DISPLAY MECHANISM OF A CLOCK WITH SEPARATE DISPLAY ELEMENTS

Description

Scope of the invention

[0001] The invention relates to a clockwork display mechanism, for a clockwork part, comprising at least one three-dimensional display support, which is arranged for the simultaneous display of at least one first quantity on a first three-dimensional display under the action of a first control mechanism, and of a second quantity on a second three-dimensional display under the action of a second control mechanism.

[0002] The invention also relates to a timepiece, in particular a watch, comprising such a display mechanism.

[0003] The invention relates to the field of watch display mechanisms, for complicated watch parts. Arrière-plan de l'invention

[0004] The purpose of horological complications is to offer discerning users timepieces capable of performing complex functions and / or featuring innovative displays. The challenge always lies in reconciling the highly elaborate mechanisms of these timepieces with the limited space available in watches, while ensuring clear and intuitive legibility for the user. Another constraint is the reliability of these mechanisms, which must go hand in hand with guaranteeing the chronometric accuracy of the base movement, which must not be compromised by the addition of complications.

[0005] An example of innovative display is provided by the Urwerk UR-202 watch model, which features a display consisting of telescopic hands rotating both around their longitudinal axis to display the current time and around a radial axis to indicate the minutes. Résumé de l'invention

[0006] The invention aims to create a watch with displays that are both innovative and extremely logical, and therefore easy for the user to read.

[0007] For this purpose, the invention relates to a clockwork display mechanism, for a clockwork part, comprising at least one three-dimensional elementary display support, according to claim 1.

[0008] The invention also relates to a timepiece, in particular a watch, comprising such a display mechanism. Brief description of the drawings

[0009] Other features and advantages of the invention will become apparent upon reading the detailed description that follows, with reference to the attached drawings, where: there figure 1represents, schematically, partially, and in front view, the upper face of a watch comprising a display mechanism according to the invention, which adopts the form of a double-star aircraft engine comprising twelve fixed cylinders arranged in a double star.Each cylinder displays, on the one hand, the time, in the form of a rotating display, the active cylinder being the one which displays the hour number(s) directly in front of the user, here the 12 o'clock cylinder in this figure, and on the other hand one of the twelve five-minute segments, the active cylinder being the one which displays to the user a visual reference, for example a very visible colored mark, which includes a movable flap relative to a piston which is movable in the cylinder, radially relative to the central axis of the watch, in an elementary direction; the estimation of the minute in a five-minute segment is done by radially locating the position of the piston relative to the central axis of the watch.Each cylinder has a transparent section through which the user can see an openworked dial bearing one or two numerals indicating the time displayed by the cylinder, and rotating within its cylinder; this openwork dial surrounds a piston, which moves back and forth within this cylinder, independently of the movement of the openwork dial; this piston itself has a sliding valve, visible in other figures. The central part of the mechanism reveals a portion of the display drive mechanism, and in particular a crankshaft rotating around the central axis of the watch movement, which drives a connecting rod that transmits the reciprocating motion to all the pistons; the. figure 2 represents, in a similar way to the figure 1 the underside of the watch figure 1The transparent case back reveals the watch's power supply barrels, specifically designed to drive the display; figure 3 represents, schematically and in perspective, part of the display control mechanism, with a first drive unit dedicated to driving the pistons, and which includes this crankshaft, two crankpins of which support two plates, each of which has a large fixed connecting rod and five small connecting rods articulated on plate pins; the figure 4 represents, schematically, partially, and in cross-section through an elementary axis of one of the cylinders, the inner part of that same cylinder located under the transparent envelope of the figure 1, and which includes an hour body, which is the openworked moving part bearing the hour numeral(s), which coaxially surrounds the piston, whose control rod, articulated to a piston pin, is visible; the valve is coaxially movable with the piston and includes an optical indicator, a visual marker, here hidden from the user's view in this view, which represents an inactive cylinder for displaying minutes: the valve is pressed against the piston, and its valve spring rests on a catch piece integral with the piston; the figure 5represents, schematically, partially and in perspective, another part of the display's drive mechanism, and its control mechanism, with a second drive unit dedicated to driving the hour hands, comprising a central wheel with an annular bearing whose straight internal teeth mesh with straight intermediate pinions; these pinions each mesh with a straight-toothed plate which carries a conical intermediate wheel; the latter meshes with a 45° straight-toothed drive, which engages a conical hour pinion fixed to the hour hand bearing the hour numerals; the figure 6 This schematic, partial representation, without the supporting structure, shows a portion of the moving components of the display mechanism. In a variant where the hour hands are transparent moving parts with hour markings, this figure illustrates the interaction of the connecting rods of the figure 3with the pistons arranged in the cylinders; at the 12 o'clock position in the figure, the hour body displays the time with the number 12, while at the two o'clock position, the valve is at the end of its maximum travel relative to its piston, and reveals the optical indicator, for example in the form of a colored band or similar, in the groove thus formed in the space between the piston body and the valve, for a period of time limited to 5 minutes; the figures 7 to 9 illustrate the rotation of the hour numeral within its cylinder: the figure 7 shows the hour number 11 of the figure 6, surmounted by its dynamic pointed index, which approaches the static pointed index linked to the cylinder structure; this hour numeral approaches the position that will make this cylinder the active cylinder for displaying the hours, the static index is carried by a ball bearing, fixed to the structure, and which guides the hour body at the level of its hour pinion; the figure 8 shows a configuration where the hour digit 2 of the figure 6 is not visible, since it is hidden in the rear part of the cylinder; however, this detail clearly shows the valve at the end of its maximum travel relative to its piston, revealing the optical indicator in the groove temporarily formed in the space between the piston body and the valve; the valve is in its extended position, and this cylinder is therefore the one displaying the current five-minute interval; the figure 9 shows the hour number 12 of the figure 6, surmounted by its dynamic index, which is in accordance with the static index, and thus indicates the current time: in this figure, the twelve o'clock cylinder is the active hour cylinder: the number twelve faces the user, and the dynamic index carried by the hour body is aligned with the static index carried by a fixed part, in this case a ball bearing guiding the rotation of the hour body; the Figure 10 illustrates a variant where the cylinder structure bears radially spaced graduations, for displaying each minute within a 5-minute interval, corresponding to the most eccentric end of the piston; the figure 11 is a side view of a timepiece, in this case a wristwatch, showing the mechanism of the figure 1 , and which shows the alternation on two parallel levels of two stars, each with six cylinders; the figure 12represents, in a schematic, partial and partially exploded perspective, a part of the figure 6 , on which one can distinguish in the center the radial piston drive mechanism, comprising a crankshaft to which the connecting rods (not shown) are articulated, on two superimposed stages, and on the periphery the rotating drive gears for the hour numerals in the cylinders; the figure 13 is a magnified detail of the figure 12 showing only the rotating drive gears of the hour numerals; the figure 14 is another detail of the figure 6Here, we see the fixed and articulated connecting rods originating from the crankshaft plates; we also distinguish six feelers, each designed to cooperate with two consecutive cylinders, for controlling the extension or retraction of the valve relative to the piston: each feeler has, projecting from the upper part of a bracket parallel to the main axis of movement, two upper arms, each designed to cooperate with a valve of a cylinder for its operation; the rotational control of these feelers is achieved by a cam in the lower part, not visible in this figure, which cooperates with two lower arms forming a V, which are fixed to this bracket; this cam controls the movement of the feelers that penetrate the cylinders, and of which, at any given instant, only one controls the extension of the valve relative to the piston for identifying its cylinder as the active cylinder for displaying the minutes; the figure 15 represents, in a similar way to the figure 14The lower part of the mechanism, where the cam controlling the rotation of the feelers is visible, here attached to a movable minute ring; in another variant not shown, this cam may have limited angular mobility relative to the movable minute ring, notably through the cooperation of a pin with an oblong slot in a circular sector; the figure 16 , similar to the figure 15 , shows the drive mechanism, driven by the movement of a toothed ring synchronizing the rotating drive gears of the hour numerals; the figure 17 is a top view of the connecting rod assembly that controls the radial movement of the pistons; the figure 18 is a cross-section of this connecting rod assembly, passing through the crankshaft axis and one of the fixed connecting rods; the figure 19 is a perspective view, cut by a plane passing through the central axis, and partial, of the crankshaft and its plates; the Figure 20is a schematic, perspective view of a cylinder and the control elements for rotating the hour numeral by gear train, for the radial translation of the piston by the movement of a connecting rod, and for the radial translation of the valve by rotating the feeler; the piston is guided by two guide rods fixed to the structure of the watch case; the figure 21 is a view similar to the figure 20, which shows, above and coaxially with the piston, the hour numeral, itself surmounted by a tubular hour marker, transparent at least from the user's perspective when viewing the watch from the front; behind the connecting rod that drives the piston's movement, one can see a feeler with an axis parallel to that of the crankshaft, one upper arm of which penetrates the cylinder to actuate the valve, the other upper arm being designed to cooperate with a neighboring cylinder not shown; one can also see in the lower part two lower arms arranged in a V shape, their points on the axis of the feeler's shank, this V being arranged to follow the large, roughly annular cam visible on the Figures 15 And 16 ; there figure 22 is a cross-section, by a plane passing through the crankshaft axis, of the part of the mechanism illustrated by the Figure 20; we see a right-angled jumper, pivoted on the apex of its right angle, which cooperates with one of the notches of a hook attached to the flap, to hold the latter in one of its two positions; here the flap is in the retracted position, and the cylinder in question does not display the current minutes; the figure 23 is a view perpendicular to the crankshaft axis of the part of the mechanism illustrated by the Figure 20 The probe is this time shown in a top view, displaying its two upper arms and its two lower arms which form a 120° V-shape; figure 24 is a view similar to the figure 6 , where the supporting structure is represented, with a single cylinder shown assembled in position; this structure may be the movement plate, or an additional board, or even the watch case; the figure 25is a schematic, cross-sectional perspective view of a cylinder and the control elements for the radial translation of the valve, from the control probe to the retaining jumper; the figure 26 illustrates a variant where the pivoting feeler is replaced by a feeler having a substantially radial stroke relative to the cam, onto which it is pressed by a jumper resting on the watch structure; the figure 27 is a functional block diagram of a first variant of a timepiece comprising a display mechanism according to the invention; the figure 28 is a functional block diagram of a second variant of a timepiece comprising a display mechanism according to the invention; the figure 29 represents, schematically and in perspective, a watch comprising a display mechanism according to the invention. Detailed description of preferred embodiments

