EP0759584B1 - Synchronisationsvorrichtung für eine elektronische Uhr - Google Patents

Synchronisationsvorrichtung für eine elektronische Uhr Download PDF

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Publication number
EP0759584B1
EP0759584B1 EP96113121A EP96113121A EP0759584B1 EP 0759584 B1 EP0759584 B1 EP 0759584B1 EP 96113121 A EP96113121 A EP 96113121A EP 96113121 A EP96113121 A EP 96113121A EP 0759584 B1 EP0759584 B1 EP 0759584B1
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EP
European Patent Office
Prior art keywords
contact
angle
wheel
arms
areas
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
EP96113121A
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English (en)
French (fr)
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EP0759584A1 (de
Inventor
Doris Eckstein
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.)
ETA SA Manufacture Horlogere Suisse
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA AG
Eta SA Fabriques dEbauches
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Publication of EP0759584A1 publication Critical patent/EP0759584A1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
    • H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/001—Electromechanical switches for setting or display
    • G04C3/005—Multiple switches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08

Definitions

  • the present invention relates to a device for synchronization for an electronic timepiece including an analog display to display some time information and an electronic counter for memorize some of said time information, this synchronization device being intended to synchronize display with the counter. More specificly, the invention relates to such a device for a room watchmaking with digital and analog displays combined, the synchronization device being intended for synchronize these displays when changing time zones.
  • patent application FR-A-2 484 101 relates to a timepiece comprising a device synchronizer which includes a bearing wheel the minute or second hand on which rub two conductive strips. Means of contact electric are provided on one side of the wheel to raise and thus periodically short-circuit the two strips, see also PAJ, vol. 4, no. 131 [P-27], & JP-A-55082081.
  • Patent CH-B-653,846 also describes a device synchronization for a timepiece, allowing to synchronize, in the event of a change of date, a analog display with contained electronic meter in the timepiece.
  • the synchronization includes a first form cam ring which is around the barrel of the wheel of hours.
  • a conductive strip, mounted on the part planar annular of the cam, has an inclined point which extends to a conductive track connected to the electronic device for the timepiece.
  • Three spacers are planted in the cam board and are distributed circularly in positions at 120 °.
  • the conductive strip is thus driving to the conductive track.
  • Such an arrangement has also as a problem that because of the displacement of the first cam with conductive strip, rebounds mechanical occur when the second bearing cam the notches rotate rapidly leading to loss without possibility of compensation or correction.
  • this system is hardly adaptable to detect time zone changes hours.
  • the object of the present invention is to remedy these disadvantages of the prior art by a new solution and inventive which is set out in the claims.
  • the synchronization device proposed by the invention consists of a "pseudo-absolute" coordinate system, that is, knowing the position of start, the position of the needle indicating the information schedule can be found with great precision at because of a glut of information.
  • the hour wheel drives a wheel of contact on which a contact spring is fixed several arms. Arms make contact with tracks conductors distributed according to a particular arrangement on the printed circuit associated with the synchronization and to an electronic device of developing control signals. By geometry arms, the tracks are linked periodically in different configurations, for example every twenty minutes. The series of combinations forming the different possible configurations is repeated periodically.
  • the electronic signal processing device control for example a microprocessor, memorizes the initial position corresponding to a certain configuration of the contacts, and, like the series of combinations are given, each movement of the wheel of hours of, for example, twenty minutes can be detected.
  • the synchronization device can better detect the state changes while requiring less space for the electronic circuit connected to the device. So, space, important insofar as the device synchronization is used in a room watchmaking, in particular a wristwatch, can remain minimal.
  • Figure 1 shows a contact wheel 1 of the synchronization device D according to the invention.
  • the device D according to the invention is intended to be used in a timepiece to synchronize the display digital time zone with analog display of the current time.
  • a contact spring 2, having in this example four arms 4, 6, 8 and 10, is fixed on the wheel contact 1.
  • Wheel 1 has a center C located on its axis of symmetry and is associated with a cog in the room of watchmaking.
  • the wheel 1 is arranged to be driven by the hour wheel, not shown, of the part of watchmaking.
