EP0360963B1 - Montre - Google Patents

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Publication number
EP0360963B1
EP0360963B1 EP89106220A EP89106220A EP0360963B1 EP 0360963 B1 EP0360963 B1 EP 0360963B1 EP 89106220 A EP89106220 A EP 89106220A EP 89106220 A EP89106220 A EP 89106220A EP 0360963 B1 EP0360963 B1 EP 0360963B1
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EP
European Patent Office
Prior art keywords
wheel
world time
hour
watch according
hour wheel
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 - Lifetime
Application number
EP89106220A
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German (de)
English (en)
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EP0360963A1 (fr
Inventor
Klaus Kurt
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.)
IWC International Watch Co AG
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IWC International Watch Co AG
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Publication date
Application filed by IWC International Watch Co AG filed Critical IWC International Watch Co AG
Publication of EP0360963A1 publication Critical patent/EP0360963A1/fr
Application granted granted Critical
Publication of EP0360963B1 publication Critical patent/EP0360963B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B19/00—Indicating the time by visual means
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands
    • G04B19/235—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands mechanisms for correcting the additional hand or hands

Definitions

  • the invention relates to a watch with an hour wheel rotatable by a drive about an axis of rotation and a coaxially arranged rotatable world time hour wheel, with an adjusting element by which the world time hour wheel is gradually rotatable relative to the hour wheel, the adjusting element for Adjustment of the world time hour wheel can be coupled and uncoupled after the adjustment, with an hour hand connected to the hour wheel and a world time hour hand connected to the world time hour wheel, by means of which the times of two different time zones can be displayed on a fixed dial, whereby Adjustment element is a time zone ring, which is arranged concentrically to the axis of rotation and can be rotated in stages, by means of which a transmission element can be driven for adjusting the world time hour wheel.
  • the hour hand indicates the time that is valid in the time zone in which the wearer of the clock normally lives.
  • the world time hour hand is used to display the time in another of the 24 time zones in the world.
  • Such a watch is known from CH-B-563 608.
  • Such a world time clock in which, however, the gear trains of the hour wheel, world time hour wheel and adjusting element are permanently in engagement with one another, is known from US Pat. No. 3,633,354.
  • a world time clock is known from EP-A-0 173 230, in which the hour wheel and the world time hour wheel are connected to one another by a resilient latching connection, the spring force of which can be overcome by turning the time zone ring.
  • the time zone ring has a ring gear with which a transmission element is engaged, the teeth of which, when the time zone ring is rotated from one latching position to the next latching position, can be brought into engagement with the teeth of a world time gear wheel that is firmly connected to the world time hour wheel and the world time hour wheel adjusted from its current position by one step relative to the hour wheel.
  • a world time clock is known from US-A-23 05 508, in which the hour wheel and the world time hour wheel are connected to one another by a resilient latching connection.
  • a world time clock can be derived from US-A-37 85 141, in which the transmission switching star, the teeth of which can be brought into engagement with the teeth of a world time gearwheel when the time zone ring is rotated from one rest position to the next rest position, and the world time hour wheel is adjustable from its current position by one step relative to the hour wheel.
  • the object of the invention is to provide a watch according to the preamble, which has a simple mechanism with a few components for adjusting the world hour hand.
  • the hour wheel and world time hour wheel are connected by a resilient latching connection
  • the spring force can be overcome by turning the time zone ring and that the time zone ring has a ring gear with which a transmission starwheel is engaged, the teeth of which rotate when the time zone ring is rotated from a rest position to the next rest position can be brought into engagement with the teeth of a world time gear firmly connected to the world time hour wheel and the world time hour wheel can be adjusted from its current position by one step relative to the hour wheel.
  • the circumference of the time zone ring preferably has 24 latching positions corresponding to the time zones, and the world time hour wheel is gradually adjustable by an angle corresponding to an hour, the world time hour wheel being adjustable by an angle of 30 degrees per adjustment stage.
  • time zone ring For simple driving of the time zone ring, it can be rotatably adjustable by a time zone adjusting drive which engages in the toothed ring of the time zone ring and which can be manually rotated by means of a crown.
  • the time zone ring can carry a time zone indicator ring which, distributed over its circumference, carries time zone markings which are assigned to the latching positions and which can be made to overlap with a stationary identification mark.