[0010] The invention relates to a timepiece, in which the display of quantities is distributed across several entities, each activated at a particular time.

[0011] In particular, the display of time values ​​is broken down into segments, specifically segments of equal size. For example, when displaying the time, among 12 or 24 entities, only one entity displays the current time at any given moment. Rather than juxtaposing different entities for different displays, the invention focuses on using the same entity to display two different time values, for example, hours and minutes. Choosing 12 entities to display the hours leads to using these same entities to display the minutes in 5-minute increments. Any rational combination of multiple integers allows for logical displays. Conversely, displaying the time using 24 entities would logically lead to displaying the minutes in 2.5-minute increments on each entity, which is impractical but may be sufficient for street furniture clocks or similar applications.

[0012] The invention relates to a clockwork display mechanism 100 for a timepiece 1000, in particular a watch, comprising at least one three-dimensional display support 10, arranged for the simultaneous display of at least one quantity on a first three-dimensional display 901 under the action of a first control mechanism, and a second quantity on a second three-dimensional display 902 under the action of a second control mechanism. According to the invention, the first display 901 surrounds the second display 902, or vice versa. In an alternative embodiment not shown, the first display 901 surrounds the second display 902 and are juxtaposed within the same display support 10.

[0013] According to the invention, the first control mechanism and the second control mechanism are operative independently of each other, and constitute distinct mechanisms, one for control in translation and the other for control in rotation, or vice versa.

[0014] More specifically, the display mechanism 100 comprises a plurality of such elementary display supports 10. And, at any given instant, only one first display 901 displays the instantaneous value of the first quantity, and only one second display 902 displays the instantaneous value of the second quantity.

[0015] The display mechanism 100 further includes first optical means to signal to the user which first display 901 displays the instantaneous value of the first quantity, and includes second optical means to signal to the user which second display 902 displays the instantaneous value of the second quantity.

