EP1916574A1 - Indicating hand for timepiece, movement to drive said indicating hand and corresponding timepiece - Google Patents

Abstract

The hand i.e. hour hand (35) has a base (36) driven by an hour wheel (33) of a clock movement for being rotated along a rotation axis. The base is extended by a stem (40) cooperating with graduations of a timepiece. The stem defines a bearing for rollers (46, 70), equipped with radial or conical teeth (48, 77), with respect to another rotation axis perpendicular to the former axis. The rollers are driven in rotation with respect to the bearing along the latter axis by driving mobiles (50, 78) of the clock movement. An independent claim is also included for a clock movement comprising a driving mobile.

Description

Technical area

The present invention relates to a timepiece indicator needle comprising a base, intended to be driven by a watch movement drive member to rotate along a first axis of rotation, the base being extended by a first portion of index intended to cooperate with graduations of the timepiece.

The present invention also relates to a watch movement adapted to allow the driving of such an indicator needle and a timepiece comprising this movement associated with this indicator needle.

State of the art

Such indicator hands are common in the field of watchmaking, a timepiece generally comprising several, each of which is associated with a particular predetermined size, in relation to graduations carried by a dial.

Thus, timepieces are known for a long time, in which three hands are used to display the hour, minute and second, while additional hands are provided to display additional information. , such as the date, a second time zone, the phases of the moon, a power reserve, etc.

For concerns related to the size, especially of the display area of the timepiece, it may, however, be desirable to associate a pointer pointer to several sizes to be displayed simultaneously, particularly in the case of coins. watchmaking of the type with complications.

For example, the patent application EP 1 413 934, published April 28, 2004 in the name of ETA SA Manufacture Horlogère Suisse, describes a timepiece in which a hand of the hours making a turn in twelve hours is coaxial climb to a disk driven by the movement to make a turn in twenty four hours. The disc has two half-discs, one light and the other dark, positioned in reference to the hour hand to allow the day-night indication in relation to the latter. Thanks to this structure, the hour hand simultaneously displays two time information.

However, the mechanism described in the above-mentioned patent application does not make it possible to simultaneously indicate quantities that are independent of one another.

Disclosure of the invention

A main object of the present invention is to overcome the drawbacks of the known mechanisms of the prior art, by proposing a timepiece indicator needle enabling the simultaneous display of a plurality of information, some of which are independent. from each other, and a movement for controlling such an indicator needle.

For this purpose, the present invention relates more particularly to an indicator needle of the type mentioned above, characterized in that the first index portion defines a support for a second index portion provided with a radial or conical toothing, in reference to a second axis of rotation substantially perpendicular to the first axis of rotation, and intended to be driven in rotation relative to the support, along the second axis of rotation, by a driving wheel of the watch movement.

With this feature, the indicator needle can be driven in a conventional manner to display the time, for example, in relation to graduations carried by a dial, while the rotation of the second index portion can display a additional information that can be independent of the time. In addition, the overall size resulting from this structure is moderate and makes it possible to visually lighten the display area of the corresponding timepiece with respect to the solutions of the state of the art.

Many alternative embodiments are possible without departing from the scope of the invention. In particular, it is possible to drive the second index portion continuously, to display a power reserve for example, or to train it periodically, to display a day-night indication or the activation state. an additional function, such as an alarm clock, for example.

According to an alternative embodiment, it can be provided that the indicator needle comprises a third index portion also rotatably mounted with reference to the support and driven from the movement to display an additional magnitude.

Thanks to these characteristics, it is possible to envisage, by way of illustration, a display of the power reserve of a watch movement as well as of the day-night indication on the single hour hand.

Brief description of the drawings

Other features and advantages of the present invention will appear more clearly on reading the detailed description of a preferred embodiment which follows, made with reference to the accompanying drawings given by way of non-limiting examples and in which:

- Figure 1 shows a simplified plan view, bridge side, of an exemplary embodiment of a movement for a timepiece according to a preferred embodiment of the present invention;

FIG. 2 represents a simplified cross-sectional view of part of the movement of FIG. 1 along the line II-II;

FIG. 3 represents a simplified cross-sectional view of another part of the movement of FIG. 1 along line III-III visible in FIG. 5;

FIG. 4 represents a simplified plan view, platinum side, of a part of the timepiece movement of FIG. 1;

FIG. 5 represents a simplified plan view, similar to the view of FIG. 4, of another part of the timepiece movement of FIG. 1, in a first configuration;

FIG. 6 represents a simplified plan view similar to the view of FIG. 5, in a second configuration;

FIG. 7a represents a simplified cross-sectional view of a construction detail of the movement of FIG. 1, according to an alternative embodiment, and

- Figure 7b shows a simplified cross-sectional view of the construction detail of Figure 7a, according to the sectional plane marked by the line P-P in Figure 7a, perpendicular to the plane thereof.

