CH718381B1 - Large date display device. - Google Patents

Abstract

The invention relates to a large date display device (1) comprising: - a unit mobile (3) pivotally mounted around an axis of the units (5) and arranged to be driven by means of a device training (13) at the rate of one step per day, said mobile of the units (3) comprising at least one sequence of indications of the units (7) of the date and a star of the units (11) cooperating with a jumper of the units (15); – a tens mobile (21) pivotally mounted around a tens axis (23) arranged collaterally with respect to the units axis (5), the tens mobile (21) comprising at least one sequence of indications tens (25) of the date as well as a tens star (29) cooperating with a tens necklace (31). The units indication sequence (7) comprises at least once a sequence of 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, the tens indication sequence (25) comprising at least once a sequence of 0, 1, 1, 2, 2, 3 or an empty space followed by 1, 1, 2, 2, 3. The units mobile (3) is arranged to drive the tens mobile (21) at the rate of one step during a transition from an indication of “9” on the mobile of the units (3) as well as at the rate of one additional step during a transition from the first indication of “ 1“ on the units mobile (3), the tens mobile (21) being arranged to drive the units mobile (3) under the effect of the tens jumper (31) at the rate of an additional step to carry out the transition from the second indication „1“ to the indication „2“ on the mobile of the units while the displayed indication makes the transition between „11“ and „12“, and also while the displayed indication makes the transition between „21“ and „22“.

Description

Technical area

[0001] The present invention relates to the field of watchmaking. It concerns, more particularly, a large date display device, in which the indications of the units of the dates are carried by a units mobile, while those of the tens are carried by a tens mobile, the two mobiles being mounted on distinct collateral axes.

State of the art

[0002] Documents CH698667, CH316461, CH310559, CH715152 reveal various variants of large date display devices of the type mentioned in the preamble. Since the sequence of dates goes from 1 to 31, there is always a problem with the drive of the discs when transitioning from a display of 31 to a display of 1 or 01, if applicable. The solutions proposed so far include various means to carry out this transition, such as for example programming wheels, several force inputs, the use of a date crown as force input or others. These various means involve a relatively high complexity of construction or relatively difficult development.

[0003] The aim of the invention is therefore to propose a large date display device for a timepiece, in which the aforementioned defects are at least partially overcome.

Disclosure of the invention

[0004] More precisely, the invention relates to a display device as defined by claim 1. This display device comprises:

[0005] - a mobile of the units mounted to pivot around an axis of the units and comprising at least one sequence of indications of the units of the date intended to be visible to the user, for example through a window in a indication position. The unit mobile also includes a unit star cooperating with a unit jumper, in order to position the unit mobile in a known manner. In order to ensure the training of said mobile, the latter is arranged to cooperate with a training device arranged to train it at the rate of one step per day, in particular under the effect of a basic movement, the device drive which can be of any known type (instantaneous, semi-instantaneous, rigid finger driven or similar);

[0006] - a tens mobile mounted to pivot around a tens axis arranged collaterally with respect to said units axis, said tens mobile comprising at least one sequence of tens indications of the date as well as a tens star cooperating with a tens saltire.

[0007] According to the invention, said sequence of unit indications comprises at least once a sequence of indications 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, (c' that is to say one, two or even three times said sequence), said sequence of tens indications comprising at least once a sequence of indications 0, 1, 1, 2, 2, 3 or alternatively an empty space followed of 1, 1, 2, 2, 3 (that is to say one, two or even three times said sequence). Said units mobile is arranged to drive said tens mobile at the rate of one step during a transition from an indication of “9” on said units mobile as well as at the rate of an additional step during a transition since the first indication of “1” on said units mobile, the tens mobile being arranged to drive the units mobile under the effect of the tens jumper at the rate of an additional step to carry out the passage of the second indication “ 1“ to the indication „2“ on the unit wheel when the displayed indication makes the transition between „11“ and „12“, as well as when the displayed indication makes the transition between „21“ and „22“. During such transitions, the second indication of “1” on the unit mobile is thus skipped.