  • the time zone ring is not only used to adjust but also to display the set time zone.
  • the ring gear of the time zone ring is preferably an internal ring gear.
  • the shortest adjustment path can always be used to set the desired time zone.
  • a tooth gap of the transmission starwheel can prevent the transmission starwheel from touching the world time gearwheel of the world time hour wheel when the time zone ring is in a rest position face the gear of the world time hour wheel.
  • the latching connection between the world time hour wheel and the hour wheel has a catch arranged on the hour wheel, which is spring-loaded so that it can move radially in a uniformly distributed manner in the latching depressions formed on the circumference of the world time hour wheel.
  • the catch can be designed to move in a central rest position in the locking recess. This is achieved in a simple manner in that the catch is formed on its area projecting into the catch recess as a catch tooth with ramp-like flanks which extend symmetrically in both directions of rotation.
  • the locking recesses can be tooth gaps of the world time hour wheel designed as a gearwheel with preferably twelve teeth.
  • the ramp-like flanks slide gently along the flanks of the tooth gap until the locking tooth is in contact with both flanks on the flanks of the tooth gap.
  • a small size is achieved in that the world time hour wheel and the world time gear connected to it are arranged coaxially parallel next to each other.
  • the smallest possible guide angle, in which the transmission switching star is in engagement with the world time gearwheel, is of such a size that the tooth tip of the locking tooth can be moved from the area of a tooth gap into the area immediately adjacent to it, of an adjacent tooth gap of the world time hour wheel, and in that
  • the largest possible lead angle at which the transmission switching star meshes with the world time gear is of such a size that the tooth tip of the locking tooth can be moved as the area of a tooth gap into the most distant area of an adjacent tooth gap of the world time hour wheel Regardless of the current position of the teeth of the world time gear, the world time hour wheel is always correctly shifted by one stop position.
  • the world time gear preferably has twenty-four teeth.
  • the world time hour hand can be rotatably driven at two revolutions per twenty-four hours.
  • a 24-hour display arranged concentrically to the axis of rotation can be rotatably driven has a ring scale bearing twenty-four hour markings, to which a fixed mark is assigned, the time can be read from the ring scale in 24-hour division of the day.
  • the stationary marking can be the identification marking.
  • the ring scale can have an increasing value in the direction of rotation of the world time hour hand and can be driven to rotate against the direction of rotation of the world time hour hand at half the speed of rotation of the world time hour hand.
  • the 24-hour display can be permanently connected to a 24-hour display wheel which can be rotated about the axis of rotation and is designed as a gearwheel and can be driven by the world-time gearwheel via a reduction gear, the drive train moving from the world-time gearwheel to the 24th -Hours indicator wheel is inseparable. This means that no additional drive is required for the 24-hour display.
  • the world time hour wheel In order to enable an adjustment of the world time hour hand in relation to the hour hand without the time zone ring also being adjusted, the world time hour wheel, with the setting element uncoupled, can be overcome by a correction adjusting device, overcoming the spring force of the latching connection, and rotated in steps relative to the hour wheel.
  • a correction adjusting device overcoming the spring force of the latching connection, and rotated in steps relative to the hour wheel.
  • This allows each time zone of the watch to be set as the time zone in which the watch wearer normally lives. Impairment of the normal drive of the watch is avoided by the fact that the correction device for correcting the world time hour wheel with it can be coupled and uncoupled after the correction adjustment.
  • An adjustment of the world time hour wheel is possible in that a gear wheel of the drive train from the world time gear wheel to the 24-hour display wheel can be rotatably driven by the correction adjusting device, wherein the gear wheel can be an intermediate wheel of the reduction gear.
  • the correction actuator has a manually longitudinally displaceable pusher, by means of which, against a spring force, a switching pin engages from a disengaged rest position in the gearwheel of the drive train and can be rotated such that the world time hour wheel is relatively rotatable by an adjustment step relative to the hour wheel.
  • the smallest possible guide angle at which the switching pin is in engagement with the gear is of such a size that the tooth tip of the gear can be moved from the area of a tooth gap into the area of an adjacent tooth gap of the world time hour wheel that is adjacent thereto and that the largest possible Guide angle, in which the switching pin is in engagement with the gear, has such a size that the tooth tip of the locking tooth can be moved from the area of a tooth gap into the most distant area of an adjacent tooth gap of the world time hour wheel, regardless of the current position of the teeth of the world time gear always a perfect advancement of the world time hour hand by a rest position.
