blade, the third link fixed is formed by the second end of the first intermediate blade and the first end of the second flexible blade, while the fourth fixed connection is formed by the second end of the second flexible blade and by a first end of the second intermediate blade. The device comprises a fifth fixed connection formed by a second end of the second intermediate strip and a first end of the third flexible strip, as well as a sixth fixed connection formed by the second end of the third flexible strip and the fixed support. In this embodiment, the first, fourth, fifth and sixth fixed links are for example arranged between the second and the third fixed link, when the device is at rest.

[0051] FIG. 2 shows a first embodiment of a resonator mechanism 10 comprising two pivoting guide devices 12, 21 similar to that described above. The first guide device 12 comprises a first fixed support 14 and a first rotary support 33, a first 16 and a second 17 flexible blade, as well as a first intermediate blade 31 connecting the first flexible blade 16 to the second 17. The second guide device 21 comprises a second fixed support 13 and a second rotary support 34, a third 18 and a fourth 19 flexible blade, as well as a second intermediate blade 32 connecting the third flexible blade 18 to the fourth 19. The flexible blades 16 , 17, 18, 19 of the two devices 12, 21 are of the same length in pairs. Thus, the first blade 16 of the first device 12 and the third blade 18 of the second device 21 are of the same length, just as the second blade 17 of the first device 12 and the fourth blade 19 of the second device 21 are of the same length. The intermediate blades 42, 45 are arranged so that the bases of the U are oriented towards the outside of the mechanism.

The two devices 12, 21 are arranged on two parallel planes to be able to pivot without clashing of the blades. In this example, the two devices 12, 21 are substantially perpendicular Tun with respect to each other. Thus, the directions of the flexible blades 16, 17, 18, 19 of the respective devices 12, 21 are substantially perpendicular when the mechanism 10 is at rest.

[0053] In other embodiments, the devices can be oriented differently, by forming an angle different from 90° between them, for example from 60°.

[0054] In addition, the directions of the flexible blades are straight. The intermediate blades 31, 32 of the two devices 12, 21 are substantially perpendicular in the rest position, and intersect at a first point 35. As the devices 12,21 are on two different planes, the blades do not collide during the operation of the mechanism 10. The first 16 and the third 18 flexible blade are substantially perpendicular in the rest position, and intersect at a second point 36 defining the center of mass of the rotary support and of the pivoting mass. The second point 36 also defines the virtual axis position around which the rotation of the mechanism occurs, in particular for the pivoting mass. The pivot axis is substantially perpendicular to the planes of the devices.

The rotary supports 33, 34 of the two devices are integral with each other, as are the fixed supports 22, 23 of the two devices 12, 21. The rotary supports 33, 34 here have the shape of a straight blade, which can be of the same nature as the intermediate blades, preferably not flexible. The rotary supports 33, 34 are substantially perpendicular

to the flexible blades 16, 17, 18, 19 of the respective devices 12, 21. The Rotating Supports 33, 34 are fixed one to the other by their opposite ends in order to form a corner 15 in the form of a square. The wedge 15 can form a support for an oscillating mass of the mechanism, a pendulum for example.

When the mechanism 10 is activated, the two devices 12, 21 pivot, so that the corner 15 performs a periodic pendulum movement around the virtual fax. The movement is produced thanks to the flexible blades which bend under the effect of the movement of the Rotating Supports with or without the mass.

The resonator mechanism 10 may comprise a plurality of such flexible pivoting guide devices 12, 21 mounted in series, to increase the total angular stroke, arranged in parallel planes, and around the same virtual pivot axis A.

[0058] Figures 3 to 6 are variants of a second embodiment of a mechanism 20, 30, 40 comprising two devices 58, 59 according to the invention, and in which only the fourth fixed link 51, 55 is arranged between the second 48, 53 and the third fixed link 49, 54 in the rest position. The devices 58, 59 each comprise two flexible blades 39, 41, 43, 44 and an intermediate blade 42, 45. As in the first embodiment, the devices 58, 59 are substantially perpendicular Tun relative to the other.

In each of them, the first fixed link 47, 52 is arranged outside the intermediate blade 42, 45. Thus, the first flexible blade 39, 43 is outside the intermediate blade 42, 45.

Thus, the mechanism is more compact than that of the first embodiment. The intermediate blades 42, 45 have a deformed U-shape, in which the branch linked to the first flexible blade 39, 43 by the first fixed link 48, 53 is slightly convex and longer than the other, the base of the U being concave towards the inside of the U. The fixed supports are identical in the different variants, and together form a first arc of a circle 37 with an angle substantially equal to 90°. The first arc comprises 37 a first attachment 46, here a ring arranged on the exterior part of the arc 37 in the plane of the device, in order to be able to fix the resonator mechanism to a watch movement.

