EP0029204B1 - Mechanism for positioning a centre wheel - Google Patents

Mechanism for positioning a centre wheel Download PDF

Info

Publication number
EP0029204B1
EP0029204B1 EP80106960A EP80106960A EP0029204B1 EP 0029204 B1 EP0029204 B1 EP 0029204B1 EP 80106960 A EP80106960 A EP 80106960A EP 80106960 A EP80106960 A EP 80106960A EP 0029204 B1 EP0029204 B1 EP 0029204B1
Authority
EP
European Patent Office
Prior art keywords
wheel
pinion
center wheel
center
friction
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.)
Expired
Application number
EP80106960A
Other languages
German (de)
French (fr)
Other versions
EP0029204A1 (en
Inventor
Cyril Vuilleumier
Bruno Erni
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.)
SSIH Management Services SA
Original Assignee
Societe Suisse pour lIindustrie Horlogere Management Services SA
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 Societe Suisse pour lIindustrie Horlogere Management Services SA filed Critical Societe Suisse pour lIindustrie Horlogere Management Services SA
Publication of EP0029204A1 publication Critical patent/EP0029204A1/en
Application granted granted Critical
Publication of EP0029204B1 publication Critical patent/EP0029204B1/en
Expired legal-status Critical Current

Links

Images

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
    • G04B35/00—Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears
    • 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

Definitions

  • the present invention relates on the one hand to a mechanism for positioning a center wheel in an electronic timepiece with analog display comprising a jumper, the first end of which is terminated by two inclined planes cooperating with the teeth of the center wheel and whose second end is rotatably mounted with fatty friction on the plate, and on the other hand a method of positioning a center wheel using this mechanism.
  • Such a mechanism is known from the prior art and is found to be applied in certain chronographs or in certain electronic watches with analog display in order to position the second hand with precision with respect to the indexes carried on the dial. Precise positioning of the hand relative to the index finger is even more desirable in electronic watches comprising an hour hand and a minute hand only and where the minute hand, driven by a stepping motor, advances 'one division per minute. It will be understood that in this case the eye has plenty of time to judge whether the hand is correctly positioned relative to the index, which can represent a guarantee as to the good quality of the watch.
  • the positioning of the jumping seconds or minute hands with respect to the indexes of a dial depends on the play existing in the gear train which is located between the motor axis and the center wheel which carries the needle, the circle of the mobile and regularity with which the divisions of the dial are marked.
  • a positioning jumper is generally used which acts directly on the teeth of the center wheel which carries either the minute hand or the second hand. In this way, the angular pitch of the needle is found to be strictly the same as that of the toothing of the wheel.
  • FIG. 1 shows a mechanism for positioning a center wheel according to the prior art.
  • This mechanism comprises a jumper 1 constituted by an elastic blade, the first end of which carries a ruby polyhedron 2 which cooperates with the toothing 3 of the center wheel 4. It is more simply possible to bend the end of the blade to form a triangle, the two inclined planes cooperating with the teeth.
  • the other end of the jumper 1 is fixed on a ferrule 5 which can pivot frictionally about an axis 6 itself secured to a stud 7. in this stud are made two oblong holes 8 and 9.
  • the hole 8 receives a circular group 10 fixed to the plate and the hole 9, a screw 11 screwed into the plate.
  • the center wheel is driven by the pinion 12 of an intermediate wheel 13 which meshes with the pinion 14 of a stepping motor.
  • FIG. 2 is a section of the positioning mechanism of the center wheel according to the invention.
  • FIG. 3 is a simplified plan view of the same mechanism along the dotted line AA shown in FIG. 2.
  • FIG. 2 shows the cog train intended to drive the minute and hour hands of a timepiece.
  • the pinion 14 drives a mobile 29 composed of a wheel 16 and a pinion 17.
  • the center wheel integral with the axis 19 carrying the minute hand meshes on the pinion 17.
  • the axis 20 of the hour hand is rotated by the gear train composed of the pinion 21 secured to the center wheel 4 and the timer formed by the gears 22, 23 and 24.
  • the wheel 24 is formed in one piece with the axis 20 carrying the hour hand.
  • the axes of the various mobiles are rotatably mounted in bearings 25 and 26 driven into the plate 27 and the bridge 28 of the timepiece.
  • Figure 3 is a plan view of the same mechanism along the dotted line AA shown in Figure 2.
  • Figure 3 does not show the timer formed by the gears 21, 22, 23 and 24 which is not necessary to understanding the invention.
  • the mobile 29 is composed of a pinion 17 meshing on the center wheel 4 and a wheel 16 frictionally mounted with respect to said pinion 17.
  • Figure 3 shows how the wheel 16 is made.
  • a classic toothing it is perforated in its center by stamping two circular parts 30 and two rectilinear parts 31 leading to a central circular recess 32.
  • the diameter of said recess 32 is chosen slightly smaller than the diameter of the tigeron 18 (FIG. 2) of the mobile 29 so that when the wheel is inserted on the tigeron there is fatty friction on the one hand relative to the other .
  • the friction torque is chosen, on the one hand, sufficiently large so that in normal operation of the watch the transmission of the movement takes place without slipping and, on the other hand, sufficiently low so that during manual adjustment it is possible to angularly slide the wheel in relation to its tigeron and finally in relation to the pinion which is one with it.
  • Figure 2 also shows that the upper part of the tigeron 18 includes an overhang 34 which prevents the wheel 16 from coming out of its housing. A good seat to the wheel 16 is ensured by practicing in the pinion 17 a circular groove 35.
  • the invention is not limited to the description above which explains a preferred embodiment of the mobile 29.
  • the wheel 16 may comprise for example six rays 33 distributed around the circumference. It can also be openwork; in this case, an elastic washer is superimposed on it which, retained by the protrusion 34, provides the requested friction.
  • FIGS. 2 and 3 show that the toothing 3 of the center wheel 4 cooperates with a jumper 1, one of the ends of which is terminated by a ruby polyhedron 2.
  • the other end of the jumper is secured to a ferrule 5 which is mounted with fatty friction on an axis 6 fixed to the plate as can be seen in FIG. 3.
  • this construction is considerably simplified since it is no longer necessary to provide the stud 7, the pin 10 and the screw 11 shown in FIG. 1.
  • center wheel which carries the minute hand The description mentions a center wheel which carries the minute hand.
  • the invention can naturally also be applied to a center wheel which carries the second hand.