  • the switching pin is arranged on a pivot lever which can be pivoted by the pusher about a correction pivot axis.
  • the swivel lever can be moved back to the disengaged rest position after a correction adjustment such that the switching pin moves in a movement path outside the gearwheel. This is achieved in a simple manner in that, after a correction adjustment by spring force, the pivot lever can be displaced into a reset position and pivoted about a reset pivot axis into the non-engaged rest position, the distance from which to the switching pin is less than the distance between the correction axis and switching pin.
  • the dial shown in FIG. 1 has a fixed, ring-shaped inner hour scale 1 with twelve hour markers, which are swept by an hour hand 2 and a world time hour hand 3.
  • the hour scale 1 is enclosed by a likewise fixed minute scale 4, which is swept by both a minute hand 5 and a second hand 6.
  • the minute scale 4 is surrounded by a rotatable ring scale 7 of a 24-hour display with twenty-four hour markings.
  • the ring scale 7 is enclosed by a rotatable time zone ring 8, which is provided with evenly distributed twenty-four city names, which are symbols of the twenty-four different time zones.
  • time zone ring 8 Radially outside of the time zone ring 8 there is a fixed identification mark 9 which is designed as an arrow and which is assigned to both the time zone ring 8 and the ring scale 7. All scales and rings are arranged concentrically to an axis of rotation 10, about which the pointers are also rotatable.
  • Figure 2 shows an internal ring gear 11 which is fixed to the time zone ring 8. Twenty-four markings are arranged on the inner ring gear 11 corresponding to the city names of the time zone ring 8.
  • a world time hour wheel 13 can be rotatably driven from the internal ring gear 11 via a transmission switching star 12.
  • a 24-hour display (not shown) with the ring scale 7 can be rotatably driven by the world time hour wheel 13 via a drive train which has a reduction gear 14.
  • a correction control device 15 engages in the drive train a pusher 16 can be actuated.
  • an hour wheel 17 and the world time hour wheel 13 are rotatably mounted about the axis of rotation 10.
  • the hour wheel 17 has an hour tube 18 on which the world time hour wheel 13 and a world time hour tube 19 are rotatably mounted.
  • the hour hand 2 can be fastened to the hour tube 18 and the world time hour hand 3 can be fastened to the world time hour tube 19.
  • the minute and second tubes which carry the minute hand 5 and the second hand 6 coaxially through the hour tube 18 are not shown.
  • a world time gear wheel 20 Arranged parallel to the world time hour wheel 13, which is designed with twelve teeth, is a world time gear wheel 20, which has twenty four teeth and is firmly connected to the world time hour tube 19. An intermediate disk 21 is arranged between the world time hour wheel 13 and the world time gear wheel 20.
  • an hour wheel disk 22 Arranged axially next to the world time hour wheel 13 is an hour wheel disk 22 which is fixedly connected to the hour tube 18 and which carries a locking tooth 24 which can be pivoted about an axis 23.
  • the ratchet tooth 24 has ramp-like flanks 25 extending symmetrically in both directions of rotation, with which it can be moved radially into the tooth gaps 27 of the world time hour wheel 13 designed as a gearwheel with twelve teeth.
  • the ratchet tooth 24 is biased at the hour wheel disc 22 is provided with a spring arm 26 which spring-loads the locking tooth 24 into the tooth space 27.
  • the flanks 25 of the locking tooth 24 slide along the flanks of the tooth gap 27 until the locking tooth 24 projects centrally into the tooth gap 27 on both tooth flanks.
  • the world time hour wheel 13 can be rotated relative to the hour wheel 17.
  • the ratchet tooth 24 is pulled out of its tooth gap 27 and snaps back into the adjacent tooth gap.
  • the world time hour hand 3 is adjusted by one hour step compared to the hour hand 2.
  • the identification mark 9 then points to the city name, the time zone of which now corresponds to the time indicated by the world time hour hand 3.
  • FIG. 6 shows, the movement play of the transmission switching star 12 relative to the internal ring gear 11 when the latching element 30 is engaged is such that no contact with the world time gear 20 by the transmission switching star 12 is possible.
