EP3408712A1 - Mécanisme de quantième - Google Patents
Mécanisme de quantièmeInfo
- Publication number
- EP3408712A1 EP3408712A1 EP17701749.8A EP17701749A EP3408712A1 EP 3408712 A1 EP3408712 A1 EP 3408712A1 EP 17701749 A EP17701749 A EP 17701749A EP 3408712 A1 EP3408712 A1 EP 3408712A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- date
- wheel
- actuator
- eccentric
- toothing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B11/00—Click devices; Stop clicks; Clutches
- G04B11/006—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
- G04B11/008—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) with friction members, e.g. click springs or jumper
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/241—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars the date is indicated by one or more hands
Definitions
- the present invention relates to a date mechanism and a timepiece provided with such a mechanism.
- Date mechanisms are a well-known complication in the field of watchmaking.
- a date mechanism is composed of a date driven wheel driven by the hour wheel of a watch movement.
- the date drive wheel carries a date finger or actuator which cooperates with a date wheel (star, crown, ...) for the indication of the date.
- the date mechanism is sometimes accompanied by a date correction mechanism.
- the finger or date actuator can also be arranged to be retractable in order to avoid the breakage of the mechanism during a date correction by a dedicated mechanism or a time setting back.
- the object of the present invention is to provide a date mechanism intended to equip a timepiece whose operation is safe and in particular to ensure the proper gearing of the finger or date actuator with the date wheel during the change of date and preferably to retract the finger or date actuator during a manual correction of the date or when setting the time back of the movement of the timepiece.
- the subject of the present invention is a date mechanism comprising a date driving wheel, a date actuator intended to cooperate with a date wheel to advance it by one step per day, the date wheel being subjected to the action a jumper for determining its angular positions, characterized in that the date mechanism further comprises a fixed axis and an eccentric carried by the drive wheel date; in that the date actuator is arranged to slide and pivot relative to said fixed axis; by the fact that the eccentric is arranged to drive the date actuator; and in that the eccentric, the fixed axis and the date actuator are arranged with respect to the date drive wheel so that:
- the date actuator advances the date wheel one step when the date driving wheel rotates in a first direction but does not rotate the date wheel when the date driving wheel pivots in a second direction opposite to the first;
- the date actuator can slide and pivot relative to the fixed axis and / or move against the action of an elastic force under the action of the date wheel without driving the date driving wheel, a rotation of the date wheel by an auxiliary mechanism when the date actuator is in the path of the toothing of the date wheel thus not causing the rotation of the date drive wheel.
- the present invention also relates to a timepiece provided with a date mechanism as above.
- FIG. 1 illustrates a first embodiment of the date mechanism according to the invention "at rest", the date actuator not being in contact with the date wheel.
- FIG. 2 illustrates the date mechanism according to the first embodiment before the change of date (at approximately 18.30).
- FIG. 3 illustrates the date mechanism according to the first embodiment just before the date change (at approximately 22:00).
- FIG. 4 illustrates the date mechanism according to the first embodiment at the time of the change of date (jump at midnight).
- FIGS. 6a, 6b and 6c illustrate the date mechanism according to the first embodiment during three successive manual corrections of the date:
- Figure 6a illustrates the mechanism at the time of the jump when the date is manually advanced by one day while the change of date has just occurred (manual correction of the date from the position of the mechanism shown in Figure 5). );
- FIG. 6b illustrates the date mechanism following the first correction illustrated in FIG. 6a
- FIG. 6c illustrates a second manual correction of a day ahead after the correction illustrated in FIG. 6b.
- FIG. 7 illustrates the date mechanism according to a second embodiment of the invention before the date change (at approximately 18:30).
- FIG. 8 illustrates the date mechanism according to the second embodiment just before the date change (at approximately 22:00).
- FIG. 9 illustrates the date mechanism according to the second embodiment at the time of the change of date (jump at midnight).
- Figure 10 illustrates the date mechanism according to the second embodiment just after the change of date.
- FIGS. 11a and 11b illustrate the date mechanism according to the second embodiment during a manual correction of the date:
- Figure 11a illustrates the mechanism at the time of the jump when the date is manually advanced by one day while the change of date has just taken place (manual correction of the date from the position of the mechanism illustrated in FIG. Figure 10);
- FIG. 11b illustrates the date mechanism following the first correction illustrated in FIG. 11a.
- the date mechanism according to the invention is intended to equip a movement of a timepiece.
- the date mechanism comprises a date driving wheel 1 in engagement with the movement of the timepiece (via the hour wheel for example) and a date actuator 2 arranged to cooperate with a date wheel 3.