In the variants of Figures 3 and 4, the two rotary supports together form a second arc of a circle 38 smaller than the first, with an angle substantially equal to 90°, the center of which is substantially the same as that of the first. arc 37. The first 37 and the second arc 38 are substantially parallel in the rest position. A second clip 56 is attached to the second arc 38. The second clip 56 is a ring. The second attachment 56 makes it possible to fix an oscillating mass, for example a watch movement balance wheel.

[0062] The ring forming the second attachment 56 of FIG. 3 is offset with respect to the mechanism 20 and is connected by an additional strip 57, which can also be flexible, to one end of the second arc 38.

In Figure 4 of the other variant, the second fastener 56 is fixed and centered on the second circular arc 38.

In the variant of Figures 5 and 6 of the resonator mechanism 40, the devices 61, 62 are arranged so that the base of the U of the intermediate blades 66, 67 are oriented towards the inside of the mechanism, by symmetry of the intermediate blades previous variants with respect to the direction of the flexible blades 39, 41, 43, 44. The Rotating Supports 63, 64 are curved, and intersect in different planes before joining the second attachment 65. The second attachment 65 is arranged symmetrically opposite the first attachment 46 with respect to the center of mass of the mechanism formed at the intersection of the second flexible blades 41,44. The perspective view of FIG. 6 makes it possible to observe the two levels of two devices 61, 62. It is noted that the first arc 37 forms fixed supports, as well as the second attachment 65 have a sufficient thickness to allow the fixed connections in the two different planes.

[0065] Whatever the variant, when the mechanism 20, 30, 40 is activated, the two devices pivot, so that the attachment performs a periodic pendulum movement around the virtual tax. The movement is produced thanks to the flexible blades which bend under the effect of the movement of the Rotating Supports with or without the mass.

[0066] Figure 7 shows a resonator mechanism 50 similar to that of Figure 3, in which the flexible blades 72,

73, 74, 75 comprise lateral reinforcements 71 to avoid the anticlastic curvature of the blade. The reinforcements consist of ribs arranged on either side of the blade to punctually increase the thickness of the blade 72, 73,

74, 75. The ribs are arranged periodically on each face of the blade, preferably arranged over the entire height of the blade 72, 73, 74, 75.

In this embodiment, the intermediate blades 76, 77 also have a honeycomb structure in the thickness of the blade. The cells are tubular over the entire height of the blade to obtain “skeletonized” blades. Thus, the weight of the intermediate blades 76, 77 is reduced while maintaining sufficient rigidity.

[0068] Embodiments comprising only one of these two additional characteristics are obviously possible.

[0069] Figure 8 shows a third embodiment of a resonator mechanism 60 comprising two guide devices 81, 82 each having three flexible blades 83, 84, 85, 86, 87, 88, and two intermediate blades 89, 91 , 92, 93 according to the third embodiment of the pivoting guide device 81,82 described above. The two devices 81,82 are arranged perpendicularly and intersect at the level of the second intermediate blades 92, 93. The second intermediate blades 92, 93 describe a setback so as not to be in contact with each other. For this, they have a U shape, which can fit perpendicularly Tun in the other without touching. The first

Claims (21)

