阅读说明：本技术 钟表驱动机构 (Clock driving mechanism ) 是由 J·比勒 E·布歇 于 2019-07-24 设计创作，主要内容包括：本发明涉及一种钟表驱动机构(100),其包括结构(110),承受第一能量源(12)的复位转矩的臂(1)在该结构上枢转,该臂(1)承载包括轮(11)的行星齿轮(10),第二能量源(22)使第三轮副(3)受到恢复转矩,轮(11)在第一能量源(12)的作用下在第三轮副(3)上滚动,结构(110)承载与第三轮副(3)的互补止动装置(123)配合的止动装置(120)以将第三轮副保持就位,在臂(1)的向前角度行程结束时,止动装置(120)可在臂(1)的脱离控制装置(13)的作用下脱开,以允许第三轮副(3)在第二能量源(22)的作用下沿单一方向枢转,从而使臂(1)向后旋转到其角度行程的初始位置。(The invention concerns a timepiece drive mechanism (100) comprising a structure (110) on which an arm (1) subjected to a return torque of a first energy source (12) pivots, the arm (1) carries a planetary gear (10) comprising a wheel (11), the second energy source (22) subjects the third wheel set (3) to a restoring torque, the wheel (11) rolls on the third wheel set (3) under the action of the first energy source (12), the structure (110) carries a stop means (120) cooperating with a complementary stop means (123) of the third wheel set (3) to hold it in position, at the end of the forward angular travel of the arm (1), the stop means (120) can be disengaged by the disengagement control means (13) of the arm (1), to allow the third wheel set (3) to pivot in a single direction under the action of the second energy source (22) to rotate the arm (1) backwards to its initial position of angular travel.)

1. A drive mechanism (100) for a timepiece, the drive mechanism (100) comprising a fixed structure (110) on which an arm (1) is pivotably mounted about a main axis (D0), the arm carrying a planetary gear (10), the planetary gear (10) being pivotably mounted on the arm (1) about a first pivot axis (D1) remote from the main axis (D0), the planetary gear (10) comprising a first wheel (11) pivotably mounted about the first pivot axis (D1) or a second pivot axis parallel to the first pivot axis (D1), the arm (1) being subjected to a return torque of a first energy source (12), the drive mechanism (100) further comprising at least one second energy source (22) arranged such that a third wheel set (3) comprised in the drive mechanism (100) is subjected to the return torque directly or indirectly via a second wheel set (2), -said second wheel set (2) is pivotably mounted about a second pivot axis (D2), said first wheel (11) being arranged to roll on said third wheel set (3) under the action of said first energy source (12) with a regular forward rolling motion in a single direction of rotation with respect to said fixed structure (110), characterized in that said third wheel set (3) is arranged to remain in a fixed position during a first elementary stroke of said planetary gear (10) and to rotate in only one direction under the action of said second energy source (22) during a second elementary stroke of said planetary gear (10), during which said arm (1) carried by said third wheel set (3) moves backwards with respect to said fixed structure (110); and in that the drive mechanism (100) comprises stop means (120) arranged to cooperate with complementary stop means (123) to hold the third wheel set (3) in position, the complementary stop means (123) being included in the third wheel set (3) or in another outer wheel set directly or indirectly engaged with the third wheel set (3), the stop means (120) being disengageable under the action of disengagement control means (13) included in the arm (1) when the arm (1) reaches the end of its forward angular travel, so as to allow the third wheel set (3) to pivot in a single direction under the action of the second energy source (22), so as to rotate the arm (1) backwards to the beginning of the angular travel of the arm (1).

2. The drive mechanism (100) according to claim 1, wherein the arm (1) comprises a blocking device (20), the blocking device (20) being adapted to counteract the driving torque of the first energy source (12) and being arranged to limit the rolling speed of the first wheel (11).

3. The drive mechanism (100) according to claim 2, wherein the blocking means (20) is a braking means and/or a friction means and/or an adjustment means.