[0008] By these means, a simple, compact and reliable arrangement is obtained for displaying the cycle of dates from 1 to 31. This arrangement has only one conventional power take-off on the basic movement, is free from programming wheel(s), is positioned by conventional jumpers and is therefore unlikely to be disrupted in the event of an impact. Even in the event of a disturbance, the synchronization between the mobiles will return to order simply by cycling through the cycle via any correction device which acts on the mobile of the units or simply by means of the training device.

[0009] Advantageously, the mobile of the units comprises:

[0010] - a first driving structure arranged to drive said tens mobile at a rate of one step during the transition from an indication of “9” to “0” of said units mobile; And

[0011] - a second driving structure arranged to drive said tens mobile by an additional step during the transition from a first indication of “1” to the second indication of “1” of said units mobile.

[0012] Furthermore, said tens mobile advantageously comprises:

[0013] - a third driving structure arranged to drive said mobile unit by an additional step during the transition from an indication of “11” to “12”; And

[0014] - a fourth driving structure arranged to drive said mobile unit by an additional step during the transition from an indication of “21” to “22”.

[0015] Although said driving structures can take a large number of different shapes, they advantageously each include a finger or a tooth.

[0016] Advantageously, said mobile of tens comprises a plurality of first driven structures arranged to cooperate with said first and second driving structures, and in which said mobile of units comprises a second driven structure arranged to cooperate with each of said third and fourth driving structures . The number of first led structures corresponds to the number of indications on the tens mobile (a possible space instead of a number “0” counting as an indication), while the number of other leading and led structures corresponds to the number of indication sequences provided on the corresponding mobile, their positions being chosen to carry out the above-described operating sequence.

[0017] Although said driven structures can take a large number of different shapes, the first driven structures advantageously each include a notch, and the second driven structure advantageously includes a finger or a tooth.

Advantageously, said unit mobile comprises a unit disk carrying:

[0019] - said sequence of indications of the units of the date;

[0020] - said first and second driving structures; And

[0021] - said second led structure.

Advantageously, said tens mobile comprises a tens disk carrying:

[0023] - said sequence of indications of the tens of the date;

[0024] - said first structures carried out; And

[0025] - said third driving structure.

Advantageously, said drive device is arranged to rotate said unit star at a rate of one pitch of its teeth per day, which is simple to implement. This training can in particular be by means of a flexible finger which comprises said training device.

[0027] Advantageously, said tens mobile is arranged to be driven exclusively via said units mobile and by its own jumper, that is to say that there is no direct kinematic connection between the mobile tens and the basic movement.

Advantageously, said units jumper and said tens jumper are made of material with one another.

The display device, as defined above, can be integrated into a watch movement, which can equip a timepiece.

Brief description of the drawings

[0030] Other details of the invention will appear more clearly on reading the description which follows, made with reference to the appended drawings in which: – Figure 1 is a transparent plan view of a display device according to the invention, just before midnight on the 1st of the month; – Figure 2 is a view similar to that of Figure 1, illustrating the situation just before midnight on the 9th of the month; – Figure 3 is a view similar to that of Figure 1, illustrating the situation during the transition between an indication of “09” to “10”; – Figure 4 is a view similar to that of Figure 1, illustrating the situation just before midnight on the 10th of the month; – Figure 5 is a view similar to that of Figure 1, illustrating the situation just before midnight on the 11th of the month; – Figure 6 is a view similar to that of Figure 1, illustrating the situation during a first phase of the transition between an indication of “11” to “12”, – Figure 7 is a view similar to that of Figure 1, illustrating the situation during a second phase of the transition between an indication of “11” to “12”; – Figure 8 is a view similar to that of Figure 1, illustrating the situation towards the end of the transition between an indication of “11” to “12”; – Figure 9 is a view similar to that of Figure 1, illustrating the situation just before midnight on the 12th of the month; – Figure 10 is a view similar to that of Figure 1, illustrating the situation just before midnight on the 29th of the month; – Figure 11 is a view similar to that of Figure 1, illustrating the situation during the transition between an indication of “29” to “30”; – Figure 12 is a view similar to that of Figure 1, illustrating the situation just before midnight on the 30th of the month; – Figure 13 is a view similar to that of Figure 1, illustrating the situation just before midnight on the 31st of the month; and – Figure 14 is a view similar to that of Figure 1, illustrating the situation during the transition between an indication of “31” to “01”.

