EP0041245A1 - Electronic time piece including an electro-acoustic transducer - Google Patents

Electronic time piece including an electro-acoustic transducer Download PDF

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Publication number
EP0041245A1
EP0041245A1 EP81104110A EP81104110A EP0041245A1 EP 0041245 A1 EP0041245 A1 EP 0041245A1 EP 81104110 A EP81104110 A EP 81104110A EP 81104110 A EP81104110 A EP 81104110A EP 0041245 A1 EP0041245 A1 EP 0041245A1
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EP
European Patent Office
Prior art keywords
decoration
electrode
timepiece
dial
transducer
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Granted
Application number
EP81104110A
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German (de)
French (fr)
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EP0041245B1 (en
Inventor
Claude André Gygax
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SSIH Management Services SA
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SSIH Management Services SA
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Publication of EP0041245A1 publication Critical patent/EP0041245A1/en
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Publication of EP0041245B1 publication Critical patent/EP0041245B1/en
Expired legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details

Definitions

  • the present invention relates to a timepiece comprising at least analog display means, the hands of which are located between a dial and a crystal carrying on its internal face a metallic decoration partially covering it to support an electro-acoustic transducer and ensure electrical coupling with the first electrode of said transducer, a printed circuit located inside the timepiece comprising the control electronics and the output terminals of an electrical signal of acoustic frequency, and an electrical connection device comprising two conductive leads arranged, the first to come into contact with said metallized decoration, the second to come into contact with the second electrode of said transducer.
  • Timepieces are known, the alarm device of which is in the form of an electro-acoustic transducer operatively associated with the watch crystal. It is generally a piezoelectric patch bonded to the internal face of the crystal and which receives an acoustic signal from the electronics of the watch.
  • the utility model JA 1 223 023 describes an electric alarm clock which includes a piezoelectric plate fixed to the inner face of the glass. The plate oscillates at an audible frequency thanks to the signals emitted by the circuit arranged in the box. The wafer in turn causes the ice to audibly vibrate.
  • the plate is in the center of the crystal and its connection to the internal circuit is made by means of two wires which first pass through the crystal and then penetrate inside the watch through a hole made in the periphery of the dial.
  • the present invention overcomes this drawback by proposing a construction in which welds or conductive adhesive are avoided. to connect the wafer to its power source, which greatly facilitates the fitting of the watch.
  • the object of the present invention is to propose, in a timepiece with an analog mechanical display, connection means between the electronic module and the electro-acoustic transducer, means which appear in the claims.
  • FIG. 1 shows a timepiece with analog display provided with hands 18.
  • the dial 1 bears the hour markers 2 and appears through a crystal 3.
  • the dial is partially masked by a decoration 4 which is affixed to the inside of the glass. Under this decoration appears in dotted lines a piezoelectric transducer 5 and the pins 12 which will be discussed below.
  • FIG 2 which is a section along line A - A of Figure 1 shows the same elements.
  • the glass 3 is coated on its internal face with a decoration 4 which partially covers it and which has the particularity of being electrically conductive.
  • the transducer 5 is a piezoelectric patch which has on each of its faces electrodes 6 and 7.
  • the first electrode 6 is applied directly to the metal decoration and is fixed there by means of glue for example. This produces an electrical and mechanical coupling between the electrode 6 and the metallized decoration 4.
  • the drawing also shows the dial 1, the movement 8 and the printed circuit 9 which comprises, in addition to the electronics, two output terminals for an acoustic signal. of which only 10 is shown.
  • the electrical connection between the output terminal 10 and the metallized decoration 4 is carried out by means of a conductive supply 11, one end of which rests on the decoration 4.
  • the connection between the output terminal not shown - because being in a different plane - and the second electrode 7 of the pad 5 is produced in the same way by a conductive supply of which only one of the support ends is shown.
  • each of the conductive leads comprise the assembly of a tenon 12 and a blade 13.
  • the tenon is soldered on the printed circuit at its terminal 10 and on the other side it is neckline in 14 identical to what is practiced for the tigeron which receives a usual second hand.
  • the blade 13, which is preferably made of gilded beryllium bronze, is riveted at its first end to a tube 15 fitted with greasy friction on the neck 14 and is supported at its second end 16 on the metallic decoration 4.
  • the another conductive feed is produced in the same way and only the second end 17 of its blade appears on the drawing, which rests on the second electrode 7 of the piezoelectric pad 5. The positions taken by the blades 16 and 17 before they bear on the first on the decoration 4 and the second on the electrode 7.
  • FIG. 2 shows that the printed circuit 9 is relatively distant from the piezoelectric pad 5 and that the point of contact of the blade 17 with the electrode 7 is not superimposed on the output terminal (not shown) of the sound signal located on the printed circuit 9.
  • the preferred embodiment of the invention This allows contact to be made both with distant points (by adjusting the length of the post) and with off-center points (by adjusting the length of the blade).
  • the adhesive film will be very thin, thus also allowing a capacitive electrical coupling between the metallized decoration 4 and the electrode 6.
  • the use of a conductive adhesive on at least part of the electrode 6 is also possible, thus making a galvanic connection with the metallic decoration 4.