4. The drive mechanism (100) according to claim 3, characterized in that the blocking means (20) are means for adjusting the rolling speed of the first wheel (11) around the third wheel set (3).

5. Drive mechanism (100) according to claim 4, characterized in that the means for adjusting the rolling speed of the first wheel (11) around the third wheel set (3) comprise stop means (17), said stop means (17) being arranged to cooperate in a discontinuous manner with the first wheel (11) or with a fourth wheel set directly or indirectly meshing with the first wheel (11).

6. The drive mechanism (100) according to claim 1, characterized in that the second pivot axis (D2) is parallel to the main axis (D0) and is distinct from the main axis (D0).

7. Drive mechanism (100) according to claim 1, characterized in that the third wheel set (3) is arranged to pivot about the main axis (D0).

8. The drive mechanism (100) according to claim 2, characterized in that the planetary gear (10) forms all or part of the blocking means (20) and the planetary gear (10) is a speed regulation member (15).

9. The drive mechanism (100) according to claim 8, characterized in that the speed regulation member (15) comprises a resonator mechanism having at least one inertial mass (1700) with an alternating pivoting movement by means of a lever (170) cooperating with a ratchet (18) directly or indirectly driven by the first wheel (11).

10. The drive mechanism (100) according to claim 9, wherein the ratchet wheel (18) is coaxial with the first wheel (11).

11. The drive mechanism (100) according to claim 8, characterized in that the speed regulation member (15) is a tourbillon (150) or a carotin, and the first wheel (11) drives the frame of the tourbillon (150) or the carotin, or forms the frame of the tourbillon (150) or the carotin.

12. The drive mechanism (100) according to claim 8, wherein the governor member (15) is carotin and the first wheel (11) drives the frame of the carotin or forms the frame of the carotin.

13. The drive mechanism (100) according to claim 8, wherein the governor member (15) comprises a governor (19) directly or indirectly driven by the first wheel (11).

14. The drive mechanism (100) of claim 13, wherein the speed governor (19) is synchronized with the first wheel (11) and forms a first display for a first amount of time.

15. The drive mechanism (100) according to claim 13, wherein the speed governor (19) is a tourbillon or a carotin frame.

16. The drive mechanism (100) according to claim 1, wherein the arm (1) forms or drives a display for a second amount of time.

17. The drive mechanism (100) according to claim 1, characterized in that the third wheel set (3) forms or drives a display for a third amount of time.

18. The drive mechanism (100) according to claim 1, wherein the second wheel set (2) forms or drives a power reserve display.

19. Timepiece (1000) comprising at least one drive mechanism (100) according to claim 1.

20. The timepiece (1000) of claim 19, which is a watch.

21. Timepiece (1000) according to claim 20, characterised in that the first energy source (12) and/or the second energy source (22) is a barrel.

22. The timepiece (1000) of claim 19, being a timepiece.

23. Timepiece (1000) according to claim 22, characterised in that the first energy source (12) and/or the second energy source (22) comprise at least one pendulum and in that the timepiece (1000) comprises means for winding each of the pendulums.

Technical Field

The invention relates to a timepiece drive mechanism including a structure on which an arm is pivotably mounted about a main axis, the arm carrying a first mechanism, the first mechanism being pivotably mounted on the arm about a first pivot axis remote from the main axis and including a first wheel pivotably mounted about the first pivot axis or a pivot axis parallel thereto, the arm being subjected to a return torque of a first energy source, the drive mechanism further including at least one second energy source arranged such that a third wheel set included in the drive mechanism is subjected to the return torque directly or indirectly via a second wheel set, the second wheel set being pivotably mounted about a second pivot axis.

The invention concerns the field of timepiece drive mechanisms and the field of timepiece display mechanisms.

Background

The complex functional enthusiasts of watches appreciate some animation or movements in the timepiece display, which can be provided by a retrograde display mechanism or tourbillon or similar, which also ensures a lower sensitivity to position.

It is also popular to split the display, which provides a new look to the dial or mechanism.

