EP0798614A1 - Back cover for watch case, watch provided with the same and piece of jewellery - Google Patents

Back cover for watch case, watch provided with the same and piece of jewellery Download PDF

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Publication number
EP0798614A1
EP0798614A1 EP96810194A EP96810194A EP0798614A1 EP 0798614 A1 EP0798614 A1 EP 0798614A1 EP 96810194 A EP96810194 A EP 96810194A EP 96810194 A EP96810194 A EP 96810194A EP 0798614 A1 EP0798614 A1 EP 0798614A1
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EP
European Patent Office
Prior art keywords
watch
watch case
wrist
ribs
face
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Withdrawn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
EP96810194A
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German (de)
French (fr)
Inventor
Roland Prétat
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.)
Pont Saint-Germain SA
Pont Saint Germain SA
Original Assignee
Pont Saint-Germain SA
Pont Saint Germain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Pont Saint-Germain SA, Pont Saint Germain SA filed Critical Pont Saint-Germain SA
Priority to EP96810194A priority Critical patent/EP0798614A1/en
Publication of EP0798614A1 publication Critical patent/EP0798614A1/en
Withdrawn legal-status Critical Current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
    • G04B37/00—Cases
    • G04B37/0008—Cases for pocket watches and wrist watches
    • G04B37/005—Cases for pocket watches and wrist watches with cover or protection device which can be completely removed, either by lifting off or by sliding, or by turning (protection covers, protection cases also against humidity)

Definitions

  • the present invention relates to a case for a watch case, a watch equipped with said case, and also applies to jewelry. Subsequently, most of the examples will however relate to the case of the watch and the case-back.
  • Patent application FR2 201 852 as well as the corresponding certificate of addition application FR2 234 881 describe a cup which adapts to the bottom of the watch, so as to provide a ventilation space between the bottom of the cup and the the back of the watch.
  • the purpose of this cup is to prevent the sweat formed on the surface of the skin from damaging the housing or the watch mechanism.
  • this device does not provide any solution to the allergy problem or to that of the feeling of grip, since the user's wrist is in direct contact with the bottom of the cup.
  • the object of the present invention is to provide an improved watch case back, a watch comprising said improved back, or an improved piece of jewelry.
  • the invention also aims to solve the problems mentioned with the devices of the prior art.
  • the invention also aims to provide improvements in terms of ergonomics, hygiene, aesthetics or the cost of manufacturing the base for a watch case, for example.
  • FIGS. 1a to 1c A first variant of the base for a watch case according to the invention is illustrated in FIGS. 1a to 1c.
  • Figure 1a illustrates a half-section of the bottom 1 along the axis A-A in Figure 1b.
  • FIG. 1b represents a bottom view of the bottom for a watch case, that is to say a view of the external part of the bottom 1 from the side of the wrist, in a scale different from that used for FIG.
  • Figure 1c shows a sectional view through the assembly of a watch 2 provided with a bottom 1 for watch case according to the invention.
  • the watch 2 is provided by way of example of horns 3 and of a bracelet 4 surrounding the wrist 8 shown very schematically.
  • the strap 4, which can be of any known type, is represented diagrammatically by its two ends close to the watch.
  • the bottom 1 is provided with ribs 10, 6 in number and parallel in this preferred example.
  • the ribs are each provided with a through longitudinal opening 12 and can for example be constituted by tubes fixed for example by welding inside grooves machined in the thickness of the bottom.
  • Side windows 11 are formed at regular intervals in the ribs 10, so as to communicate with the longitudinal opening 12.
  • the windows 11 can be obtained simply by drilling the tubes constituting the grooves.
  • the windows 11 are machined by in-line milling of several ribs side by side. It is thus possible to machine in a single operation several windows, and to obtain an aesthetic alignment of the windows 11 on the different ribs 10.
  • the underside of the bottom is preferably carefully polished to avoid any roughness or sharpness.
  • the bottom is preferably closed by pressure.
  • the invention is however adaptable without difficulty to any type of background, for example to threaded bottoms or to bottoms fixed by screws, or even to watches having an integrated back.
  • Sealing means for example seals, can be provided according to techniques well known to those skilled in the art.
  • the bottom 1 can be made of any known material, for example steel, plastic, silver, titanium or gold.
  • a bactericidal or anti-allergic material will be chosen, for example one of the materials mentioned for this use in the above patents or also medical 316L or 316L stainless steel.
  • the bottom can also be made of steel coated with silver by galvanic treatment; to avoid the proliferation of bacteria as much as possible, it is preferable to cover the inside of the tubes in the same way.
  • the tubes 10 can also be entirely made of silver welded to a steel bottom.
  • the bottom 1 is in contact with the wrist 8 only through the lower end of the projecting ribs 10.
  • the total bearing surface of the bottom 1 against the wrist is therefore much smaller to the total surface of the bottom face 6 of the bottom. Air can thus circulate in the interstices 7 between said lower face 6 and the wrist 8, allowing the sweat to evaporate and the wrist to remain dry. Air and sweat can also enter through the side windows 11 and escape through the openings 12 in the ribs. The openings 12 therefore act as drains to remove sweat.
  • the absence of humidity obtained thanks to this good ventilation makes it possible on the one hand to prevent the multiplication of bacteria, and on the other hand to imitate the decomposition of Nickel. The risk of itching, redness or allergies is therefore considerably reduced.
  • the opening 12 in the ribs may clog, it is important to be able to clean them. For this reason, all the ribs 10 are open at both ends, which makes it possible to easily clean the longitudinal openings 12 by introducing a rod or a pin.
  • the watch can for example be delivered with a cleaning rod or pin embedded in one of the openings 10 and which can be pulled out to clean all the other openings.
  • Figures 2a and 2b show a second variant of the base for the watch case according to the invention.
  • the lower face 6 of the bottom comprises, instead of prominent ribs, recessed grooves 20, parallel and regularly spaced in this example.
  • the grooves 20 pass through the bottom surface 6 of the bottom 1 from end to end, so as to allow ventilation of the gap 7 between the wrist 8 and the bottom 1 from the outside and to evacuate the sweat out of this gap.
  • This variant is particularly simple to machine, but requires a thicker base and is therefore especially suitable for sports watches for example, for which there is no attempt to minimize the thickness.
  • the support surface of the bottom 1 against the skin although greater than that which can be obtained with the variants discussed in relation to FIG. 1, is also significantly less than the total surface of the lower face 6 of the bottom.
  • the bearing surface 6 represents at most 90 percent of the total surface of the bottom face 6 of the bottom, preferably however 80 or even 60 percent or much less.
  • Figures 3a and 3b show a third variant of the base for the watch case according to the invention.
  • the ribs prominent 30 are arranged in a star rather than in parallel lines as in the variants discussed in connection with Figure 1.
  • This arrangement is particularly advantageous when the case 1 is fixed to the watch case 1 by pivoting it, for example by threading peripheral; Indeed, the star pattern allows a more aesthetic symmetrical arrangement when the base is screwed in an intermediate position.
  • the side windows 31 communicating with the longitudinal opening 32 are machined by drilling, but machining of square windows by milling is naturally also possible.
  • Figures 4a and 4b show a fourth variant of the bottom for a watch case according to the invention.
  • the ribs are formed by protruding bosses 40.
  • the bumpy bottom is in the figure given by way of example consisting of a plate machined separately 41, provided with a large amount of bosses 40, and attached to the bottom 1.
  • the plate 41 and the bottom 1 can be in the same material or in a different material.
  • This solution also allows excellent ventilation of the gap 7 between the wrist and the watch, and is on the other hand easier to clean than the previous variants. It is also also well suited to funds fixed by peripheral screwing, because of the large number of axes of symmetry that the plate 40 has.
  • the support surface of the bottom 1 against the wrist is significantly smaller than the total surface of the lower face 6 of the bottom.
  • this variant is more difficult to produce depending on the technology and the materials due to the problem of polishing the bosses 40.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adornments (AREA)

