EP3882716B1 - Uhr, die eine gezahnte scheibe umfasst, die durch eine raste indexiert ist - Google Patents

Uhr, die eine gezahnte scheibe umfasst, die durch eine raste indexiert ist Download PDF

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Publication number
EP3882716B1
EP3882716B1 EP20163938.2A EP20163938A EP3882716B1 EP 3882716 B1 EP3882716 B1 EP 3882716B1 EP 20163938 A EP20163938 A EP 20163938A EP 3882716 B1 EP3882716 B1 EP 3882716B1
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EP
European Patent Office
Prior art keywords
spring
jumper
setting stem
timepiece
hand
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.)
Active
Application number
EP20163938.2A
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English (en)
French (fr)
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EP3882716A1 (de
Inventor
Samuel Tanner
José FERNANDEZ SAMPEDRO
Laurent LHOTE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Priority to EP20163938.2A priority Critical patent/EP3882716B1/de
Publication of EP3882716A1 publication Critical patent/EP3882716A1/de
Application granted granted Critical
Publication of EP3882716B1 publication Critical patent/EP3882716B1/de
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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
    • 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
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/25—Devices for setting the date indicators manually
    • 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
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/026—Mechanical devices for setting the time indicating means by making use of the winding means for several clockworks or pairs of hands and/or supplementary functions
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/06—Mechanical devices for setting the time indicating means by making use of the winding means with rocking bar