  • a tooth of the transmission switching star 12 engages with the world time gear 20 and rotates it and thus also the world time hour wheel 13 to such an extent that the locking tooth 24 is lifted out of its tooth gap 27 and reaches the area of the adjacent tooth gap into which it snaps into place.
  • the teeth of the world time gear 20 can be in different positions from the teeth of the transmission switching star 12. Depending on this position, the transmission switching star 12 therefore engages in the world time gear 20 between the largest possible guide angle (FIG. 7) and the smallest possible guide angle (FIG. 8).
  • the world time gear 20 is rotated so far that the ratchet tooth 24 moves out of its current tooth gap 27 until its tooth tip is located in the area of the tooth gap of the world time hour wheel 13 that is furthest away from this tooth gap 27.
  • Tooth gap 27 is the immediately adjacent area of the adjacent tooth gap of the world time hour wheel 13.
  • the locking tooth 24 Since the locking tooth 24 is acted upon by spring force in the new tooth gap, it looks for disengagement of the transmission switching star 12 and world time gear 20 by sliding its flanks 25 on the flanks of the new tooth gap, the middle position in this tooth gap, so that the hour wheel 17 is correctly assigned again and world time hour wheel 13 is present.
  • the world time hour wheel 13 is thus rotated exactly one hour with respect to the hour wheel 17. Depending on the direction of rotation of the time zone actuator 28, this adjustment has been made forwards or backwards.
  • an intermediate gear 32 of the reduction gear 14 also engages in the world time gear 20, which has twenty-four teeth, via which a 24-hour indicator wheel 34 designed with 80 teeth is rotated.
  • the reduction gear 14 is such that the 24-hour indicator wheel 34 is driven counterclockwise by the world time gear 20 at one revolution per twenty-four hours.
  • a decoupling of the drive train from the world time gear 20 to the 24-hour display wheel 33 is not possible, so that the 24-hour display wheel 34 is permanently driven by the drive of the clock.
  • the ring scale 7 With the 24-hour display wheel 34, the ring scale 7 is firmly connected, which is provided with twenty-four hour markings.
  • the identification mark 9 always points to the hour mark on the ring scale 7, which corresponds to the time indicated by the world time hour hand 3 on the hour scale 1. Since the ring scale 7 but bearing twenty-four hour markings, it can be determined here immediately whether the time is before noon or after noon.
  • FIGS. 10 to 14 there is a correction adjusting device 15 which can be brought into engagement with the intermediate wheel 32 of the reduction gear 14 and through which the world time hour wheel 13, overcoming the latching connection, can be rotated relative to the hour wheel 17. This is necessary to calibrate the watch to a specific time zone, which should be the time zone in which the wearer of the watch normally lives.
  • the world time hour hand 3 is brought into overlap with the hour hand 2 by means of the correction device 15, the time zone ring 8 having to be in the position that the identification mark 9 indicates the time zone in which the wearer of the watch normally lives.
  • the watch can be set to any other time zone by means of the time zone actuator 28, the time of which is then indicated by the world time hour hand 3 and the hour hand 2 shows the time in the time zone in which the wearer of the watch normally lives.
  • the correction device 15 has the pusher 16 which can be manually displaced radially to the axis of rotation 10 and which, against the force of a spring 35, can be pivoted against a pivot lever 33 in the adjustment position (FIG. 10).
  • the pivot lever 33 can be pivoted during a movement from a disengaged rest position into the adjustment position about a correction pivot axis, which is formed by a fixed axle bolt 36 which extends through an elongated hole 38 of the pivot lever 33.
  • the spring 35 first displaces the pivot lever 33 in such a way that the axle pin 36 assumes a different position in the elongated hole 38 and now forms a return pivot axis, the distance from which to the switching pin 37 is less than the distance from the correction axis to the switching pin 37.
  • the swivel lever 33 is additionally acted upon by a guide spring 39 in the disengaged direction of the switching pin 37 from the intermediate wheel 32.
  • the guide spring 39 designed as a leaf spring rests against a stop pin 40 of the pivot lever 33, which slides along the guide spring 39 during the return movement.
  • the switching pin 37 moves from the maximum deflection into the non-engaged rest position on a movement path outside the idler gear 32.
  • the pivot lever 33 Shortly before reaching the disengaged rest position, the pivot lever 33 is also in again by the spring 35 moved the position in which the axle pin 36 again forms the corrective pivot axis.