Abstract

The base (1) of the watch (2) has a lower face (6) in contact with the skin such that the pressure surface of the base against the skin (8) is clearly less than the total surface area of the interior face. In order to achieve this one or several interstices are created between the wrist (8) and the base face (6) of the watch when it is worn. The interstices (7) are arranged so that they communicate with external air so that wrist perspiration can evaporate.

Description

La présente invention concerne un fond pour boîte de montre, une montre équipée dudit fond, et s'applique aussi à des bijoux. Par la suite, la plupart des exemples se rapporteront toutefois au cas de la montre et du fond pour boîte de montre.The present invention relates to a case for a watch case, a watch equipped with said case, and also applies to jewelry. Subsequently, most of the examples will however relate to the case of the watch and the case-back.

De nombreuses personnes supportent mal le contact permanent du fond de la montre, ou de bracelets, sur la peau. Notamment, la sensation que la montre colle au poignet est ressentie désagréablement. Ce sentiment d'adhérence est dû à une pellicule de transpiration qui se forme entre la montre et le poignet. Il en résulte une multiplication peu hygiénique des bactéries, provoquant un salissement rapide de la montre et une mauvaise odeur. La sueur peut de surcroît attaquer par acidité le métal utilisé pour le fond de la montre, et pénètre même parfois à l'intérieur du boîtier, entraînant une corrosion et un vieillissement de la montre.Many people do not tolerate the permanent contact of the back of the watch, or of bracelets, on the skin. In particular, the sensation that the watch sticks to the wrist is unpleasant. This feeling of grip is due to a film of perspiration that forms between the watch and the wrist. This results in an unhygienic multiplication of bacteria, causing the watch to get dirty quickly and a bad smell. Sweat can also attack the metal used for the back of the watch by acidity, and sometimes even penetrates inside the case, causing corrosion and aging of the watch.

En outre, beaucoup de personnes sont sujettes à des allergies aux bactéries ou au nickel libéré par la décomposition de l'acier utilisé pour le fond de la montre. Il en résulte une fragilisation du derme protecteur et des rougeurs locales, des irritations voire des infections et des eczémas.In addition, many people are prone to allergies to bacteria or to the nickel released by the decomposition of the steel used for the back of the watch. This results in a weakening of the protective dermis and local redness, irritation or even infections and eczema.