Mode (s) of realization of the invention

The figures as well as the following detailed description relate to a movement for a timepiece comprising a mechanism for indicating the power reserve, in a nonlimiting illustrative manner. In particular, the mechanism for indicating the power reserve is of the type comprising a differential gear, similar to the mechanism described in the patent application. European EP 1 139 182 A1 in the name of the Applicant, and its operation will not be described in detail insofar as the object of the present invention is not directly related to this mechanism. The part of the description of the aforementioned application relating to the operation of the differential is incorporated by reference in the present application.

FIG. 1 represents a simplified plan view, on the bridge side, of this movement for a timepiece.

The movement comprises a plate 1 having various holes and holes intended to arrange and position most components of the movement, in a conventional manner.

The plate carries in particular two barrels 2 and 3 forming the driving member, or energy source, the watch movement. These two barrels 2 and 3 each comprise a drum 4 having a radial toothing and closed by a lid 6. A motor spring (not visible) is typically housed in each of the drums being connected to a barrel shaft 7, by a first inner end, and drum, by a second outer end. Each of the shafts 7 ensures the rotational mounting of the corresponding barrel with reference to the plate.

The two barrels 2 and 3 are mounted in series, the teeth 5 of their respective drums being arranged in engagement with each other by means of a pinion 8.

The loading of the barrels is performed by the action of the user on a conventional winding mechanism (not shown) acting, at the input of the drive member, on a ratchet 9 integral in rotation with the shaft 7 of a first barrel 2, rotating the inner end of the corresponding spring. The winding of the spring of the second barrel 3 is achieved through the drum of the first barrel, the pinion 8 and the drum of the second barrel. The output of the drive member to the work train (not fully represented) of the movement is implemented in the form of a wheel 10, integral in rotation with the shaft 7 of the second cylinder 3.

The wheel 10 is arranged in engagement with the pinion 12 of a medium-sized wheel whose wheel 13 is engaged with a center pinion 14. In known manner, the center pinion is integral in rotation with a center wheel 15 having a kinematic connection with a mechanical oscillator, not shown, providing a time base for regulating the running of display members of the timepiece.

Furthermore, the movement comprises a mechanism for controlling a display of the power reserve of the barrels 2 and 3. This mechanism comprises a differential gear 16 having a first wheel 17 defining a first differential input, a second wheel 18 defining a second differential input and a central shaft 19 defining an output.

The first wheel 17 is arranged directly engaged with the ratchet 9 of the first barrel 2, while the second wheel 18 is kinematically connected to the output wheel 10 of the motor member via a multiplicative gear train comprising, at illustrative non-limiting title, first, second and third mobiles 21, 22 and 23.

Figure 2, which shows a simplified cross-sectional view along the line II-II of Figure 1 clarifies the operation of the power reserve indication mechanism.

Each of the input wheels 17 and 18 of the differential is secured to a toothing 25, 26 arranged in engagement with the toothing of a satellite 27, integral with the central shaft 19 while being free to rotate along an axis of rotation. 25 perpendicular to that tree.

Thus, during winding operations, the rotation of the ratchet 9 causes that of the first input wheel 17 which rotates the central shaft 19 via the satellite 27, the second input wheel 18 can be considered as substantially fixed during the period of reassembly.

In normal operation of the movement, the energy source discharges by supplying the oscillator energy, the latter being released from the output wheel 10 of the second cylinder 3, while the ratchet 9 of the first cylinder 2 remains stationary. The slow rotation of the wheel 10 is transmitted to the second input wheel 18 of the differential, via the multiplicative gear 21, 22, 23, and thus to the central shaft 19, via the satellite 27.