intermediate blades 89, 91, also have a U-shape, the length of which corresponds to that of their own device 81,82. The length of each second flexible blade 85, 86 substantially corresponds to the added length of the first 83, 84, and the third intermediate blade 87, 88 of their respective device 81, 82. The flexible blades 83, 84, 85, 86, 87, 88, the second intermediate blades 92, 93, the rotating and fixed supports of the two devices 81,82 are arranged in the same plane. The first intermediate blades 89, 91 are arranged in a second plane parallel to the first. [0071] The rotating supports of the devices 81, 82 are integral and form an arc of circle 94. The fixed supports of each device 81, 82 are also integral with each other so as to form a corner 95 in the arc of a circle. 94. The circular arc 94 can move relative to the corner 95, when the mechanism is in motion. For each device 81, 82 in rest position, the first, fourth, fifth and sixth fixed links are arranged between the second 96, 97 and the third fixed link 98, 99. Figures 9 and 10 show a fourth embodiment of a resonator mechanism 100 comprising three guide devices 101, 102, 103, distributed angularly around an axis of symmetry A of the mechanism. The devices 101, 102, 103 are superposed and oriented so as to form an angle of 120° between them. Thus, the directions of the flexible blades of the three guide devices 101, 102, 103 are arranged at 120° two by two. The axis of symmetry A passes substantially through the second flexible blades 105, 106, 107 of each device 101, 102, 103 when the mechanism is at rest. The center of mass of the pivoting mass is defined by the axis of symmetry, which is the crossing point of the second flexible strips 105, 106, 107. The guide devices 101, 102, 103 are of the type described for the second mode. embodiment of the resonator mechanism of FIGS. 3 and 4, with the exception of supports 108, 109. As for the devices of Figures 3 and 4, the rotary supports 109 comprise first arcs 111, 112, 113. The rotary supports 109 further comprise second circular arcs 114, 115, 116 superimposed whose are different to reach respective first arcs 111, 112, 113 of each device 101, 102, 103. second arcs 114, 115, 116 are integral and are extended by a first attachment 120 directed towards the outside of the mechanism 100. The fixed supports 108 comprise third arcs 121, 122, 123 superimposed of different lengths depending on the arrangement of the devices 101, 102, 103. a second attachment 125. The second 114, 115, 116 and the third circular arcs 121, 122, 123 define a circular space inside which the elements of the devices 101, 102, 103 are arranged, except for the fasteners 120, 125. The first 120 and the second clip 125 are preferably arranged symmetrically on either side of this space. The invention also relates to a clock movement comprising a resonator mechanism such as one of those described above, for example for a pendulum of the clock movement. Claims 1. Guide device (1, 12, 21, 58, 59, 61, 62, 81, 82) in rotary pivoting of a pivoting mass about a virtual pivot axis (A), the device (1, 12 , 21, 58, 59, 61, 62, 81, 82) comprising a first support (2, 13, 14) and a second support (3, 33, 34), one of which is fixed and the other is intended to be rotating and forming or supporting the pivoting mass, the device (1, 12, 21,58, 59, 61,62, 81,82) being substantially arranged in one plane and comprising a first (4, 16, 18, 39 , 43, 72, 73, 83, 84) and a second (5, 17, 19, 41, 44, 74, 75, 85, 86) flexible blade oriented in the same direction when the device (1, 12, 21, 58, 59, 61, 62, 81, 82) is at rest, as well as an intermediate blade (6, 31, 32, 42, 45, 66, 67, 76, 77) of notably greater rigidity than the flexible blades (4 , 16, 18, 39, 43, 72, 73, 83, 84, 5, 17, 19, 41,44, 74, 75, 85, 86) and connecting the first flexible strip (4, 16, 18, 39, 43, 72, 73, 83, 84) at the second (5,17,19,41,44, 74, 75, 85, 86), the device (1, 12, 21,58, 59, 61,62, 81,82) comprising a first fixed connection (7, 22, 23, 47, 52) formed by the first support (2, 13, 14) and a first end of the first blade (4, 16, 18, 39, 43 , 72, 73, 83, 84), a second fixed link (8, 24, 25, 48, 53, 96, 97) formed from a second end of the first blade (4, 16, 18, 39, 43, 72, 73, 83, 84) and a first end of the intermediate blade (6, 31, 32, 42, 45, 66, 67, 76, 77), a third fixed connection (9, 26, 27, 49 , 54, 98, 99) formed of a second end of the intermediate blade (6, 31, 32, 42, 45, 66, 67, 76, 77) and a first end of the second blade (5, 17 , 19, 41,44, 74, 75, 85, 86) and a fourth fixed link (11,28, 29, 51,55) formed from at least a second end of the second blade (5, 17, 19, 41,44, 74, 75, 85, 86), characterized in that the first (7, 22, 23, 47, 52) and/or the fourth connection (11,28, 29, 51,55) is arranged substantially between the second (8, 24, 25, 48, 53, 96, 97) and the third link (9, 26, 27, 49, 54, 98, 99) on said direction when the device (1, 12, 21, 58, 59, 61, 62, 81,82) is at rest. 2. Device according to one of the preceding claims, characterized in that the intermediate blade (6, 31,32, 42, 45, 66, 67, 76, 77) is bent, preferably U-shaped. 