EP1456719A1 - Mecanisme d'horlogerie radio-pilote pour l'ajustement de l'aiguille - Google Patents

Mecanisme d'horlogerie radio-pilote pour l'ajustement de l'aiguille

Info

Publication number
EP1456719A1
EP1456719A1 EP02804898A EP02804898A EP1456719A1 EP 1456719 A1 EP1456719 A1 EP 1456719A1 EP 02804898 A EP02804898 A EP 02804898A EP 02804898 A EP02804898 A EP 02804898A EP 1456719 A1 EP1456719 A1 EP 1456719A1
Authority
EP
European Patent Office
Prior art keywords
contact
hour
radio
ring
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.)
Withdrawn
Application number
EP02804898A
Other languages
German (de)
English (en)
Inventor
Andreas Dittrich
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.)
Eurochron GmbH
Original Assignee
Eurochron GmbH
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 Eurochron GmbH filed Critical Eurochron GmbH
Publication of EP1456719A1 publication Critical patent/EP1456719A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means
    • G04C9/08—Electrically-actuated devices for setting the time-indicating means by electric drive
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal

Definitions

  • the invention relates to a radio clockwork according to the preamble of claim 1.
  • Such a radio clockwork is known from EP 0 204 851 A2 with a four bit wide encoder for an indirect quasi-continuous electromechanical detection of the hour hand position.
  • four circles concentric to the pointer shaft axis are queried by means of four mutually insulated bending springs for radially successive presence or absence of ohmic contacts in the angular position just reached, which is binary-coded by the contact pattern.
  • This is mechanical and expensive in terms of space; and because of the uncertainties in the ohmic contact to the current contact pattern, such a pointer position query is relatively imprecise, at least very sensitive to interference.
  • a light barrier is provided for this purpose, which also detects the hour hand position indirectly, namely again on the hour hand wheel behind the dial.
  • the pointer wheel and the intermediate wheel in front of it in the gear train i.e. faster and even rotating in opposite direction, engage in this light barrier as perforated diaphragm disks, so that even large-area diaphragm openings, which require little adjustment on the part of the production and yet allow a wide light beam to pass through to the receiver of the light barrier, pass through the only very short aperture overlap is an extremely precise, e.g. B. Ensure minute-by-minute response when querying the hour wheel.
  • the invention is based on the object of an analog radio-controlled movement of the generic type with - to find the exact current hour hand position quickly and immediately after the start of operation from a random hand position - to create practically constant tracking of the actual hour hand movement, which is less expensive in terms of equipment and circuitry than the generic, complete multi-bit angular position decoding ,
  • a contact sequence is in principle arranged along a circle, which is assigned to the hour division of the minute track on the dial of the clock, that is to say, in the usual twelve-hour dial, consists of 12 contacts which are spaced apart in an arc-shaped manner.
  • a half-hour contact sheet is assigned to each of those hour contact sheets, which for example extends over the second half hour of an hour.
  • the contact sheets are scanned by sliding contact springs that rotate synchronously with the hour hand of the watch, the hour and half-hour contact fingers.
  • contact fingers are preferably both at ground potential and thus, in the angular position just reached, place an hour contact arc on one of the two circular paths and, in the second half hour thereof, the half-hour contact arch at ground potential.
  • a decoding logic continuously queries which of the hourly contact sheets is currently at ground potential, and thus practically gaps the hour currently displayed.
  • the clock's pointer-time display is in the first half hour of the current hour, otherwise in the second.
  • the current position of the hour hand is practically always represented by an hour contact and within its arc length by the associated half-hour contact, i.e. the position of the hands in the twelve-hour divided dial is always exactly to the half hour Right.
  • the clockwork therefore only needs to turn until the next half-hour change at the start of operation, and the exact current pointer position is known, from which the defined pivoting of the hands can then take place at the moment actually given.