Abstract

Pièce d'horlogerie électronique munie d'un dispositif d'alarme et moyens de liaison reliant la pastille sonore au circuit engendrant le signal sonore. La première électrode (6) de la pastille (5) est fixée mécaniquement et électriquement à une décoration métallisée (4) apposée sous la glace (3). Deux amenées conductrices (12) sont arrangées pour traverser le cadran et venir s'appuyer élastiquement la première sur ladite décoration (4) et la seconde sur la seconde électrode (7) de la pastille pour connecter ladite pastille aux bornes (10) du circuit délivrant le signal sonore. La construction proposée facilite l'emboîtage de la pièce d'horlogerie et permet de gagner du temps.Electronic timepiece fitted with an alarm device and connecting means connecting the audio chip to the circuit generating the audio signal. The first electrode (6) of the patch (5) is mechanically and electrically fixed to a metallized decoration (4) affixed under the glass (3). Two conductive leads (12) are arranged to pass through the dial and come to bear elastically the first on said decoration (4) and the second on the second electrode (7) of the pad to connect said pad to the terminals (10) of the circuit. delivering the sound signal. The proposed construction facilitates the fitting of the timepiece and saves time.

Description

La présente invention concerne une pièce d'horlogerie comportant au moins des moyens d'affichage analogiques dont les aiguilles se trouvent situées entre un cadran et une glace portant sur sa face interne une décoration métallisée la recouvrant partiellement pour supporter un transducteur électro-acoustique et assurer le couplage électrique avec la première électrode dudit transducteur, un circuit imprimé situé à l'intérieur de la pièce d'horlogerie comprenant l'électronique de commande et les bornes de sorties d'un signal électrique de fréquence acoustique, et un dispositif de liaison électrique comportant deux amenées conductrices arrangées, la première pour entrer en contact avec ladite décoration métallisée, la seconde pour entrer en contact avec la seconde électrode dudit transducteur.The present invention relates to a timepiece comprising at least analog display means, the hands of which are located between a dial and a crystal carrying on its internal face a metallic decoration partially covering it to support an electro-acoustic transducer and ensure electrical coupling with the first electrode of said transducer, a printed circuit located inside the timepiece comprising the control electronics and the output terminals of an electrical signal of acoustic frequency, and an electrical connection device comprising two conductive leads arranged, the first to come into contact with said metallized decoration, the second to come into contact with the second electrode of said transducer.

On connaît des pièces d'horlogerie dont le dispositif d'alarme se présente sous la forme d'un transducteur électro-acoustique opéra- tivement associé à la glace de la montre. Il s'agit généralement d'une pastille piézo-électrique collée sur la face interne de la glace et qui reçoit un signal acoustique issu de l'électronique de la montre. Par exemple, le modèle d'utilité JA 1 223 023 décrit un réveil électrique qui comporte une plaquette piézo-électrique fixée à la face intérieure de la glace. La plaquette oscille à une fréquence audible grâce aux signaux émis par le circuit disposé dans la boite. La plaquette à son tour provoque la mise en vibration audible de la glace. Dans le modèle cité, la plaquette se trouve au centre de la glace et sa connexion au circuit interne est réalisée au moyen de deux fils qui d'abord traversent la glace puis pénètrent à l'intérieur de la montre par un trou pratiqué à la périphérie du cadran.Timepieces are known, the alarm device of which is in the form of an electro-acoustic transducer operatively associated with the watch crystal. It is generally a piezoelectric patch bonded to the internal face of the crystal and which receives an acoustic signal from the electronics of the watch. For example, the utility model JA 1 223 023 describes an electric alarm clock which includes a piezoelectric plate fixed to the inner face of the glass. The plate oscillates at an audible frequency thanks to the signals emitted by the circuit arranged in the box. The wafer in turn causes the ice to audibly vibrate. In the cited model, the plate is in the center of the crystal and its connection to the internal circuit is made by means of two wires which first pass through the crystal and then penetrate inside the watch through a hole made in the periphery of the dial.