  • the contact wheel is a twelve hour wheel but this wheel can be a wheel twenty-four hours too. How to drive the wheel 1 by the clockwork gear can be carried out way known to those skilled in the art who will not described in detail here.
  • the contact spring 2 is mounted axi-symmetrically relative to wheel 1 in center C of this last, and is shown in more detail in Figure 2.
  • the spring 2 is made of a conductive material and here includes two pairs of arms 4, 6 and 8, 10 which extend longitudinally from center C outwards, with an angle of symmetry ⁇ which is here 180 °.
  • spring 2 can include several pairs of arms taking advantage of the same geometries. The angle of symmetry ⁇ thus depends on the number of pairs of arms. Symmetries would then change to 120 ° for three pairs, to 90 ° for four pairs and on.
  • Spring 2 includes a hub 2a having a central opening 3 centered on point C allowing the mounting of spring 2 on the contact wheel 1 in a manner also known to those skilled in the art.
  • Figure 2a shows a sectional view of an arm of the spring 2 of figure 2.
  • the pairs of conductive arms 4, 6 and 8, 10 are electrically connected to each other at hub 2a.
  • Each arm is identical to the other, In this example, each arm 4, 6, 8, 10, only one being shown in Figure 2a, consists of three parts different.
  • a first part, referenced by 11, forms together with the first parts of the other arms the hub 2a.
  • This inner part 11, coming from the center of the spring 2 is associated with a second central part 12 which, preferably, is slightly inclined relative to the first part 11.
  • a third part 13 forms the free end of the arm and is preferably still inclined relative to the central part 12 of the arm.
  • the second part 12 and the free end 13 can be replaced by a single part having an inclination equal to the inclination total of the two parts 12 and 13.
  • the free end 13 has an inclined point that extends to a runway contact to make friction contact therewith as will be explained in more detail below.
  • the two arms of the same pair have an offset angular ⁇ between them.
  • the two pairs of arms of the mode of realization described here are arranged symmetrically by relative to the center C.
  • the angle ⁇ being in this example 40 °, but it can be chosen different too. Indeed, the conditions to be fulfilled by the arrangement of the arms, and therefore the limit values of the angle ⁇ depend on the layout of contact leads as will be also explained in more detail below.
  • Contact leads are shown schematically in FIG. 3.
  • the tracks are deposited, by a method well known to those skilled in the art, on a printed circuit placed under the contact wheel 1 of the figure 1.
  • the circuit is associated with the synchronization D according to the invention so that this last one is connected to an electronic device for generating control signals P, for example a microprocessor for receiving pulses which are generated when the arms 4, 6, 8, 10 come into contact with the contact tracks.
  • the tracks form contact pads arranged circularly and defining a ring A.
  • the ring A has several ranges different, here three different kinds of ranges T1 or T2 or T3 and T4 and T5, which are each separated from one the other of a separating space having an angle at the center ⁇ .
  • the length of a track is defined by the center angle ⁇ .
  • We still define the sum of the length of a track and the separating space as the repetition angle ⁇ , so ⁇ ⁇ + ⁇ .
  • FIG. 3 shows three first distinct contact areas, called detection areas referenced by T1, T2 and T3, each having a length ⁇ 1 which in this example is of the order of 50 °, therefore ⁇ 1 > ⁇ .
  • the distance between each of these detection tracks is ⁇ 1 which is in this example of the order of 10 °.
  • the first contact pads T1, T2, T3 are distributed regularly over the first half (180 °) of the ring A.
  • the ring A further comprises on its other half, called the second half, three second and three third contact pads, referenced T4 and T5.
  • the length of each of the second ranges T4 is ⁇ 2
  • of each of the third ranges is ⁇ 3
  • the areas T4 and T5 are spaced from each other by a distance ⁇ 2 , here of the order of 10 °.
  • the second contact pads T4 are distributed regularly over the second half of the ring A. These pads T4 also function as detection pads, but they can also function as supply pads as will be explained in more detail below.
  • the third contact pads T5, are also distributed regularly over the second half of the ring A.
  • the third contact pads T5 are supply pads which, together with one of the contact pads T1, T2, T3 or T4, generate a impulse when the conductive arms 4, 6, 8, 10 come into frictional contact with the pads, as will be explained in more detail below.
  • the third contact pads T5 are distributed alternately with respect to the contact pads T4.
  • the repetition angle ⁇ must repeat an integer m of times in the angle of symmetry ⁇ , which is here 180 °.
  • m corresponds to the number of phases, or hours, in the duration of a contact, as will be explained below.
  • tracks T1 to T5 relating to the arm 4, 6, 8, 10 makes it possible, in fact, to obtain an extension of the contact time between an arm and a track.
  • the parameter (n-1) corresponds to the number of contact pads between two arms, that is to say in the angle ⁇ .