  • the response to the half-hour change is fraught with uncertainty due to the inevitable gearlessness, especially when it comes to the ohmic contact of the contact finger sliding on a contact sheet.
  • the contact request is therefore only made at a defined point in time, in the case of the half-hour division, preferably at the beginning of the first and the thirtieth minute of each hour.
  • the light barrier detection device according to DE 35 10 861 C2 is used for this.
  • the hour wheel is preferably made with a total of 24 diametrically distributed holes or, for mechanical stability reasons, completely made of optically transparent material without holes to allow light to pass through.
  • the intermediate wheel located in the gear train in front of the minute wheel and therefore rotating both faster and in opposite directions also engages in the light barrier with an aperture hole.
  • Another light-barrier intervention of a second hand wheel and the counter rotating intermediate wheel in the gear train in front of it as aperture perforated disks even allows the half-hour position to be recorded to the second.
  • the described contact grouping of 12/24 contact sheets on two radii would clearly provide an hour-by-hour determination of the current pointer position, which would be recorded at the exact hour on the hour using the light barrier function above.
  • the contacts for the quasi-continuous but frequent, namely half-hour hand position detection can be formed or mounted on the same side of a circuit board which is penetrated by the hour hand shaft and covered with conductor tracks and which also carries the detection evaluation circuit and the radio clock circuit on this surface, in particular an autonomous time-keeping Circuit and receiver, decoder, comparator and motor control, the functions of which are partially combined in one processor.
  • the pointer position-dependent detection of the successive contact arcs expediently takes place in that the decoding and evaluation circuit determines whether one or two contacts are currently connected to ground potential in the current hour hand angle position. Because then there is no need for mutually insulated grinding springs to be moved in a rotationally rigid manner and to be connected to the evaluation circuit via separate commutators; then it is sufficient to bend the contact springs all out as contact fingers out of a single disc made of resilient, electrically conductive material that is entrained in rotation by the hour hand shaft and to place this contact disc constantly at ground potential by means of a further finger via a contact ring.
  • the constant common ground potential then also provides the advantage of an electrically interference-free contact query that is shielded against potential. Because within the radius of the curved contacts, there is an electrically well-shielded space between the contact disk, which is at ground potential, and the circuit board, in which the optical receiver of a z. B. designed as a fork photoelectric detector for the light barrier in the gear train of the pointer mechanism for periodic release of the contact query is arranged so that its operation is well protected against environmental influences.
  • Another contact finger can also access the circuit board, namely now a continuous contact ring, which is then a wake-up signal. triggering acts.
  • This contact finger is expediently kept electrically insulated from the wake-up contact ring by a spacer ring.
  • the spacer ring has an interruption to a certain pointer angle position (i.e. time on the dial), through which the contact finger can fall in contact with the corresponding contact position on the alarm contact ring without a wheel of the factory now having to be axially displaced for this alarm signal triggering.
  • the spacer ring can be rotated about the pointer shaft axis and thus the incident interruption can be set manually to a time in which the spacer ring remains frictively secured against the rotary movement when the alarm contact finger has lifted off the alarm contact ring again via a ramp on the incident opening in order to continue to synchronize be rotated chronically with the hour hand on the spacer ring until the opening is reached again after one hour hand has rotated.
  • the described group of contact fingers can be offset from one another several times, for example by 120 ° or by 180 °, for symmetrical force distribution , This prevents tilting moments on the contact disk and, via this, on the hourly shaft.
