EP3650953B1 - Uhrmechanismus, der einen stern und eine sperrfeder umfasst - Google Patents

Uhrmechanismus, der einen stern und eine sperrfeder umfasst Download PDF

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Publication number
EP3650953B1
EP3650953B1 EP18205271.2A EP18205271A EP3650953B1 EP 3650953 B1 EP3650953 B1 EP 3650953B1 EP 18205271 A EP18205271 A EP 18205271A EP 3650953 B1 EP3650953 B1 EP 3650953B1
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EP
European Patent Office
Prior art keywords
star
rigid element
slide
timepiece mechanism
jumper spring
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EP18205271.2A
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English (en)
French (fr)
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EP3650953A1 (de
Inventor
Samuel Tanner
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Priority to EP18205271.2A priority Critical patent/EP3650953B1/de
Publication of EP3650953A1 publication Critical patent/EP3650953A1/de
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    • 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
    • G04B13/00—Gearwork
    • G04B13/002—Gearwork where rotation in one direction is changed into a stepping movement
    • 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
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • G04B27/005—Mechanical devices for setting the time indicating means stepwise or on determined values

Definitions

  • the present invention relates to a watch mechanism comprising a star and a jumper spring biased against the star, the jumper spring comprising a rigid element having a protrusion arranged to cooperate with the star, and at least one elastic portion which is arranged to at least partially surround the star, the watch mechanism further comprising a support on which the spring-jumper is movably mounted, the support comprising a support structure arranged to tension the spring-jumper while retaining said at least one elastic portion so that the rigid element is biased against the star, and further comprising guide means arranged to allow the rigid element to be lifted by one of the teeth of the star and then fall back between two teeth of the star. this one.
  • star usually designates a disc pivoted about an axis and provided with triangular teeth adapted to cooperate with a jumper.
  • jumper it usually designates an organ terminated by two inclined planes which press between the points of two consecutive teeth of a star under the action of a spring, to maintain it in a certain angular position. When the star is actuated, the teeth raise the jumper which then falls between two other teeth. A jumper generally allows the star to move in both directions.
  • a known application of mechanisms comprising a star and a jumper returned against the star by a spring is that of elastic coupling mechanisms.
  • These mechanisms are used in particular in time-setting devices which make it possible to advance, step by step, the hour hand of a timepiece, to the value of one hour at each step, without driving the minute hand.
  • Timepieces equipped with this type of device have the advantage of allowing their user to very easily reset the timepiece to the time, when he passes from one time zone to another during a travel.
  • a timepiece permitting the correction of the time zone may for example comprise a minute hand carried by a roadway driven in rotation by the movement, and an hour wheel (or barrel wheel) driven by the roadway via a timer cog.
  • the hour wheel of such a timepiece does not, in principle, directly carry the hour hand. Indeed, the latter is carried by a second hour barrel which is rotatably mounted coaxially with the hour wheel.
  • An elastic coupling mechanism comprising a star and a jumper returned against the star by a spring, is also interposed between the hour wheel and the second barrel. The elastic coupling mechanism allows the hour wheel to drive the second barrel while offering a clutch / disengage function and selective indexing of the hour hand in twelve angular positions evenly spaced from each other on the turn of hours.
  • the hour wheel does not, in principle, carry the hour hand. It is worth pointing out, however, that other well-known timepieces have two hour hands. A classic hour hand is carried in the traditional way by the hour wheel, and an additional hour hand is carried by the second barrel.
  • the figures 1 and 2 are top plan views of two elastic coupling mechanisms of the prior art, each comprising a star and a jumper biased against the star by a spring.
  • a star with twelve teeth 24 fixed concentrically on a second gun for hours 22, a jumper 25 pivoted (in D) on the plate of the hour wheel 27, and a return spring 26 also fixed on the plate of the hour wheel.
  • the known elastic coupling mechanism which is illustrated in figure 1 , usually gives satisfaction.
  • the mechanism of the figure 1 may cause difficulties, especially during assembly.
  • the known elastic coupling mechanism which is shown in figure 2 is taken from the patent document FR 2 307 301 . It also conforms to the definition given in the preamble of the present patent application.
  • the jumper spring 8 is fixed to the hours wheel board by a pin 9. It can also be seen that the jumper spring 8 is annular in shape and that it surrounds the star 7.