  • condition (1) we understand that when this condition is met, the length of the electrical contact is extended to 2 ⁇ ⁇ , and for condition (2), the length of the electrical contact is extended to ( ⁇ + ⁇ ).
  • the parameter has the value "3".
  • ⁇ 1 must therefore fulfill condition (2), while ⁇ 2 and ⁇ 3 must fulfill condition (1).
  • the set of arms 4, 6, 8, 10 and ranges of contact T1 to T5 form a time zone detector of the synchronization device D according to the invention.
  • the change from one time zone to another is done by the user in a known manner, for example by pulling the stem of the timepiece including the device D according to the invention to then advance the display analog, for example the hour hand.
  • the display analog is set to the time chosen by the user, and the digital time zone display, which shows by example only the corresponding hour digit, must therefore be synchronized with the analog display modified by the synchronization device D according to the invention.
  • the electronic processing device control signals such as a P microprocessor, reads the coordinates of the position of the contact wheel 1 at when the timepiece stem is pulled out to change the analog display. So the configuration of generated pulse states is stored.
  • the analog and digital displays must be synchronized. By changing the analog display, the position of contact wheel 1 is therefore changed by correspondingly. Arms 4, 6, 8, 10 will generate a sequence of impulses when they come into contact with contact tracks T1 to T5. These impulses form set of codes giving corresponding information time information provided by analog display.
  • the duration of a state defines the resolution of the detection and therefore depends on the geometry of the arms and contact leads. For example, for the geometry shown in Figures 1 and 3, the tracks will be linked in different configurations every twenty minutes, this which corresponds to a movement of ten degrees. However, we understands that for a geometry different from that shown here, a change of state can last more or less as long as twenty minutes or ten degrees.
  • the resolution is determined by the desired result in considering physical and electronic restrictions of synchronization device, such as square available, and consumption of electronics.
  • the contact wheel 1 is a twelve-hour wheel.
  • the arms, which are associated with the contact wheel 1 have a symmetrical geometry, the sequence of the changes of states generated, that is to say the different possible configurations, will be repeated every six hours (180 ° ).
  • we would still like to detect a change of state of twenty minutes. For this, we need three states per hour, and eighteen states in total. This therefore requires five different contacts (2 5 32> 18).
  • Figure 4 schematically represents several combinations of the arms of the contact spring 2 with the tracks T1 to T5.
  • the starting position in this example is 12 noon. We see that thus the tracks T3 and T5 are interconnected ( Figure 4a). If we advance the analog hour display position, tracks T1, T3 and T4 will be linked ( Figure 4b). Advancing another hour, tracks T1 and T5 will be linked (figure 4c), and after another hour, these are the tracks T1, T2 and T4 which are interconnected ( Figure 4d).
  • contact T4 is connected to an Input-Output (I / O) gate of microprocessor P. If T4 is not at voltage V dd , track T5 is not contacted. Thus, the contact T5 is used as a "pseudo-input" thanks to which we obtain the five contacts necessary to detect the 18 states.
  • I / O Input-Output
  • T4 contact increases detection resolution without the need for additional tracks increasing the size of the device D according to the invention.
  • T4 and T5 there are has three different possibilities to power contacts, i.e. by T4 and T5, by T5, or by T4.
  • the electrical contacts can be described by hexadecimal numbers.
  • the eighteen possible states are as follows (always according to FIGS. 4 and 5): state no. 1 2 3 4 5 6 7 8 9 T1 + T2 + T3 1 1 1 5 5 5 4 4 4 T4 + T5 1 3 2 2 3 1 1 3 2 state no. 10 11 12 13 14 15 16 17 18 T1 + T2 + T3 6 6 6 2 2 2 3 3 3 T4 + T5 2 3 1 1 3 2 2 3 1
  • the device for developing control signals further includes means for analyzing read states by microprocessor P. Of course, this analysis must react reasonably to each movement.
  • Figure 6 shows a state change diagram of the analog display starting from the initial state no. "9".
  • states 8 or 10 may just be a very small movement of the needle hours of the analog display, see figure 6a. A only change of a state is therefore not considered defined movement. The memorized state then remains the old state. In the worst case, movements of almost forty minutes or almost twenty degrees so are not accepted as an hour hand jump requiring synchronization of the digital display, see Figure 6b.
  • the movement of an hour change that is detected and which requires synchronization of the displays corresponds to a change from two to four states, depending on the starting position of the needle hours.
  • the minimum angle that is considered to jump than an hour would be just over forty minutes or of twenty degrees. In the worst case, the maximum angle includes then just under 100 minutes or 50 degrees.