Landscapes

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

Description

La présente invention concerne d'une part un mécanisme de positionnement d'une roue de centre dans une pièce d'horlogerie électronique à affichage analogique comprenant un sautoir dont la première extrémité est terminée par deux plans inclinés coopérant avec la denture de la roue de centre et dont la seconde extrémité est montée rotativement à frottement gras sur la platine, et d'autre part une méthode de positionnement d'une roue de centre utilisant ce mécanisme.The present invention relates on the one hand to a mechanism for positioning a center wheel in an electronic timepiece with analog display comprising a jumper, the first end of which is terminated by two inclined planes cooperating with the teeth of the center wheel and whose second end is rotatably mounted with fatty friction on the plate, and on the other hand a method of positioning a center wheel using this mechanism.

Un tel mécanisme est connu de l'art antérieur et on trouve son application dans certain chronographes ou dans certaines montres électroniques à affichage analogique dans le but de positionner avec exactitude l'aiguille des secondes par rapport aux index portés sue le cadran. Un positionnement précis de l'aiguille par rapport à l'index est encore plus souhaitable dans les montres électroniques comprenant une aiguille des heures et une aiguille des minutes seulement et où l'aiguille des minutes, entraînée par un moteur pas à pas, progresse d'une division par minute. On comprendra que dans ce cas l'oeil a tout le temps de juger si l'aiguille est bien positionnée par rapport à l'index, ce qui peut représenter une garantie quant à la bienfacture de la montre.Such a mechanism is known from the prior art and is found to be applied in certain chronographs or in certain electronic watches with analog display in order to position the second hand with precision with respect to the indexes carried on the dial. Precise positioning of the hand relative to the index finger is even more desirable in electronic watches comprising an hour hand and a minute hand only and where the minute hand, driven by a stepping motor, advances 'one division per minute. It will be understood that in this case the eye has plenty of time to judge whether the hand is correctly positioned relative to the index, which can represent a guarantee as to the good quality of the watch.