  • the idler gear 32 rotates continuously, the position of its teeth relative to the shift pin 37 is different. As a result, the intermediate wheel 32 is adjusted by the shift pin 37 between a smallest possible guide angle and a greatest possible guide angle in which the shift pin 37 is in engagement with the intermediate wheel 32.
  • the largest possible guide angle (FIG. 13) is of such a size that the tooth tip of the locking tooth 24 can be moved from the area of a tooth gap 27 into the area of an adjacent tooth gap of the world time hour wheel 13 that is most distant from this tooth space 27.
  • the smallest possible guide angle (FIG. 14) is of such a size that the tooth tip of the locking tooth 24 can be moved from the area of a tooth space 27 into the area of an adjacent tooth space of the world time hour wheel 13 that is adjacent to this tooth space. Subsequent alignment of the world time hour wheel 13 with respect to the hour wheel 17 takes place in the manner already described by the detent tooth 24.

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

Claims (31)

  1. Appareil d'horlogerie comprenant une roue des heures (17) pouvant être entraînée en rotation par un organe moteur autour d'un axe de rotation et une roue des heures de temps universel (13) disposée rotative coaxialement à elle, un élément de réglage par lequel la roue des heures de temps universel (13) est réglable en rotation, par paliers, par rapport à la roue des heures (17), l'élément de réglage étant accouplable à la roue des heures de temps universel (13) en vue du réglage de celle-ci et étant désaccouplable de cette roue après le réglage, une aiguille des heures reliée à la roue des heures (17) et une aiguille des heures de temps universel reliée à la roue des heures de temps universel (13), par lesquelles peuvent être indiquées les heures de deux fuseaux horaires différents sur un cadran fixe, l'élément de réglage étant un anneau à fuseaux horaires (8) disposé concentriquement à l'axe de rotation (10) et réglable en rotation par paliers, par lequel peut être entraîné un élément de transmission pour le réglage de la roue des heures de temps universel (13), caractérisé en ce que la roue des heures (17) et la roue des heures de temps universel (13) sont reliées entre elles par une liaison élastique à encliquetage dont la force élastique peut être surmontée par la rotation de l'anneau à fuseaux horaires (8) et que l'anneau à fuseaux horaires (8) présente une couronne dentée avec laquelle est en prise une étoile d'avance de transmission (12), dont les dents peuvent être amenées en prise, lors de la rotation de l'anneau à fuseaux horaires (8), d'une position d'encliquetage à la position d'encliquetage suivante, avec les dents d'une roue dentée de temps universel (20) reliée fixe à la roue des heures de temps universel (13), et par lesquelles la roue des heures de temps universel (13) est déplaçable d'un palier, à partir de sa position momentanée, par rapport à la roue des heures (17).
  2. Appareil d'horlogerie selon la revendication 1, caractérisé en ce que l'anneau à fuseaux horaires (8) présente vingt-quatre positions d'encliquetage uniformément réparties à sa périphérie et correspondant aux fuseaux horaires et la roue des heures de temps universel (13) est réglable par paliers ou pas à pas d'un angle correspondant à une heure.
  3. Appareil d'horlogerie selon la revendication 2, caractérisé en ce que la roue des heures de temps universel (13) est réglable d'un angle de 30 degrés par palier ou pas de réglage.
  4. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que l'anneau à fuseaux horaires (8) est régable en rotation par une commande de réglage de fuseau horaire (28) agissant sur la couronne dentée de l'anneau à fuseaux horaires (8) et qui peut être entraînée en rotation manuellement au moyen d'une couronne.
  5. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce qu'un élément d'encliquetage (30), disposé stationnaire, est chargé élastiquement dans le sens de son engagement radial dans les entredents (29) de la couronne dentée de l'anneau à fuseaux horaires (8) et de son appui contre les flancs, dirigés l'un vers l'autre, de deux dents voisines.
  6. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que l'anneau à fuseaux horaires (8) supporte un anneau indicateur de fuseaux horaires, qui porte des marquages de fuseaux horaires répartis sur sa périphérie et coordonnés aux positions d'encliquetage, que l'on peut faire coïncider avec un marquage d'identification ou index (9) disposé fixe.