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

Claims (7)

  1. Synchronisationsvorrichtung (D) für ein elektronisches Zeitmeßgerät, das einen Zeitgeber, ein Werk, eine durch das Werk angetriebene analoge Anzeige für die Anzeige von Zeitinformationen sowie einen elektronischen Zähler zum Speichern bestimmter dieser Informationen umfaßt, wobei die Synchronisationsvorrichtung dazu bestimmt ist, die Anzeige mit dem Zähler zu synchronisieren, wobei diese Vorrichtung umfaßt:
    ein Kontaktrad (1), das so beschaffen ist, daß es durch das Werk angetrieben wird, und Kontaktfinger (4 ,6; 8, 10) aufweist, die mit Kontaktflächen (T1, T2, T3, T4, T5) in Kontakt gelangen sollen, die auf einer gedruckten elektronischen Schaltung, die unter dem Rad (1) angeordnet und der Synchronisationsvorrichtung zugeordnet ist, kreisförmig angeordnet sind,
    eine elektronische Steuervorrichtung (P), die mit der gedruckten elektronischen Schaltung verbunden ist und der Synchronisationsvorrichtung (D) zugeordnet ist,
    wobei diese Vorrichtung dadurch gekennzeichnet ist, daß
    das Kontaktrad (1) wenigstens zwei Paare von Kontaktfingern (4, 6; 8, 10) aufweist, die miteinander elektrisch verbunden sind und sich longitudinal vom axialen Zentrum (C) dieses Rades (1) zu den Kontaktflächen (T1, T2, T3, T4, T5) erstrekken, wobei diese Fingerpaare symmetrisch in bezug auf das Zentrum (C) mit einem Symmetriewinkel Ω zwischen jedem Paar angeordnet sind, wobei die beiden Finger desselben Paars (4, 6; 8, 10) einen Winkelabstand α aufweisen, und daß die elektronische Steuervorrichtung (P) eine elektronische Schaltung zur Verarbeitung von Steuersignalen aufweist, die dazu bestimmt ist, elektrische Impulse zu empfangen, die erzeugt werden, wenn die Fingerpaare (4, 6; 8, 10) mit den Kontaktflächen (T1, T2, T3, T4, T5) in Kontakt gelangen, wobei diese Impulse gemeinsam Codes bilden, die die Information angeben, die den zeitlichen Informationen entspricht, die von der analogen Anzeige geliefert werden,
    wobei die Kontaktflächen (T1, T2, T3, T4, T5) einen Ring (A) definieren, wobei die Länge jeder der Flächen einen Zentrumswinkel  besitzt, wobei die Flächen voneinander um einen Zentrumswinkel ε getrennt sind und einen Wiederholungswinkel γ =  + ε besitzen, wobei sich der Wiederholungswinkel γ gemäß einer ganzen Zahl m im Symmetriewinkel Ω wiederholt, wenn  ≥ α, und wobei sich der Wiederholungswinkel γ gemäß einer ganzen Zahl 2m im Symmetriewinkel Ω wiederholt, wenn  < α, und umfassend:
    m erste verschiedene Erfassungskontaktflächen (T1, T2, T3), die auf einer ersten Hälfte des Rings (A) regelmäßig verteilt sind und eine Länge 1 besitzen, die größer oder gleich dem Winkel α ist, und
    m zweite (T4) und m dritte (T5) verschiedene Kontaktflächen, die auf der zweiten Hälfte des Rings (A) regelmäßig und abwechselnd verteilt sind, wobei jede zweite Fläche eine Länge 2 besitzt und jede dritte Fläche eine Länge 3 besitzt, wobei diese Längen 2 und 3 kleiner als der Winkel α sind, um zwei Flächen mit den Armen (4, 6; 8, 10) zu verbinden.
  2. Synchronisationsvorrichtung (D) nach Anspruch 1, dadurch gekennzeichnet, daß das Stundenrad (1) ein Zwölfstunden-Rad ist, das in zwölf Stunden eine Umdrehung ausführt.
  3. Synchronisationsvorrichtung (D) nach Anspruch 1, dadurch gekennzeichnet, daß das Stundenrad (1) ein Vierundzwanzigstunden-Rad ist, das in vierundzwanzig Stunden eine Umdrehung ausführt.
  4. Synchronisationsvorrichtung (D) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Winkelabstand (α) zwischen den beiden Fingern desselben Paars (4, 6; 8, 10) vierzig Grad beträgt.
  5. Synchronisationsvorrichtung (D) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Arme (4, 6; 8, 10) eine Kontaktfeder (2) bilden, die in bezug auf das Stundenrad (1) axialsymmetrisch angebracht ist.
  6. Synchronisationsvorrichtung (D) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jeder Arm ein freies Ende (13) aufweist, das in bezug auf die Ebene, in der sich das Stundenrad (1) befindet, geneigt ist.
  7. Synchronisationsvorrichtung (D) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zweiten Kontaktflächen (T4) mit einem Eingangs-/Ausgangs-Gatter der elektronischen Steuervorrichtung (P) verbunden sind, um als Erfassungsflächen und als Versorgungsflächen zu dienen.
EP96113121A 1995-08-22 1996-08-16 Synchronisationsvorrichtung für eine elektronische Uhr Expired - Lifetime EP0759584B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2393/95 1995-08-22
CH239395 1995-08-22
CH02393/95A CH688950B5 (fr) 1995-08-22 1995-08-22 Dispositif de synchronisation d'un affichage analogique avec un compteur électronique dans une pièce d'horlogerie.