Modes of carrying out the invention

[0031] Figures 1 to 14 illustrate a non-limiting embodiment of a large date display device 1 according to the invention.

This display device 1 comprises a mobile of units 3 mounted to pivot around an axis of units 5 and carrying indications 7 of the units of the date regularly distributed angularly and arranged in such a way as to be visible to a user at less when they are in an indication position, the latter being defined, for example, by an aperture provided in a dial, a shape marked on a transparent element or simply by the respective positions of the indications.

The sequence of indications of the units 7 includes the sequence of numbers 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, for reasons which will become clear later. In variants not illustrated, the mobile of the units 3 can include two or even three times this sequence, the size of the indications 7 and the diameter of the mobile of the units 3 being adapted accordingly.

[0034] In the illustrated embodiment, the mobile of the units 3 consists of a disc of the units 9 carrying the indications of the units 7, said disc 9 being integral in rotation with a star of the units 11. The latter carries as many of teeth than the number of indications of the units 7, and is arranged to cooperate on the one hand with a drive device 13 arranged to drive said mobile of the units 3 at the rate of one pitch of the teeth of the star of the units 11 per day and on the other hand with a jumper of units 15. The latter is arranged to position said disc of units 3 when it is not being driven as well as to cooperate in its training in a conventional manner .

[0035] The disk of units 9 may be transparent, translucent or opaque and may or may not be made of material with the star of units 11. Preferably, the disk of units 9 is made of sapphire, but materials such as metal are of course possible.

The drive device 13 can be of any known type (smooth, semi-instantaneous, instantaneous) and is adapted to drive the star of the units 11 at a rate of one pitch of its teeth around midnight. For this purpose, it comprises a 24h wheel 17 driven by a basic movement (not illustrated) and carries a flexible finger 19 which cooperates with the teeth of the star of the units 11 in a known manner.

A tens mobile 21 is pivoted around a tens axis 23, arranged collaterally and typically parallel to the units axis 5, but it is possible that these axes 5, 23 can form an angle between them. Similar to the unit mobile 3, the tens mobile 21 comprises a series of tens indications 25 regularly distributed angularly and arranged in such a way as to be visible to the user at least when they are in a position of indication, adjacent to an indication of the units 7 so as to compose an indication of the date.

The sequence of tens indications 21 is composed of the digits 0 (or an empty space), 1, 1, 2, 2, 3, which can be repeated several times, for example two or three times, if necessary .

[0039] These indications 25 are carried by a tens disk 27 which is integral in rotation with a tens star 29, which has as many teeth as tens indications 25, and which is positioned by a tens jumper 31 The latter came from the material with the jumper of the units 15, and the elasticity of each jumper 15, 27 is obtained thanks to its shape. However, it is also possible to provide two jumpers 15, 17 which are not in one piece and/or which include elastic return elements which are not integrated therein.

[0040] In the illustrated embodiment, the units disk 9 and the tens disk 27 are coplanar and are located adjacent to each other. However, other arrangements are possible, in which the two disks 9, 27 overlap, as known for example in documents CH316461, EP1070996 and similar, the arrangement and arrangement of the units mobile 3 as well as the tens mobile 21 being adapted accordingly. In the case of an arrangement of the type described by document EP1070996, the mobile of the units 3 will therefore be to the left of that of the tens 27, considered in the usual sense. Transparent or cut-out areas in the disc(s) can of course be taken from these documents.