On conçoit que cette construction rend malaisé l'emboîtage de la pièce d'horlogerie. En effet, après avoir monté le cadran et mis en place les aiguilles, il faut connecter la plaquette aux fils d'alimentation au moyen de soudures ou de colle conductrice qui oblige de prévoir pour cette opération un personnel ayant reçu une formation spéciale.It is understandable that this construction makes it difficult to fit the timepiece. Indeed, after having mounted the dial and put the needles in place, the plate must be connected to the supply wires by means of soldering or conductive glue, which means that personnel who have received special training must be provided for this operation.

La présente invention remédie à cet inconvénient en proposant une construction où l'on évite des soudures ou de la colle conductrice pour connecter la plaquette à sa source d'alimentation, ce qui facilite grandement l'emboîtage de la montre.The present invention overcomes this drawback by proposing a construction in which welds or conductive adhesive are avoided. to connect the wafer to its power source, which greatly facilitates the fitting of the watch.

Une montre ressemblant à la définition générique exposée au premier alinéa ci-dessus est décrite dans l'exposé d'invention JA 54-59 968. Cependant, il s'agit là d'une montre à affichage numérique donc dépourvue de cadran interposé entre le module et la glace de la montre où le problème ne se pose pas de falloir ajouter aux amenées électriques des lames de contacts après que le cadran ait été monté, comme cela apparaîtra par la suite.A watch resembling the generic definition exposed in the first paragraph above is described in the disclosure of invention JA 54-59 968. However, this is a watch with digital display therefore without a dial interposed between the module and the watch glass where the problem does not arise from having to add contact blades to the electrical leads after the dial has been mounted, as will appear later.

La présente invention a pour but de proposer dans une pièce d'horlogerie à affichage mécanique analogique des moyens de connexion entre le module électronique et le transducteur électro-acoustique, moyens qui apparaissent dans les revendications.The object of the present invention is to propose, in a timepiece with an analog mechanical display, connection means between the electronic module and the electro-acoustic transducer, means which appear in the claims.

L'invention sera exposée maintenant dans la description qui suit et au moyen du dessin qui montre à titre d'exemple une version préférée de l'invention et dans lequel :

  • La figure 1 est une vue en plan de la pièce d'horlogerie,et
  • La figure 2 est une coupe à échelle agrandie selon la ligne A - A de la figure 1.
The invention will now be explained in the following description and by means of the drawing which shows by way of example a preferred version of the invention and in which:
  • FIG. 1 is a plan view of the timepiece, and
  • FIG. 2 is a section on an enlarged scale along the line A - A of FIG. 1.

La figure 1 montre une pièce d'horlogerie à affichage analogique pourvue d'aiguilles 18. Le cadran 1 porte les repères de l'heure 2 et apparaît au travers d'une glace 3. Le cadran est partiellement masqué pas une décoration 4 qui est apposée sur la face interne de la glace. Sous cette décoration apparaît en pointillé un transducteur piézo-électrique 5 et les tenons 12 dont il sera question plus loin.FIG. 1 shows a timepiece with analog display provided with hands 18. The dial 1 bears the hour markers 2 and appears through a crystal 3. The dial is partially masked by a decoration 4 which is affixed to the inside of the glass. Under this decoration appears in dotted lines a piezoelectric transducer 5 and the pins 12 which will be discussed below.

La figure 2 qui est une coupe selon la ligne A - A de la figure 1 fait apparaître les mêmes éléments. La glace 3 est revêtue sur sa face interne d'une décoration 4 qui la recouvre partiellement et qui a la particularité d'être électriquement conductrice. Le transducteur 5 est une pastille piézo-électrique qui possède sur chacunede ses faces des électrodes 6 et 7. Selon l'invention, la première électrode 6 est appliquée directement sur la décoration métallique et y est fixée au moyen de colle par exemple. On réalise ainsi un couplage électrique et mécanique entre l'électrode 6 et la décoration métallisée 4. Le dessin montre encore le cadran 1, le mouvement 8 et le circuit imprimé 9 qui comprend outre l'électronique deux bornes de sortie d'un signal acoustique dont une seule 10 est représentée. Toujours selon l'invention, la liaison électrique entre la borne de sortie 10 et la décoration métallisée 4 est réalisée au moyen d'une amenée conductrice 11, dont une des extrémités s'appuie sur la décoration 4. La liaison entre la borne de sortie non représentée - car se trouvant dans un plan différent - et la seconde électrode 7 de la pastille 5 est réalisée de la même façon par une amenée conductrice dont l'une des extrémités d'appui seule est représentée. Ces amenées sont situées sous la décoration 4 et ne sont donc pas visibles de l'extérieur de la pièce d'horlogerie.Figure 2 which is a section along line A - A of Figure 1 shows the same elements. The glass 3 is coated on its internal face with a decoration 4 which partially covers it and which has the particularity of being electrically conductive. The transducer 5 is a piezoelectric patch which has on each of its faces electrodes 6 and 7. According to the invention, the first electrode 6 is applied directly to the metal decoration and is fixed there by means of glue for example. This produces an electrical and mechanical coupling between the electrode 6 and the metallized decoration 4. The drawing also shows the dial 1, the movement 8 and the printed circuit 9 which comprises, in addition to the electronics, two output terminals for an acoustic signal. of which only 10 is shown. Always according to the invention tion, the electrical connection between the output terminal 10 and the metallized decoration 4 is carried out by means of a conductive supply 11, one end of which rests on the decoration 4. The connection between the output terminal not shown - because being in a different plane - and the second electrode 7 of the pad 5 is produced in the same way by a conductive supply of which only one of the support ends is shown. These feeds are located under the decoration 4 and are therefore not visible from the outside of the timepiece.