FIG. 3, which represents a simplified cross-sectional view of another part of the movement along the line III-III of FIG. 5, illustrates the transmission of the movements of the central shaft 19 of the differential to a distance of display member and the way in which the information relative to the power reserve can advantageously be presented by this display member, according to the invention.

The shaft 30 of the center wheel carries a floor 31, in a conventional manner, on which a minute hand 32 is driven. Moreover, the roadway 31 is connected to a wheel of hours 33 by a timer (referenced 34 on the Figure 4).

The hour wheel 33, typically driven by the center wheel to make a turn on itself in twelve hours, carries a 35 hour hand, hunted on its barrel.

The hour hand 35 comprises a base 36 of generally cylindrical shape, of axis coinciding with the axis of rotation of the hour wheel, and having a central hole through which it is driven on the barrel of the hour wheel 33 .

The base 36 comprises an additional through hole 37, oriented perpendicularly to the axis of rotation of the hour wheel. An annular bead 38 is formed around the hole 37 to create an extra material thickness at this location.

A shaft 40 defining a first index portion is driven into the hole 37, the latter having, in its length from the base 36 of the needle, three cylindrical sections 41, 42 and 43, each of which has a diameter slightly smaller than that of the previous section. The third section 43 has a screw thread, for illustrative purposes, on which are screwed two end portions 44, 45, adjacent and of generally conical shape to define the end of the hour hand 35.

A gun 46, defining a second index portion of the hour hand, is rotatably mounted on the first section 41 of the shaft 40, being disposed in abutment against the annular bead 38 of the base by its first end. 47.

The first end 47 is provided with a radial extension bearing a conical toothing 48, the latter being arranged in engagement with the conical toothing 49 of a drive wheel 50, mounted in free rotation on the hour wheel 33.

The drive wheel 50 is kinematically connected to the output of the differential gearing 16. For this purpose, a gear train is provided comprising, from the shaft 19 of the differential, carrying a pinion 51, a first and a second reference 52 and 53, then a mobile whose wheel 54 is engaged with the second reference 53 and the pinion 55 is engaged with a wheel 56 of the drive wheel 50. The wheel 56 and the conical teeth 49 of the mobile 50 are secured to each other, so that the information relating to the power reserve of the energy source, generated from the differential 16, is transmitted to the barrel 46 of the needle hours 35.

With this mechanism, the barrel 46 is rotated relative to the base 36 of the hour hand, around the shaft 40, depending on the evolution of the value of the power reserve of the source of power. energy of the watch movement. To exploit this particularity, one can foresee different methods of displaying the corresponding value of the power reserve. In particular, it can be provided that the barrel 46 is provided with graduations, in days or hours, whose value displayed towards the plane in which the minute hand moves corresponds to the actual value of the power reserve. It can also be provided that the first index portion of the hour hand bears a fixed mark, arranged to be arranged opposite the relevant value, carried by the barrel, at each moment. As an alternative embodiment, it is conceivable to arrange the graduations along a helix extending in the axial direction of the barrel 46, which makes it possible to increase the readability thereof.

Note that when the hour wheel 33 is rotated, the hour hand 35 does the same, which, with constant power reserve is when the drive wheel 50 is fixed, rotates the barrel 46 around the first index portion of the hour hand. Indeed, in this case, the conical teeth 48 of the barrel rolls on the fixed teeth 49 of the drive wheel. Thus, if no particular precaution is taken to take into account this phenomenon, the latter may give rise to a drift of the indication of the power reserve with reference to its actual value.

In the context of the preferred embodiment of the invention described here, this drift is neutralized by the choice of a suitable gear ratio of the multiplicative gear train 21, 22, 23 disposed between the output 10 of the power source and the second input 18 of the differential gearing 16. Note that this choice depends in particular on the number of revolutions of the barrel 46 desired between the graduations corresponding to the minimum and maximum values of the power reserve, as well as the number of revolutions that the shaft 7 of the second cylinder 3 between these same values. Those skilled in the art will be able to adapt the various wheels in play according to their own needs without departing from the scope of the present invention.

Furthermore, it will also be noted that the watch movement comprises a conventional time setting mechanism, shown diagrammatically in FIG. which represents a simplified plan view, platinum side, of some of the elements which have just been described in relation to FIG.

The time setting mechanism comprises a setting rod 60 carrying a sliding pinion 61 intended to be brought into engagement with a return 62, mounted here in translation relative to the plate 1 to mesh with the wheel. timer 34 only in the time setting position.