  7. Appareil d'horlogerie selon la revendication 1, caractérisé en ce que la couronne dentée de l'anneau à fuseaux horaires (8) est une couronne à denture intérieure (11).
  8. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que l'anneau à fuseaux horaires (8) peut être entraîné en rotation dans l'un ou l'autre sens autour de l'axe de rotation (10).
  9. Appareil d'horlogerie selon la revendication 1, caractérisé en ce que, lorsque l'anneau à fuseaux horaires (8) occupe une position d'encliquetage, un entredent de l'étoile d'avance de transmission (12) est dirigé vers la roue dentée de la roue des heures de temps universel (13) de manière à empêcher le contact de l'étoile d'avance de transmission (12) avec la roue dentée de temps universel (20) solidaire de la roue des heures de temps universel (13).
  10. Appareil d'horlogerie selon une des revendcations précédentes, caractérisé en ce que la liaison à encliquetage entre la roue des heures de temps universel (13) et la roue des heures (17) présente un arrêtoir disposé sur la roue des heures (17) et qui est chargé élastiquement dans le sens de son engagement radial dans des crans uniformément répartis à la périphérie de la roue des heures de temps universel (13).
  11. Appareil d'horlogerie selon la revendication 10, caractérisé en ce que l'arrêtoir est réalisé pour s'engager dans un cran en y prenant une position de repos centrée.
  12. Appareil d'horlogerie selon la revendication 11, caractérisé en ce que l'arrêtoir est réalisé, sur sa partie pénétrant dans les crans, comme une dent d'arrêt (24) possédant des flancs (25), semblables à des rampes, qui s'étendent symétriquement dans les deux sens de rotation.
  13. Appareil d'horlogerie selon la revendication 10, caractérisé en ce que les crans sont des entredents (27) de la roue des heures de temps universel (13), réalisée comme une roue dentée.
  14. Appareil d'horlogerie selon la revendication 13, caractérisé en ce que la roue des heures de temps universel (13) possède douze dents.
  15. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que la roue des heures de temps universel (13) et la roue dentée de temps universel (20), reliée fixe à elle, sont disposées sur le même axe parallèlement l'une à côté de l'autre.
  16. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que l'angle de guidage minimal sur lequel l'étoile d'avance de transmission (12) est en prise avec la roue dentée de temps universel (20), possède une grandeur telle que le sommet de la dent d'arrêt (24) est déplaçable de la zone d'un entredent (27) dans la zone, qui lui est directement adjacente, d'un entredent voisin de la roue des heures de temps universel (13), et que l'angle de guidage maximal sur lequel l'étoile d'avance de transmission (12) est en prise avec la roue dentée de temps universel (20), possède une grandeur telle que le sommet de la dent d'arrêt (24) est déplaçable de la zone d'un entredent (27) dans la zone qui en est la plus éloignée d'un entredent voisin de la roue des heures de temps universel (13).
  17. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que la roue dentée de temps universel (20) possède vingt-quatre dents.
  18. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que l'aiguille des heures de temps universel (3) est entraînée en rotation pour effectuer deux tours par 24 heures.
  19. Appareil d'horlogerie selon la revendication 18, caractérisé en ce que la roue des heures de temps universel (13) entraîne en rotation un affichage sur 24 heures, disposé concentriquement à l'axe de rotation (10), qui présente une échelle annulaire (7) portant vingt-quatre marquages d'heures et à laquelle est coordonné un marquage fixe.
  20. Appareil d'horlogerie selon les revendications 6 et 19, caractérisé en ce que le marquage fixe est le marquage d'identification ou index (9).
  21. Appareil d'horlogerie selon la revendication 19, caractérisé en ce que la valeur des marquages de l'échelle annulaire (7) augmente dans le sens de rotation de l'aiguille des heures de temps universel (3) et cette échelle est entraînée en rotation à la moitié de la vitesse de rotation de l'aiguille des heures de temps universel (3) et en sens contraire au sens de rotation de cette aiguille.
  22. Appareil d'horlogerie selon la revendication 19, caractérisé en ce que l'affichage sur 24 heures est relié fixe à une roue d'affichage sur 24 heures (34), réalisée comme une roue dentée rotative autour de l'axe de rotation (10), qui est entraînée par la roue dentée de temps universel (20) par l'intermédiaire d'un rouage de démultiplication (14), l'agencement étant tel que la chaîne cinématique allant de la roue dentée de temps universel (20) à la roue d'affichage sur 24 heures (34) ne peut pas être rompue.