[0016] According to the invention, at the level of each elementary display support 10, the first display 901 or the second display 902 includes, for the determination of its instantaneous validity, an optical indicator 14 which is visible to the user only when the display 901 or 902 which carries it displays the instantaneous value of the quantity which this display 901 or 902 displays. This display includes a flap 16, which is movable between an activated position where the flap 16 shows the optical indicator 14 and a deactivated position where the flap 16 hides the optical indicator 14 from the user. The display mechanism 100 includes an actuator 2, which is arranged to control the movement to the activated position of the flap 16 at the level of only one elementary display support 10 at a time, and to control, at the same time, the switching to the deactivated position or the holding in the deactivated position of the flaps 16 of all the other elementary display supports 10.The function of this flap 16 is to show the user which display is valid at a given moment; the illustrated variant specifically indicates which five-minute period is currently in progress. However, such a flap can also serve as a third or fourth display, for additional information such as day / night, AM / PM, time zone, or other.

[0017] In a visualization variant, at the level of each elementary display support 10, the first display 901 or the second display 902 has, for the determination of its instantaneous validity, a dynamic index 307, which is movable relative to a static index 308 carried by a fixed part of the display mechanism 100. This dynamic index 307 and this static index 308 are arranged to come into alignment or superimpose, when the display 901 or 902 which carries it displays the instantaneous value of the quantity which this display 901 or 902 displays.

[0018] More specifically, the display mechanism 100 comprises a plurality of distinct elementary display supports 10 on which the display of at least one first quantity and / or a second quantity is decomposed, by splitting it onto distinct areas. More specifically, these distinct elementary display supports 10 have identical mechanical components; only the display elements may differ from one to another. These are referred to here as "similar" elementary display supports 10.

[0019] More specifically, all elementary display supports 10 include display indicators of the same type, which are either first displays 901 for displaying a first quantity, or second displays 902 for displaying a second quantity, or both first displays 901 and second displays 902. All display indicators are arranged so as to be visible to the user of the timepiece 1000, and the display mechanism 100 includes a control mechanism 300, which is arranged to drive wheels or drive linkages of the various display moving parts included in the display mechanism 100.This control mechanism 300 includes a first driver 111, arranged to be driven by a clockwork movement 200 and to drive all the first displays 901 on its own when it has any, and / or includes a second driver 112, arranged to be driven by a clockwork movement 200 and to drive all the second displays 902 on its own when it has any.

[0020] More specifically, the display mechanism 100 comprises, in each elementary display support 10, at least a first display 901 and a second display 902, which are coaxial with each other.

[0021] More particularly, the actuator 2 includes a cam which is arranged to control, directly or indirectly through at least one two-arm rocker, the stroke of at least one feeler 19 to push a valve 16 along a linear stroke, this feeler 19 being returned to support towards the cam 2 by elastic return means 190 or 497.

[0022] More specifically, the display 901 or 902, which includes an optical indicator 14 and a flap 16, has a movable support or piston 8, relative to which the flap 16 is movable between the activated position, where the flap 16 reveals the optical indicator 14, and the deactivated position, where the flap 16 hides the optical indicator 14 from the user. This optical indicator 14 is, in particular, but not exclusively, supported by the movable support or piston 8 or by the flap 16.

[0023] More specifically, the valve 16 is linearly mobile between an activated position and a deactivated position relative to the mobile support or piston 8, which is itself linearly mobile in the same direction between two end-of-stroke positions.

[0024] More specifically, each first display 901 is animated by a periodic movement, and each second display 902 is animated by a periodic movement, and the step of one of the two is an integer multiple of the step of the other, or vice versa.

[0025] More specifically, the display mechanism 100 comprises a single elementary display support 10, and the first display 901 and the second display 902 are arranged for displaying hours and minutes, or for displaying minutes and seconds. For example, this mechanism can take the form of a single-cylinder engine comprising a rotating cylinder liner and a reciprocating piston, each constituting one of the displays.

[0026] More particularly, the display mechanism 100 comprises a plurality of similar elementary display supports 10, each first display 901 being arranged to display a limited amplitude range which is an integer submultiple of the total display range of the first quantity, and each second display 902 being arranged to display a limited amplitude range which is an integer submultiple of the total display range of the second quantity.

[0027] The invention further relates to a timepiece 1000, in particular a watch, comprising a timepiece movement 200 arranged to drive at least one such display mechanism 100. More particularly, this display mechanism 100 comprises a control mechanism 300 which includes at least one first driver 111, arranged to be driven by a moving part of the timepiece movement 200, in particular a minute moving part, and / or a second driver 112 arranged to be driven by a moving part of the timepiece movement 200, in particular an hour moving part, to drive directly or indirectly each first display 901 and each second display 902.

[0028] The invention is illustrated here, at the level of the figures, by a non-limiting variant, in the form of a timepiece 1000, which is here a wristwatch, in the shape of a double-star aircraft engine, and which includes such a display mechanism 100, and where the display is achieved: hours by means of machined hour bodies 30, operated by a gear train; minutes by means of pistons 8 operated by a crankshaft comprising at least one crankshaft 1 and connecting rods 4 and 5.

[0029] This clockwork display mechanism 100 comprises a plurality of distinct elementary display supports 10, each extending in a direction parallel to or coinciding with an elementary radial axis DA, and all distributed around a central axis D. The elementary axis DA is, in particular, a radial axis perpendicular to the central axis D, or is a direction parallel to such a radial axis. The clockwork component 1000 takes the form of a radial or double-radial aircraft engine, each radial cylinder containing, but not limited to, an elementary display support 10.

[0030] This display mechanism 100 is arranged to display the value of at least one quantity on the plurality of elementary display supports 10.

[0031] More specifically, each elementary display support 10 is a substantially cylindrical body, extending radially from the central axis D around a structure 900, and which is radially salient from the structure 900.

[0032] This elementary display support 10 contains at least one display indicator for the value of a quantity, which display indicator is either a first display 901 movable in translation along its elementary axis DA, or a second display 902 movable in rotation around its elementary axis DA.

[0033] More particularly, the first display 901 and the second display 902 are either both movable in translation along a direction parallel or coincident with an elementary radial axis DA which is perpendicular to the central axis D, or both movable in coaxial rotation with respect to a direction parallel or coincident with such an elementary radial axis DA, or one of the first display 901 and second display 902 is movable in translation along a direction parallel or coincident with such an elementary radial axis DA and the other of these first display 901 and second display 902 is movable in rotation with respect to a direction parallel or coincident with such an elementary radial axis DA.

[0034] According to an advantageous embodiment of the invention, all the elementary display supports 10 are similar, and include display indicators of the same nature, which are either first displays 901 for displaying a first quantity, or second displays 902 for displaying a second quantity, or both first displays 901 and second displays 902. More particularly, the display indicators 901, 902 are substantially of revolution, in particular cylindrical in shape.