Le positionnement des aiguilles sautantes de seconde ou de minute par rapport aux index d'un cadran dépend des jeux existant dans le train d'engrenages qui se trouve entre l'axe moteur et la roue de centre qui porte l'aiguille, du rond des mobiles et de la régularité ave laquelle sont marquées les divisions du cadran. Pour ne plus dépendre des deux premiers phénomènes cités, on utilise généralement un sautoir de positionnement qui agit directement sur la denture de la roue de centre qui porte soit l'aiguille des minutes, soit l'aiguille des secondes. De cette façon, le pas angulaire de l'aiguille se trouve être rigoureusement le même que celui de la denture de la roue.The positioning of the jumping seconds or minute hands with respect to the indexes of a dial depends on the play existing in the gear train which is located between the motor axis and the center wheel which carries the needle, the circle of the mobile and regularity with which the divisions of the dial are marked. To no longer depend on the first two phenomena mentioned, a positioning jumper is generally used which acts directly on the teeth of the center wheel which carries either the minute hand or the second hand. In this way, the angular pitch of the needle is found to be strictly the same as that of the toothing of the wheel.

La figure 1 montre un mécanisme de positionnement d'une roue de centre selon l'art antérieur. Ce mécanisme comprend un sautoir 1 constitué par une lame élastique dont la première extrémité porte un polyèdre en rubis 2 qui coopère avec la denture 3 de la roue de centre 4. On peut plus simplement plier l'extrémité de la lame pour former un triangle dont les deux plans inclinés coopérant avec la denture. L'autre extrémité du sautoir 1 est fixée sur une virole 5 qui peut pivoter à friction autour d'un axe 6 lui-même solidaire d'un plot 7. dans ce plot sont pratiqués deux trous oblongs 8 et 9. Le trou 8 reçoit une groupille circulaire 10 fixée à la platine et le trou 9, une vis 11 vissée dans la platine. La roue de centre est entraînée par le pignon 12 d'une roue intermédiaire 13 qui engrène sur le pignon 14 d'un moteur pas à pas. Pour régler le sautoir de positionnement, il faut d'abord faire tourner la virole jusque'à ce que le rubis 2 entre en contact avec la roue 4 puis faire glisser le plot 7 dans l'axe du sautoir 1 de telle sorte que les plans inclinés du rubis appuyent entre les pointes des deux dents consécutives de la denture 3, l'ébat d'engrenage étant réparti par moitié de chaque côté. Une fois le réglage terminé, on serre la vis 11. Ces opérations sont délicates et les moyens mis en oeuvre sont trop grossiers pour assurer un positionnement précis. Souvent il faut répéter la manoeuvre plusieurs fois car une opération peut influencer l'autre.FIG. 1 shows a mechanism for positioning a center wheel according to the prior art. This mechanism comprises a jumper 1 constituted by an elastic blade, the first end of which carries a ruby polyhedron 2 which cooperates with the toothing 3 of the center wheel 4. It is more simply possible to bend the end of the blade to form a triangle, the two inclined planes cooperating with the teeth. The other end of the jumper 1 is fixed on a ferrule 5 which can pivot frictionally about an axis 6 itself secured to a stud 7. in this stud are made two oblong holes 8 and 9. The hole 8 receives a circular group 10 fixed to the plate and the hole 9, a screw 11 screwed into the plate. The center wheel is driven by the pinion 12 of an intermediate wheel 13 which meshes with the pinion 14 of a stepping motor. To adjust the positioning jumper, you must first rotate the ferrule until the ruby 2 comes into contact with the wheel 4 then slide the stud 7 in the axis of the jumper 1 so that the planes inclined rubies press between the tips of the two consecutive teeth of the teeth 3, the gear frame being divided by half on each side. Once the adjustment is completed, the screw 11 is tightened. These operations are delicate and the means used are too coarse to ensure precise positioning. Often it is necessary to repeat the maneuver several times because one operation can influence the other.

C'est le but de la présente invention de remédier à ces inconvénients en proposant un mécanisme de positionnement de la roue de centre qui soit d'un réglage facile, précis, tout en apportant une simplification de la construction.It is the object of the present invention to remedy these drawbacks by proposing a positioning mechanism for the center wheel which is of an easy, precise adjustment, while bringing a simplification of the construction.