To avoid distorting the indication of the value of the power reserve by acting on the wheel hours 33 from the timer, during a time setting operation, a compensation wheel can be provided. This compensation wheel comprises a gear 63 arranged in engagement with the wheel of the timer 34 and meshing with a wheel 64 of a compensating wheel whose pinion 65 is in engagement with the wheel 56 of the driving wheel 50. this structure, when the hour wheel 33 is rotated from the time setting mechanism, the drive wheel 50 is simultaneously rotated in one direction and to a measure to maintain fixed the angular position of the barrel 46 with respect to the base 36 of the hour hand 35.

A lanterning is preferably provided, in this case, between the pinion 55 and the wheel 54, to neutralize the compensation applied to the wheel 56 which causes a rotation of the pinion 55. In the absence of such lanternage, the indication of the power reserve value could be distorted and possibly the gear train of the corresponding mechanism could be damaged.

Returning to FIG. 3, a particular mechanism for displaying additional information, namely a day-night indication, with the hour hand 35 will now be described.

It appears from FIG. 3 that the hour hand 35 comprises a third index portion, coaxial with the shaft 40, disposed around the barrel 46 and also having the shape of a barrel 70 free to pivot relative to the barrel 46 and relative to the shaft 40.

A helical spring 71 is interposed between the barrel 46 and the second section 42 of the shaft 40, being prestressed between, on the one hand, the flank of the first section 41 of the shaft 40 and, on the other hand, an internal surface 72 The annular barrel 70. The latter is thus in abutment against the end portion 44 of the first index portion, the latter defining an axial stop for the barrel 70, under the effect of the force exerted by the spring 71.

The gun 70 can occupy two stable angular positions during its rotational movements, identified by the cooperation of a pin 73 driven into the barrel with a first or second blind hole 74 (visible in Figure 7b) of the portion of end 44. As an indication, it is expected that the barrel is separated into two halves, in a plane containing its axis of symmetry, each half having a clean color, adapted to allow easy discernment of the day-night indication. In this case, only one half is visible to a user in each of the two stable angular positions of the barrel.

Of course, it is possible to provide different angular positioning means, such as a ball pawl, and arranged differently, in particular distinct from the axial abutment of the barrel 70.

Two windows 75 are formed in the barrel 70 and associated with the two stable positions mentioned above to show the graduations carried by the gun 46 in relation to the value of the power reserve.

The end 76 of the barrel 70 located near the base 36 of the hour hand 35 has a radial toothing 77 arranged in engagement with the toothing in the field of a ring 78 pivotally mounted around the hour wheel 33.

The ring gear 78 is integral with an additional ring gear 80 bearing a gear arranged in engagement with the wheel 81 of a conventional type of clutch release wheel fixed to the plate 1 by means of a bearing screw 82. mobile declutching is provided to transmit the relative rotational movements of its wheel and its pinion in one direction, passing in a known manner.

A whip type mechanism is provided to act on the pinion 83 of the disengaging wheel and rotate it by a predefined turn fraction, in the forward direction, every twelve hours. The operation of this The mechanism will be described in more detail in connection with FIGS. 5 and 6, in which it is shown in similar simplified plan views in two different configurations.

The pinion 83 is rotated by a rocker 85 having a base 86 pivotally mounted on the plate by means of a bearing screw 87 and from which extend two arms 88 and 89, forming a predefined angle. The arm 88 carries a rake 90, at its free end, whose toothing is arranged in engagement with the toothing of the pinion 83. The arm 89 carries a locking pin 91 in the region of its free end, whose function will be exposed below. A long spring 92 of return is mounted on the plate so as to exert a force on the arm 89 tending to push it in the direction of rotation anti-clockwise in Figures 5 and 6, a stop 93, integral with the plate, being intended to define the corresponding rest position of the flip-flop 85.

The whip mechanism also comprises a control wheel 95 rotated in the anti-clockwise direction directly by the hour wheel 33 and bearing, on the one hand, a pin 96 and, on the other hand, a lift 97.

The angular positioning of the control wheel 95 is such that, during a winding phase, occurring outside the hours selected for day-night indication changes which are generally around six in the morning and six in the morning. hours in the evening, the pin 96 comes into contact with the arm 89 of the latch 85 and exerts on it a force opposing the force of the return spring 92 to rotate the latch clockwise.