Definitions

  • the present invention relates to a timepiece comprising a toothed mobile, an indexing device comprising a jumper and elastic means arranged to return the head of the jumper against the toothing of the toothed mobile so as to index the latter, and a time-setting which is movable in translation between a neutral position and at least a first pulled-out position in which it is possible to actuate the toothed wheel set in rotation by rotating the time-setting stem.
  • the mobile indexed by a jumper may be a jumping display member, in particular a member for displaying the date or the day of the week.
  • a time-setting stem does not impose any constraints as to the manner in which it is actuated. It transmits all the forces to which it is subjected, regardless of their duration and intensity. This feature is not entirely devoid of disadvantages. Indeed, a user wishing to manually adjust the position of the indexed mobile, using the time-setting stem, has no marker allowing him to measure his effort. It is therefore very difficult for him, for example, to drive the indexed mobile through a determined number of steps.
  • the document FR 2 081 855 A7 discloses a timepiece in which a correction system acts on a jumper spring by changing the tension of said spring.
  • An object of the present invention is to remedy the drawbacks of the prior art which have just been explained.
  • the present invention achieves this and other objects by providing a timepiece which is in accordance with appended claim 1.
  • the timepiece comprises a braking system comprising a spring integral with the jumper and a bearing surface fixed to the spring, and also comprising a switch arm arranged to be controlled by the time, the braking system being arranged to be in an inactive state, in which the switch arm does not interact with the bearing surface, when the time-setting stem is in the neutral position, and to be in an active state, in which the commutator arm deforms the spring by exerting a force on the bearing surface, when the time-setting stem is in the said first pulled-out position.
  • the figure 1 , 2A and 3 illustrate the indexing device, the time-setting stem and the braking system of a timepiece which conforms to a first exemplary embodiment.
  • the illustrated indexing device is formed of a jumper 11 pivotally mounted on a shaft 13 and elastic means consisting of a first leaf spring 15 arranged to bias the jumper 11 counterclockwise.
  • the time-setting stem (referenced 17) can be actuated manually in translation between a neutral position ( Figure 1 ), a first drawn position ( Figure 2A ) and a second drawn position ( Figure 3 ), and it is also operable in rotation.
  • the figures also show a second leaf spring 19 which is integral with jumper 11 and which, in accordance with what will be explained later, forms part of the braking system. It can be seen that the spring 19 has a part folded several times, so as to constitute a bearing surface 21 forming a projection and delimited on either side by two shoulders.
  • the figures also show a control lever 23 which in the present example consists of a pull rod comprising a first and a second arm (referenced respectively 25 and 27) which extend on either side of a pivot axis 41 The pull tab 23 still carries an additional arm (reference 29). As shown more particularly by the figure 2A , the distal end of the arm 29 carries a pin 31 which is arranged to cooperate with the bearing surface 21.
  • the additional arm 29 constitutes a switch arm which forms part of the aforementioned braking system.
  • the pull tab 23 and the switch arm 29 are arranged to be controlled by the rod 17 so as to be in a first position ( Figure 1 ) when the rod is in neutral position, to be in a second position ( Figure 2A ) when the rod is in the first pulled position and to be in a third position ( Figure 3 ) when the rod is in the second pulled position.
  • the first arm 25 of the pull tab 23 of this example carries a stud (not shown) which is engaged in a groove (not shown) of the rod 17.
  • the pull tab 23 and the switch arm 29 pivot progressively clockwise, when the time-setting stem 17 is first brought from its neutral position ( Figure 1 ) to the first drawn position ( Figure 2A ), and then brought from the first drawn position to the second ( Figure 3 ).
  • the pin 31 being fixed to the end of the switch arm 29, it accompanies the pivoting of the pull rod by moving along a short arc of a circle (represented by a broken line and referenced 35 in the Figure 1 ) which is centered on the axis 41.
  • the short arc of a circle 35 can substantially be assimilated to a straight segment which extends parallel to the blade of the second spring 19.
  • pin 31 intercepts the folded part of the spring. If we refer again to the Figure 1 , it can be seen that when the pull rod 23 is in the first position, the pin 31 is located away from the second spring 19 and its bearing surface 21, so that the switch arm 29 does not interact with the surface of support 21. Referring then to the figure 2A , it can be seen that when the pull tab is in the second position, the pin 31 is resting against the bearing surface 21, so that the pin causes the spring 19 to bend, pushing it back.
  • the figure 2B shows all the elements already described in relation to the figure 1 , 2A and 3 , and it also shows a toothed mobile consisting of a date disc 37 provided with internal toothing. It will further be noted that the Figure 2B illustrates the time-setting stem 17 in the first pulled out position, the configuration illustrated in the figure 2B being therefore identical to that of the figure 2A .
  • the date disc 37 is arranged to be controlled from the movement (not shown) of the timepiece so as to be incremented once a day.
  • the date disc 37 can for example be driven from the hour wheel (not shown) by means of a 24-hour wheel (not shown) provided with a drive finger arranged to actuate at each revolution one of the teeth 39 of the internal toothing of the date disc 37.
  • the timepiece of the present example includes an indexing device consisting of the jumper 11 and by a first leaf spring 15 arranged to return the head of the jumper 11 against the internal toothing of the date disc 37.
  • the head of jumper 11 has two sides inclined in opposite directions. When a side presses against the tip of a tooth 39 of the date disc, the force exerted on the tooth by the jumper generates a torque which tends to bring the date disc back to a stable position in which the two sides press simultaneously against two consecutive teeth 39 (as shown in the figure 2B ).
  • the function of the jumper is to ensure that the date disc advances exactly by the value of one tooth each time it is actuated by the drive finger (not shown).
  • the time-setting stem 17 makes it possible in particular to correct the time indicated by the hands (not shown) when it is in the first pulled out position.
  • the time indicated by the hands passes through midnight
  • the drive finger (not shown) carried by the 24-hour wheel pushes back one of the teeth 39 of the date disc 37 so as to drive the latter.