  23. Appareil d'horlogerie selon une des revendications précédentes, caractérisé en ce que la roue des heures de temps universel (13) est déplaçable en rotation, par paliers, par rapport à la roue des heures (17), alors que l'élément de réglage est désaccouplé, au moyen d'un dispositif de réglage de correction qui surmonte la force élastique de la liaison à encliquetage.
  24. Appareil d'horlogerie selon la revendication 23, caractérisé en ce que le dispositif de réglage de correction (15) est accouplable avec la roue des heures de temps universel (13) en vue du réglage de correction et est désaccouplable de cette roue après le réglage de correction.
  25. Appareil d'horlogerie selon les revendications 22 à 24, caractérisé en ce que le dispositif de réglage de correction (13) permet d'entraîner en rotation une roue dentée de la chaîne cinématique allant de la roue dentée de temps universel (20) à la roue d'affichage sur 24 heures (34).
  26. Appareil d'horlogerie selon la revendication 25, caractérisé en ce que la roue dentée est une roue intermédiaire (32) du rouage de démultiplication (14).
  27. Appareil d'horlogerie selon une des revendications 23 à 26, caractérisé en ce que le dispositif de réglage de correction (15) comporte un poussoir (16) manuellement déplaçable longitudinalement, par lequel une cheville d'avance (37) est déplaçable, à l'encontre d'une force élastique, depuis une position de repos désaccouplée pour s'engager dans la roue dentée de la chaîne cinématique et pour faire tourner cette roue de manière que la roue des heures de temps universel (13) puisse être tournée d'un palier de réglage par rapport à la roue des heures (17).
  28. Appareil d'horlogerie selon la revendication 20, caractérisé en ce que l'angle de guidage minimal sur lequel la cheville d'avance (17) est en prise avec la roue dentée, possède une grandeur telle que le sommet de la dent d'arrêt (24) est déplaçable depuis la zone d'un entredent (27) dans la zone qui lui est directement adjacente d'un entredent voisin de la roue des heures de temps universel (13), et que l'angle de guidage maximal sur lequel la cheville d'avance (37) est en prise avec la roue dentée possède une grandeur telle que le sommet de la dent d'arrêt (24) est déplaçable depuis la zone d'un entredent (27) dans la zone qui en est la plus éloignée d'un entredent voisin de la roue des heures de temps universel (13).
  29. Appareil d'horlogerie selon la revendication 28, caractérisé en ce que la cheville d'avance (17) est disposée sur un levier pivotant (33), que le poussoir (16) permet de faire pivoter autour d'un axe de pivotement pour la correction.
  30. Appareil d'horlogerie selon la revendication 29, caractérisé en ce que, à la suite d'un réglage de correction, le levier pivotant (33) est rappelé à la position de repos désaccouplée en étant guidé de manière que la cheville d'avance (37) se déplace suivant une trajectoire extérieure à la roue dentée.
  31. Appareil d'horlogerie selon la revendication 30, caractérisé en ce que, à la suite d'un réglage de correction, une force élastique déplace le levier pivotant (33) par translation à une position de rappel et fait pivoter ce levier à la position de repos désaccouplée autour d'un axe de pivotement de rappel, dont la distance par rapport à la cheville d'avance est inférieure à la distance entre l'axe de pivotement pour la correction et la cheville d'avance (37).
EP89106220A 1988-09-24 1989-04-08 Montre Expired - Lifetime EP0360963B1 (fr)

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Application Number Priority Date Filing Date Title
DE3832514 1988-09-24
DE3832514A DE3832514C1 (fr) 1988-09-24 1988-09-24

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EP0360963A1 EP0360963A1 (fr) 1990-04-04
EP0360963B1 true EP0360963B1 (fr) 1992-11-25

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DE (2) DE3832514C1 (fr)

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Also Published As

Publication number Publication date
US4945521A (en) 1990-07-31
JPH02116782A (ja) 1990-05-01
JPH0658407B2 (ja) 1994-08-03
EP0360963A1 (fr) 1990-04-04
DE58902818D1 (de) 1993-01-07
DE3832514C1 (fr) 1989-11-02

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