- the date wheel 3 carries a date indicator (not shown) which is preferably a date hand.
- the date driving wheel 1 is preferably arranged to perform one revolution per day and carries an eccentric 4 having the shape of a stud integral with said driving wheel 1.
- the eccentric 4 passes through a first oblong hole 5 of the date actuator 2.
- Said date actuator 2 according to the first embodiment further comprises a second oblong hole 6 which is traversed by a fixed pin 7 integral with a fixed part of the movement of the timepiece (the timer bridge for example).
- the first and second oblong holes 5, 6 are essentially perpendicular to each other.
- the date actuator 2 is arranged to move both in translation and in rotation relative to the eccentric 4 of the date drive wheel 1 and to the fixed pin 7.
- the date actuator 2 comprises a date finger 8 intended to cooperate with a toothing 30 of the date wheel 3.
- the date wheel 3 is a date star whose teeth 30 comprise sixty-two teeth.
- the date actuator 2 is subjected to the action of an elastic force which tends to push it into a position in which it bears against the eccentric 4.
- the elastic force consists of a spring 9, a first end 9a is fixed on a fixed part of the movement of the workpiece timepiece (the timer bridge for example) while the second free end 9b bears against a protuberance 20 of the date actuator 2.
- the date mechanism according to the invention also comprises a date jumper 10 subjected to the action of a jumper spring 1 1 attached to one of these ends on a fixed part of the movement of the timepiece (the timer bridge for example).
- the date jumper 10 and its jumper spring January 1 are arranged to cooperate with the toothing 30 of the date wheel 3 and thus ensure the angular position of said date wheel 3.
- the date actuator 2 and its finger 8 are entirely clear of the toothing 30 of the date wheel 3 ( see Figure 1).
- the date actuator 2 is held in abutment against the eccentric 4 by its spring 9. More specifically, a first end of the first oblong hole 5 of the date actuator 2 is in abutment against the eccentric 4.
- the date driving wheel 1 pivots driven by the movement of the timepiece and in turn drives the date actuator 2 by the eccentric 4 against which it is held by the spring 9.
- Said date actuator 2 can pivoting and sliding relative to the fixed pin 7 thanks to its second oblong hole 6.
- FIG. 2 illustrates the displacement of said date actuator 2 which has come to be placed in the path of the toothing 30 of the date wheel 3 (situation at 18.30).
- FIG. 3 illustrates the date mechanism according to the first embodiment while the finger 8 of the date actuator 2 comes into contact with a tooth of the toothing 30 of the date wheel 3. From this position, the date driving wheel 1 continues to pivot and leads with it activates the date actuator 2, which in turn drives the date wheel 3. Under the action of the date actuator 2 driven by the date driving wheel 1, the jumper 10 rises and the date indicator 3 can rotate one step.
- the arrangement of the date actuator 2 according to the first embodiment with its two oblong holes 5, 6, the eccentric 4 and the fixed pin 7 makes it possible to adjust the penetration of the finger 8 of the actuator of FIG. date 2 in the toothing 30 to have maximum penetration of the finger 8 in the toothing 30 of the date wheel 3 during the change of date.
- the contact between the finger 8 of the date actuator 2 and the toothing 30 of the date wheel 3 is optimal and safe (Figure 4).
- the date actuator 2 drives the date wheel 3 until the jumper 10 falls back into the toothing 30 of the date wheel 3 under the action of its jumper spring 11 and repositions the date wheel 3 as shown in Figure 5. The date has changed. In this position, the finger 8 of the date actuator 2 is still in the path of the toothing 30 of the date wheel 3 and said date actuator 2 is still bearing against the eccentric 4.
- the date actuator 2 comprises a slot 6 'intended to receive the fixed pin 7.
- this slot could be an oblong hole as in the first embodiment.
- the eccentric 4 secured to the date drive wheel 1 passes through a bore of the date actuator 2.
- the date actuator 2 is arranged to move both in translation and in rotation with respect to the fixed pin 7, but only in rotation with respect to the eccentric 4.
- the date actuator 2 comprises a date finger 8 ', which is elastic and intended to cooperate with the toothing 30' of the date wheel 3.
- the toothing 30 'of the date wheel 3 is a serrated toothing and includes sixty-two teeth.
- the date driving wheel 1 rotates driven by the movement of the timepiece and in turn drives the date actuator 2 through the eccentric 4.
- Said date actuator 2 can pivot and slide relative to the fixed pin 7 thanks to its notch 6 '.
- Figure 7 illustrates the movement of said date actuator 2 which has come to be placed in the path of the toothing 30 'of the date wheel 3 (situation at 18:30).