[0035] And the display mechanism 100 includes a control mechanism 300, which is arranged to drive, around the common axis D, wheels or drive linkages of the various display mobiles included in the display mechanism 100.

[0036] More particularly, the display mechanism 100 includes a first display 901 in each elementary display support 10, and each first display 901 includes a first optical indicator 14, which is hidden or not by a flap 16 which is linearly movable along the direction of the elementary axis DA, between an activated position and a deactivated position, for the validation or respectively the invalidation of a value of the first quantity.

[0037] And the control mechanism 300 includes a first actuator which is arranged to control, at the level of a single elementary display support 10 at a time, the activation or maintenance of the activated position of the flap 16, and to control, at the same time, the deactivation or maintenance of the deactivated position of the flaps 16 of all the other elementary display supports 10.

[0038] More particularly, this first actuator includes a cam 2 which controls, directly, or indirectly through at least one two-armed rocker, the stroke of at least one feeler 19 to push along a linear stroke such a valve 16, which is arranged to hide or show a first optical indicator 14. Advantageously, this cam 2 is very simple, is flat, and includes, in relation to an annular structure, a protuberance 201 concentric to this annular structure, and projecting radially outwards, connected by two radiating ramps 206.

[0039] In the variant illustrated by the figure 26, the feeler 19 has a straight foot 490, which has an oblong guide 496 around a screw bearing directly on the cam tracks which extend on the edge of the cam 2: upper 208, lower 209, and ramps 206, and the U-shaped part 495, furthest from the center of the cam 2, directly controls the valve 16.

[0040] In another variant illustrated by all the other figures, the feeler 19, which has, at the upper end of a support, a first upper arm 191 for controlling the valve 16 of a first cylinder, and a second upper arm 192 for controlling the valve 16 of a second cylinder, is rotated by a pivoting rocker in the lower part of this support. This rocker has two lower arms, which together form a V-shape that rests on the circumference of the cam 2 and follows this circumference. This rocker pivots in one direction during its ascent onto the protrusion, and then in the opposite direction during its descent. In the illustrated example, the cam 2 drives the minutes and makes one rotation per hour.

[0041] More specifically, the probe 19 includes at least one elastic arm 190, or 497, depending on the variant, which is arranged to bear against the structure 900, or 498, and which tends to push the probe 19 towards the cam 2.

[0042] The valve 16 is movable in translation parallel to a direction parallel or coincident with an elementary radial axis DA, or is movable in rotation with respect to a direction parallel or coincident with an elementary radial axis DA.

[0043] More specifically, each flap 16 moves linearly between an activated position and a deactivated position relative to a movable support 8, which is part of the first display 901, and which is itself linearly movable along the same direction of the elementary axis DA, between two end-of-stroke positions. More specifically, each movable support 8 is a piston, moving linearly between its two end-of-stroke positions with a periodic motion.

[0044] More particularly, the first display 901 includes a jumper 17, notably in the shape of a right angle, which is arranged to hold the flap 16, in the engaged position, against a hook piece 18 which is fixed to the movable support 8, or piston, notably at the level of a notch, and to allow its release during the recoil of the probe 19 and the reversal of the direction of the movable support 8.

[0045] More specifically, the display mechanism 100 includes a first display 901 in each elementary display support 10, and the first drive 111 includes a crankshaft 1, which is arranged to be driven by a clockwork movement 200. At least one crankpin 41 of this crankshaft 1 drives at least one plate 40, which carries connecting rods, fixed 4, or articulated 5, each arranged to move a first display 901 in a linear reciprocating back-and-forth motion.

[0046] In an unillustrated variant, the display mechanism 100 includes a second display 902 in each elementary display support 10, and each second display 902 includes a second optical indicator which is linearly movable along the direction of the elementary axis DA, between an activated position and a deactivated position, for determining a value of the second quantity, and the control mechanism 300 includes a second actuator which is arranged to control, at the level of a single elementary display support 10 at a time, the activation or holding of the second optical indicator, and to control, at the same instant, the deactivation or respectively holding of the second optical indicators of all the other elementary display supports 10.

[0047] More specifically, the display mechanism 100 includes a second display 902 in each elementary display support 10.

[0048] In the illustrated variant, the second display 902 comprises a tubular body 30, which bears at least one identification marking and which includes at least one cutout and / or a transparent surface to allow the user to see any component of the display mechanism 100 housed in the tubular body 30.

[0049] In the illustrated variant, the 300 control mechanism includes a gear train with return mechanisms to drive all the second 902 displays in a synchronized manner.

[0050] More specifically, each elementary display support 10 has a chamber, which is sealed to the external environment of the timepiece 1000 carrying the display mechanism 100, and in which each display indicator 901, 902 is movable.

[0051] In a particular embodiment as illustrated by the figures, structure 900 is an additional board arranged to be placed on top of a clockwork movement 200.

[0052] In another embodiment, structure 900 is the case or box of timepiece 1000 containing a timepiece 200.

[0053] More specifically, the display mechanism 100, or the clock movement 200, includes, at the interface between the display mechanism 100 and the clock movement 200, an adjustable friction mobile, in contact with the movement 200 to allow the adjustment, in particular the setting of the time, of the display mechanism 100 by the winding and setting stem of the movement 200.

[0054] Although the invention is described here for the particular case of a timepiece 1000 which makes circular type displays, centered on the central axis D of a timepiece movement 200, it is nevertheless feasible for other types of display, for example linear.

[0055] Similarly, although the invention is described for a continuous type mechanism, making a revolution of the dial, it also remains adaptable to retrograde type displays.

[0056] In the variant illustrated in the figures, the timepiece 1000 adopts the general shape of a radial, or more precisely double-radial, aircraft engine, with two stages of cylinders 10, which are radial with respect to a central axis D, and axially offset to cooperate with two stages of the crankshaft 1, like the famous 18-cylinder double-radial Pratt & Whitney R-2800 aircraft engine. These cylinders 10 are fixed to, and surround, a structure 900. This structure 900 can be the case or the case of the timepiece, or an element added to this case or case such as an additional plate, and the cylinders 10 can project radially from this structure, as illustrated.

[0057] Naturally, this 1000 timepiece can also adopt a simple star shape, with all the cylinders in the same plane. The specific, but not limiting, choice of a multi-level star display is primarily intended to simplify the movement's distribution mechanism within the cylinders, while keeping the timepiece's diameter to a reasonable size.