Ces problèmes sont bien connus et de nombreuses solutions ont déjà été proposées pour tenter de les éviter. Ces solutions consistent souvent en des choix particuliers de matériaux pour le fond de la montre, comme dans les documents de brevet FR2693636, EP640695, US4439499 ou SU1811632 par exemple. Toutes sortes de matériaux plus ou moins compatibles avec la peau humaine ont ainsi été développées. Les boîtes de montres en or, en argent ou en titane par exemple sont généralement très bien tolérées. Toutefois, même le matériau le mieux toléré n'empêche pas les problèmes mentionnés de sensation d'adhérence de la montre et d'odeurs désagréables.These problems are well known and many solutions have already been proposed in an attempt to avoid them. These solutions often consist of particular choices of materials for the back of the watch, as in patent documents FR2693636, EP640695, US4439499 or SU1811632 for example. All kinds of materials more or less compatible with human skin have thus been developed. Watch boxes made of gold, silver or titanium for example are generally very well tolerated. However, even the best tolerated material does not prevent the mentioned problems of watch grip and unpleasant odors.

La demande de brevet FR2 201 852 ainsi que la demande de certificat d'addition correspondante FR2 234 881 décrivent une coupelle qui s'adapte au fond de la montre, de manière à ménager un espace de ventilation entre le fond de la coupe\le et le fond de la montre. Le but de cette coupelle est d'éviter que la sueur formée à la surface de la peau n'endommage le boîtier ou le mécanisme de la montre. Ce dispositif n'apporte toutefois aucune solution au problème d'allergie ni à celui du sentiment d'adhérence, puisque le poignet de l'utilisateur est en contact direct avec le fond de la coupelle.Patent application FR2 201 852 as well as the corresponding certificate of addition application FR2 234 881 describe a cup which adapts to the bottom of the watch, so as to provide a ventilation space between the bottom of the cup and the the back of the watch. The purpose of this cup is to prevent the sweat formed on the surface of the skin from damaging the housing or the watch mechanism. However, this device does not provide any solution to the allergy problem or to that of the feeling of grip, since the user's wrist is in direct contact with the bottom of the cup.

Le document GB2 255 894 décrit un bracelet de montre en plastique permettant de réduire les désagréments dus à la transpiration. Ce document ne propose aucune solution au problème de la transpiration entre le poignet et le fond de la montre.Document GB2 255 894 describes a plastic watch strap making it possible to reduce the inconvenience due to perspiration. This document offers no solution to the problem of perspiration between the wrist and the back of the watch.

Le but de la présente invention est de proposer un fond pour boîte de montre amélioré, une montre comportant ledit fond amélioré, ou un bijou amélioré.The object of the present invention is to provide an improved watch case back, a watch comprising said improved back, or an improved piece of jewelry.

De préférence, l'invention vise aussi à résoudre les problèmes mentionnés des dispositifs de l'art antérieur.Preferably, the invention also aims to solve the problems mentioned with the devices of the prior art.

De préférence, l'invention vise aussi à apporter des améliorations quant à l'ergonomie, à l'hygiène, à l'esthétique ou au coût de fabrication du fond pour boîte de montre par exemple.Preferably, the invention also aims to provide improvements in terms of ergonomics, hygiene, aesthetics or the cost of manufacturing the base for a watch case, for example.

Plusieurs variantes de la présente invention sont décrites par la suite à titre d'exemple uniquement et illustrées à l'aide des figures suivantes:

  • Les figures 1a et 1b illustrent respectivement une coupe partielle et une vue de dessous d'un fond pour boîte de montre selon une première variante de la présente invention.
  • La figure 1c illustre une vue de côté d'une montre munie d'un fond pour boîte de montre selon la première variante de la présente invention.
  • Les figures 2a et 2b illustrent respectivement une coupe partielle et une vue de dessous d'un fond pour boîte de montre selon une deuxième variante de la présente invention.
  • Les figures 3a et 3b illustrent respectivement une coupe partielle et une vue de dessous d'un fond pour boîte de montre selon une troisième variante de la présente invention.
  • Les figures 4a et 4b illustrent respectivement une coupe partielle et une vue de dessous d'un fond pour boîte de montre selon une quatrième variante de la présente invention.
Several variants of the present invention are described below by way of example only and illustrated with the following figures:
  • Figures 1a and 1b respectively illustrate a partial section and a bottom view of a bottom for watch case according to a first variant of the present invention.
  • FIG. 1c illustrates a side view of a watch provided with a bottom for a watch case according to the first variant of the present invention.
  • FIGS. 2a and 2b respectively illustrate a partial section and a bottom view of a bottom for a watch case according to a second variant of the present invention.
  • Figures 3a and 3b respectively illustrate a partial section and a bottom view of a bottom for watch case according to a third variant of the present invention.
  • FIGS. 4a and 4b respectively illustrate a partial section and a bottom view of a bottom for a watch case according to a fourth variant of the present invention.