  • FIG. 1 in the broken-off axial longitudinal section, the wheels of an analog indicating electromechanical radio-controlled clockwork with an inventive angular position query of the hour hand and integrated additional wake-up signal switch and
  • FIG. 2 shows a functionally representative contact pattern for the half-hour query of the hour hand position according to FIG. 1.
  • the sketched electromechanical radio-controlled clockwork 11 is for analog time display in front of a front part of the housing 12 serving as a dial carrier on the free ends of a hollow hour hand shaft 13, a likewise hollow minute hand shaft 14 which is rotatably held therein and a central second hand shaft 15 each with a pointer seat 16 Clamping hands (not shown) equipped.
  • the hour and minute wheel hollow shafts 13, 14 are not centered by means of the second hand shaft 15, but by means of a support tube 17 surrounding them on a support plate 18 fixed to the housing.
  • a minute wheel 19 non-rotatably connected to the minute hand shaft 14 supports its pointer seat 16 axially against the carrier plate 18 and, in turn, coaxially supports an hour wheel 20 non-rotatably connected to the hour hand shaft 14. Both are gearingly connected to one another via an intermediate wheel 21 which is connected to the pinion 22 by Minute wheel 19 is driven and in turn drives the hour wheel 20 with a pinion 23 while reversing the direction of rotation and reduction.
  • the intermediate wheel 21 is mounted on a pin 24 between the carrier plate 18 and a circuit board 25 arranged fixed to the housing.
  • the electromagnetic step motor for driving the second wheel 26 and the further intermediate wheels (between the step motor and the second wheel 26 and between this and the minute wheel 19) as well as the complete, transversely operating light barrier 55 are not covered by the section shown.
  • the printed circuit board 25 carries on its surface 27 facing away from the carrier plate 18 and thus facing the front part 12 of the housing a contact ring 28 which is specially applied or which is formed by a corresponding course of a conductor track lamination and concentrically surrounds the hour hand shaft 13. formed contact fingers 29 supported under spring preload.
  • the contact finger 29 is rotatably rigid with the hour hand shaft 13 about the central axis 30 of the movement 11.
  • An hourly contact arc 34 extends along a circle which is concentric with the contact ring 28, isolated from one another, on the surface 27 of the printed circuit board, in accordance with the division of hours on the dial minute track, ie regularly twelve pieces.
  • an hour contact finger 35 rotates synchronously with the hour hand movement, ie with the hour hand shaft 13, which is also bent out of the contact disk 31, as can be seen in the drawing.
  • the two contact fingers 29-35 and the contact disk 31 common to them always short-circuit that hour contact arc 34 with the contact ring 28, which is assigned to the current angle of rotation position of the hour wheel 20 and thus a current pointer angle position in front of the dial.
  • the half-hour contact sheets 37 become 20 in the course of the rotation of the hour wheel 20 contacted one after the other by means of a further contact finger 38 protruding from the contact disk 31, that is, in the example shown, also placed successively on ground via the contact disk 31 and the contact ring 28.
  • the evaluation circuit 36 which is also connected to the half-hour contact arch 37, not only detects the currently prevailing ground potential to which hour range the hour hand currently points, but also whether it is still the first or - because the associated half-hour contact arch 37 meanwhile also also has ground potential is - whether it is already the second half of this current hour.
  • the evaluation circuit 36 can recognize at any time in which hourly interval the hour hand is currently and in which half-hourly interval the minute hand coupled with it is currently.
  • reflex light barrier 55 is provided.
  • the symbolically illustrated positioning of at least its receiver 39 on the printed circuit board 25 axially below the contact disk 31 which is constantly at ground potential has the advantage of being well shielded from the electrical point of view.