[0058] Each cylinder 10 has a transparent section, consisting of a casing 20, through which the user can see at least one display element. Depending on the chosen configuration, these elements can be solid, openworked, or transparent and marked. The number of cylinders chosen depends on the application: for example, but not limited to, three, six, twelve, or twenty-four for displaying the hour; six, ten, twelve, or fifteen for displaying the minutes or seconds; seven for displaying the day of the week; three, four, six, or twelve for displaying the month; four, six, eight, or twelve for displaying the date; four for displaying the year (simple or leap year). The only limits are those of the complexity and size of the mechanism associated with the chosen complication.

[0059] More specifically, in this embodiment illustrated in the figures, the hours are displayed by means of indexes consisting of twelve rotating hour bodies 30, each housed in a cylinder 10 (six per level in this particular embodiment), with each index rotating once every 12 hours. A separate display shows the minutes, in five-minute increments, by twelve pistons 8, which move linearly within the twelve hour bodies 30. The current five-minute increment is indicated by an optical indicator 14, made visible by a flap 16 open at the level of the relevant piston 8, and easily visible to the user.

[0060] The hours are thus displayed on substantially cylindrical hour bodies 30, housed in the cylinders 10. These hour bodies 30 may include cut-out metallic cylindrical cages, or the like, or tubes of transparent material, in particular sapphire or the like, bearing a marking, by metallization or laser engraving or otherwise, with the corresponding hour numeral(s) 301; the movement 200 of the timepiece 1000 drives each hour body 30, cage or tube so as to make two turns in 24 hours.

[0061] Each cylinder 10 has a sealed casing 20 for receiving the hour hand 30, which surrounds a piston 8. This casing 20 is transparent on at least one side, visible to the wearer of the watch for reading the time, and is made, for example, of sapphire or a similar material. This cylinder 10 may be attached to the structure 900 or the case of the watch, or it may be part of this structure 900, this case, or the watch case. The cylinder 10 whose legible numeral inscription on its hour hand 30 directly faces the wearer is the active cylinder, which provides the display of the current time.

[0062] Advantageously, this cylinder 10 which is active for displaying the time is visually materialized by the very visible alignment of a dynamic index 307 which is carried by the hour body 30, and a static index 308 which is carried by the cylinder 10, the supporting structure 900, the case, or the box.

[0063] This alignment can be visual, mechanical, electrical, or magnetic, so as to display an active hour cylinder indicator. For example, in a mechanical version, the hour marker 30 may have, on the side of the 900 structure, a lug, notch, or cam to cooperate with a rocker housed in the 900 structure opposite the cylinder, the pivoting of which reveals a flag in an aperture, as described in patent EP2595006 in the name of BLANCPAIN SA, or similar. In a magnetic version, the cooperation of magnets of the same or opposite polarity, carried by the hour marker 30 and the 900 structure, also allows for the activation of such a flag. In an electromechanical timepiece, an electrical contact aligned with the hour markers of the hour marker 30 and the 900 structure allows for the control of a lighting function, or other function.

[0064] Similarly, among the different cylinders 10, only one cylinder 10 is active at any given time for displaying the minutes. The display of the cylinder 10 that is active for displaying a 5-minute segment is achieved by highlighting an optical indicator 14, in particular by highlighting the opening of the valve 16, for example located at the distal end of the piston 8, opposite the connecting rod, visible by a very visible colored marker, for example a colored surface 140, red or similar; it is understood that this valve 16 is, at any given time, open at the level of only one cylinder 10, and closed on all the others; at the end of a 5-minute segment, the valve 16 closes on the piston 8 of the cylinder 10 that has just displayed the minutes, and opens on the piston 8 of the next cylinder 10, preferably in a clockwise direction;

[0065] In a particular variant, in each 5-minute segment, the current minute is displayed by means of graduations 306 placed on the cylinders 10, or on the envelopes 20, or on the hour bodies 30; these graduations 306 can be equidistant, or as here non-linear, because they depend on the kinematics of the connecting rod used; a mark on the piston 8, or the distal end of the piston 8, or the colored mark 140 on the valve 16, is easily readable opposite this graduated scale.

[0066] The illustrated design represents a good compromise between readability, aesthetics, and the available space for housing the various mechanisms. In this particular, but not exhaustive, case, it includes: a conical gear train, driven by the movement 200 of the watch 1000, and arranged to drive the hour bodies 30 in rotation; at least one central crankshaft 1, arranged to drive the pistons 8 in a back-and-forth translational movement in their respective hour bodies 30; a piston valve release mechanism 16, revealing a colored marker 140 on the piston 8 concerned by the current minute segment, thus improving the legibility of the time.

[0067] The hour display includes in particular a 30 hour body which is a metal component with cut-out hour numerals 301, which improves visibility and readability.

[0068] The crankshaft assembly is necessarily complex, due to the number of twelve moving parts to be driven in this particular case. While a crankshaft plate with twelve connecting rods is conceivable, the size and fragility of the mechanism make solutions with several crankshaft plates 40 preferable, each driving a submultiple of 12: the illustrated version has two superimposed crankshaft plates 40, each capable of driving six pistons, with their triggering mechanism allowing the differentiation of piston 8 which displays the current minute.

[0069] A sufficiently large power source is necessary for a watch of this size, for example, with a case diameter of approximately 43 mm and an overall diameter of approximately 53 mm at the cylinder heads, with cylinders generously sized for visibility (10 to 12 mm high and 8 to 12 mm in diameter), to guarantee a sufficient power reserve of over 50 hours. Indeed, the torque at the crankshaft is on the order of 3 N·mm. Therefore, it is chosen to install several mainspring barrels, for example, each with a capacity of 8 or 9 N·mm: a configuration with four such barrels in parallel allows for the delivery of a high torque, thus providing such a power reserve. Other variations are possible, including, but not limited to, two pairs of barrels in series, placed in parallel to increase the power reserve, or even three barrels to save space.

[0070] The 200 movement transfers energy, via gears, to a movement output unit which drives the crankshaft 1, a minute trigger cam 2, and the hour pinions 3.

[0071] The crankshaft 1 is a key component, both for its timing function and its visual impact. Due to its numerous functions, it requires an extremely precise component; therefore, it is advantageous to have a one-piece design, guided between a stone on one side and a screw-in bearing on the other. This arrangement limits the risks of positioning errors due to overhang and those related to the cumulative tolerances of an assembly, and also ensures the component's reliability, maintaining its high precision over the long term.