Retrograde displays are generally limited to driving a pointer, or in rare cases a puck.

The retrograde drive of the tourbillon or the karussel frame can never be achieved, because the frame cannot be retracted on its fixed wheels, but must always rotate in the same direction. If a disengagement system using cams or the like is added to move the frame backwards, the operation will stop during the backwards movement, which is not acceptable.

Swiss patent application No.709331A2 in the name of SEIKO INSTR discloses a display mechanism comprising: a frame unit including an escapement mechanism and a speed governor; and an operation unit configured to distinguish a moving speed of the frame unit from a lapse of time, and to move the frame unit in a direction toward or away from a first axis, which is a center of the specific display area, wherein the operation unit moves the frame unit such that a motion trajectory reproduced when the frame unit moves in the direction toward the first axis as the center of the specific display area is continuous with a motion trajectory reproduced when the frame unit moves in the direction away from the first axis as the center of the specific display area.

Swiss patent application No.705938A1 in the name of ULYSSE NARDIN discloses a planetary gear train for a timepiece for transferring energy from an input of the planetary gear train to an output of the planetary gear train, the gear train comprising:

-a first wheel having a first axis of rotation;

-a first planet wheel having a second axis of rotation parallel to the first axis of rotation and arranged to cooperate with the first wheel;

-a second planet wheel having a second axis of rotation and integral with the first planet wheel;

-a fourth wheel having a first axis of rotation and being arranged in engagement with the second planet wheel; and

a frame having a first axis of rotation, the frame connecting the first axis of rotation with the second axis of rotation, such that the first planet wheel and the second planet wheel are carried by the frame,

wherein the first planet wheel and the second planet wheel are arranged to rotate about a first axis of rotation in a state in which the frame is rotatable about the first axis of rotation, and wherein the frame is arranged to be mechanically connected, directly or indirectly, to a first part of the timepiece and the first wheel or the fourth wheel is arranged to be mechanically connected, directly or indirectly, to a second part of the timepiece.

Disclosure of Invention

The present invention proposes to develop a retrograde drive mechanism capable of carrying wheel sets with a much higher inertia than the hands, in particular tourbillons or the like, and therefore proposes a completely novel display.

To this end, the invention relates to a drive mechanism according to claim 1.

The invention also relates to a timepiece comprising at least one such drive mechanism.

Drawings

Other features and advantages of the present invention will become apparent upon reading the following detailed description and upon reference to the drawings in which:

figure 1 shows a schematic plan view of the mechanism according to the invention.

Figure 2 represents a schematic exploded perspective view of the mechanism of figure 1.

Figure 3 is a block diagram representing a timepiece comprising such a mechanism.

Figures 4 to 9 partially show another variant which operates over an angular travel of 120 ° of the arm, as shown in plan view in figure 4; figures 5 to 8 show the position of the wheel set at different times; fig. 9 is a side view of the mechanism.

Figure 10 shows a schematic plan view of a further variant of the mechanism according to the invention.

Figures 11 to 14 show plan views of different arrangements of the mechanism according to the invention in a watch.

Detailed Description

The present invention relates to a timepiece drive mechanism 100, which timepiece drive mechanism 100 has the advantage of being able to be used in a watch or a static timepiece, and has unique new functions.

The drive mechanism 100 comprises a structure 110, for example a board, bridge or the like, on which structure 110 an arm 1 is mounted that pivots about a main axis D0. The arm 1 carries a first mechanism forming a planetary gear 10, which planetary gear 10 is pivotally mounted on the arm 1 about a first pivot axis D1, which first pivot axis D1 is remote from the main axis D0. The planetary gear comprises a first wheel 11, which first wheel 11 is pivotably mounted about a first pivot axis D1 or a second pivot axis D11 parallel thereto.

The arm 1 is subjected to a return torque of a first energy source 12, the first energy source 12 being for example a barrel, a pendulum mass system or another energy source.