When the whip mechanism is in the configuration shown in Figure 5, the locking pin 91 carried by the arm 89 cooperates with the notch of a pawl spring 98 fixed on the plate 1 to lock the rocker 85 in the armed position.

The disengaging wheel is arranged in such a way that the rotational movement of its pinion 83, induced by the movement of the rake 90, is not transmitted to its wheel 81, which remains stationary.

The lift 97 is disposed substantially on the same diameter of the control wheel 95 as its pin 96, by way of non-limiting illustration. Also, about six hours after the rocker 85 has been armed, the lift 97 comes into contact with a spout 99 located at the end of the spring ratchet 98, to deform the latter and release the locking pin 91 of the rocker.

When the latch 85 is released, it pivots in the counterclockwise direction under the effect of the force exerted by the return spring 92, to whet the pinion 83 of the disengaging mobile, the corresponding displacement of the rake 90 causing a rapid rotation pinion 83 in the forward direction, here, in the clockwise direction.

FIG. 6 shows the whip mechanism while the lift has just released the rocker, while still being in contact with the nose 99 of the pawl spring 98.

It appears from this figure that the spout 99 has an extra thickness intended to cooperate with the pin 91 of the rocker, via a bearing surface, to lock the latter at the end of arming. The bearing surface is advantageously curved to ensure a better stability of the locked position of the rocker. In addition, it should be noted that the thickness of the lift 97 is less than that of the pin 96, which allows it to move opposite the rocker without touching it, since it must not present direct interaction with the latter unlike the pin.

The gear ratios between the rake 90, the gear 83, the wheel 81, the rings 80 and 78 and the radial toothing 77 of the barrel 70 are preferably chosen so that each pivoting of the lever 85 causes a rotation of a turning the barrel 70 to change the day-night indication at the hour hand 35.

As already mentioned and will become more clearly apparent from the description of FIG. 7b, when the barrel 70 is driven to perform a half-turn, the pin 73 is extracted from a blind hole 74 of the first forefinger portion to lodge in the other. The extraction of the pin 73 is made possible by the compression of the helical spring 71.

It can be noted that, thanks to the structure that has just been described, the change of the day-night indication is also performed during the time-setting operations, that these are implemented in the direction time of movement of the indicator hands or counter-clockwise.

During the routine operation of the hour hand 35, the barrel 70 is locked by cooperation of the pin 73 with one of the blind holes 74. Consequently, the rings 78 and 80 are rotated and rotate the wheel 81 the disengagement wheel in the direction of rotation not passing, the rotation is therefore not transmitted to the pinion 83. With this structure, the drift that may occur in the case of the power reserve is neutralized directly by the disengaging mobile.

Of course, the possible applications of the principle just described are almost unlimited, since all kinds of information can be displayed in place of the day-night indication, such as in particular a second time zone, the second, the day of the week, the date, the week, the month, the leap years, etc.

By way of non-limiting example, it is possible to modify the distribution of the available display surface between the guns 46 and 70 and to provide for displaying a date on the barrel 70, the corresponding indications being distributed in a helix, such as that has already been suggested in relation to the power reserve.

It is also possible to provide a continuous drive in rotation of the gun 70, replacing the latch 85 by a return driven directly by the control wheel 96 and arranged in engagement with the pinion 83 of the disengaging mobile.

Alternatively, it is possible to arrange an external control member, on the corresponding timepiece, coupled to a mechanism that would manually operate the rotation of the barrel 70. Such a mechanism could be arranged on the basis of a pre-existing complication in the movement, such as a wake-up function or a large bell or a switch between two time zones, the gun 70 is then used to indicate the operating state of the complication, on or off for the alarm clock or the big bell.

Moreover, the structure described for the hour hand 35 is non-limiting. Figure 7a shows a cross sectional view of a hour hand 100 according to an alternative embodiment, for illustrative purposes. The elements already described in connection with the preceding figures bear the same numerical references as before to simplify the understanding of this variant embodiment.

The hour hand 100 has a base 36 from which extends a shaft 40 carrying two end portions 44 and 45, as explained above.

In addition, the first index portion, comprising the shaft and the end portions, defines a support for first and second guns 101 and 102, of the same respective axes as the shaft 40.