[0072] In the illustrated version, which has two crankshaft journals 40, each of these two journals 40 pivots around a crankpin 41 of the crankshaft 1. Each journal carries six connecting rods, one of which can be fixed to the journal to form a large, fixed connecting rod 4. The other small, articulated connecting rods 5 pivot on journal pins 7 pressed into the journal 40. The rotation of the large connecting rod must be as smooth as possible. A damper hub 6 is advantageously positioned between the crankpin 41 of the crankshaft and the associated journal 40. A nickel-PTFE galvanic treatment provides a pivot point with good anti-seize and self-lubricating properties; the static friction coefficient can thus be reduced to 0.15, and the dynamic friction coefficient to 0.10. This same galvanic treatment is also advantageously applied to the connecting rod-pin connections.

[0073] Each connecting rod 4, 5, fits inside a piston 8, which has a retaining pin 9 in a radial bore around which its connecting rod pivots. The piston 8 must operate freely with a degree of freedom perpendicular to the connecting rod in question; to this end, the piston 8 has an opening for the passage of this connecting rod that is large enough to allow the maximum working angles of the connecting rod. The retaining pin 9 is difficult to access for maintenance, and the piston 8 moves in an area highly visible to the user; therefore, it is preferable to avoid any liquid lubrication that would cause at least visual contamination. The connection between the retaining pin 9 and its respective connecting rod is preferably also treated with a galvanic coating of the Nickel PTFE type or similar.

[0074] Piston 8 must have the best possible guidance, both precise and very smooth to prevent any risk of seizing and blocking of the mechanism.

[0075] Among the possible solutions, the figures illustrate guiding the piston 8 by two rods 12, here, but not limited to, positions inside a cylindrical sapphire tube 20. The piston 8 has two lateral notches 81 for receiving intermediate guides 13, or buffer pieces, which ensure the sliding guidance of the rods 12. Here too, a galvanic treatment of the Nickel PTFE type or similar is advantageous for reducing the coefficient of friction and achieving self-lubricating contact. The intermediate guides 13 are preferably substantially diametrically opposed, which ensures optimal spacing and good guidance of the piston 8 on these rods 12.

[0076] Another type of guidance consists of externally guiding the piston 8 on the inner wall of a transparent tube 20, made of glass or sapphire, or similar, with in particular the interposition of buffer rings housed in circular grooves of the piston 8, and which buffer rings ensure guidance in this transparent tube.

[0077] To determine the current 5-minute period, the mechanism according to the invention triggers the corresponding piston 8 by closing the valve 16 of the piston 8 for the 5-minute period that has just ended, and by opening the valve 16 of the piston 8 for the new 5-minute period that is beginning. The opening of the valve 16, which is preferably located at the distal end of the piston 8, opposite the connecting rod, exposes a highly visible colored marker 140, for example, a red surface, a surface treated with a reflective material, or any other surface providing good visual contrast with the exterior of the piston 8. This visual marker 14 can naturally be used as an index, when the cylinder 30, or a transparent tube 20 comprising it, has graduations 306, to determine the current minute within the 5-minute period.

[0078] Advantageously, the piston 8 comprises a piston body 15 and a valve 16, which makes the visual marker 14 visible once triggered and otherwise conceals it, and which has a limited axial stroke relative to the piston body 15. The valve 16 is pushed radially outwards from the watch during triggering by a valve control mechanism, which will be described later. When the valve 16 is engaged, it is held in position by an elastic mechanism comprising a jumper 17 that holds the valve 16 against a catch piece 18 fixed to the piston body 15.

[0079] The valve control mechanism includes, more specifically, a minute wheel 201, in particular a minute ring or disc, which carries the cam 2 and is driven by the movement 200 of the watch 1000, making one revolution per hour. This cam 2 has a radial projection 202 with an upper track 208 of a diameter larger than that of a lower track 209 on the rest of the cam 2, to which it is connected by ramps 206. The cam 2 is arranged to radially push a feeler 19, specific to each piston 8, which is guided in a fixed part of the structure 900, the case middle, or the watch case, and which penetrates the piston 8 and is arranged to push the valve 16 upon activation. This feeler 19 advantageously includes a spring arm 190, which bears against this same fixed part, to ensure its retention on the cam 2.At the end of the 5 minutes, the feeler 19 leaves the upper track 208 of the salient 202 of the cam 2 and falls back onto the lower track 209, and the spring arm 190 pushes it back towards the center of the movement, thus releasing the valve 16.

[0080] The pistons 8 are engaged at the end of each 5-minute interval, when the piston 8 reaches the radial end of its respective cylinder, in its position furthest from the center of motion. The piston 8 is then moved by its respective connecting rod 4 or 5 against the jumper 17, also towards the center of motion, and this movement by the connecting rod re-engages the valve 16 of this piston 8 in the closed position.

[0081] The movement 200 drives a series of hour pinions 3, with one pinion 3 driving each hour hand 30. For example, the movement 200 drives a central brass wheel 309, having an annular bearing whose straight internal teeth mesh with straight intermediate steel pinions 302; these pinions 302 each mesh with a straight-toothed brass plate 303 which carries a conical intermediate steel wheel 304; the latter meshes with a 45° straight-toothed steel gearbox 305, which drives a conical hour pinion 3, also made of steel. The hour hand 30 is advantageously made of a light alloy, for example, aluminum or titanium alloy. The piston 8 and the valve 16 are preferably made of steel with a DLC or similar coating on their contact surfaces.

[0082] The figures illustrate the preferred variant where the hour bodies 30 are rigid structures, notably but not exclusively metallic. A machined tube representing the numeral(s) 301 of the hour displayed in a given cylinder 10 provides good legibility and is also easy to attach to the hour pinion 3 using traditional watchmaking methods: screwing, riveting, pressing, or other. As stated above, this numeral 301 is further advantageously complemented by a dynamic visual index 307 designed to align with a static index 308 so as to eliminate any doubt for the user. Each hour pinion 3 is preferably a conical pinion, which cooperates with a conical wheel 34, whose axis is parallel to the central axis D of the movement 200, either directly or, as here, through a 45° inclined drive 305 visible in the figures.The guidance of a block consisting of the hour hand 30 and its hour pinion 3 is advantageously achieved by a ball bearing block 22, fixed to the structure 900, or to the case or the box, which guarantees good positioning accuracy while ensuring low energy consumption due to friction. This ball bearing block 22 is advantageously combined in a sealed bearing with the at least partially transparent casing 20, which is used to enclose both the hour hand 30 and the piston 8 it contains.