The drive mechanism 100 also comprises at least one second energy source 22, which second energy source 22 is arranged such that the third wheel set 3 comprised in the drive mechanism 100 is directly subjected to a return torque, or indirectly subjected to a return torque via a second wheel set 2 mounted pivotably about a second pivot axis D2, as in the particular non-limiting variant shown in the drawings.

The second energy source 22 is the main energy source and it is arranged to store more energy than the first energy source 12.

According to the invention, the first wheel 11 is arranged to roll on the third wheel set 3 in a regularly advancing rolling motion under the influence of the restoring torque of the first energy source 12.

The planet gears 10 thus form a planetary wheel set which moves in rotation around the third wheel set 3, always in the same direction and at a constant speed, around the main axis D0, along the arrow G (clockwise in fig. 1).

According to the invention, the third wheel set 3 is arranged to remain in a fixed position during the first base stroke of the planetary gear 10, while during the second base stroke of the planetary gear 10, it is always rotated, in particular rapidly rotated, in the same direction, i.e. counter-clockwise as indicated by the arrow B in fig. 1 and 2, by the action of the second energy source 22.

In particular, according to the invention, the planetary gear 10 is or comprises a speed regulation member 15. The first wheel drives an element of the governor member 15. More specifically, the pheromone adjusting member 15 is a tourbillon 150 or carotin. Still more specifically, the first wheel 11 drives or forms the frame of the tourbillon 150 or of the carotin.

Thus, according to the invention, when third wheel set 3 is empty/stopped, arm 1 moves in the direction of arrow E with respect to fixed structure 110 under the action of first energy source 12 with respect to third wheel set 3, while arm 1 carried by third wheel set 3 moves backwards in the direction of arrow F with respect to fixed structure 110 during the second basic stroke of planetary gear 10, during the return of third wheel set 3 under the action of second energy source 22.

It is clear that the planetary gear 10 rolls permanently around the third wheel set 3 and that the planetary gear 10 continues to rotate with respect to the third wheel set 3 during the rotation of the third wheel set 3. Thus, there is an alternation of the first base stroke and the second base stroke.

As the arm rotates successively in a first direction of travel along arrow E and in a second opposite direction along arrow F, axis D1 travels a limited angular travel about main axis D0.

In a particular non-limiting manner, the first base stroke of the planetary gear 10 is much greater than the second base stroke, in particular the first base stroke is more than twenty times greater than the second base stroke.

In the advantageous example shown in fig. 1 and 2, a complete cycle takes one minute, with a slow movement of arm 1 in the first base stroke of 58 seconds and a fast return of arm 1 in the second base stroke of 2 seconds.

However, the invention makes it possible to make different adjustments to the ratio between the first and second base strokes. For example, it is contemplated that equal first and second base strokes may be achieved.

In this variant of the invention shown in fig. 1 and 2, in order to manage the rotary motion of the third wheel set 3, the drive mechanism 100 comprises a stop device 120, the stop device 120 being fixed to the structure 110 and more particularly being arranged to cooperate with a complementary stop device 123 comprised in the third wheel set 3 to hold the third wheel set 3 in position, or alternatively being comprised in another outer wheel set directly or indirectly engaged with the third wheel set 3. The stop means 120 more particularly comprise a release lever arranged to cooperate in succession with a plurality of pins arranged on the wheel set 3, which pins form, in the non-limiting example shown in figures 1 and 2, these complementary stop means 123. In the example shown, the pins are arranged angularly in a regular manner. Different angular spacings may also be designed to create a particular display.

These stop means 120 can be uncoupled, under the action of disengagement control means 13 included in arm 1, to allow third wheel set 3 to pivot in a single direction (anticlockwise arrow B) under the action of second energy source 22, when first wheel 11 completes its first base stroke, so as to rotate arm 1 backwards to the beginning of its angular stroke.