  • the jumper spring 8 is fixed on the plate of the hours wheel 4 inside the rim 3 by the pin 9.
  • the combination of the pin 9 and the rim 3 constitutes guide means preventing the jumper spring 8 to pivot around the pin 9, while leaving the rigid element 11 free to move by deformation of the elastic portion 12, so as to allow the rigid element to be lifted by one of the teeth of the star 17 and then to fall back between two teeth of the latter.
  • the pin 9 also acts as a support structure making it possible to put the spring-jumper 8 under tension, so that the rigid element 11 is biased against the star 7.
  • an advantage of that of the figure 2 is that it eliminates having two components to power up with each other. This difference is likely to facilitate assembly of the mechanism.
  • the mechanism of figure 2 there are also certain flaws.
  • the production of an hour wheel 4 which carries a circular rim 3 on its plate involves relatively complex machining or finishing operations.
  • the presence of the rim 3 has the effect of considerably increasing the thickness of the hours wheel 4.
  • the circular rim does not completely prevent the jumper spring 8 from pivoting by a certain angle. around the pin 9 when the star 7 is actuated and the teeth cause the deformation of the elastic portion 12 by lifting the rigid part 11. This residual pivoting can make the indexing of the star 7 and of the star less precise. hour hand.
  • An aim 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 object by providing a horological mechanism which comprises a star and a jumper spring and which is in accordance with claim 1 appended hereto.
  • the guide means which allow the rigid element to be lifted by one of the teeth of the star and then to fall back between two teeth of the latter are formed by at least two rectilinear and parallel slides. , which are arranged to move the rigid element in translation parallel to a determined direction relative to the support.
  • the jumper spring comprises at least one elastic arm arranged to at least partially surround the star, and which is secured to the rigid element by one of its ends (called the proximal end).
  • the support structure includes a stop against which the distal end of the elastic arm rests.
  • the jumper spring comprises two elastic arms which are integral with the rigid element on either side of the latter and which are oriented so that they approach the one from the other towards their respective distal ends, the latter being separated from each other by a space.
  • the support structure comprises two stops against which the distal ends of the two elastic arms respectively come to rest. It will be understood that the fact of having two elastic arms separated from one another, but attached to the rigid element on either side of the latter, gives the possibility of arming the arms one after the other. .
  • the fact of having two elastic arms arranged on either side of the rigid part has the advantage of making it possible to reduce the stresses to which the slides are subjected.
  • the figure 3 is a plan view of an elastic coupling mechanism which constitutes a first exemplary embodiment of the watch mechanism comprising a star and a jumper spring of the invention.
  • the coupling mechanism of the figure 3 is part of a time-setting device that allows you to advance, step by step, the hour hand of a timepiece, to the value of one hour at each step, without driving the minute hand. It will be understood that the figure 3 illustrates only the elastic coupling mechanism, the time-setting device therefore not being shown as a whole.
  • the figure 3 shows the hours wheel 65 of a timepiece, a twelve-tooth star 67 which is fixed concentrically on a second hour barrel (not shown) forming part of the time-setting device, and finally a spring- jumper 81 which is carried by the plate of the hour wheel 65.
  • the jumper spring 81 comprises a rigid element 83 having a protrusion 85 arranged to cooperate with the star 67, and a single elastic arm 87 which is integral with the rigid element 83 by one of its ends, and which partially surrounds the star 67. It can be seen that, unlike what was the case in particular with the jumper spring of the prior art illustrated in FIG. figure 2 , the spring-jumper 81 of the figure 3 does not constitute a ring which would completely surround the star 67.
  • the elastic coupling mechanism illustrated in figure 3 comprises a support on which the jumper spring is mounted, and guide means constituted by a plurality of rectilinear and parallel slides, which are arranged to allow the rigid element 83 to be lifted by one of the teeth of the star 67 and then fall back between two teeth of the latter.
  • the slides are each formed of a slide and of a slide arranged to cooperate with the slide.
  • One of the two components of each slide being integral with the support (here constituted by the plate of the hour wheel 65) and the other component being integral with the rigid element 83.
  • the rigid element 83 of the jumper spring 81 shown comprises two slideways in the form of oblongs (arranged parallel to each other). It can be seen that a first slide 89 is arranged close to the protrusion 85, and that the other slide 91 is arranged close to the junction between the rigid part 83 and the proximal end of the arm. elastic 87.