Une première variante de fond pour boîte de montre selon l'invention est illustrée sur les figures 1a à 1c. La figure 1a illustre une demi-coupe du fond 1 selon l'axe A-A sur la figure 1b. La figure 1b représente une vue de dessous du fond pour boîte de montre, c'est à dire une vue de la partie externe du fond 1 du côté du poignet, dans une échelle différente de celle utilisée pour la figure 1a. La figure 1c représente une vue en coupe à travers l'ensemble d'une montre 2 munie d'un fond 1 pour boîte de montre selon l'invention.A first variant of the base for a watch case according to the invention is illustrated in FIGS. 1a to 1c. Figure 1a illustrates a half-section of the bottom 1 along the axis A-A in Figure 1b. FIG. 1b represents a bottom view of the bottom for a watch case, that is to say a view of the external part of the bottom 1 from the side of the wrist, in a scale different from that used for FIG. Figure 1c shows a sectional view through the assembly of a watch 2 provided with a bottom 1 for watch case according to the invention.

Sur la figure 1c, la montre 2 est munie à titre d'exemple de cornes 3 et d'un bracelet 4 entourant le poignet 8 représenté très schématiquement. Le bracelet 4, qui peut être de n'importe quel type connu, est représenté schématiquement par ses deux extrémités proches de la montre.In FIG. 1c, the watch 2 is provided by way of example of horns 3 and of a bracelet 4 surrounding the wrist 8 shown very schematically. The strap 4, which can be of any known type, is represented diagrammatically by its two ends close to the watch.

Le fond 1 est muni de nervures 10, au nombre de 6 et parallèles dans cet exemple préférentiel. Les nervures sont chacune munies d'une ouverture longitudinale 12 traversante et peuvent par exemple être constituées par des tubes fixés par exemple par soudage à l'intérieur de rainures usinées dans l'épaisseur du fond.The bottom 1 is provided with ribs 10, 6 in number and parallel in this preferred example. The ribs are each provided with a through longitudinal opening 12 and can for example be constituted by tubes fixed for example by welding inside grooves machined in the thickness of the bottom.

Des fenêtres latérales 11 sont ménagées à intervalles réguliers dans les nervures 10, de manière à communiquer avec l'ouverture longitudinale 12. Les fenêtres 11 peuvent être obtenues simplement par perçage des tubes constituant les rainures. De préférence toutefois, les fenêtres 11 sont usinées par fraisage en ligne de plusieurs nervures côte-à-côte. Il est ainsi possible d'usiner en une seule opération plusieurs fenêtres, et d'obtenir un alignement esthétique des fenêtres 11 sur les différentes nervures 10. Après soudage des tubes 10 et usinage des fenêtres 11, la face inférieure du fond est de préférence soigneusement polie pour éviter toute aspérité ou tout tranchant.Side windows 11 are formed at regular intervals in the ribs 10, so as to communicate with the longitudinal opening 12. The windows 11 can be obtained simply by drilling the tubes constituting the grooves. Preferably, however, the windows 11 are machined by in-line milling of several ribs side by side. It is thus possible to machine in a single operation several windows, and to obtain an aesthetic alignment of the windows 11 on the different ribs 10. After welding of the tubes 10 and machining of windows 11, the underside of the bottom is preferably carefully polished to avoid any roughness or sharpness.

Dans cet exemple, le fond se ferme de préférence par pression. L'invention est cependant adaptable sans difficultés à n'importe quel type de fond, par exemple à des fonds filetés ou à des fonds fixés par vis, ou même à des montres comportant un fond intégré. Des moyens d'étanchéité, par exemple des joints, peuvent être prévus selon des techniques bien connues de l'homme du métier.In this example, the bottom is preferably closed by pressure. The invention is however adaptable without difficulty to any type of background, for example to threaded bottoms or to bottoms fixed by screws, or even to watches having an integrated back. Sealing means, for example seals, can be provided according to techniques well known to those skilled in the art.

Le fond 1 peut être réalisée en n'importe quelle matière connue, par exemple en acier, en plastique, en argent, en titane ou en or. De préférence toutefois, on choisira un matériau bactéricide ou anti-allergique, par exemple un des matériaux mentionnés pour cet usage dans les brevets ci-dessus ou encore de l'inox 316L ou 316L médical. Le fond peut aussi être en acier recouvert d'argent par traitement galvanique; pour éviter au maximum la prolifération des bactéries, il est préférable de recouvrir de la même manière également l'intérieur des tubes. Les tubes 10 peuvent aussi être entièrement en argent soudé sur un fond en acier.The bottom 1 can be made of any known material, for example steel, plastic, silver, titanium or gold. Preferably, however, a bactericidal or anti-allergic material will be chosen, for example one of the materials mentioned for this use in the above patents or also medical 316L or 316L stainless steel. The bottom can also be made of steel coated with silver by galvanic treatment; to avoid the proliferation of bacteria as much as possible, it is preferable to cover the inside of the tubes in the same way. The tubes 10 can also be entirely made of silver welded to a steel bottom.