When third wheel set 3 is stopped in an angular stop position, first wheel 1 makes a first base stroke and arm 1 moves at a low speed (which is its display speed) on a forward angular stroke. At the end of the first base stroke of the first wheel 11, the uncoupling control device 13 uncouples the stop device 120, so that the third wheel set 3 is free and is subjected to the torque of the second energy source 22, either directly or via the second wheel set 2, according to the chosen constructive variant. At this point the third wheel set 3 makes a rotation, in particular a sudden and almost instantaneous rotation, and then the third wheel set 3 returns to another angular stop position between the other pin 123 and the release lever 120. This rotation of third wheel set 3 causes arm 1 to return backwards to its angular travel starting position, in particular, in the case illustrated, arm 1 to return backwards to its angular travel starting position at an acceleration speed much higher than its slow display speed.

In another variant, the first wheel 11 is arranged to roll inside the third wheel set 3. Many other configurations may be envisaged, in particular in terms of the relative positions of the respective pivot axes, in which a plurality of suitable intermediate wheels have a cascade/series arrangement.

Of course, it is also possible to subject the third wheelset 3 to the torque of the at least one third energy source, for example in a direct engagement.

The operation of drive mechanism 100 is dependent upon the level of energy available in second energy source 22. In the case of the integration of the drive mechanism 100 in a watch, the second energy source is advantageously charged by an automatic winding mechanism, not described in detail here, since this is known to the person skilled in the art: as long as the second energy source has sufficient energy, the first energy source 11 is permanently wound by the second energy source, the first energy source 11 thus forms a buffer storage, and the planetary gear 10 which is forcibly driven by the first energy source 11 is thus a constant-force mechanism, or more precisely a constant-torque mechanism.

In a very compact variant, shown in fig. 1 and 2, the stop means 120 comprise a lever forming a release lever, which is pivotably mounted on a lever axis D12 and is returned in the direction of arrow D by elastic return means 127, for example a spring or the like. With lever pin 129.

The arm 1 comprises a ramp 13, the ramp 13 being arranged to cooperate with the lever pin 129 at the end of the forward angular travel of the arm 1 and to push the lever in the direction of the arrow C, which cancels the (action of the) lever beak with bearing surface 128 that previously kept in position one stop pin 123 comprised in the third wheel set 3 (in this case three pins distributed at 120 ° intervals). The third wheel set 3 is now released and can rotate, its pin 123, previously immobilized, thus being able to pass under the arm 1. The position control release function of the pin 123; they ensure the accuracy and duration of one complete stroke cycle.

Advantageously, the arm 1 comprises blocking means (banking means)20 apt to resist the driving torque of the first energy source 12 and arranged to limit the rolling speed of the first wheel 11. In fact, any device that can slow down the speed of the system is advantageous to achieve regular operation of the constant force mechanism formed by the present invention.

More specifically, these blocking means 20 are braking and/or friction and/or adjustment means. They may include, inter alia, aerodynamic braking devices, eddy current braking devices or other devices. For example, the first wheel 11 may carry a second hand.

More particularly, as in the non-limiting case shown in fig. 1 and 2, the blocking means 20 are means for adjusting the rolling speed of the first wheel 11 around the third wheel set 3. The adjusting mechanism is preferably located in the planet gear 10 forming the planetary wheel set.

As shown in the non-limiting variant shown in fig. 1 and 2, the means of adjusting the rolling speed of the first wheel 11 around the third wheel set 3 comprise a stop device 17, for example a lever or similar, arranged to cooperate in a discontinuous manner with: first wheel 11, or a synchronous wheel set of first wheel 11, or a fourth wheel set directly or indirectly meshing with first wheel 11.

In particular and as shown in fig. 1 and 2, the second pivot axis D2 is parallel to the main pivot axis D0 and is distinct from the main pivot axis D0.

In particular, and as shown in fig. 1 and 2, the third wheel set 3 is arranged to pivot about a main axis D0.

More specifically, the planetary gear 10 forms all or a part of the blocking device 20 and is the speed regulation member 15.

More specifically, the speed regulation member 15 comprises at least one inertial mass 1700, which is subjected to an alternating pivoting movement by a pallet fork (pallet)170 included in the stop device 17 and is arranged to cooperate with a ratchet 18 driven directly or indirectly by the first wheel 11.