  • a drawback of such a correction system is that the user of the timepiece risks causing multiple jumps of the date disc 37 if he manipulates the time-setting stem 17 too energetically. Indeed, when setting the time, the drive finger, which is connected to the hands, moves much faster than during the normal operation of the timepiece.
  • the time is corrected with the time-setting stem 17 in its first pulled-out position as illustrated in the Figures 2A and 2B .
  • the pin 31 exerts on the spring 19 a force which is oriented so as to return the jumper 11 counterclockwise. This force is therefore added to the restoring force exerted by the first leaf spring 15. It will therefore be understood that the force with which the head of the jumper 11 presses against the internal toothing of the date disc 37 is greater when the time setting 17 is in the first pulled out position only when it is in one or the other of its two other axial positions.
  • the force exerted by the head of the jumper 11 on the teeth 39 of the date disc 37 is at the origin of a resistive torque which opposes the rotation of the disc.
  • this resistant torque increases when the time-setting stem 17 is brought into the first pulled out position, due to the force exerted by the switch arm 29 on the second spring 19.
  • the second leaf spring 19, its bearing surface 21, the switch arm 29 and the pin 31 together form a braking system, and it will be understood that the latter is in a state active when the time-setting stem 17 is in the first pulled out position, and is on the other hand in an inactive state when the time-setting stem 17 is in the neutral position, as well as when it is in second drawn position.
  • the switch arm 29 deforms the spring 19 by exerting a force on the bearing surface 21, while in the inactive state, the switch arm 29 does not interact with the bearing surface 21.
  • the figure 4 is a partial view which shows the toothed wheel set, the indexing device, the time-setting stem and the braking system of a timepiece according to a second exemplary embodiment.
  • This second embodiment has many characteristics in common with the first. This is the reason why the following description will be limited to describing the characteristics of the second mode which have not already been described in relation to the first.
  • the elements illustrated in the figure 4 which are the same or equivalent to items shown in the figure 1 , 2A , 2B and 3 , are designated by the same reference numerals plus one hundred.
  • the indexing device is constituted by a jumper spring (referenced 111).
  • jumper spring 111 is formed of a leaf spring 119 which is integral with the frame of the timepiece by one of its ends and whose other end, which is free , constitutes the head 133 of the jumper.
  • the head 133 of the jumper can be bent as illustrated, so as to comprise two sides which are inclined in opposite directions and which are arranged to cooperate with the teeth 139 of the date disc 137.
  • Jumper spring 111 is arranged so as to allow selective indexing of date disc 137 in a plurality of angular positions. When the two sides of the head 133 of the jumper spring press simultaneously against two consecutive teeth 139, as illustrated in the figure 4 , the date disc 137 is in one of its stable positions.
  • the jumper spring 111 of the present example is constituted by a leaf spring 119, and it will therefore be understood that the latter fulfills both the jumper function and that of elastic means arranged to urge the head 133 of the jumper in the direction of the jumper. toothing of the date disc 137.
  • the leaf spring 119 is not only part of the indexing device, but that it also constitutes the spring of the braking system of the part of watchmaking.
  • the leaf spring 119 has a part folded over several times and forming a projection. This projecting portion is delimited on either side by two shoulders, and it will be understood that it constitutes a support surface (referenced 121).
  • the time-setting stem 117 is movable in translation between a neutral position, a first pulled out position and a second pulled out position, and it will be noted that the figure 4 shows the first position drawn.
  • the timepiece of this example also includes a control lever 123 which, as in the previous example, consists of a pull tab which can occupy three predefined positions; the latter being respectively associated with the three axial positions of the time-setting stem 117.
  • the timepiece comprises a commutator arm 129 which is integral with the pull-bar 123 by one of its ends and the other end of which carries a pin 131 which is arranged to cooperate with the support surface 121. Still referring to the figure 4 , it can be seen that the pin 131 bears against the bearing surface 121.
  • the braking system is in the active state when the time-setting stem is in the first drawn position.
  • the circular arc portions 135a and 135b are centered on the axis 141 around which the pull tab 123 pivots. It can also be seen that in the example illustrated, the short circular arc portions 135a, 135b can be assimilated to two straight line segments which extend substantially parallel to the support surface 121, as well as to the leaf spring 119. It will be understood that, when the pin moves on one of the paths 135a, 135b in arc of a circle, it can slide (or possibly roll) against the support surface 121, until it crosses one of the two shoulders which constitute its limits. Once past this shoulder, pin 131 is at a certain distance both from bearing surface 121 and from the rest of leaf spring 119. Switch arm 129 therefore no longer interacts with the bearing surface. In accordance with the second exemplary embodiment, the braking system is thus in the inactive state when the time-setting stem is in the neutral position, as when it is in the second pulled-out position.
  • the pressure exerted by the pin 131 on the bearing surface 121 therefore has the effect of further deforming the leaf spring, and this additional deformation itself has the effect of increasing the force exerted by the head 133 of the jumper spring 111 on the toothing of the date disc.
  • the invention is obviously not limited to embodiments in which the braking system is in the active state when the time-setting stem is in the first pulled out position, and is in the inactive state when the time-setting stem is in the neutral position and when it is in the second pulled-out position.
  • the braking system could for example be in the inactive state only when the time-setting stem is in the neutral position, and be in the active state as well when the stem is in the second pulled out position than when it is in the first pulled out position.
  • the braking system could be in the active state only when the time-setting stem is in second position drawn.
  • the number of axial positions between which the time-setting stem is movable could naturally be different from three.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Claims (9)