  • two pins (referenced 90 and 92), acting as a slide, protrude from the plate of the hour wheel 65. The two pins are sized so that they can each be inserted into, and guided by, one of the two slides 89 and 91.
  • the two slides each consisting of a pin and an oblong, together form guide means which, in accordance with the invention, allow the rigid element 83 to move in translation parallel to a determined direction relative to the support. It can be seen that the positions of the two slides 89 and 91 are staggered in the determined direction. This feature helps prevent jump spring 81 from pivoting. It can also be seen that, in the example illustrated, the determined direction is parallel to the radius of the star 67 which passes through the top of the prominence 85.
  • the distal end of the elastic arm 87 bears against a stop pin (referenced 95) which projects from the plate of the hours wheel 65.
  • the pin stopper 95 is positioned so that the radius of the star 67 which passes through the stop pin 95 makes an angle ⁇ with the radius of the star which passes through the apex of the prominence 85. This angle ⁇ is equal to 156 °.
  • the protrusion 85 of the rigid element 83 rests between the points of two consecutive teeth of the star 67.
  • the stop pin is arranged so as to keep the elastic arm 87 away from its rest position, which has the effect of recalling the rigid element 83 against the star 67.
  • the stop pin 95 acts as a stop structure which, according to the invention, is arranged to force the jump spring 81 by retaining the elastic arm 87 away from its rest position.
  • the angle ⁇ between the radius of the star 67 which passes through the stop pin 95 and that which passes through the top of the protrusion 85 belongs to the interval between 150 ° and 210 °. It has been seen that in the embodiment which is the subject of the present example, the determined direction in which the rigid element 83 of the spring-jumper 81 is guided in translation is parallel to the radius of the star 67 which passes through the top of the protrusion 85. Under these conditions, the return force in the determined direction is always equal to at least twice the transverse force . This feature prevents the slides from seizing up.
  • the figure 4 is a plan view of an elastic coupling mechanism which constitutes a second exemplary embodiment of the watch mechanism comprising a star and a jumper spring of the invention.
  • the figure 4 shows the hours wheel 15 of a timepiece, a star with twelve teeth 17 which is fixed concentrically on a second hour barrel 19 forming part of the time-setting device, and finally a jumper spring 31 which is carried by the plate of the hour wheel 15.
  • the jumper spring 31 comprises a rigid element 33 having a protrusion 35 arranged to cooperate with the star 17, and two elastic arms 37a, 37b integral with the rigid element 33 on either side of the latter and oriented so that they approach each other in the direction of their respective distal ends, the latter being separated from one another by an area.
  • the spring-jumper 31 generally has the shape of a ring which surrounds the star 17, the ring being open at the level of the space which separates the distal ends of the two curved elastic blades 37a, 37b. It can also be seen that, in the example illustrated, the two elastic arms 37a, 37b are in the form of straight blades.
  • the elastic coupling mechanism and in particular its jumper spring, are symmetrical with respect to an axis which passes through the top of the prominence 35 of the rigid element 33, as well as by the axis of rotation of the star 17.
  • the protrusion 35 is formed by two inclines which are symmetrical to each other and which meet in a vertex located on the axis of symmetry.
  • the two elastic strips 37a and 37b are also symmetrical to one another.
  • the rigid element 33 of the spring-jumper generally has the shape of a sector crown, the inner edge of which has a symmetrical bump in its middle formed by the protrusion 35.
  • the elastic coupling mechanism illustrated in figure 4 comprises a support on which the jumper spring is mounted, and guide means arranged to allow the rigid element 33 to be lifted by one of the teeth of the star 17 and then to fall back between two teeth of the latter .
  • the guide means are constituted by a plurality of slides, each of these being formed of a slide and of a slide arranged to cooperate with the slide, one of them. these two components of the slide being integral with the support (here constituted by the plate of the hour wheel 15) and the other component being integral with the rigid element.
  • the rigid element 33 of the spring-jumper 31 shown comprises three slideways in the form of oblongs (arranged parallel to the axis of symmetry).
  • a first slide 39 is arranged on the axis of symmetry, and the other two slideways 41a, 41b are arranged symmetrically on either side of the rigid element 33, at the junction between the latter and one of the elastic strips 37a or 37b.