Comme on le voit particulièrement sur la figure 1c, le fond 1 n'est en contact avec le poignet 8 que par l'extrémité inférieure des nervures en saillie 10. La surface d'appui totale du fond 1 contre le poignet est donc nettement inférieure à la surface totale de la face inférieure 6 du fond. De l'air peut ainsi circuler dans les interstices 7 entre ladite face inférieure 6 et le poignet 8, permettant à la sueur de s'évaporer et au poignet de rester sec. L'air et la sueur peuvent également pénétrer par les fenêtres latérales 11 et s'échapper par les ouvertures 12 dans les nervures. Les ouvertures 12 agissent donc comme des drains pour éliminer la sueur. L'absence d'humidité obtenue grâce à cette bonne ventilation permet d'une part de prévenir la multiplication des bactéries, et d'autre part de imiter la décomposition du Nickel. Le risque de démangeaisons, de rougeurs ou d'allergies est donc considérablement réduit.As can be seen particularly in FIG. 1c, the bottom 1 is in contact with the wrist 8 only through the lower end of the projecting ribs 10. The total bearing surface of the bottom 1 against the wrist is therefore much smaller to the total surface of the bottom face 6 of the bottom. Air can thus circulate in the interstices 7 between said lower face 6 and the wrist 8, allowing the sweat to evaporate and the wrist to remain dry. Air and sweat can also enter through the side windows 11 and escape through the openings 12 in the ribs. The openings 12 therefore act as drains to remove sweat. The absence of humidity obtained thanks to this good ventilation makes it possible on the one hand to prevent the multiplication of bacteria, and on the other hand to imitate the decomposition of Nickel. The risk of itching, redness or allergies is therefore considerably reduced.

L'ouverture 12 dans les nervures risquant de s'encrasser, il est important de pouvoir les nettoyer. Pour cette raison, toutes les nervures 10 sont ouvertes aux deux bouts, ce qui permet de pouvoir nettoyer facilement les ouvertures longitudinales 12 en introduisant une tige ou une épingle. La montre peut par exemple être livrée avec une tige ou une épingle de nettoyage encastrée dans l'une des ouvertures 10 et pouvant en être ressortie pour nettoyer toutes les autres ouvertures.The opening 12 in the ribs may clog, it is important to be able to clean them. For this reason, all the ribs 10 are open at both ends, which makes it possible to easily clean the longitudinal openings 12 by introducing a rod or a pin. The watch can for example be delivered with a cleaning rod or pin embedded in one of the openings 10 and which can be pulled out to clean all the other openings.

Dans une variante économique non représentée, on peut renoncer aux ouvertures longitudinales 10 et aux fenêtres latérales 11 et usiner des nervures 10 pleines. On perd alors l'avantage de la ventilation à travers les ouvertures 12, mais on conserve avantageusement les interstices entre le poignet 8 et le fond 1 de la montre. Cette variante permet une fabrication plus aisée et est donc mieux adaptée à des boîtes de montre devant être fabriquées à faible coût.In an economic variant not shown, it is possible to dispense with the longitudinal openings 10 and the side windows 11 and machine full ribs 10. The advantage of ventilation is then lost through the openings 12, but the interstices between the wrist 8 and the back 1 of the watch are advantageously retained. This variant allows easier manufacturing and is therefore better suited to watch cases that must be manufactured at low cost.

Les figures 2a et 2b représentent une deuxième variante de fond pour boîte de montre selon l'invention. Dans cette variante, la face inférieure 6 du fond comporte, au lieu de nervures proéminentes, des rainures en retrait 20, parallèles et régulièrement espacées dans cet exemple. Les rainures 20 traversent la surface inférieure 6 du fond 1 de bout en bout, de manière à permettre une ventilation de l'interstice 7 entre le poignet 8 et le fond 1 depuis l'extérieur et à évacuer la sueur hors de cet interstice.Figures 2a and 2b show a second variant of the base for the watch case according to the invention. In this variant, the lower face 6 of the bottom comprises, instead of prominent ribs, recessed grooves 20, parallel and regularly spaced in this example. The grooves 20 pass through the bottom surface 6 of the bottom 1 from end to end, so as to allow ventilation of the gap 7 between the wrist 8 and the bottom 1 from the outside and to evacuate the sweat out of this gap.

Cette variante est particulièrement simple à usiner, mais nécessite un fond plus épais et est par conséquent surtout adaptée à des montres sportives par exemple, pour lesquelles on ne cherche pas à minimiser l'épaisseur. La surface d'appui du fond 1 contre la peau, bien que supérieure à celle que l'on peut obtenir avec les variantes discutées en relation avec la figure 1, est également nettement inférieure à la surface totale de la face inférieure 6 du fond. Ainsi, selon la largeur et le nombre des rainures 20, la surface d'appui 6 représente au maximum 90 pour-cent de la surface totale de la face inférieure 6 du fond, de préférence toutefois 80 voire 60 pour-cent ou beaucoup moins.This variant is particularly simple to machine, but requires a thicker base and is therefore especially suitable for sports watches for example, for which there is no attempt to minimize the thickness. The support surface of the bottom 1 against the skin, although greater than that which can be obtained with the variants discussed in relation to FIG. 1, is also significantly less than the total surface of the lower face 6 of the bottom. Thus, depending on the width and the number of grooves 20, the bearing surface 6 represents at most 90 percent of the total surface of the bottom face 6 of the bottom, preferably however 80 or even 60 percent or much less.