Unlike most systems of the prior art, the tens mobile 21 has no direct connection with the basic movement and is rotated by means of the units mobile 3, as will clearly appear from the following. Furthermore, it is arranged to be able to rotate the units disk 3 under the effect of the tens jumper 31 during certain transitions from one indication to the next.

[0042] In order to ensure the training of the tens mobile 21, the latter comprises a plurality of first driven structures 33, regularly distributed angularly and whose number corresponds to the number of tens indications 25. In the case of the presence a free space instead of an indication of „0“, the latter of course counts as an indication. These driven structures 33 are arranged to cooperate with a first driving structure 35 as well as a second driving structure 37 which comprises the mobile of the units 3, as will be described above in the context of the operating cycle. In the case where the mobile of the units 3 comprises several sequences of indications of the units 7, each sequence is associated with a first and a second driving structure 35, 37.

The tens mobile 21 also includes a third driving structure 39 as well as a fourth driving structure 41 each arranged to cooperate with a second driven structure 43 provided on the units mobile 3, as will appear later.

[0044] The exact shapes of the various driving and driven structures 33, 35, 37, 39, 41, 43 are not important, and may vary according to the needs and wishes of the manufacturer to the extent that the functionality described is reproduced. In the illustrated embodiment, the driving and driven structures 33, 35, 37, 39, 41, 43 are provided around the disks of the units 3 and tens 21, but it is also possible to provide them on dedicated disks or similar, which are part of the mobiles 3 and 21 and which are therefore integral in rotation with the respective star 11, 29. This last possibility is particularly particularly applicable in the case of an overlap of the disks 9, 27, as described in documents CH316461, EP1070996 and similar, mentioned above. Indeed, such constructions involve the use of dedicated discs carrying said structures 33, 35, 37, 39, 41, 43, located on the movement side of the respective discs bearing the corresponding indications 7, 25

[0045] In the illustrated case: – the first structures carried out are notches located angularly just downstream of each tens indication 25 (considered according to the direction of rotation of the tens mobile 21, which is the counterclockwise direction) on the mobile of the tens tens 21; – the first driving structure 35 is a finger located angularly between the indications of “9” and “0” on the unit mobile; – the second driving structure 37 is a finger located angularly between the two indications of “1” on the mobile of the units 3; – the third driving structure 39 is a finger located angularly between the two indications of “1” on the tens mobile 21, located angularly just upstream of the second indication of “1”; – the fourth driving structure 41 is a finger located between the two indications of “2” on the tens mobile 21, located angularly just upstream of the second indication of “2”; and – the second driven structure 43 is a finger located angularly adjacent to the second indication of “1” on the mobile of the units 3.

[0046] Of course, structures equivalent to fingers (such as teeth) can also be used for the driving structures 35, 37, 39, 41, and for the second driven structure 43, while structures other than Notches can be used for the first led structures, such as for example teeth, fingers or the like.

[0047] The operating cycle of the display device 1 according to the invention will now be described, starting with the indication of “01” in Figure 1. In Figures 2 to 14, only the reference signs of the elements mentioned in connection with a particular figure have been made so as not to overload them.

[0048] Starting from the situation illustrated in Figure 1, the mobile of the units 3 will be advanced at the rate of one step of the teeth of the star of the units 11 per day, under the effect of the drive device 13. The tens mobile 21 remains stationary until the transition between an indication of “09” to “10”, no interaction between the driving and driven structures 33, 35, 37, 39, 41, 43 taking place.

[0049] Figure 2 illustrates the situation just before midnight when an indication of “09” is indicated. The first driving structure 35 is ready to cooperate with the first driving structure 33 downstream of the number “0” on the tens mobile 21.

[0050] Figure 3 illustrates the situation some time after that of Figure 2, the flexible finger 19 being rotating the mobile of the units 3 in the clockwise direction. At the same time, the first driving structure 35 cooperates with the corresponding first driven structure 33, in order to drive the tens mobile 21 in rotation counterclockwise, in order to make the indication “10” appear, consisting of the first indication of “1” of the tens mobile 21 as well as the indication of “0” of the units mobile 3. The jumpers 15, 31 fulfill their conventional operation, that is to say they serve to complete the rotation of the corresponding mobile 3, 21, and then position them in their next stable angular position.