  • three pins (referenced 40, 42a and 42b), acting as a slide, protrude from the plate of the hour wheel 15. The three pins are sized so that they can each be inserted into, and guided by. , one of the three slides 39, 41a and 41b. We can see that the three pins are not aligned, but are arranged at the three vertices of an isosceles triangle.
  • the pin 40 is inserted into the oblong 39 and the two pins 42a and 42b are respectively inserted into the oblongs 41a and 41b.
  • the prominence is guided in translation so as to move on the axis of symmetry, and therefore a fortiori on a line passing through the axis of rotation of the star 17 It will further be understood that because the oblongs 39, 41a and 41b are parallel and the three pins 40, 42a and 42b are not aligned, the jumper spring 31 is prevented from pivoting.
  • the two stop pins 45, 46 therefore play the role of a stop structure which, according to the invention, is arranged to force the jump spring 31 by retaining the two curved elastic leaves 37a, 37b so that the rigid element 33 is biased against the star 17. It will also be noted that the forces exerted by the two stop pins 45, 46 on the curved elastic leaves 37a, 37b are symmetrical, so that their resultant is oriented parallel to the axis of symmetry. It will therefore be understood that the resulting force exerted by the stop pins 45, 46 on the jump spring 31 is oriented in the determined direction in which the rigid element 33 of the jump spring 31 is guided in translation.
  • the figure 5 is a plan view of an elastic coupling mechanism which is in accordance with a third exemplary embodiment of the clockwork mechanism comprising a star and a jumper spring of the invention.
  • the elastic coupling mechanism shown in figure 5 is very similar to that of the figure 4 .
  • the differences between the two embodiments shown are limited to a few characteristics of the jumper spring.
  • the elastic arms 137a and 137b of the jumper spring 131 of the figure 5 are in shape curved blades instead of straight blades.
  • each of the two slides 141a and 141b which are arranged symmetrically on the rigid element 133, on either side of the axis of symmetry, is formed of a single lateral guide surface against which the one of the two pins 142a, 142b comes to rest.
  • the side guide surfaces shown in the figure 5 are outer guide surfaces. It will be understood, however, that, according to a variant, the slides 141a and 141b could be constituted by internal guide surfaces.
  • the figure 6 is a plan view of an elastic coupling mechanism which is in accordance with a fourth exemplary embodiment of the clockwork mechanism comprising a star and a jumper spring of the invention.
  • the elastic coupling mechanism shown in figure 6 is very similar to those represented in the figures 4 and 5 .
  • the differences between the different embodiments shown are limited to a few characteristics of the jumper spring.
  • the angle at the center which underlies the rigid element 233 in the form of a crown sector illustrated in figure 6 is greater than 180 degrees, which is not the case with the rigid elements 33 and 133 shown in the figures 4 and 5 .
  • the two slideways 241a and 241b in the form of oblongs are not arranged at the junctions between the rigid element 233 and the two elastic arms 237a and 237b.
  • the two oblongs are respectively arranged on two appendages of the rigid element 233, and these two appendages extend substantially parallel to the elastic arms so that they extend the rigid element beyond the junctions of the rigid element 233 with the two elastic arms 237a and 237b.
  • the slide 239 which is arranged on the axis of symmetry, is constituted by a slot between two parallel flexible blades (respectively referenced 247 and 248).
  • the width of the slot is slightly less than the diameter of the pin 240 which is inserted into the slot.
  • the two flexible blades 247 and 248 grip the pin 240 which has the possibility of sliding in the slot without any lateral play.
  • the figure 7 is a plan view of an elastic coupling mechanism which is in accordance with a fifth exemplary embodiment of the clockwork mechanism comprising a star and a jumper spring of the invention.
  • the elastic coupling mechanism shown in figure 7 is particularly similar to that of the figure 6 .
  • the differences between the two embodiments are limited to a few characteristics of the jumper spring.
  • the jumper spring 331 shown in figure 7 comprises two small auxiliary jumpers (referenced respectively 351 and 352) which are arranged to act as brakes so as to attenuate the angular acceleration caused by the jumper 331 when it falls between two teeth of the star 317.
  • the two flexible blades 347 and 348 of the slideway 339 arranged on the axis of symmetry of the rigid element 333 are secured to the latter by their two ends, instead of just one as is the case with flexible blades 247 and 248 represented in the figure 6 . It will be understood that the slide 339 also makes it possible to obtain guidance without lateral play.