Les figures 3a et 3b représentent une troisième variante de fond pour boîte de montre selon l'invention. Dans cette variante, les nervures proéminentes 30 sont disposées en étoile plutôt qu'en lignes parallèles comme sur les variantes discutées en relation avec la figure 1. Cette disposition est particulièrement avantageuse lorsque le fond 1 est fixé à la boîte de montre 1 en le pivotant, par exemple par un filetage périphérique; en effet, le motif en étoile permet une disposition symétrique plus esthétique lorsque le fond est vissé dans une position intermédiaire. Sur la figure, les fenêtres latérales 31 communiquant avec l'ouverture longitudinale 32 sont usinées par perçage, mais un usinage de fenêtres carrées par fraisage est naturellement aussi possible.Figures 3a and 3b show a third variant of the base for the watch case according to the invention. In this variant, the ribs prominent 30 are arranged in a star rather than in parallel lines as in the variants discussed in connection with Figure 1. This arrangement is particularly advantageous when the case 1 is fixed to the watch case 1 by pivoting it, for example by threading peripheral; Indeed, the star pattern allows a more aesthetic symmetrical arrangement when the base is screwed in an intermediate position. In the figure, the side windows 31 communicating with the longitudinal opening 32 are machined by drilling, but machining of square windows by milling is naturally also possible.

D'autres dispositions des nervures sont naturellement à la portée de l'homme du métier, par exemple des dispositions en cercles concentriques, en quadrillage, en nid d'abeille, etc. On donnera toutefois la préférence à des configurations qui permettent à l'air externe de s'immiscer facilement dans tous les interstices 7 entre le poignet et le fond de la montre de façon à ce que la sueur sur le poignet puisse s'évaporer.Other arrangements of the ribs are naturally within the reach of those skilled in the art, for example arrangements in concentric circles, grid, honeycomb, etc. However, preference will be given to configurations which allow external air to easily penetrate into all the interstices 7 between the wrist and the back of the watch so that the sweat on the wrist can evaporate.

Les figures 4a et 4b représentent une quatrième variante de fond pour boîte de montre selon l'invention. Dans cette variante, les nervures sont constituées par des bosselages proéminents 40. Le fond bosselé est dans la figure donnée à titre d'exemple constitué d'une plaque usinée séparément 41, munie d'une grande quantité de bosses 40, et rapportée sur le fond 1. La plaque 41 et le fond 1 peuvent être dans la même matière ou dans un matériau différent. Cette solution permet également une excellente ventilation de l'interstice 7 entre le poignet et la montre, et est d'autre part plus facile à nettoyer que les variantes précédentes. Elle est en outre également bien adaptée à des fonds fixés par vissage périphérique, en raison du grand nombre d'axes de symétrie que la plaque 40 comporte. Comme dans les variantes précédentes, la surface d'appui du fond 1 contre le poignet est nettement inférieure à la surface totale de la face inférieure 6 du fond. Cependant, cette variante est selon la technologie et les matériaux plus difficile à produire en raison du problème du polissage des bosselages 40.Figures 4a and 4b show a fourth variant of the bottom for a watch case according to the invention. In this variant, the ribs are formed by protruding bosses 40. The bumpy bottom is in the figure given by way of example consisting of a plate machined separately 41, provided with a large amount of bosses 40, and attached to the bottom 1. The plate 41 and the bottom 1 can be in the same material or in a different material. This solution also allows excellent ventilation of the gap 7 between the wrist and the watch, and is on the other hand easier to clean than the previous variants. It is also also well suited to funds fixed by peripheral screwing, because of the large number of axes of symmetry that the plate 40 has. As in the previous variants, the support surface of the bottom 1 against the wrist is significantly smaller than the total surface of the lower face 6 of the bottom. However, this variant is more difficult to produce depending on the technology and the materials due to the problem of polishing the bosses 40.

Toutes les variantes discutées ci-dessus se rapportent à des montres à fond plat. Il est cependant évident que des interstices similaires entre le poignet et le fond peuvent être crées avec des montres à fond bombé pour accompagner la courbure du poignet. En outre, pour éviter toute confusion, il est utile de préciser que lorsque ci-dessus et dans les revendications il est fait référence à la face inférieure du fond, il faut entendre la portion, plane ou éventuellement bombée, de la face externe du fond qui est tournée vers le poignet lorsque la montre est portée.All the variants discussed above relate to flat-bottomed watches. It is however obvious that similar interstices between the wrist and the back can be created with domed watches to accompany the curvature of the wrist. In addition, to avoid any confusion, it is useful to specify that when the above and in the claims reference is made to the underside of the bottom, it is to be understood the portion, flat or possibly curved, of the outer face of the bottom which is turned towards the wrist when the watch is worn.