[0051] The transition between the indication “10” and “11” takes place conventionally, no interaction between the units mobile 3 and the tens mobile 21 taking place. As illustrated in Figure 5, the indication of “11” consists of the first indication of “1” of the tens mobile 21 as well as the first indication of “1” of the units mobile 3.

[0052] Figure 5 illustrates the situation just before the transition from an indication from “11” to “12”. The second driving structure 37 is ready to cooperate with the first driven structure 33 which is located opposite it.

[0053] Figure 6 illustrates the situation during the next drive of the disk of the units 3 via the flexible finger 19. During this drive, the second driving structure 37 cooperates with the first driven structure 33 mentioned above in order to drive in rotation the tens mobile 21. As follows from this figure, the third driving structure 39 approaches the second driven structure 43.

[0054] When the top of a tooth of the tens star 29 has exceeded the top of the tens jumper 31, the latter propels the tens mobile 21 even further in the counterclockwise direction, which brings the third driving structure 39 in engagement with the second driven structure 43, as clearly illustrated in Figures 7 and 8. In doing so, the disk of the units 3 is driven by an additional step in the clockwise direction, under the effect of the tens jumper 31, before being repositioned under the effect of the units' jump. The second indication “1” carried by the unit disk 3 is thus skipped. Of course, the respective stiffnesses of the two jumpers 15, 31 are adapted in such a way as to allow this training, taking into account the shape of the teeth of the stars 11, 29, the diameters of the stars 11, 29, the geometry of the cooperation between structures 39 and 43 as well as dynamic effects. For example, the stiffness of the tens jumper 31 can be greater than that of the units jumper 15, but this is not obligatory if the geometry of the arrangement takes it into account.

[0055] At the end of this transition, when each mobile 3, 21 has reached its next stable angular position under the effect of the corresponding jumper 15, 31, the indication “12” is obtained, and is made up of the second indication “1” on the tens disk as well as the indication of “2” on the units disk, as shown in Figure 9.

[0056] The sequence of indications between “12” and “29” follows in the same way, mutatis mutandis, the fourth driving structure 41 cooperating with the second driven structure 43 during the transition from “21” to “22” of the same way as the third driving structure 39 during the transition from “11” to “12” as described above. These transitions therefore do not need to be described in detail.

[0057] Figures 10 to 13 illustrate the transition from an indication from „29“ to „30“ and then to „31“, which follows in a similar way to the transition from „09“ to „10“ and then to „ 11“ as described in detail above, and therefore requires no repetition here.

[0058] On the other hand, and as illustrated in Figure 14, when driving the mobile of units 3 during the transition from an indication of “31” to “01”, the flexible finger 19 drives the mobile of units 3 in rotation at the rate of one step, which causes the units indication to pass from the first indication “1” to the second indication “1”, and at the same time the second driving structure 37 drives the tens mobile 21 at a rate of 'a step by its cooperation with the first driven structure 33 which is located opposite the second leading structure 37. The tens mobile therefore indicates "0".

Consequently, and starting from an indication of “01”, the sequence of indications is (the second indication of a pair of identical indications being in bold and underlined): 01, 02, 03, 04, 05 , 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 , 31.

[0060] To ensure the manual correction of the device 1, any rapid correction device can be provided, the latter preferably acting on the star of the units 11 in a known manner in order to rotate the latter in discrete steps in the direction of the advancement of its indications 7 (that is to say clockwise in the illustrated embodiment).

In the case where one or the other of the disks 3, 21 comprises a plurality of series of indications 7, 25, each sequence 7 on the mobile of the units 3 is associated with its own first and second driving structures ( 35, 37) as well as its own second driven structure 42, while each sequence 25, on the mobile of the units 21, is associated with its own third and fourth driving structures. In other words, the structures 35, 37, 39 and 41 are multiplied to the extent that the mobile in question 3, 21 comprises several sequences of indications 7, 25. Of course, the positional rotation between the structures 35, 37 , 39 and 41 and the corresponding indications 7, 25 remain substantially the same for each sequence.