Ces buts sont atteints par les moyens revendiqués.These aims are achieved by the means claimed.

Un exemple de réalisation de l'invention sera décrit maintenant à la lumière du dessin dans lequel:

  • La figure 1 est une vue en plan d'un mécanisme de positionnement de la roue de centre selon l'art antérieur tel qu'il a été expliqué ci-dessus.
An exemplary embodiment of the invention will now be described in the light of the drawing in which:
  • FIG. 1 is a plan view of a mechanism for positioning the center wheel according to the prior art as explained above.

L figure 2 est une coupe de mécanisme de positionnement de la roue de centre selon l'invention.FIG. 2 is a section of the positioning mechanism of the center wheel according to the invention.

La figure 3 est une vue en plan simplifiée du même mécanisme suivant la ligne pointillée AA portée sur la figure 2.FIG. 3 is a simplified plan view of the same mechanism along the dotted line AA shown in FIG. 2.

La figure 2 montre le rouage destiné à entraîner les aiguilles de minute et d'heure d'une pièce d'horlogerie. Solidaire du rotor aimanté 15 d'un moteur pas à pas, le pignon 14 entraîne un mobile 29 composé d'une roue 16 et d'un pignon 17. La roue de centre solidaire de l'axe 19 portant l'aiguille des minutes engrène sur le pignon 17. L'axe 20 de l'aiguille des heures est entraîné en rotation par le train d'engrenages composé du pignon 21 solidaire de la roue de centre 4 et de la minuterie formée par les engrenages 22, 23 et 24. La roue 24 est formée d'une pièce avec l'axe 20 portant l'aiguille des heures. Les axes des divers mobiles sont montés rotativement dans des paliers 25 et 26 chassés dans la platine 27 et le pont 28 de la pièce d'horlogerie.FIG. 2 shows the cog train intended to drive the minute and hour hands of a timepiece. Solid with the magnetic rotor 15 of a stepping motor, the pinion 14 drives a mobile 29 composed of a wheel 16 and a pinion 17. The center wheel integral with the axis 19 carrying the minute hand meshes on the pinion 17. The axis 20 of the hour hand is rotated by the gear train composed of the pinion 21 secured to the center wheel 4 and the timer formed by the gears 22, 23 and 24. The wheel 24 is formed in one piece with the axis 20 carrying the hour hand. The axes of the various mobiles are rotatably mounted in bearings 25 and 26 driven into the plate 27 and the bridge 28 of the timepiece.

La figure 3 est une vue en plan du même mécanisme suivant la ligne pointillée AA portée sur la figure 2. Par simplification, la figure 3 ne représente par la minuterie formée des engrenages 21, 22, 23 et 24 qui n'est pas nécessaire à la compréhension de l'invention.Figure 3 is a plan view of the same mechanism along the dotted line AA shown in Figure 2. For simplicity, Figure 3 does not show the timer formed by the gears 21, 22, 23 and 24 which is not necessary to understanding the invention.