[0083] Another variant already mentioned concerns a transparent hour body bearing the hour marking(s), and is rather to be reserved for static timepieces such as clocks where the tubular diameters can be large enough not to impair legibility; indeed, the existence of multiple reflections in two coaxial transparent tubular structures of small radius in a watch is likely to disturb the reading of the other minute display at the piston level.

[0084] It is understood that a temporary energy consumption occurs during each 5-minute interval change. The excess energy must be managed during the remaining time.

[0085] In a first variant, illustrated by the figure 27For optimal energy management, the timepiece 1000, which includes a timepiece movement 200, advantageously comprises a plurality of barrels 50 in parallel and / or in series, whose single resulting output 51 powers a speed-increasing gear train 52, which powers at least one crankshaft 1, which powers a constant-force remontoir 53, which powers the escapement 54, which cooperates conventionally with the oscillator 55. The parallel arrangement of the barrels 50 allows for the release of significant torque to the crankshaft 1. The constant-force remontoir 53 allows for the release of a known, controlled, and optimal force to the regulator 55.

[0086] In a second variant, illustrated by the figure 28and for the same purpose, the timepiece 1000 comprises two energy circuits, one for powering the crankshaft 1, and the other for powering the oscillator 55. At least two first barrels 501, or groups of barrels, are in parallel, powering the crankshaft 1 of the display mechanism 100 via a first speed-up gear 56, which is itself regulated by a first escapement mechanism 57 under the control of a geometric triggering mechanism 58. At least one second independent barrel 502, or group of barrels, powers the oscillator 55 through a second speed-up gear 59 and a second escapement mechanism 54. The geometric triggering mechanism 58 of the first speed-up gear 56 is kinematically linked to and regulated by the second speed-up gear 59, which is regulated by oscillator 55.The advantage of this slightly more complex solution than the first variant is to ensure that the accuracy of the watch's operation is not affected by any disruption related to the operation of crankshaft 1.

[0087] Although the invention is described here in a twelve-cylinder configuration, it is understood that it can be implemented, depending on the nature of the desired displays, with a different number of cylinders: 2, 3, 4, 6, or other. A coaxial display with a first and second display in a single cylinder is also possible.

[0088] Extrapolations may also include one or more cylinders 10 dedicated to different displays; for example, in addition to the hours / minutes display described here, a day / night or AM / PM display in a separate cylinder. Or a day / night or AM / PM display in a casing 20 coaxial with the minutes piston and the hour hand: for example, a cylinder 10 may include, from its axis to its periphery: the minutes piston 8, the hour hand 30, a transparent casing with day / night markings, and another transparent casing with AM / PM markings.

[0089] Or, 24-hour displays could be used, with specific colours or designs dedicated to morning displays and others to evening displays; it is then conceivable to keep twelve cylinders 10, with displays differentiated according to the time.

[0090] Naturally, the first displays 901 and second displays 902 can be reversed, with the first ones then surrounding the second ones.

[0091] A variant with a double transparent tubular envelope and a polarizer also allows for a special display.

[0092] We can still imagine the lighting of the active cylinder, or active cylinders, the hour and minute cylinders in the case of the present example.

[0093] In summary, the invention relates to a watch comprising a case containing a movement and a display mechanism, located between the case back and the crystal. This display mechanism comprises several distinct elementary displays.

[0094] The case typically consists of a case middle, a bezel with an upper glass panel, and a base with or without a lower glass panel.

[0095] The individual moving displays are each housed in an individual chamber that communicates with the main chamber containing the movement; the box's airtight seal ensures the airtightness of all the chambers. These individual displays are each housed in a protrusion forming an outgrowth of the box, each protrusion containing an individual chamber.

[0096] The display of the same clockwork quantity is distributed across several of these elementary displays.

[0097] Each elementary chamber resembles an engine cylinder, and the casing of this elementary chamber, formed by one of these protrusions, includes at least one transparent section, which is arranged to allow the user to see the position of the corresponding elementary display. A transparent section of each elementary chamber casing is on the side facing the crystal of the timepiece.

[0098] Each elementary display resembles a cage, or a moving engine piston in a cylinder, or a shuttle in a loom groove, and circulates in its own elementary chamber.

[0099] Each elementary display moves within its elementary chamber without contact with the internal surface of the protrusion.

[0100] Indeed, each elementary display has its own guide support: a bearing on which a rotating elementary display pivots, or a guide rod on which an elementary display slides in translation. Therefore, neither the internal surface of the elementary chamber's housing nor the external surface of the elementary display needs to be cylindrical. However, a cylindrical design, with significant radial clearance to prevent friction that could negatively impact performance, is both economical and aesthetically pleasing.

[0101] The supporting structure of this guide support is integral with the movement plate.

[0102] Each elementary display is animated by a linear movement, or rotation, within its elementary chamber.

[0103] The basic displays are arranged in a star pattern, and more specifically in a complete and regular 360° star pattern. More specifically, they are arranged around or above the movement.

[0104] The timepiece resembles a radial or double-star aircraft engine (two superimposed star levels), with each star containing one or more elementary displays. These elementary chambers are arranged radially around a common axis, around which a control mechanism drives wheels or linkages that power the various display elements. This drive is achieved via a cam mechanism, and / or crankshafts and connecting rods for linear movements, and / or a gear train for rotary movements.

[0105] The elementary chambers are arranged in a V-shape relative to each other.

[0106] Each elementary display is arranged to provide an indication of only a portion of the total range of the clockwork quantity being displayed. They are functionally connected in series, each displaying the instantaneous information in turn.

[0107] At any given moment, the path of each elementary display in its elementary chamber is different from the paths of other elementary displays in their respective elementary chambers.

[0108] The elementary displays have synchronous movements in their respective elementary chambers.

[0109] At any given moment, a single elementary display shows the instantaneous value of the quantity, and for this purpose the timepiece includes a triggering mechanism which moves a display indicator, specific to each elementary display, between an active position and an inactive position, this display indicator being visible to the user and allowing him to easily and quickly identify the elementary display which shows the instantaneous value of the quantity.

[0110] A single elementary chamber can contain several elementary displays of different types, superimposed on one another, notably nested one inside the other.

[0111] The watch features twelve openwork or transparent rotating cages for displaying the hours, which are driven from the movement by a gear train.