- FIG. 8 illustrates the date mechanism according to the second embodiment while the finger 8 'of the date actuator 2 comes into contact with a tooth of the toothing 30' of the date wheel 3. From this position, the date drive wheel 1 continues to rotate and carries with it the date actuator 2.
- the elastic finger 8 'and its active end are in particular shaped to cooperate with the toothing 30' and in this position, drive the wheel of calendar 3.
- the elastic finger 8 'then works in buckling: subjected to a normal compression force by the toothing 30', it will flex and deform in a direction perpendicular to the compression axis.
- the elastic finger 8 ' is arranged so that during this buckling work, it can maintain its position in abutment against the toothing 30' and rotate the date wheel 3 one step against the action of the jumper 10 which rises then ( Figure 9).
- the date drive wheel 1 continues to drive the date actuator 2 which pivots driven by the eccentric 4 and slides relative to the fixed pin 7 to find a completely clear position of the toothing 30 'of the date wheel 3.
- the date actuator 2 of the date mechanism according to the invention is arranged to be retractable in case of manual correction of the date or in case of time setting back the movement of the timepiece . That is to say, it is arranged not to drive the date drive wheel 1 when the date wheel 3 is rotated by an auxiliary mechanism such as a date correction mechanism and not to drive the date wheel 3 when the date driving wheel 1 is rotated in a direction corresponding to a time setting back.
- FIGS. 6a to 6c illustrate this retraction for the mechanism of date according to the first embodiment, while Figures 1 1a and 1 1b relate to the second embodiment.
- the date mechanism according to the invention can therefore be provided with a date correction mechanism enabling the user to manually correct the date by advancing it by one day (at the end of the month, for example).
- FIG. 6a illustrates this particular case for the first embodiment in which the user corrects the date by advancing it by one day immediately after the date change.
- the user actuates the correction mechanism (well known and not illustrated) which advances the date wheel 3 by one step.
- the jumper 10 is raised to allow the rotation of the date wheel 3 and it drives the date actuator 2 by its finger 8 which is still in the path of the toothing 30 of the date wheel 3 (see Figure 5 ).
- the date actuator 2 pivots relative to the fixed pin 7 against the action of the spring 9.
- the date actuator 2 also moves by relative to the eccentric 4 in a position in which it is no longer supported against said eccentric 4.
- the finger 8 of the date actuator 2 is still in the path of the toothing 30 of the date wheel 3.
- the date wheel 3 will again drive the date actuator 2.
- the first oblong hole 5 is arranged to allow the date actuator 2 to move further relative to the eccentric 4 to avoid breakage of the mechanism.
- the date wheel 3 is pivoted by the correction mechanism, it drives the date actuator 2 which pivots around the fixed pin 7 and slides relative to the eccentric 4 The date actuator 2 is again retracted without driving the date driving wheel 1.
- the date mechanism according to the first embodiment is now in the position illustrated in Figure 6c.
- the jumper 10 positions the wheel 3.
- the finger 8 of the date actuator 2 is still bearing against the toothing 30 of the date wheel 3 constrained by the spring 9.
- this position is stable since the force of the jumper spring 1 1 is greater than the force of the spring 9 exerted on the date actuator 2.
- the date mechanism according to the first embodiment can continue normal operation from this position.
- the date actuator 2 In the case of a new manual correction of the date, the date actuator 2 according to the first embodiment still has the possibility of sliding relative to the eccentric 4 carried by the date driving wheel 1 before the second end of the first oblong hole 5 does not abut against said eccentric 4. Thus, from the position illustrated in Figure 6c, a new correction of the date forward will cause a new retraction of the date actuator 2. Following this correction the finger 8 of the date actuator 2 comes out of the toothing 30 of the date wheel 3. Thus released, the date actuator 2 is returned by the spring 9 in its position shown in Figure 1 in abutment against the 4. In this position, the date actuator 2 is again driven by the date drive wheel 1 in a normal manner.
- the date actuator 2 according to the first embodiment is also retractable in case of setting the time of movement of the timepiece back to avoid correction of the date back.
- the finger 8 of the date actuator 2 can come into contact with the toothing 30 of the date wheel 3 without driving it, even when the date driving wheel 1 continues its rotation in the direction of setting at the time back.
- the date actuator 2 will remain in abutment against the toothing 30 of the date wheel 3 while the eccentric 4 will be able to move in the first oblong hole 5 of the date actuator 2 .
- the elastic force exerted by the jumper spring 1 1 on the jumper 10 must be greater than the elastic force of the spring 9 exerted on the actuator of date 2.
- the user actuates the correction mechanism which moves the date wheel 3 one step.