D'autres manières de construire un fond de boîte de montre selon la partie caractérisante de la revendication 1 peuvent être imaginées par l'homme du métier. Comme indiqué ci-dessus, l'invention s'applique aussi à d'autres objets devant être portés près du corps et provoquant ce problème d'allergies, par exemple à des bracelets larges, à des fermoirs pour montres ou pour colliers, à des médailles, etc...Other ways of constructing a watch case back according to the characterizing part of claim 1 can be imagined by a person skilled in the art. As indicated above, the invention also applies to other objects to be worn close to the body and causing this allergy problem, for example to wide bracelets, to clasps for watches or for necklaces, to medals, etc ...

Claims (13)

Fond (1) pour boîte de montre (2), comprenant une face inférieure (6) tournée vers le poignet lorsque la montre est portée, caractérisé en ce que la surface d'appui dudit fond contre le poignet (8) est nettement inférieure à la surface totale de ladite face inférieure.Bottom (1) for watch case (2), comprising a bottom face (6) facing the wrist when the watch is worn, characterized in that the bearing surface of said bottom against the wrist (8) is significantly less than the total surface of said lower face. Fond (1) pour boîte de montre (2), notamment selon la revendication précédente, caractérisé en ce qu'un ou plusieurs interstices sont crées entre le poignet (8) et ladite face inférieure (6) du fond (1) lorsque la montre est portée, le ou lesdits interstices (7) étant disposés de manière à communiquer avec l'air externe de façon à ce que la sueur sur le poignet puisse s'évaporer.Bottom (1) for watch case (2), in particular according to the preceding claim, characterized in that one or more gaps are created between the wrist (8) and said bottom face (6) of the bottom (1) when the watch is worn, the said interstice (s) (7) being arranged so as to communicate with the external air so that the sweat on the wrist can evaporate. Fond (1) pour boîte de montre (2) selon la revendication 1 ou 2, caractérisé en ce que ladite face inférieure comprend plusieurs nervures (10, 30, 40) en saillie, ladite surface d'appui du fond contre le poignet (8) étant constituée par lesdites nervures (10, 30, 40).Bottom (1) for watch case (2) according to claim 1 or 2, characterized in that said bottom face comprises several projecting ribs (10, 30, 40), said bottom support surface against the wrist (8 ) being constituted by said ribs (10, 30, 40). Fond (1) pour boîte de montre (2) selon la revendication 3, caractérisé en ce qu'une ouverture longitudinale (12, 32) traverse lesdites nervures (10, 30) qui sont en outre munies d'une ou plusieurs fenêtres latérales (11, 31) communiquant avec ladite ouverture longitudinale (12, 32).Bottom (1) for watch case (2) according to claim 3, characterized in that a longitudinal opening (12, 32) passes through said ribs (10, 30) which are further provided with one or more side windows ( 11, 31) communicating with said longitudinal opening (12, 32). Fond (1) pour boîte de montre (2) selon l'une des revendications 3 ou 4, caractérisé en ce qu'il peut être fixé de manière non pivotante à la boîte de montre (2) et en ce que lesdites nervures (10) sont disposées parallèlement les unes aux autres.Bottom (1) for watch case (2) according to one of claims 3 or 4, characterized in that it can be fixed in a non-pivoting manner to the watch case (2) and in that said ribs (10 ) are arranged parallel to each other. Fond (1) pour boîte de montre (2) selon l'une des revendications 3 ou 4, caractérisé en ce qu'il peut être fixé par pas de vis à la boîte de montre (2) et en ce que lesdites nervures (30) sont disposées en étoile.Bottom (1) for watch case (2) according to one of claims 3 or 4, characterized in that it can be fixed by thread to the watch case (2) and in that said ribs (30 ) are arranged in a star. Fond (1) pour boîte de montre (2) selon l'une des revendications 3 à 6, caractérisé en ce sa fabrication implique les opérations successives: - usinage de plusieurs rainures dans ladite face inférieure (6) - fixation par soudage de tubes (10, 30) munis d'une ouverture longitudinale (12, 32) dans lesdites rainures, une portion desdits tubes (10, 30) s'étendant en dehors desdites rainures, - usinage de fenêtres latérales (11, 31) dans ladite portion des tubes (10, 30) s'étendant en dehors desdites rainures, - polissage. Base (1) for watch case (2) according to one of claims 3 to 6, characterized in that its manufacture involves the following operations: - machining of several grooves in said lower face (6) - fixing by welding of tubes (10, 30) provided with a longitudinal opening (12, 32) in said grooves, a portion of said tubes (10, 30) extending outside said grooves, - machining of side windows (11, 31) in said portion of the tubes (10, 30) extending outside said grooves, - polishing. Fond (1) pour boîte de montre (2) selon la revendication précédente, caractérisé en ce que ladite opération d'usinage de fenêtres latérales (11, 31) est effectuée au moyen d'un outil de fraisage permettant de fraiser en une seule opération une fenêtre (11, 31) dans plusieurs tubes (10, 30) côte-à-côte.Bottom (1) for watch case (2) according to the preceding claim, characterized in that said side window machining operation (11, 31) is carried out by means of a milling tool making it possible to mill in a single operation a window (11, 31) in several tubes (10, 30) side by side. Fond (1) pour boîte de montre (2) selon la revendication 1 ou 2, caractérisé en ce qu'il comprend plusieurs rainures (20) dans ladite face inférieure (6) destinées à créer une ventilation entre le fond (1) et le poignet (8).Bottom (1) for watch case (2) according to claim 1 or 2, characterized in that it comprises several grooves (20) in said lower face (6) intended to create ventilation between the bottom (1) and the wrist (8). Fond (1) pour boîte de montre (2) selon la revendication 1 ou 2, caractérisé en ce qu'il comprend dans ladite face inférieure plusieurs bosselages (40) proéminents par rapport à ladite face inférieure (6).Bottom (1) for watch case (2) according to claim 1 or 2, characterized in that it comprises in said lower face several bosses (40) protruding with respect to said lower face (6). Montre (2) comprenant un fond (1) selon l'une des revendications précédentes.Watch (2) comprising a back (1) according to one of the preceding claims. Bijou, tel que bracelet, comportant une large face tournée vers le corps du porteur lorsque le bijou est porté, caractérisé en ce que la surface d'appui dudit bijou contre le corps est nettement inférieure à la surface totale de ladite face tournée vers le corps du porteur.Jewel, such as bracelet, having a large face facing the body of the wearer when the jewel is worn, characterized in that the bearing surface of said jewel against the body is significantly less than the total surface of said face facing the body of the wearer. Bijou selon la revendication précédente, caractérisé en ce que ladite surface du bijou proche du poignet comprend plusieurs nervures en saillie, ladite surface d'appui du bijou contre le corps étant constituée par lesdites nervures.Jewel according to the preceding claim, characterized in that said surface of the jewel close to the wrist comprises several projecting ribs, said surface for supporting the jewel against the body being constituted by said ribs.
EP96810194A 1996-03-27 1996-03-27 Back cover for watch case, watch provided with the same and piece of jewellery Withdrawn EP0798614A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96810194A EP0798614A1 (en) 1996-03-27 1996-03-27 Back cover for watch case, watch provided with the same and piece of jewellery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810194A EP0798614A1 (en) 1996-03-27 1996-03-27 Back cover for watch case, watch provided with the same and piece of jewellery