Selon l'invention, le mobile 29 est composé d'un pignon 17 engrenant sur la roue de centre 4 et d'une roue 16 montée à friction par rapport audit pignon 17. La figure 3 montre comment est réalisée la roue 16. En plus d'une denture classique, elle est ajourée en son centre par étampage de deux parties circulaires 30 et de deux parties rectilignes 31 aboutissant à un évidement circulaire central 32. On réalise ainsi une roue à qutre rayons 33 wui relient sa périphérie à son centre. Le diamètre dudit évidement 32 est choisi légèrement plus petit que le diamètre du tigeron 18 (figure 2) du mobile 29 de telle façon que lorsque la roue est introduite sur le tigeron il y ait frottement gras de l'une part rapport à l'autre. Le couple de friction est choisi, d'une part, suffisamment grand pour qu'en fonctionnement normal de la montre la transmission du mouvement se fasse sans glissement et, d'autre part, suffisamment faible pour que lors d'un réglage manuel on puisse faire glisser angulairement la roue par rapport à son tigeron et finalement par rapport au pignon qui fait corps avec lui. La figure 2 montre encore que la partie supérieure du tigeron 18 comprend un dépassement 34 qui empêche la roue 16 de sortir de son logement. Une bonne assise à la roue 16 est assurée en pratiquant dans le pignon 17 une gorge circulaire 35. L'invention n'est pas limité à description ci-dessus qui explique une exécution préférée du mobile 29. La roue 16 peut comporter par exemple six rayons 33 répartis sur la circonférence. Elle peut aussi être non ajourée; dans ce cas, on lui superpose une rondelle élastique qui, retenue par la dépassement 34, assure la friction demandée.According to the invention, the mobile 29 is composed of a pinion 17 meshing on the center wheel 4 and a wheel 16 frictionally mounted with respect to said pinion 17. Figure 3 shows how the wheel 16 is made. In addition a classic toothing, it is perforated in its center by stamping two circular parts 30 and two rectilinear parts 31 leading to a central circular recess 32. This produces a four-spoke wheel 33 wui connect its periphery to its center. The diameter of said recess 32 is chosen slightly smaller than the diameter of the tigeron 18 (FIG. 2) of the mobile 29 so that when the wheel is inserted on the tigeron there is fatty friction on the one hand relative to the other . The friction torque is chosen, on the one hand, sufficiently large so that in normal operation of the watch the transmission of the movement takes place without slipping and, on the other hand, sufficiently low so that during manual adjustment it is possible to angularly slide the wheel in relation to its tigeron and finally in relation to the pinion which is one with it. Figure 2 also shows that the upper part of the tigeron 18 includes an overhang 34 which prevents the wheel 16 from coming out of its housing. A good seat to the wheel 16 is ensured by practicing in the pinion 17 a circular groove 35. The invention is not limited to the description above which explains a preferred embodiment of the mobile 29. The wheel 16 may comprise for example six rays 33 distributed around the circumference. It can also be openwork; in this case, an elastic washer is superimposed on it which, retained by the protrusion 34, provides the requested friction.

Comme cela a été expliqué à propos de la figure 1, les figures 2 et 3 montrent que la denture 3 de la roue de centre 4 coopère avec un sautoir 1 dont l'une des extrémités est terminée par un polyèdre en rubis 2. L'autre extrémité du sautoir est solidaire d'une virole 5 qui est montée à frottement gras sur un axe 6 fixé à la platine comme on peut le voir sur la figure 3. Par rapport à l'art antérieur, cette construction est notablement simplifiée puisqu'il n'est plus nécessaire de prévoir le plot 7, la goupille 10 et la vis 11 représentés à la figure 1.As explained in connection with FIG. 1, FIGS. 2 and 3 show that the toothing 3 of the center wheel 4 cooperates with a jumper 1, one of the ends of which is terminated by a ruby polyhedron 2. The other end of the jumper is secured to a ferrule 5 which is mounted with fatty friction on an axis 6 fixed to the plate as can be seen in FIG. 3. Compared to the prior art, this construction is considerably simplified since it is no longer necessary to provide the stud 7, the pin 10 and the screw 11 shown in FIG. 1.

On va expliquer maintenant comment on opère le positionnement de la roue de centre. On fait tourner d'abord la virole 5 sur sa goupille 6 de façon à faire entrer en contact le rubis 2 avec la denture 3 de la roue de centre 4 (figure 3). Ensuit, par une ouverture (non représentée) dans le pont 28 (figure 2), on fait tourner, au moyen d'un outil, la roue de centre 4 de telle sorte que les plans inclinés du rubis 2 appuyent entre les pointes de deux dents consécutives de la denture 3. Pendant cette seconde opération, on prendra soin de bloquer le pignon moteur 14, ce qui immobilisera la roue 16, à moins que l'ensemble pignon 14 et roue 16 constitue déjà un système de transmission à sens unique de marche comme le décrit la demande de brevet FR-A-2450982. Dans ces conditions, comme cela a été décrit plus haut, le pignon 17 glissera par rapport à la roue 16 immobilisée. Ainsi, on a positionné avec précision le roue de centre quie porte l'aiguille des minutes et, partant, ladite aiguille se trouvera toujours, lors de sa progression pas à pas, en correspondance exacte avec les divisions du cadran.We will now explain how we operate the positioning of the center wheel. First, the ferrule 5 is rotated on its pin 6 so as to bring the ruby 2 into contact with the toothing 3 of the center wheel 4 (FIG. 3). Then, through an opening (not shown) in the bridge 28 (Figure 2), the center wheel 4 is rotated by means of a tool so that the inclined planes of the ruby 2 press between the tips of two consecutive teeth of the toothing 3. During this second operation, care will be taken to block the driving pinion 14, which will immobilize the wheel 16, unless the pinion 14 and wheel 16 assembly already constitutes a one-way transmission system of works as described in patent application FR-A-2450982. Under these conditions, as described above, the pinion 17 will slide relative to the immobilized wheel 16. Thus, the center wheel which carries the minute hand has been precisely positioned and, consequently, said hand will always be, during its step-by-step progression, in exact correspondence with the divisions of the dial.