The first barrel 101 is mounted free to rotate on the first section 41 of the shaft 40 by its main portion 103, the latter being secured to an end portion 104 comprising a pin 73 intended to cooperate with two blind holes 74 of the end portion 44. A helical spring 71 is prestressed between the barrel 101 and the flank of the first section 41 to hold the barrel bearing against the end portion 44.

Advantageously, when the gun 101 is used to display the day-night indication, it can be predicted that it is divided into two halves along a plane containing its axis of symmetry, with only one half visible a user, at a time, to distinguish the state of the day-night indication.

More specifically, the end portion 104 of the barrel 101 has transverse dimensions identical to those of the end portion 44, at the junction of these two elements, so as to ensure continuity in the shape of the needle 100 hours and, is intended to present the division allowing the display of the day-night indication.

The end of the barrel 101 located on the side of the base 36 has a radial toothing 105 arranged in engagement with the toothing of a mobile 106, mounted in free rotation around the hour wheel 33 and driven via a crown 107 with which it is solidary. Those skilled in the art will not encounter any particular difficulty in implementing crown drive means 107 adapted to their own needs on the basis of the above teaching.

The second barrel 102 is rotatably mounted on the main portion 103 of the first barrel 101, its outer wall being located substantially in line with that of the end portion 104 of the latter.

Advantageously, the end 108 of the second barrel, located on the side of the base 36 of the needle, has a radial toothing 77, or conical, arranged in engagement with the toothing of a driving wheel 78 rotatably mounted on the mobile 106 and the crown 107. As previously described, the driving wheel 78 can be controlled to perform a display of the value of the power reserve of the energy source of the movement by a rotation adequate barrel 102 around the shaft 40.

The present variant of embodiment thus proposes a structure of the trundle type, thanks to which it is not necessary to provide one or more windows on the outermost barrel to allow the visualization of indications carried by the barrel located the most inside.

FIG. 7b represents a detail of construction of the hour hand, according to the plane of section noted PP in FIG. 7a, that is to say a cutting plane passing close to the side wall of the portion of end 44.

This figure shows the shape of the blind holes 74 with which the pin 73 of the day-night indication gun cooperates in the two stable angular positions of the latter. It is further distinguished that two grooves 109 in the form of arcs can be formed on either side of the two blind holes, to facilitate the rotation of the day-night indication gun by reducing the compression of the coil spring 71.

The foregoing description corresponds to a preferred embodiment of the invention described in a non-limiting manner. In particular, the forms Represented and described for the various constituent elements of the movement for a timepiece are not limiting.

The present invention is not limited to displaying two additional pieces of information by the same indicator needle, or by the use of an hour hand for this purpose. For example, it is possible to use the display according to the present invention in connection with a date hand which, in a rotational movement on itself, would also make it possible to display the leap years in steps of quarter turn, or the month, by a twelfth of a turn.

It is further possible to implement the two additional information display mechanisms, as described, independently. Conversely, if the constraints of the manufacturer in terms of space allow it, it may provide to display more than two additional information from the same needle, without departing from the scope of the present invention. Alternatively, it is also possible that two needles, including hours and minutes, have similar behaviors, such as, for example, the realization of a simultaneous display of the day-night indication made from similar mechanisms.

In addition to the foregoing, it will also be noted the possibility of adding, to the movement described, a mechanism for determining the sunrise and sunset times, for example, from which the control wheel 95 would be driven to allow a adaptation of the hours of change of the day-night indication throughout a year.

In addition, the display of the value of the power reserve has also been exposed for illustrative purposes. It is of course conceivable to display other information, especially in a timepiece of the electromechanical type. In the case of an implementation of the invention in a timepiece of the mechanical type, the number of barrels is also not limiting, as is the use of a differential gear.