More specifically, the ratchet 18 is coaxial with the first wheel 11.

More specifically, the ratchet 18 is an escape wheel.

In a particular embodiment, the speed regulation member 15 is a tourbillon 150, the first wheel 11 driving the frame of the tourbillon 150, or forming the frame of the tourbillon 150. In this case, the axis of the resonator mechanism, typically a balance/balance spring mechanism, included in the regulating member 15 coincides with the first pivot axis D1.

In another similar particular embodiment, the speed regulation member 15 is a carotin, the first wheel 11 driving or forming a carotin frame. In this case, the axis of the resonator mechanism, typically a balance/balance spring mechanism, included in the regulating member 15 is a second pivot axis parallel to the first pivot axis D1, which is located, for example, at the distal end of the speed regulator (governor)19, as shown in fig. 1 and 2.

More specifically, the speed regulation member 15, being a tourbillon or a karussel or other device, comprises such a speed regulator 19 driven directly or indirectly by the first wheel 1.

More specifically, the governor 19 is synchronized with the first wheel 11 and can form a first display for a first amount of time.

More specifically, the speed governor 19 is a tourbillon or a karussel frame.

Each wheel set of the drive mechanism according to the invention can be used for a specific display. Thus, more specifically, the arm 1 forms or drives a display for a second amount of time. The arm may carry an eccentric display, for example on a star wheel pivotally mounted on the arm 1.

Similarly, more specifically, third wheel set 3 forms or drives a display for a third amount of time, such as a jump minute display.

More specifically, second wheel set 2 forms or drives a power reserve display.

It is clear that the drive mechanism according to the invention is able to display the passage of time very vividly, by clearly visible rolling of the first wheel 11 on the third wheel set 3, and by periodic backward return of the arm 1. Each wheel set may be used to carry an eccentric display.

The invention also concerns a timepiece movement including at least one such drive mechanism 100.

The invention also relates to a timepiece 1000 comprising at least one such drive mechanism 100, which in a first variant is a watch. The first energy source 12 and/or the second energy source 22 of the timepiece may comprise at least one barrel and/or an electromechanical energy source or other energy sources in a conventional manner. Advantageously, the second energy source 22 is charged by an automatic winding mechanism.

In another variant, timepiece 1000 is static and may be, in particular, a clock. The first energy source 12 and/or the second energy source 22 of the timepiece may comprise at least one barrel and/or an electromechanical energy source or other energy sources in a conventional manner. Alternatively, the first energy source 12 and/or the second energy source 22 of the timepiece comprises at least one pendulum, then the timepiece 1000 comprises means for winding each pendulum. Preferably, however, the first energy source 12 is a barrel forming a buffer storage means, which means that only the second energy source 22 needs to be wound, which second energy source 22 powers the first energy source 12.

The principles of the present invention are applicable to many other variations and to many specific applications. Fig. 4 to 9 show this principle in a simplified manner compared to fig. 1 and 2, and fig. 4 to 9 show only the first energy source 12, illustrated in the form of a simple flat spring, the arm 1 carrying the first wheel 11, and the third wheel set 3 on which the first wheel 11 rotates. In this example, the tourbillon frame carried by the first wheel 11 makes one revolution per minute, the first wheel 11 moving on the third wheel set 3 for about 18 seconds while the third wheel set 3 is still in the rest position, and continuing to roll on it for two seconds, which are required for the third wheel set 3 to return back 120 ° in the anticlockwise direction in these figures. FIG. 5 shows the assembly in this back-to-back immediate position; fig. 6 shows an intermediate position X; fig. 7 shows the extreme angular position of the clockwise travel of the arm 1; figure 8 shows the counterclockwise backward return of the third wheel set and its carrying arm 1 (shown by the change in position of the markers 1,2, 3).