- the jumper 10 is raised to allow the rotation of the date wheel 3 and it drives the finger 8 'which is still in the path of the toothing 30' of the date wheel 3 (see Figure 10).
- the finger 8 ' being elastic, it will deform under the action of the date wheel 3 without driving the drive wheel of date 1. This time, the elastic finger 8 'deforms in flexion.
- the toothing 30 'sawtooth further facilitates this retraction.
- the date correction is therefore not reflected on the rest of the movement of the timepiece.
- the jumper 10 falls back into the toothing 30 'of the date wheel 3 to reposition it.
- the elastic finger 8 'of the date actuator 2 returns in the path of the toothing 30' bearing against it.
- This position of the date mechanism according to the second embodiment after the correction is illustrated in Figure 11b. This position is stable because the force exerted by the jumper spring 1 1 on the jumper 10 is greater than the bending force exerted by the elastic finger 8 'on the toothing 30' of the date wheel 3.
- the date driving wheel 1 continues its rotation driving via the eccentric 4 the date actuator 2 and its finger. elastic 8 '.
- the finger 8 'of the date actuator 2 is still in the path of the toothing 30' of the date wheel 3.
- the date wheel 3 will again drive the finger 8 'which is shaped to deform again under the action of the date wheel 3 without driving the date actuator 2 and the date driving wheel 1.
- the date wheel 3 is pivoted by the correction mechanism, the elastic finger 8 'is again retracted without driving the date drive wheel 1.
- the jumper 10 positions the date wheel 3.
- the finger 8 'of the date actuator 2 returns in the path of the toothing 30' of the date wheel 3 under its elastic action. As before, this position is stable since the force of the jumper spring 1 1 is greater than the bending force exerted by the elastic finger 8 'on the toothing 30'.
- the date mechanism according to the second embodiment can continue its normal operation from this position.
- the elastic finger 8 'of the date actuator 2 is also retractable in case of setting the time of movement of the timepiece back to avoid correction of the date back.
- the finger 8 'of the date actuator 2 can come into contact with the toothing 30' of the date wheel 3 without driving it, even when the date driving wheel 1 continues its rotation in the direction of setting time back.
- the elastic finger 8 ' will also deform in bending when the date actuator 2 is driven by the date drive wheel 1 in the direction of time setting back.
- the elastic finger 8 ' is arranged so that its force is greater than that of the jumper spring January 1 when working in compression or buckling while its bending force is weaker than the force of said jumper spring 1 1.
- a date mechanism is made whose date actuator is retractable in the same way as a pawl.
- the first embodiment also makes it possible to ensure particularly safe operation since the eccentric carried by the date driving wheel and the shape of the date actuator make it possible to adjust the penetration of the finger of the date actuator into the tooth of the date wheel and thus to ensure a safe and optimal gear between the two mobiles during the change of date.
- the second embodiment has the advantage of simplicity and avoid adjustment of an additional spring.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16152520 | 2016-01-25 | ||
| PCT/IB2017/050238 WO2017130075A1 (fr) | 2016-01-25 | 2017-01-17 | Mécanisme de quantième |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3408712A1 true EP3408712A1 (fr) | 2018-12-05 |
| EP3408712B1 EP3408712B1 (fr) | 2020-03-04 |
Family
ID=55229603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17701749.8A Active EP3408712B1 (fr) | 2016-01-25 | 2017-01-17 | Mécanisme de quantième |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3408712B1 (fr) |
| WO (1) | WO2017130075A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019120272B3 (de) | 2019-07-26 | 2020-06-18 | Lange Uhren Gmbh | Uhr mit einer ersten Anzeige und einer zweiten Anzeige |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH346170A (fr) * | 1958-04-25 | 1960-04-30 | Roamer Watch Co Sa | Pièce d'horlogerie à quantième |
| DE1242512B (de) * | 1964-08-25 | 1967-06-15 | United States Time Corp | Anzeigevorrichtung an einer Uhr zum Anzeigen einer Vielzahl von Kalenderinformationen |
| EP1868048B1 (fr) * | 2005-03-30 | 2011-09-28 | Citizen Holdings Co., Ltd. | Dispositif d'affichage et dispositif de calendrier d'une pièce d'horlogerie |
| CH708338B1 (fr) * | 2013-07-04 | 2018-06-15 | Mft La Joux Perret Sa | Mécanisme correcteur pas-à-pas. |
-
2017
- 2017-01-17 EP EP17701749.8A patent/EP3408712B1/fr active Active
- 2017-01-17 WO PCT/IB2017/050238 patent/WO2017130075A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017130075A1 (fr) | 2017-08-03 |
| EP3408712B1 (fr) | 2020-03-04 |
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