[0112] The watch features linear motion pistons for displaying the minutes, driven from the movement by a linkage and cams, via a crankshaft or camshaft system. These pistons move within rotating cages, allowing the user to see the longitudinal position of each piston.

[0113] Thus at any given moment a rotating cage presents the user with the complete reading of the time, a device indicates which of the cylinders it reads the minutes in (in five-minute increments), and the longitudinal stroke of the piston in the corresponding chamber determines the minute reading within the five-minute increment.

[0114] In one variation, the timepiece features linearly moving shuttles for displaying the minutes, driven from the movement by a linkage and cams. These shuttles circulate within rotating cages that are partially transparent or perforated, allowing the user to see the longitudinal position of each shuttle. Each shuttle is positioned above, or is positioned above, a display indicator, which is triggered by the mechanism to complete a linear movement relative to its corresponding shuttle, thus indicating to the user whether the time is active or inactive.

[0115] The invention makes it possible to create a highly dynamic, reliable and legible mechanical display of great complication, with a reasonable size that is compatible with a wristwatch.

Claims

1. Horological display mechanism (100) for a timepiece (1000), comprising at least one elementary three-dimensional display support (10), configured to simultaneously display at least a first quantity on a first three-dimensional display (901) under the action of a first control mechanism, and a second quantity on a second three-dimensional display (902) under the action of a second control mechanism, in which mechanism said first display (901) surrounds said second display (902) or conversely, said first and said second control mechanisms being operable independently of each other, and constituting distinct mechanisms, one for translational control and the other for rotational control, or conversely, the display mechanism being configured so that, at any given moment, only one first display (901) displays the instantaneous value of the first quantity, and only one second display (902) displays the instantaneous value of the second quantity, said display mechanism (100) comprising first optical means for indicating to the user which said first display (901) is displaying the instantaneous value of said first quantity, and comprising second optical means for indicating to the user which said second display (902) is displaying the instantaneous value of said second quantity, the display mechanism (100) being characterised in that, at each of said elementary display supports (10), the first or the second display (901; 902) comprises, for determining its instantaneous validity, an optical indicator (14) that is visible to the user only when the display (901; 902) carrying it displays the instantaneous value of the quantity displayed by that display (901; 902), and a lid (16) that is mobile between an activated position, in which said lid (16) allows said optical indicator (14) to be seen, and a deactivated position, in which said lid (16) conceals said optical indicator (14) from the user, and in that said display mechanism (100) comprises an actuator (2) that is configured to control the manoeuvring of said lid (16) to said activated position with respect to only one said elementary display support (10) at a time, and to control, at the same time, the movement to or the maintenance in the deactivated position of said lids (16) of all the other said elementary display supports (10).

2. Display mechanism (100) according to claim 1, characterised in that, at each of said elementary display supports (10), said first display (901) or said second display (902) comprises, for the validation or respectively invalidation of its instantaneous validity, a dynamic index (307) that is mobile relative to a static index (308) carried by a fixed part of said display mechanism (100), said dynamic index (307) and said static index (308) being configured to align or overlap when the display (901; 902) carrying it displays the instantaneous value of the quantity displayed by that display (901; 902).

3. Display mechanism (100) according to any of claims 1 or 2, comprising a plurality of distinct said elementary display supports (10) onto which the display of at least one said first quantity and / or of a said second quantity is broken down by dividing it into distinct ranges.

4. Display mechanism (100) according to claim 3, in which all of said elementary display elements (10) comprise display indicators of the same type, which are either said first displays (901) for displaying a first quantity, or said second displays (902) for displaying a second quantity, or both said first displays (901) and said second displays (902), in that all said display indicators are configured to be visible to the user of the timepiece (1000), and in that said display mechanism (100) comprises a control mechanism (300), which is configured to drive the wheels or rods driving the various display mobiles comprised in said display mechanism (100), and which comprises a first carrier (111), configured to be driven by a horological movement (200) and to alone drive all said first displays (901) when it comprises any, and / or a second carrier (112), configured to be driven by a horological movement (200) and to alone drive all said second display elements (902) when it comprises them.

5. Display mechanism (100) according to any of claims 1 to 4, comprising, in each said elementary display support (10), at least a said first display (901) and a said second display (902), which are coaxial with each other.

6. Display mechanism (100) according to any of claims 1 to 5, in which said actuator (2) comprises a cam that controls, directly or indirectly via at least one two-armed lever, the travel of at least one feeler spindle (19) to push a said lid (16) along a linear path, said feeler spindle (19) being returned to said cam (2) by resilient return means (190, 497).

7. Display mechanism (100) according to any of claims 1 to 6, characterised in that said display (901; 902), which comprises a said optical indicator (14) and a said lid (16), comprises a mobile support or a piston (8) relative to which said lid (16) is mobile between said activated position in which said lid (16) allows said optical indicator (14) to be seen, and said deactivated position in which said lid (16) conceals said optical indicator (14) from the user, said optical indicator (14) being carried by said mobile support or piston (8) or by said lid (16).

8. Display mechanism (100) according to claim 7, characterised in that said lid (16) is linearly mobile between a said activated position and a said deactivated position relative to said mobile support or piston (8), which is itself linearly mobile in the same direction between two travel end positions.

9. Display mechanism (100) according to any of claims 1 to 8, in which each said first display (901) is activated by a periodic movement, and each said second display (902) is activated by a periodic movement, and in that the step of one of the two is an integer multiple of the step of the other, or conversely.

10. Display mechanism (100) according to any of claims 1 to 9, characterised in that said display mechanism (100) comprises a single socalled elementary display support (10), and in that said first display (901) and said second display (902) are configured to display hours and minutes, or to display minutes and seconds.

11. Display mechanism (100) according to any of claims 1 to 9, comprising a plurality of similar said elementary display supports (10), each said first display (901) being configured to display a limited amplitude range that is an integer sub-multiple of the total display range of said first quantity, and each said second display (902) being configured to display a limited amplitude range that is an integer sub-multiple of the total display range of said second quantity.

12. Timepiece (1000) comprising a horological movement (200) configured to drive at least one display mechanism (100) according to any of claims 1 to 11, in which said display mechanism (100) comprises a control mechanism (300) that comprises at least one said first carrier (111), configured to be driven by a minute mobile in said horological movement (200), and / or a said second carrier (112) configured to be driven by an hour mobile in said horological movement (200), to directly or indirectly drive each said first display (901) and each said second display (902).