La description mentionne une roue de centre qui porte l'aiguille des minutes. L'invention peut naturellement s'appliquer aussi à une roue de centre qui porte l'aiguille des secondes.The description mentions a center wheel which carries the minute hand. The invention can naturally also be applied to a center wheel which carries the second hand.

Claims (6)

1. Positioning mechanism for a center wheel (4) in an electronic timepiece having an analog display which mechanism includes a jumper spring (1) the first extremity (2) of which is terminated by two inclined planes arranged to cooperate with the teeth (3) of said center wheel and the second extremity of which is rotatably mounted with friction on the base plate, a stepping motor being arranged to drive said center wheel through a gear train, characterized in that said gear train comprises at least one member (29) which includes a pinion (17) and a wheel (16) friction mounted relative to said pinion.
2. Positioning mechanism according to claim 1, characterized in that said pinion (17) meshes with the center wheel (4) and that the friction mounted wheel (16) meshes with a pinion (14) fixed to the motor axis.
3. Positioning mechanism according to claim 1 or claim 2, characterized in that the center wheel (4) bears the minutes hand.
4. Positioning mechanism according to claim 1 or claim 2, characterized in that the center wheel (4) bears the minute hand.
5. Positioning mechanism according to claim 1, characterized in that said wheel (16) friction mounted relative to said pinion (17) bears in its center a friction spring (33) cut out from said wheel said spring being elastically coupled to the stem (18) of said pinion (17).
6. A method of positioning a center wheel employing the mechanism according to claim 1 or claim 2, characterized by successively applying the following operations:
- supporting said two inclined planes (2) on the teeth (3) of the center wheel (4) while turning said second extremity of the jumper spring (5);
- immobilising the pinion (14) fixed to the motor axis;
- angularly displacing the center wheel by effecting slipping of the pinion (17) which meshes therewith relative to the said friction mounted wheel (16) until said two inclined planes (2) of the jumper spring are supported between the points of two consecutive teeth of said center wheel.
EP80106960A 1979-11-16 1980-11-12 Mechanism for positioning a centre wheel Expired EP0029204B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7928761 1979-11-16
FR7928761A FR2469743A1 (en) 1979-11-16 1979-11-16 POSITIONING MECHANISM OF A CENTER WHEEL FOR A WATCHMAKING PART

Publications (2)

Publication Number Publication Date
EP0029204A1 EP0029204A1 (en) 1981-05-27
EP0029204B1 true EP0029204B1 (en) 1983-06-29

Family

ID=9231962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106960A Expired EP0029204B1 (en) 1979-11-16 1980-11-12 Mechanism for positioning a centre wheel

Country Status (5)