  • the course of the light barrier through a hole 57 in the intermediate wheel 21 and through the optically transparent or driven by its pinion 22 is used - as described in more detail in DE 35 10 861 C2 mentioned at the beginning with 24 holes 56 hour wheel 20.
  • the contact fingers 29, 35, 38 do not all lie along the same radius of the contact disk 31, but offset angularly with respect to one another, in order to allow the contact disk 31 to press against the printed circuit board 25 without tilting. Since the contact disk 31 rotates synchronously with the hour wheel 20, that is to say with the hour hand in front of the dial, it is expedient to form a further contact finger 40 on it which serves to trigger the alarm.
  • the spacer ring 42 has a radial incidence opening 43 for the passage of the wake-up contact finger 40 axially over the wake-up contact ring 41 at only one point on its circumference.
  • the spacer ring 42 with its incidence opening 43 is thus fixed to the housing itself, that is to say rotatably with respect to the rotary movement of the hour wheel 20 with its wake-up contact finger 40.
  • the angular position of the spacer ring 42 with its incidence opening 43 can, however, be set manually by means of a spur toothing 46, as a result of which the triggering time for the wake-up signal can be variably predetermined.
  • the spacer ring 42 is designed as a radially projecting circumferential flange on the inner circumferential surface of a ring gear 47, as can be seen from the cross-sectional illustration in the drawing.
  • the ring gear 47 is radial, with a hollow pin 48 protruding from its wheel disc 49, at the free end of which a pointer seat 16 is formed for the wake-up pointer, on the hour hand shaft 13 in Front housing part 12 and axially mounted between the front housing part 12 and the circuit board 25.
  • a spring arm 50 is sheared out of the wheel disc 49 oriented parallel to the front part 12 of the housing, which rests with its free end against the
  • the inner wall of the front housing part 12 is elastically supported as a friction.
  • a pawl engagement can even be formed, which acts as a directional lock 51 in order not to be able to rotate the incidence opening 43 relative to the wake-up contact finger 40 against the steep incidence edge 44, but only via the lifting ramp 45. This also ensures that turning the spacer ring 42 does not result in the hour wheel 20 rotating with the wake-up contact finger 40, that is to say the hour hand in front of the dial is not displayed correctly.
  • the solution according to the invention provides an electro-mechanical radio-controlled clockwork 11 with an analog display for quickly and automatically reaching one of many pointer reference positions, in particular without requiring a long gear run for the pointer movement into one of a few or even into a single reference position.
  • the detection of reaching the reference position also does not require the equipment for a multi-digit binary-coded angular position transmitter with its interference-sensitive multiple contacting, as well as without a poorly miniaturized query of different spoke widths in the hour wheel.
  • twelve contact sheets 34 assigned to the hour division on the dial are scanned in succession with the rotary movement of the hour wheel 20, which gives rough information about the current hour orientation of the hour hand, within which the current half hour is queried via a further contact sheet 37.
  • the query torque at the beginning of every half hour is specified very precisely by a sensor in the pointer gearbox - especially a light barrier.
  • these are expediently via contact fingers 35 and 38 on a common contact disk 31, which rotates with the hour wheel 20, and placed one after the other at ground potential via a contact ring 28.
  • the contact disk 31 can additionally be equipped with a wake-up contact finger 40, which rotates on a spacer ring 42 over a wake-up contact ring 41, but in a predeterminable angular position contacts the wake-up contact ring 41 for triggering a wake-up signal through a radially oriented slot-shaped insertion opening 43 in the spacer ring 42, without any the need to axially shift the pointer-bearing wheels from the pointer mechanism.
  • a wake-up contact finger 40 which rotates on a spacer ring 42 over a wake-up contact ring 41, but in a predeterminable angular position contacts the wake-up contact ring 41 for triggering a wake-up signal through a radially oriented slot-shaped insertion opening 43 in the spacer ring 42, without any the need to axially shift the pointer-bearing wheels from the pointer mechanism.