Fig. 10 shows another variant, in which the arm 1 acts as the winding rack on the winding barrel of the arm of the frame, which winding barrel forms the first energy source 12 driving the frame arm 1; under the effect of its torque, the tourbillon frame is driven and rotates on the circumference of the third wheel set 3, the movement of the arm 1 being frequency-and transmission ratio-dependent. The arm 1 of the drive frame moves from its first position of 0 deg. and reaches its maximum position of 120 deg.. At this point, the unlocking of the second energy source 22 takes place, which is formed here by the barrel of the basic watch movement. This barrel is associated with a reduction gear set 223, reduction gear set 223 being connected to third wheel set 3. The force from the movement barrel 22 will drive the reduction gear wheel set 223 and therefore the third wheel set 3 to rotate 120 counter-clockwise. The angle of displacement of the third wheel set 3 is controlled via a gear train 221 and is positioned by a stop pin on a positioning bolt 223, which gear train 221 can be connected to the reduction wheel set 223 or to the movement barrel 22. In order to manage the return process within a duration of about 2 seconds, a speed governor with an inverter (in particular comprising pinion, ratchet 18, pallet/lever 170) is connected in series with the third wheel set 3, so that the time period of the backward return can be adjusted, in particular between 1 and 10 seconds. During the 120 ° displacement of the third wheel set 3, the first energy source 12 (here it is the frame arm spring) is wound up again and the frame continues to run by moving on the circumference of the third wheel set 3. In the variant shown in fig. 10, the angular travel is not controlled by the pin 123 of the variant of fig. 1 and 2, where this pin 123 is replaced by a positioning train 221. Here, other angle values (e.g., 360 °) may be managed to display date changes or other situations.

It should be noted that the barrel spring of the basic movement no longer interferes with the going train as in the traditional movement. Its only function now is to give the impact needed for positioning the third wheel set 3.

The first energy source 12, here the frame arm spring, is preloaded with the torque required for the operation of the tourbillon, which force will remain constant. The 120 deg. anticlockwise angular rotation travel of the third wheel set 3 winds the frame arm spring in a regular manner.

In this way, it is possible to envisage developing various types of movements with hour and minute hands and complex functions, such as indications of the phases of the moon and/or of the day/night and/or of the power reserve, as shown in fig. 11 to 13, in particular of the return of the frame and of the third wheel set; or they have a positioning train in which the pinion is no longer required and the time-setting function is unidirectional; or the movements have a positioning train; or they have a positioning train and/or a movement barrel, in which the time-setting function can be performed in both directions.

Winding is performed by crown 220 and main barrel 22 will no longer interact with the going train as in the usual technique.

This arrangement also enables the lunar phase correction to be performed directly using the crown, eliminating the need to integrate the corrector in the intermediate part of the case.

It is clear that the invention ensures an almost constant driving force for the governor mechanism, in particular for the tourbillon or the karussel frame, throughout the entire power reserve of the main barrel.

Fig. 11 through 14 illustrate the broad range of positioning for various displays provided by the present invention. In the illustrated example, the hours and minutes are read on a dial at 12 o ' clock, the power reserve is read on a sector with retrograde hands at 9 o ' clock, the phases of the moon and/or the days/nights or sunsets or other indications are read at 3 o ' clock, while the tourbillon has a movement over 120 ° and it is possible to orient the movement of the frame over 120 ° as a substantially circumferential movement as shown in fig. 11 and 14, or about an axis as far as possible off-center as shown in fig. 12 and 13, in which the frame moves backwards from left to right or from right to left, respectively.

The value of 120 ° for these examples is not limiting, the angle value depending on the desired time trip period; the backward stroke value is also adjustable, for example between 2-5 seconds, and allows a non-sudden, shock-free backward return.

The backward return of the frame enables to power the variation of minutes.

The backward return is independent of the frequency of the resonator mechanism and has no effect on the travel time difference of the movement.

In other variants, a plurality of planet gears 10 can be provided for the third wheel set on the periphery of the latter. Systems at multiple levels may also be designed to manage different functions.