3. Device according to one of the preceding claims, characterized in that the intermediate blade (6, 31, 32, 42, 45, 66, 67, 76, 77) is flexible with an inertia of section greater than those of the flexible blades (4, 16, 18, 39, 43, 72, 73, 83, 84, 5, 17, 19, 41,44, 74, 75, 85, 86). 4. Device according to one of the preceding claims, characterized in that the intermediate blade (6, 31,32, 42, 45, 66, 67, 76, 77) has a length! defined by the following equation: _ Ll+3LllL2l+3L1L2lL2l+L32 . 1 6L1|£2| ' Yes-! is the length of the first flexible blade (4, 16, 18, 39, 43, 72, 73, 83, 84) and L2 is the length of the second flexible blade (5, 17, 19, 41,44, 74, 75 , 85, 86). 5. Device according to one of the preceding claims, characterized in that the distance between the fourth fixed link (11,28, 29, 51,55) and the center of mass of the pivoting mass is a length x2 defined by the following equation: 2 1 Yes-! is the length of the first flexible blade (4, 16, 18, 39, 43, 72, 73, 83, 84) and L2 is the length of the second flexible blade (5, 17, 19, 41,44, 74, 75 , 85, 86) . 6. Device according to one of the preceding claims, characterized in that the length of the first blade (4, 16, 18, 39, 43, 72, 73, 83, 84) = L, and the intermediate blade (6, 31,32, 42, 45, 66, 67, 76, 77) has length X! defined by the following equation: 7. Device according to one of the preceding claims, characterized in that the length of the first blade (4, 16, 18, 39, 43, 72, 73, 83, 84) = L, and the distance between the fourth bond (11,28, 29, 51, 55) and the center of mass of the pivoting mass is a length x2 defined by the following equation: ^=|i. 8. Device according to one of the preceding claims, characterized in that the second flexible strip (5, 17, 19, 41, 44, 74, 75, 85, 86) has a length l_2 defined by the following equation: 9. Device according to one of the preceding claims, characterized in that the fourth fixed link (11,28, 29, 51, 55) is formed from the second end of the second blade (5, 17, 19, 41, 44 , 74, 75, 85, 86) and the second support (3, 33, 34), which is rotatable, the first support (2, 13, 14) being fixed. 10. Device according to one of claims 1 to 8, characterized in that the device (81, 82) comprises a second intermediate blade (92, 93), the fourth connection being formed from the second end of the second blade (85 , 86) and a first end of the second intermediate blade (92, 93), the first support being rotatable. 11. Device according to claim 10, characterized in that the device (81,82) comprises a third flexible blade (87, 88) between the second intermediate blade (92, 93) and the second fixed support, the device (81, 82) comprising a fifth fixed link formed of a second end of the second intermediate blade (92, 93) and a first end of the third blade (87, 88), as well as a sixth fixed link formed of at minus a second end of the third blade (87, 88). 12. Device according to claim 11, characterized in that the sixth fixed connection is formed by the second end of the third blade (87, 88) and the and the second support. 13. Device according to claim 11 or 12, characterized in that the fifth and the sixth connection are arranged between the second (96, 97) and the third connection (98, 99) on said direction when the device (81,82) is at rest. 14. Clockwork resonator mechanism (10, 20, 30, 40, 50, 60, 100) comprising a pivoting mass arranged to pivot rotatably about a virtual pivot axis, characterized in that it comprises two devices guide (12, 21,58, 59, 61, 62, 81, 82, 101, 102) in rotary pivoting according to one of the preceding claims. 15. Clockwork resonator mechanism according to claim 14, characterized in that the directions of the flexible blades (16, 18, 39, 43, 72, 73, 83, 84, 17, 19, 41, 44, 74, 75, 85, 86, 105, 106) of the respective devices (12, 21, 58, 59, 61, 62, 81, 82, 101, 102) are substantially perpendicular to each other when the mechanism (10, 20, 30, 40, 50, 60, 100) is idle. 16. Clockwork resonator mechanism according to claim 14, characterized in that it comprises a third guide device (103), the three devices (101, 102, 103) being superposed. 17. Clockwork resonator mechanism according to claim 16, characterized in that the devices (101, 102, 103) are distributed angularly, so that the directions of the flexible blades (105, 106, 107) of the three guide devices ( 101, 102, 103) are arranged at 120° two by two. 18. Clockwork resonator mechanism according to one of claims 14 to 17, characterized in that the rotary supports (33, 34, 109) of the devices (12, 21,58, 59,61,62,81,82, 101, 102, 103) are integral. 19. Clockwork resonator mechanism according to one of claims 14 to 18, characterized in that the fixed supports (13, 14, 108) of the devices (12, 21,58, 59,61,62,81,82, 101, 102, 103) are integral. 20. Clock resonator mechanism according to one of claims 14 to 19, characterized in that the flexible blades (16, 18, 39, 43, 72, 73, 83, 84, 17, 19, 41,44, 74 , 75, 85, 86, 105, 106, 107) of each device (12, 21, 58, 59, 61, 62, 81, 82, 101, 102, 103) are of the same length in pairs. 21. Clockwork movement (100) comprising a clockwork resonator mechanism (10, 20, 30, 40, 50, 60, 100) according to one of claims 14 to 20.