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

Abstract

L'invention concerne un mécanisme d'horlogerie radio piloté (11) électromécanique à indication de l'heure analogique. L'objectif de l'invention est que l'aiguille atteigne rapidement et automatiquement une position de référence, en particulier sans longue course d'engrenage pour le déplacement de ladite aiguille vers une position de référence, parmi seulement un petit nombre de positions de référence, voire vers une position de référence unique. La détection de l'arrivée dans sa position de référence de l'aiguille doit en outre, cependant, se faire sans la complexité technique d'un indicateur de position angulaire à codage binaire à plusieurs positions, lequel implique des mises en contact multiples sensibles aux perturbations, et également sans un dispositif d'interrogation de contact difficilement miniaturisable pour différentes largeurs de rayon de la roue des heures. A la place d'un tel système, des arcs de contact (34) associés aux heures marquées sur le cadran sont balayés l'un après l'autre selon le mouvement de rotation de la roue des heures (20), ce qui apporte une information grossière sur l'orientation du moment de l'aiguille des heures. Une reconnaissance de la position de l'aiguille d'une précision d'une demi-heure se fait lorsqu'un arc de contact de demi-heure (37) est associé à chaque arc de contact d'heure (34). Pour que les arcs de contact (34) soient interrogés successivement, ils sont, mis au potentiel de la masse, l'un après l'autre, par l'intermédiaire de doigts de contact (35) d'un disque de contact (31) commun, lequel tourne avec la roue des heures (20), et par l'intermédiaire d'une bague de contact (28). L'interrogation du potentiel des arcs de contact (34, 37) se fait, de façon opportune, par l'intermédiaire d'une barrière lumineuse, de façon commandée par le mécanisme d'aiguille, toujours exactement quand l'aiguille des heures prend une nouvelle position de demi-heure. Le disque de contact (31) est en outre pourvu d'un doigt de contact de réveil (40) qui tourne sur une bague d'écartement (42), par l'intermédiaire d'une bague de contact de réveil (41), mais qui, dans une position angulaire prédéterminée, vient en contact, par une ouverture d'arrêt (43) ménagée dans la bague d'écartement (42), avec la bague de contact de réveil (41) pour déclencher un signal de réveil.
EP02804898A 2001-12-17 2002-12-13 Mecanisme d'horlogerie radio-pilote pour l'ajustement de l'aiguille Withdrawn EP1456719A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2001161854 DE10161854B4 (de) 2001-12-17 2001-12-17 Funkuhrwerk mit Detektor für die Zeigerstellung
DE10161854 2001-12-17
PCT/EP2002/014247 WO2003052527A1 (fr) 2001-12-17 2002-12-13 Mecanisme d'horlogerie radio-pilote pour l'ajustement de l'aiguille

Publications (1)

Publication Number Publication Date
EP1456719A1 true EP1456719A1 (fr) 2004-09-15

Family

ID=7709475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02804898A Withdrawn EP1456719A1 (fr) 2001-12-17 2002-12-13 Mecanisme d'horlogerie radio-pilote pour l'ajustement de l'aiguille

Country Status (8)

Country Link
US (1) US20050002278A1 (fr)
EP (1) EP1456719A1 (fr)
JP (1) JP2005513447A (fr)
KR (1) KR20040069330A (fr)
CN (1) CN1605049A (fr)
AU (1) AU2002366445A1 (fr)
DE (1) DE10161854B4 (fr)
WO (1) WO2003052527A1 (fr)

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Publication number Priority date Publication date Assignee Title
US7352655B2 (en) * 2005-05-17 2008-04-01 Delphi Technologies, Inc. Method and apparatus for automatic time correction of a mechanical clock
EP2360538B1 (fr) * 2010-02-23 2012-08-22 ETA SA Manufacture Horlogère Suisse Dispositif pour montre électromécanique permettant de déterminer le moment et le sens dans lequel une indication temporelle doit être corrigée
CN101975553B (zh) * 2010-10-14 2012-06-27 烟台持久钟表集团有限公司 时钟钟针位置检测装置及检测方法
JP6047223B1 (ja) * 2015-12-22 2016-12-21 セイコークロック株式会社 指針位置検出構造および時計
JP7149147B2 (ja) * 2018-01-17 2022-10-06 セイコーインスツル株式会社 時計用ムーブメントおよび時計
JP7099242B2 (ja) * 2018-10-16 2022-07-12 セイコーエプソン株式会社 電子時計、電子時計の制御回路及び針位置検出方法
EP4386494A1 (fr) * 2022-12-15 2024-06-19 ETA SA Manufacture Horlogère Suisse Montre connectee comportant un dispositif de mise a la masse commune d'un mouvement d'horlogerie

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Also Published As

Publication number Publication date
WO2003052527A1 (fr) 2003-06-26
CN1605049A (zh) 2005-04-06
DE10161854B4 (de) 2005-01-13
KR20040069330A (ko) 2004-08-05
DE10161854A1 (de) 2003-07-03
US20050002278A1 (en) 2005-01-06
JP2005513447A (ja) 2005-05-12
AU2002366445A1 (en) 2003-06-30

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