Country Link
US (1) US4408898A (en)
EP (1) EP0029204B1 (en)
JP (1) JPS56124077A (en)
DE (1) DE3063990D1 (en)
FR (1) FR2469743A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4974989A (en) * 1983-08-22 1990-12-04 Larry Salter Method for reducing installation forces and costs in a tapered bolt installation
JP2579209B2 (en) * 1989-01-09 1997-02-05 ナイルス部品株式会社 Switch pole plate and its manufacturing apparatus
DE102007042797B4 (en) * 2007-09-07 2010-04-08 Lange Uhren Gmbh Clock
CH700752B1 (en) * 2009-04-15 2014-03-14 Patek Philippe Sa Geneve chronograph mechanism and timepiece provided with such a mechanism.
JP2011053019A (en) * 2009-08-31 2011-03-17 Seiko Instruments Inc Slip gear structure and timepiece with the same
EP2560057B1 (en) * 2011-08-17 2014-04-02 ETA SA Manufacture Horlogère Suisse Timepiece movement with reduced height and large power reserve
US9678477B2 (en) * 2014-09-12 2017-06-13 Seiko Instruments Inc. Mechanical component, mechanical component manufacturing method, movement, and timepiece
EP3825779A1 (en) * 2019-11-21 2021-05-26 ETA SA Manufacture Horlogère Suisse Timepiece mobile component with element supported by friction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312742A (en) * 1953-10-08 1956-02-29 Ebauches Sa Timepiece with instantaneous seconds mechanism
DE1698624B1 (en) * 1964-01-21 1969-09-04 United States Time Corp Pointer mechanism for electric clocks
US3487633A (en) * 1968-01-23 1970-01-06 Us Time Corp The Dial train friction device
DE1932285A1 (en) * 1969-06-26 1971-01-07 Kieninger & Obergfell Radial friction for fine mechanical gear assemblies, especially clockworks
JPS4917670Y1 (en) * 1969-09-25 1974-05-08
GB1343223A (en) * 1971-02-17 1974-01-10 Suwa Seikosha Kk Detent apparatus eg for use in an electronic timepiece
JPS5263461U (en) * 1975-11-04 1977-05-11

Also Published As

Publication number Publication date
EP0029204A1 (en) 1981-05-27
FR2469743A1 (en) 1981-05-22
JPS56124077A (en) 1981-09-29
JPS6133473B2 (en) 1986-08-02
DE3063990D1 (en) 1983-08-04
FR2469743B1 (en) 1982-09-17
US4408898A (en) 1983-10-11

Similar Documents

Publication Publication Date Title
EP2115537B1 (en) Timepiece comprising a mechanism for driving a device displaying a time-related value
EP0360140B1 (en) Skeleton watch showing the whole mechanism or a part of the same
EP1470452A2 (en) Device comprising a movement for a timepiece and a chronograhic module
CH684618B5 (en) Timepiece for simultaneous display of the time for at least two time zones.
EP0173230B1 (en) World clock
EP0029204B1 (en) Mechanism for positioning a centre wheel
FR2784203A1 (en) Time-piece mechanism includes a tourbillon for compensation of the gravity on the balance wheel oscillation
EP0363821B1 (en) Calendar watch with a central date display
CH691200A5 (en) Device for setting the time for a timepiece.
EP3316048A1 (en) Clockwork mechanism for displaying and correcting a plurality of information
EP3501842B1 (en) Display device with rollers
EP3485333B1 (en) Mechanism for selecting and actuating functions of a timepiece movement
CH689359A5 (en) Equation of time mechanism with display
EP3246763B1 (en) Quick correction mechanism for clock piece
EP2477080B1 (en) Timepiece showing the time zone corresponding to a selected time
CH712477A2 (en) Rapid correction device for an indication provided by a display mechanism for a timepiece.
EP3857313A2 (en) Display mechanism with a single aperture
CH698613B1 (en) Timepiece e.g. watch, has time marking equation mechanism including action unit that connects civil time minute wheel to real time minute wheel for suppressing clearance between civil time minute hand and real time minute real hand
EP1396765B1 (en) Time zone timepiece comprising an alarm mechanism
EP0884659B1 (en) Simplified time setting device for a timepiece
EP0509403A1 (en) Clockwork movement
EP0884658B1 (en) Clutch mechanism in a gear transmission of a timepiece
CH693291A5 (en) Universal watch comprises first hour indicator and minute indicator operated by movement and comprising first tube wheel, second hour indicator fitted on second tube of second tube wheel
EP4080292A1 (en) Timepiece mechanism for displaying at least a single indication of the time and timepiece comprising such a mechanism
EP3629100A1 (en) Symmetrical device for guiding two elements, especially for timepieces

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE GB

17P Request for examination filed

Effective date: 19811028

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE GB LI

REF Corresponds to:

Ref document number: 3063990

Country of ref document: DE

Date of ref document: 19830804

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19841124

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19841129

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19851130

Ref country code: CH

Effective date: 19851130

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19860801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118