Claims (17)

Indicating needle (35, 100) for a timepiece comprising a base (36) intended to be driven by a drive member (33) of a watch movement to rotate along a first axis of rotation, said base being extended by a first index portion (40, 44, 45) intended to cooperate with graduations of the timepiece,
characterized in that said first index portion defines a support for a second index portion (46, 70, 101, 102) provided with a radial or conical toothing (48, 77), with reference to a second axis of rotation substantially perpendicular to said first axis of rotation, and intended to be rotated relative to said support, along said second axis of rotation, by a driving wheel (50, 78) of said clock movement. Indicator needle according to claim 1, characterized in that said base (36) comprises a barrel (46, 70, 101, 102) of axis coinciding with said first axis of rotation, said first index portion being defined by a shaft (40) extending substantially perpendicular to said barrel from said base. Indicator needle according to claim 1 or 2, characterized in that said first portion carries a retaining element (44), at a distance from said base (36), defining an axial stop for said second index portion (70), said axial stop (44) also providing an angular positioning function of said second index portion (70, 101) with respect to said base (36). Indicator needle according to claim 3, characterized in that it comprises elastic means (71) arranged to exert a force on said second index portion (70, 101) tending to hold it against said axial stop (44) while allowing it to deviate from said axial stop to rotate on itself. Indicator needle according to any one of the preceding claims, characterized in that said second index portion (46, 70, 101, 102) has graduations relating to the value of a parameter related to said watch movement or relative to a quantity schedule. Indicator needle according to any one of claims 1 to 4, characterized in that said second index portion (70) has at least a movable window (75) arranged to move to make apparent or conceal a visual cue representative of the angular position of the latter relative to said base (36). Indicator needle according to any one of the preceding claims, characterized in that it comprises a third index portion (46, 102) coaxial with said first (40) and second portions (70, 101) being arranged between them, that it being intended to be rotated relative to said support, by said clock movement, along said second axis of rotation and independently of said second index portion. Indicator needle according to claim 7, characterized in that said third index portion (46, 102) also comprises a radial or conical toothing (48) with reference to said second axis of rotation, intended to cooperate with an additional drive tooth (49) of said watch movement. Watch movement comprising a finishing gear (12, 13) kinematically connected to means (33) for rotating at least one indicator needle base (36) (35, 100) along a first axis of rotation substantially perpendicular to a general plane of movement, said base (36) being integral with a first index portion (40, 44, 45) intended to cooperate with graduations of the timepiece,
characterized in that it further comprises at least one additional drive wheel (50, 78, 80) arranged to drive a second index portion (46, 70, 101, 102) of said indicator hand, supported by said first index portion, rotating along a second axis of rotation substantially perpendicular to said first axis of rotation. Clock movement according to claim 9, characterized in that said additional drive wheel (50, 78, 80) has a radial or conical toothing intended to be arranged in engagement with a radial or conical toothing (48, 77) of said second index portion (46, 70, 101, 102). Clock movement according to claim 10, characterized in that said additional drive wheel (78, 80) is arranged in such a way that it periodically drives said second index portion (70, 101) to that it makes a half-turn on itself to have a first or second distinct angular positions. Clock movement according to claim 11, characterized in that it comprises a whip mechanism (85, 90, 92, 98) actuated to control the movements of said additional drive wheel (78, 80). Clock movement according to claim 10, comprising a power source (2, 3) having a predefined power reserve, characterized in that said additional drive wheel (50) is controlled to associate the angular position of said second portion of power. index (46, 102) to the value of said power reserve at each moment. Clock movement according to claim 13, further comprising a winding mechanism (60) connected to an inlet (9) of said energy source (2, 3), the latter also comprising an outlet (10) connected to said finishing gear train (12, 13), the movement further comprising a differential gear (16) having a first input (17) kinematically connected to said input (10) of said power source, a second input (18) cinematically connected to said output (10) of said power source (2, 3) and an output (19, 51) kinematically connected to said additional drive wheel (50). Clock movement according to claim 14, characterized in that it comprises a first (9, 17) and a second (10, 18, 21, 22, 23) gear arranged, respectively, between said input (9) of said source of energy and said first input (17) of said differential gear and between said output (10) of said power source and said second input (18) of said differential gear (16), said first and second gear having gear ratios respective different. Clock movement according to any one of claims 9 to 15, characterized in that it comprises additional drive means (50, 78, 80) arranged to allow the driving in rotation of a third index portion ( 46, 70, 101, 102) of said indicator needle (35, 100), coaxial with said first (40) and second index portions, along said second axis of rotation. Timepiece comprising a box closed by an ice-cream and defining a housing in which a watch movement according to any one of Claims 9 to 16 is arranged, said movement being arranged so as to cause an indicator needle (35, 100) according to any one of claims 1 to 8, the latter evolving between said movement and said ice.

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