  • the jumper spring of a watch mechanism according to the invention is not necessarily symmetrical.
  • the prominence arranged to cooperate with the star could not be symmetrical.
  • the direction parallel to which the rigid element moves in translation could also not be determined so that the prominence moves on a line passing through the axis of rotation of the star.
  • the horological mechanism of the invention is not limited to the variants in which the star is provided with triangular teeth. Indeed, any toothed wheel whose teeth are suitable for cooperating with a jumper can be used as a star.

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

Claims (13)

  1. Uhrmechanismus, der einen Stern und eine Sperrfeder umfasst, die ein starres Element (33; 83; 133; 233; 333), das einen Vorsprung (35; 85) aufweist, der dazu gestaltet ist, mit dem Stern zusammenzuwirken, und mindestens einen elastischen Abschnitt (37a 37b; 87; 137a, 137b; 237a, 237b; 337a, 337b) umfasst, der dazu gestaltet ist, den Stern (17; 67; 117; 217; 317) zumindest teilweise zu umgeben, und ferner eine Stütze (15; 65; 115) umfasst, an der die Sperrfeder (31; 81; 131; 231; 331) beweglich gelagert ist, wobei die Stütze eine Auflagestruktur umfasst, die dazu gestaltet ist, die Sperrfeder einzuzwängen, indem sie den mindestens einen elastischen Abschnitt zurückhält, derart dass das starre Element gegen den Stern zurückgezogen wird, und Führungsmittel umfasst, die dazu ausgestaltet sind, es dem starren Element (33; 83; 133; 233; 333) zu ermöglichen, von einem der Zähne des Sterns (17; 67; 117; 217; 317) angehoben zu werden und dann wieder zwischen zwei Zähnen davon herunterzufallen; dadurch gekennzeichnet, dass der mindestens eine elastische Abschnitt aus einem elastischen Arm (37a, 37b; 87; 137a, 137b; 237a; 237b; 337a, 337b) besteht, der mit dem starren Element (33; 83; 133; 233; 333) durch eines seiner Enden, das sogenannte proximale Ende, fest verbunden ist, dadurch, dass die Auflagestruktur mindestens einen Halt (45, 46; 95) umfasst, gegen den das distale Ende des elastischen Arms (37a, 37b; 87; 137a, 137b; 237a 237b; 337a, 337b) in Auflage gelangt, und dadurch, dass die Führungsmittel aus mehreren geraden und parallelen Kulissen (39, 40, 41a, 41b; 89, 90, 91, 92; 141a, 141b, 142a, 142b; 239, 240, 241a, 241b; 339, 340) bestehen, die dazu gestaltet sind, es dem starren Element (33; 83; 133; 233; 333) zu ermöglichen, sich translatorisch parallel zu einer bestimmten Richtung in Bezug auf die Stütze (15) zu verlagern.
  2. Uhrmechanismus nach Anspruch 1, dadurch gekennzeichnet, dass die Sperrfeder (3) zwei elastische Abschnitte (37a, 37b; 137a, 137b; 237a, 237b; 337a, 337b) umfasst, dadurch, dass die elastischen Abschnitte aus zwei elastischen Armen bestehen, die fest mit dem starren Element (33; 133; 233; 333) auf beiden Seiten dieses letzteren über ihr proximales Ende verbunden sind, wobei die zwei elastischen Arme derart ausgerichtet sind, dass sie sich in Richtung ihres distalen Endes aneinander annähern, wobei die distalen Enden der zwei elastischen Arme (37a; 37b; 137a, 137b; 237a, 237b; 337a, 337b) durch einen Raum voneinander getrennt sind, und dadurch, dass die Auflagestruktur zwei Halte (45, 46) umfasst, gegen die die distalen Enden der zwei elastischen Arme jeweils in Auflage gelangen.
  3. Uhrmechanismus nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kulissen jeweils von einer Gleitschiene (39, 41a, 41b; 89, 91; 141a, 141b; 239, 241a, 241b; 339) und aus einem Schlitten (40, 42a, 42b; 90, 92; 142a, 142b; 240; 340) gebildet sind, der dazu gestaltet ist, mit der Gleitschiene zusammenzuwirken, wobei eines von der Gleitschiene und dem Schlitten fest mit der Stütze verbunden ist, während das andere fest mit dem starren Element der Sperrfeder verbunden ist.