Publications (2)

Publication Number Publication Date
EP0759584A1 EP0759584A1 (de) 1997-02-26
EP0759584B1 true EP0759584B1 (de) 2001-01-31

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EP96113121A Expired - Lifetime EP0759584B1 (de) 1995-08-22 1996-08-16 Synchronisationsvorrichtung für eine elektronische Uhr

Country Status (9)

Country Link
US (1) US5734626A (de)
EP (1) EP0759584B1 (de)
JP (1) JPH09119990A (de)
CN (1) CN1095102C (de)
CH (1) CH688950B5 (de)
DE (1) DE69611709T2 (de)
HK (1) HK1012443A1 (de)
SG (1) SG64401A1 (de)
TW (1) TW308655B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6582118B1 (en) * 1997-04-25 2003-06-24 Seiko Instruments Inc. Electronic timepiece having transmission wheel rotational position detecting apparatus
CN1132079C (zh) * 1997-04-25 2003-12-24 精工电子有限公司 电子表
US6088302A (en) 1997-04-25 2000-07-11 Seiko Instruments Inc. Electronic timepiece
JP2935182B1 (ja) * 1998-02-13 1999-08-16 セイコーインスツルメンツ株式会社 電子時計
DE19910149A1 (de) * 1999-02-26 2000-08-31 Siemens Ag Kodierschalter mit einem drehbaren Schaltglied
DE102009029663A1 (de) * 2009-09-22 2011-03-24 Robert Bosch Gmbh Verfahren zur Kommunikation zwischen einem Mikrokontroller und einem Endstufenbaustein sowie Endstufenbaustein
EP2360538B1 (de) * 2010-02-23 2012-08-22 ETA SA Manufacture Horlogère Suisse Vorrichtung für eine elektromechanische Armbanduhr, die eine Bestimmung des Zeitpunkts und der Drehrichtung ermöglicht, in die ein Zeitanzeiger korrigiert werden muss
WO2012157729A1 (ja) * 2011-05-18 2012-11-22 シチズンホールディングス株式会社 電子時計
CN110716420B (zh) * 2019-09-23 2020-11-10 维沃移动通信有限公司 可穿戴设备及显示方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398245A (en) * 1966-09-13 1968-08-20 United Carr Inc Printed circuit switch
US4253173A (en) * 1979-10-15 1981-02-24 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Dual display synchronization system for a timepiece
JPS5979885A (ja) * 1982-10-29 1984-05-09 Citizen Watch Co Ltd 電子時計
JPS6066180A (ja) * 1983-09-21 1985-04-16 Seikosha Co Ltd 報時時計
US4712926A (en) * 1985-06-29 1987-12-15 Rhythm Watch Company Limited Electronic timepiece
GB2217914B (en) * 1988-04-23 1992-02-19 Proizv Ob Mi Chasovoi Z Switching device for electronic watch

Also Published As

Publication number Publication date
DE69611709T2 (de) 2001-08-16
CH688950B5 (fr) 1998-12-31
CN1095102C (zh) 2002-11-27
DE69611709D1 (de) 2001-03-08
JPH09119990A (ja) 1997-05-06
CN1152139A (zh) 1997-06-18
TW308655B (de) 1997-06-21
CH688950GA3 (fr) 1998-06-30
EP0759584A1 (de) 1997-02-26
US5734626A (en) 1998-03-31
SG64401A1 (en) 1999-04-27
HK1012443A1 (en) 1999-07-30

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