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Publication Number Publication Date
EP0798614A1 true EP0798614A1 (en) 1997-10-01

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EP96810194A Withdrawn EP0798614A1 (en) 1996-03-27 1996-03-27 Back cover for watch case, watch provided with the same and piece of jewellery

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101859092A (en) * 2010-02-11 2010-10-13 成都峻峰科技开发有限公司 Comfortable watch bottom cap
CN102253641A (en) * 2010-05-17 2011-11-23 成都云杉科技有限公司 Annular radial-type sweat-draining watch case
CN112506023A (en) * 2020-11-30 2021-03-16 南京成米轩商贸有限公司 Energy-concerving and environment-protective type can prevent accumulational mechanical wrist-watch back lid of sweat stain
CN113331810A (en) * 2021-07-14 2021-09-03 西安易朴通讯技术有限公司 Wearable equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2342804A (en) * 1941-03-08 1944-02-29 Albert W Hiller Mounting for wrist watches
FR2389348A1 (en) * 1977-05-02 1978-12-01 Braun Ag
WO1988002996A1 (en) * 1986-10-28 1988-05-05 Nef Automation Ag Plastic watch strap
EP0276701A2 (en) * 1987-01-27 1988-08-03 Giorgio Brizio Covering case for wrist-watches

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2342804A (en) * 1941-03-08 1944-02-29 Albert W Hiller Mounting for wrist watches
FR2389348A1 (en) * 1977-05-02 1978-12-01 Braun Ag
WO1988002996A1 (en) * 1986-10-28 1988-05-05 Nef Automation Ag Plastic watch strap
EP0276701A2 (en) * 1987-01-27 1988-08-03 Giorgio Brizio Covering case for wrist-watches

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101859092A (en) * 2010-02-11 2010-10-13 成都峻峰科技开发有限公司 Comfortable watch bottom cap
CN101859092B (en) * 2010-02-11 2011-10-26 宁波市鄞州千峰机械科技有限公司 Comfortable watch bottom cap
CN102253641A (en) * 2010-05-17 2011-11-23 成都云杉科技有限公司 Annular radial-type sweat-draining watch case
CN102253641B (en) * 2010-05-17 2012-10-03 成都云杉科技有限公司 Annular radial-type sweat-draining watch case
CN112506023A (en) * 2020-11-30 2021-03-16 南京成米轩商贸有限公司 Energy-concerving and environment-protective type can prevent accumulational mechanical wrist-watch back lid of sweat stain
CN113331810A (en) * 2021-07-14 2021-09-03 西安易朴通讯技术有限公司 Wearable equipment
CN113331810B (en) * 2021-07-14 2023-11-03 西安易朴通讯技术有限公司 Wearable equipment

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