Selon une réalisation préférée de l'invention, chacune des amenées conductrices comprennent l'assemblage d'un tenon 12 et d'une lame 13. D'un côté le tenon est soudé sur le circuit imprimé à sa borne 10 et de l'autre côté il est décolleté en 14 de façon identique à ce qui est pratiqué pour le tigeron qui reçoit une aiguille de seconde habituelle. La lame 13, qui de préférence est réalisée en bronze au béryllium doré, est rivée à sa première extrémité sur un tube 15 ajusté à frottement gras sur le décolletage 14 et s'appuie à sa seconde extrémité 16 sur la décoration métallisée 4. L'autre amenée conductrice est réalisée de la même manière et seule apparaît au dessin la seconde extrémité 17 de sa lame qui s'appuie sur la seconde électrode 7 de la pastille piézo-électrique 5. On a indiqué en 16a et 17a les positions que prennent les lames 16 et 17 avant qu'elles ne prennent appui la première sur la décoration 4 et la seconde sur llélectrode7.According to a preferred embodiment of the invention, each of the conductive leads comprise the assembly of a tenon 12 and a blade 13. On one side the tenon is soldered on the printed circuit at its terminal 10 and on the other side it is neckline in 14 identical to what is practiced for the tigeron which receives a usual second hand. The blade 13, which is preferably made of gilded beryllium bronze, is riveted at its first end to a tube 15 fitted with greasy friction on the neck 14 and is supported at its second end 16 on the metallic decoration 4. The another conductive feed is produced in the same way and only the second end 17 of its blade appears on the drawing, which rests on the second electrode 7 of the piezoelectric pad 5. The positions taken by the blades 16 and 17 before they bear on the first on the decoration 4 and the second on the electrode 7.

On appréciera que la construction qui vient d'être décrite présente au moins deux avantages importants :

  • Lors du montage de la montre et une fois le cadran 1 mis en place, on pose les lames de contact 13 par emboîtage du tube 15 sur le décolletage 14 en même temps qu'on pose les aiguilles de la montre. De cette façon, lorsque le mouvement est introduit dans la boîte, les lames élastiques viennent faire contact avec les électrodes de la pastille sonore. On peut ainsi confier cette opération d'emboîtage à un personnel non spécialisé et de surcroît on économise du temps.
It will be appreciated that the construction which has just been described has at least two important advantages:
  • During assembly of the watch and once the dial 1 is in place, the contact blades 13 are placed by fitting the tube 15 onto the turning 14 at the same time as the hands of the watch are placed. In this way, when the movement is introduced into the box, the elastic blades come into contact with the electrodes of the sound pad. This casing operation can thus be entrusted to non-specialized personnel and, in addition, time is saved.

La figure 2 montre que le circuit imprimé 9 se trouve relativement éloigné de la pastille piézo-électrique 5 et que le point de contact de la lame 17 avec l'électrode 7 ne se trouve pas superposé à la borne de sortie (non représentée) du signal sonore située sur le circuit imprimé 9. Comme on le voit, la réalisation préférée de l'invention pemet d'assurer le contact et avec des points éloignés (en ajustant la longueur du tenon) et avec des points décentrés (en ajustant 1a longueur de la lame).FIG. 2 shows that the printed circuit 9 is relatively distant from the piezoelectric pad 5 and that the point of contact of the blade 17 with the electrode 7 is not superimposed on the output terminal (not shown) of the sound signal located on the printed circuit 9. As can be seen, the preferred embodiment of the invention This allows contact to be made both with distant points (by adjusting the length of the post) and with off-center points (by adjusting the length of the blade).