[0062] Although the invention has been previously described in connection with specific embodiments, other additional variants are also possible without departing from the scope of the invention as defined by the claims.

Claims (11)

1. Display device (1) with large date comprising: – a mobile of the units (3) mounted to pivot around an axis of the units (5) and arranged to be driven by means of a drive device (13) at the rate of one step per day, said mobile units (3) comprising at least one sequence of unit indications (7) of the date and a unit star (11) cooperating with a unit jumper (15); – a tens mobile (21) pivotally mounted around a tens axis (23) arranged collaterally with respect to said units axis (5), said tens mobile (21) comprising at least one sequence of tens indications (25) of the date as well as a tens star (29) cooperating with a tens necklace (31); characterized in that said sequence of unit indications (7) comprises at least once a sequence of 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, said sequence of unit indications tens (25) comprising at least once a sequence of 0, 1, 1, 2, 2, 3 or an empty space followed by 1, 1, 2, 2, 3; and in that said units mobile (3) is arranged to drive said tens mobile (21) at the rate of one step during a transition from an indication of “9” on said units mobile (3) as well as 'at the rate of an additional step during a transition from the first indication of "1" on said units mobile (3), the tens mobile (21) being arranged to drive said units mobile (3) under the effect of the tens jumper (31) at the rate of an additional step to make the transition from the second indication „1“ to the indication „2“ on the units mobile while the displayed indication makes the transition between „ 11“ and „12“, and also while the displayed indication transitions between „21“ and „22“. 2. Display device (1) according to the preceding claim, in which the mobile unit (21) comprises: – a first driving structure (35) arranged to drive said tens mobile (21) one step during the transition from an indication of “9” to “0” on said units mobile; And – a second driving structure (37) arranged to drive said tens mobile (21) by an additional step during the transition from a first indication of “1” to the second indication of “1” on said mobile of units (3); and in which said tens mobile (21) comprises: – a third driving structure (39) arranged to drive said mobile unit (3) by an additional step during the transition from an indication of “11” to “12”; And – a fourth driving structure (41) arranged to drive said mobile unit (3) by an additional step during the transition from an indication of “21” to “22”. 3. Display device (1) according to the preceding claim, wherein each driving structure (35, 37, 39, 41) comprises a finger or a tooth. 4. Display device (1) according to one of claims 2 and 3, wherein said mobile tens (21) comprises a plurality of first driven structures (33) arranged to cooperate with said first and second driving structures (35 , 37), and in which said mobile unit (3) comprises a second driven structure (43) arranged to cooperate with each of said third and fourth driving structures (39, 41). 5. Display device (1) according to the preceding claim, wherein said first driven structures (33) each comprise a notch, and said second driven structure (43) comprises a finger or a tooth. 6. Display device (1) according to one of claims 4 and 5, wherein said unit mobile (3) comprises a unit disk (9) carrying: – said sequence of indications of the units (7) of the date; – said first and second driving structures (35, 37); And – said second driven structure (43); and in which said tens mobile (21) comprises a tens disc (27) carrying: – said sequence of indications of the tens (25) of the date; – said first structures carried out (33); And – said third driving structure (39). 7. Display device (1) according to one of the preceding claims, wherein said drive device (13) is arranged to rotate said star of the units (11) at a rate of one pitch of its teeth per day, for example by means of a flexible finger (19) which comprises said training device (13). 8. Display device (1) according to one of the preceding claims, wherein said tens mobile (21) is arranged to be driven exclusively via said units mobile as well as said tens jumper (31). 9. Display device (1) according to one of the preceding claims, wherein said units jumper (15) and said tens jumper (31) are integral with one another. 10. Clock movement comprising a display device (1) according to one of claims 1 to 9. 11. Timepiece comprising a movement according to claim 10.