  4. Uhrmechanismus nach Anspruch 3, dadurch gekennzeichnet, dass die Gleitschienen (39, 41a, 41b; 89, 91; 141a, 141b; 239, 241a, 241b; 339) in dem starren Element der Sperrfeder gebildet sind, und dadurch, dass die Schlitten aus Sperrstiften (40, 42a, 42b; 90, 92; 142a, 142b; 240; 340) bestehen, die von der Stütze (15; 65; 115) hervorstehen.
  5. Uhrmechanismus nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass mindestens eine der Gleitschienen aus einem Langloch besteht.
  6. Uhrmechanismus nach einem der Ansprüche 3, 4 und 5, dadurch gekennzeichnet, dass die Führungsmittel drei Kulissen umfassen, die jeweils aus drei Gleitschienen (39, 41a, 41b; 141a, 141b; 239, 241a, 241b; 339), die in der bestimmten Richtung ausgerichtet sind, und aus drei Sperrstiften (40, 42a, 42b; 142a, 142b; 240; 340) bestehen, wobei die Sperrstifte an der Stütze (15; 115) an den drei Spitzen eines nicht-degenerierten Dreiecks angeordnet sind.
  7. Uhrmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Richtung der translatorischen Verlagerung des starren Elements (33; 83; 133; 233; 333) derart bestimmt ist, dass die Führungsmittel den Vorsprung (35, 85) auf einer Geraden bewahren, die durch die Drehachse des Sterns (17; 67; 117; 217; 317) verläuft.
  8. Uhrmechanismus nach Anspruch 6, dadurch gekennzeichnet, dass eine (39) der drei Kulissen (39, 41a, 41b) derart gestaltet ist, dass ihre Achse mit einem Radius des Sterns (17) zusammenfällt, und dadurch, dass die zwei anderen Kulissen (41a, 41b) symmetrisch auf beiden Seiten des Radius des Sterns angeordnet sind.
  9. Uhrmechanismus nach Anspruch 8, dadurch gekennzeichnet, dass die Gleitschienen (141a und 141b) der zwei anderen Kulissen, die symmetrisch an dem starren Element (133) auf beiden Seiten des Radius des Sterns (117) angeordnet sind, jeweils aus einer einzigen seitlichen Führungsoberfläche gebildet sind, gegen die der Sperrstift (142a oder 142b) der Kulisse gestaltet ist, in Auflage zu gelangen.
  10. Uhrmechanismus nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Gleitschiene (239), die auf der Symmetrieachse angeordnet ist, aus einem Spalt zwischen zwei parallelen biegsamen Klingen (247, 248) besteht, wobei der Spalt eine Breite aufweist, die leicht kleiner als der Durchmesser des Sperrstifts (240) ist, der dazu gestaltet ist, in den Spalt eingesetzt zu werden.
  11. Uhrmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Vorsprung (35) des starren Elements (33) der Sperrfeder (31) zwei Schrägen umfasst, die durch eine Spitze getrennt sind, wobei die Schrägen symmetrisch in Bezug auf einen Radius des Sterns (17) angeordnet sind, wobei der Radius parallel zur bestimmten Richtung ausgerichtet ist und dabei durch die Spitze verläuft.
  12. Uhrmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Form der Sperrfeder (31) allgemein eben ist.
  13. Uhrmechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sperrfeder (31) symmetrisch in Bezug auf einen Radius des Sterns (17) ist, wobei der Radius parallel zur bestimmten Richtung ausgerichtet ist, derart, dass ein von der Sperrfeder (31) erzeugtes Stillstandsdrehmoment das gleiche ist, wenn der Stern (17) in einem Sinn oder im anderen betätigt wird.
EP18205271.2A 2018-11-08 2018-11-08 Uhrmechanismus, der einen stern und eine sperrfeder umfasst Active EP3650953B1 (de)

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EP1396765B1 (de) * 2002-09-03 2006-11-22 Frédéric Piguet S.A. Weltzeituhr mit Weckermechanismus
JP2004184259A (ja) * 2002-12-04 2004-07-02 Seiko Instruments Inc カレンダ機構付き時計
JP4917909B2 (ja) * 2007-02-15 2012-04-18 セイコーインスツル株式会社 ジャンパ構造体並びにこれを備えたカレンダ機構及びカレンダ機構付き時計

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