  1. Uhr, die ein gezahntes Drehteil (37; 137), eine Indexierungsvorrichtung, die eine Hebelfeder (11; 111) und elastische Mittel (15; 119) umfasst, die dazu gestaltet sind, den Kopf (133) der Hebelfeder derart gegen die Zahnung (39; 139) des gezahnten Drehteils zurückzuziehen, dass dieses letztere indexiert wird, und eine Zeigerstellungswelle (17; 117) umfasst, die zwischen einer neutralen Position und mindestens einer ersten herausgezogenen Position translatorisch beweglich ist, die das drehbare Betätigen des gezahnten Drehteils (37; 137) bei gleichzeitigem Drehen der Zeigerstellungswelle ermöglicht, dadurch gekennzeichnet, dass sie ein Bremssystem (19, 21, 29; 119, 121, 129) umfasst, das eine Feder (19; 119), die fest mit der Hebelfeder (11; 111) verbunden ist, und eine Auflagefläche (21; 121) umfasst, die an der Feder befestigt ist, und ferner einen Schaltarm (29; 129) umfasst, der dazu gestaltet ist, durch die Zeigerstellungswelle (17; 117) gesteuert zu werden, wobei das Bremssystem dazu gestaltet ist, sich in einem inaktiven Zustand zu befinden, in dem der Schaltarm (29; 129) nicht mit der Auflagefläche (21; 121) interagiert, wenn die Zeigerstellungswelle (17; 117) sich in der neutralen Position befindet, und sich in einem aktiven Zustand zu befinden, in dem der Schaltarm (29; 129) die Feder (19; 119) verformt, indem er eine Kraft auf die Auflagefläche (21; 121) ausübt, wenn die Zeigerstellungswelle sich in der ersten herausgezogenen Position befindet.
  2. Uhr nach Anspruch 1, dadurch gekennzeichnet, dass die Zeigerstellungswelle (17; 117) zwischen einer neutralen Position, einer ersten herausgezogenen Position und einer zweiten herausgezogenen Position translatorisch beweglich ist, und dadurch, dass das Bremssystem (19, 21, 29; 119, 121, 129) dazu gestaltet ist, sich im aktiven Zustand zu befinden, in dem der Schaltarm (29; 129) die Feder (19; 119) verformt, indem er eine Kraft auf die Auflagefläche (21; 121) ausübt, wenn die Zeigerstellungswelle sich in der ersten herausgezogenen Position befindet, und sich im inaktiven Zustand zu befinden, in dem der Schaltarm nicht mit der Auflagefläche interagiert, wenn die Zeigerstellungswelle sich in der neutralen Position befindet und wenn sie sich in der zweiten herausgezogenen Position befindet.
  3. Uhr nach Anspruch 1, dadurch gekennzeichnet, dass sie einen Schalthebel (23; 123) umfasst, der dazu gestaltet ist, derart durch die Zeigerstellungswelle (17; 117) geschaltet zu werden, dass er sich in einer ersten Position befindet, wenn die Zeigerstellungswelle sich in der neutralen Position befindet, und sich in einer zweiten Position befindet, wenn die Zeigerstellungswelle sich in der ersten herausgezogenen Position befindet, und dadurch, dass der Schaltarm (29; 129) des Bremssystems (19, 21, 29; 119, 121, 129) fest mit dem Schalthebel (23; 123) verbunden ist.
  4. Uhr nach Anspruch 2 und 3, dadurch gekennzeichnet, dass der Schalthebel (23; 123) dazu gestaltet ist, sich in einer dritten Position zu befinden, wenn die Zeigerstellungswelle (17; 117) sich in der zweiten herausgezogenen Position befindet.
  5. Uhr nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Hebelfeder (11), der Indexierungsvorrichtung (11, 15) um eine Achse (13) schwenkt, und dadurch, dass die elastischen Mittel (15) dazu gestaltet sind, die Hebelfeder winklig zurückzuziehen.
  6. Uhr nach Anspruch 5, dadurch gekennzeichnet, dass die Feder (19) des Bremssystems (19, 21, 29) an einem Ende fest mit der Hebelfeder (11) verbunden ist, wobei die Feder (19) und die Hebelfeder (11) die beiden Arme eines Indexierungshebels bilden.
  7. Uhr nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Hebelfeder (111) der Indexierungsvorrichtung eine Rastenfeder ist, die aus einem Federblatt (119) besteht, dessen eines Ende den Kopf (133) der Hebelfeder trägt und dessen anderes Ende an dem Gestell der Uhr befestigt ist, wobei die elastischen Mittel der Indexierungsvorrichtung aus dem Federblatt (119) der Rastenfeder bestehen.
  8. Uhr nach Anspruch 7, dadurch gekennzeichnet, dass die Feder des Bremssystems (119, 121, 129) aus dem Federblatt (119) der Rastenfeder (111) besteht, wobei die Auflagefläche (121) fest mit dem Federblatt (119) verbunden ist.
  9. Uhr nach Anspruch 8, dadurch gekennzeichnet, dass der Schaltarm (129) einen Sporn (131) trägt, der dazu gestaltet ist, sich auf einem Weg (135) zu verlagern, der im Wesentlichen parallel zur Auflagefläche (121) ist, wenn die Zeigerstellungswelle (117) von einer axialen Position in eine andere übergeht, und dadurch, dass das Federblatt (119) eine Ausbauchung aufweist, deren Scheitel die Auflagefläche (121) bildet.
EP20163938.2A 2020-03-18 2020-03-18 Uhr, die eine gezahnte scheibe umfasst, die durch eine raste indexiert ist Active EP3882716B1 (de)

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EP20163938.2A EP3882716B1 (de) 2020-03-18 2020-03-18 Uhr, die eine gezahnte scheibe umfasst, die durch eine raste indexiert ist

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EP20163938.2A EP3882716B1 (de) 2020-03-18 2020-03-18 Uhr, die eine gezahnte scheibe umfasst, die durch eine raste indexiert ist

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EP3882716A1 EP3882716A1 (de) 2021-09-22
EP3882716B1 true EP3882716B1 (de) 2022-08-10

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5517353B1 (de) * 1970-03-11 1980-05-10
JPS4939705B1 (de) * 1970-03-16 1974-10-28

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