On mentionnera pour terminer que pour réaliser un bon couplage mécanique entre le transducteur 5 et la glace 3, le film de colle sera très mince, permettant ainsi également un couplage électrique capacitif entre la décoration métallisée 4 et l'électrode 6. L'emploi d'une colle conductrice sur une partie au moins de l'électrode 6 est également possible, réalisant ainsi une liaison galvanique avec la décoration métallisée 4.Finally, it should be mentioned that to achieve good mechanical coupling between the transducer 5 and the glass 3, the adhesive film will be very thin, thus also allowing a capacitive electrical coupling between the metallized decoration 4 and the electrode 6. The use of a conductive adhesive on at least part of the electrode 6 is also possible, thus making a galvanic connection with the metallic decoration 4.

Claims (3)

1. Pièce d'horlogerie électronique comportant au moins des moyens d'affichage analogiques dont les aiguilles (18) se trouvent situées entre un cadran (1) et une glace (3) portant sur sa face interne une décoration métallisée (4) la recouvrant partiellement pour supporter un transducteur électro-acoustique (5) et assurer le couplage électrique avec la première électrode (6) dudit transducteur, un circuit imprimé (9) situé à l'intérieur de la pièce d'horlogerie comprenant l'électronique de commande et les bornes de sortie (10) d'un signal électrique de fréquence acoustique et un dispositif de liaison électrique comportant deux amenées conductrices (11) arrangées la première pour entrer en contact avec ladite décoration métallisée (4), la seconde pour entrer en contact avec la seconde électrode (7) dudit transducteur, caractérisée par le fait que les deux amenées conductrices (11) comprennent chacune un tenon arrangé pour traverser 1e cadran sous la décoration, la première extrémité dudit tenon étant soudée à l'une desdites bornes de sortie (10) et la seconde extrémité recevant, une fois le cadran en place, une lame élastique (13) susceptible d'entrer en contact électrique, la première avec ladite décoration et la seconde avec ladite seconde électrode, quand on introduit le mouvement dans la boîte de la pièce d'horlogerie.1. Electronic timepiece comprising at least analog display means, the hands (18) of which are located between a dial (1) and a crystal (3) carrying on its internal face a metallic decoration (4) covering it partially for supporting an electro-acoustic transducer (5) and ensuring the electrical coupling with the first electrode (6) of said transducer, a printed circuit (9) located inside the timepiece comprising the control electronics and the output terminals (10) of an electrical acoustic frequency signal and an electrical connection device comprising two conductive leads (11) arranged the first to come into contact with said metallized decoration (4), the second to come into contact with the second electrode (7) of said transducer, characterized in that the two conductive leads (11) each comprise a stud arranged to pass through the dial under the decoration, the first end of said tenon being welded to one of said output terminals (10) and the second end receiving, once the dial in place, an elastic blade (13) capable of coming into electrical contact, the first with said decoration and the second with said second electrode, when the movement is introduced into the case of the timepiece. 2. Pièce d'horlogerie selon la revendication 1, caractérisée par le fait que ladite lame est rivée sur un tube (15) ajusté à frottement gras sur ladite seconde extrémité (14) du tenon.2. Timepiece according to claim 1, characterized in that said blade is riveted on a tube (15) adjusted to greasy friction on said second end (14) of the stud. 3. Pièce d'_horlogerie selon la revendication 2, caractérisée par le fait que ladite lame est en bronze au béryllium doré.3. timepiece according to claim 2, characterized in that said blade is made of gilded beryllium bronze.
EP81104110A 1980-06-04 1981-05-29 Electronic time piece including an electro-acoustic transducer Expired EP0041245B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8012715 1980-06-04
FR8012715A FR2484102A1 (en) 1980-06-04 1980-06-04 ELECTRONIC WATCH PIECE HAVING AN ELECTRO-ACOUSTIC TRANSDUCER

Publications (2)

Publication Number Publication Date
EP0041245A1 true EP0041245A1 (en) 1981-12-09
EP0041245B1 EP0041245B1 (en) 1985-02-06

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US (1) US4523856A (en)
EP (1) EP0041245B1 (en)
JP (1) JPS5748681A (en)
DE (1) DE3168746D1 (en)
FR (1) FR2484102A1 (en)
HK (1) HK49890A (en)

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US4523856A (en) 1985-06-18
FR2484102B1 (en) 1984-10-05
EP0041245B1 (en) 1985-02-06
HK49890A (en) 1990-07-08
DE3168746D1 (en) 1985-03-21
JPS5748681A (en) 1982-03-20
FR2484102A1 (en) 1981-12-11
JPS6253072B2 (en) 1987-11-09

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