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EP0379974B1 - Watch case with a hollow middle part - Google Patents

Watch case with a hollow middle part Download PDF

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Publication number
EP0379974B1
EP0379974B1 EP90100996A EP90100996A EP0379974B1 EP 0379974 B1 EP0379974 B1 EP 0379974B1 EP 90100996 A EP90100996 A EP 90100996A EP 90100996 A EP90100996 A EP 90100996A EP 0379974 B1 EP0379974 B1 EP 0379974B1
Authority
EP
European Patent Office
Prior art keywords
watch case
fact
case according
caseband
crystal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90100996A
Other languages
German (de)
French (fr)
Other versions
EP0379974A1 (en
Inventor
Gaston Gagnebin
Eric Loth
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Omega SA
Original Assignee
Omega SA
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Filing date
Publication date
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Publication of EP0379974A1 publication Critical patent/EP0379974A1/en
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Publication of EP0379974B1 publication Critical patent/EP0379974B1/en
Anticipated expiration legal-status Critical
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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
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/05—Fixed mountings for pocket or wrist watches
    • 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
    • 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
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches

Definitions

  • the present invention relates to a watch case comprising a middle part and a plurality of components together defining a housing intended to receive a watch movement and display means, in which the components comprise a crystal and a back and in which the middle part has a recess opening towards the inside of the box, a first bearing surface cooperating with the glass and a second bearing surface cooperating with the bottom, the first and second surfaces being cylindrical and defining openings in which the glass and the bottom are respectively engaged.
  • Document CH-A-66541 already describes a hollowed-out caseband enclosing a watch movement.
  • This middle part also has a first bearing surface cooperating with a crystal and a second bearing surface cooperating with a bottom. These first and second bearing surfaces are however not cylindrical but conical since the crystal and the bottom are adjusted to the notch on the middle. Furthermore, the movement is held in place in the middle without the help of studs which would take place in the recess of the middle as will appear in the present invention.
  • the middle part of the watch case described in document CH-A-664251 also has a recess opening towards the inside of the case.
  • this middle part is provided with first and second bearing surfaces which are cylindrical and define openings in which the glass and the bottom are respectively engaged.
  • first and second bearing surfaces which are cylindrical and define openings in which the glass and the bottom are respectively engaged.
  • studs arranged in the recess, which leads to difficulties, in particular with regard to the axial and radial attachments of the movement.
  • the watch case according to the invention in addition to having the characteristics given above in the first paragraph, is characterized by the fact that at least three studs integral with the middle part are arranged in the space defined by said recess and are shaped to position axially at least one of said components.
  • the watch case comprises a middle part 1 and a plurality of components comprising a crystal 2 and a base 3.
  • This box is intended to receive a watch movement 17 and means for displaying the time of which only the dial 14 appears here.
  • the middle part 1 has a recess 4 opening towards the inside of the case, a first bearing surface 5 which cooperates with the glass 2 and a second bearing surface 6 which cooperates with the bottom 3.
  • the first and second bearing surface 5 and 6 are cylindrical in this sense that they are directed in the direction of the axis of the box. These bearing surfaces thus define openings in which the glass and the bottom are respectively engaged.
  • each of these studs 7 is shaped to position axially at least one of the components comprising the glass and the bottom.
  • FIG. 2 is an enlargement of the zone II visible in FIG. 1. It recognizes in particular a portion of the middle part 1 and one of the three studs 7 confined inside the recess 4.
  • the stud can be welded into the bottom of the recess, any other means, such as bonding, which can however be envisaged .
  • the watch case presented as an example in FIG. 1 has a round middle and the recess 4 is in the shape of a vault 10 as is clearly seen in FIGS. 2 to 5.
  • This way of doing things is particularly well suited to boxes whose middle is in gold, because it contributes to very significantly decrease the weight of gold and consequently decrease the cost of the watch.
  • the invention could, however, be applied to a form watch with the same advantages indicated above. It will also be noted that the arch-shaped recess contributes to stiffening the middle, more than if it was made without recess.
  • the box is sealed by fittings.
  • the studs 7 were shaped to position axially at least one of the components comprising the glass and the bottom.
  • the stud 7 carries a projection 11 beyond the recess 4 and extending in the direction of movement 17.
  • the axial positioning of the glass 2 is achieved by to an upper batt 12 presented by the projection 11.
  • On this upper batt 12 rests a flange 15 against which the glass 2 rests, the flange serving to ensure a well-defined distance between the dial 14 and the underside of the glass 2 and thus leaving a free space for needles (not shown).
  • the middle part 1 is provided with its pads 7, which pads are preferably arranged at 11 o'clock, at 3 o'clock and at 7 o'clock.
  • the flange 15 is introduced from the top which will come to rest on the upper flaps 12 of the projections 11 of the studs.
  • the annular lining 8 is then introduced and the ice 2 is expelled inside the lining until said ice press the flange, the latter in turn pressing the projection 11.
  • the edge of the ice compresses the gasket 8 against the bearing surface 5 to ensure the watertightness of the watch.
  • the projection 11 of the stud 7 carries a lower battue 13 on which rests a casing circle 16 against which the bottom 3 rests.
  • the casing circle is shaped to hold in place the movement 17, this movement resting in known manner in a housing formed in the casing circle.
  • the movement is fixed to the casing circle by flanges, just as the dial 14 is fixed to the movement by feet of the dial.
  • the movement 17 is introduced with its adjoining circle 16 from the underside of the middle part 1, until the circle 16 comes to rest on the bottom battue 13 of the projection 11.
  • the embodiment shown shows a bottom 3 which is an assembly formed by a ring 20 and a closure plate 21.
  • Ring and plate can be made in one piece or even be attached one on the other by means of glue for example. If the middle part is gold, the plate will also be gold. However, as shown in FIGS. 3 to 5, in order to reduce the weight of gold as much as possible, the plate can be a second lens attached to the ring. The result is a cheap gold box whose precious metal weight can be less than four grams. In this case the goldsmith's punch will be affixed to the middle.
  • the middle 1 carries attachment means 22 of a bracelet held in place by means of pins passing through holes 23.
  • These horns can be made in one piece with the middle or attached afterwards by welding for example.
  • the box provides an opening 18 continued by a bore 19 passing through both the stud 7 and the casing ring 16, which allows the establishment of a setting rod hour, rod which is very conventionally placed in its housing by means of a tube and a seal.
  • the studs 7 are at least three in number to ensure a suitable seat for the components to be assembled. We will preferably choose an opening 10 ° for the stud coinciding with the entry of the rod and 5 ° for the other two.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Table Equipment (AREA)

Abstract

The watch case of this invention includes a caseband (1) hollowed out in the form of a vault (10). Such caseband includes first (5) and second (6) cylindrical support surfaces cooperating respectively with a crystal (2) and a back cover (3). Three blocks (7), unitary with the caseband, are arranged within the hollowed-out vaultlike space. Each block bears a projection (11) extending towards the movement (17) borne by the case, said projection having an upper snap (12) on which rests a flange (15) supporting the crystal and a lower snap (13) on which rests a casing ring (16) on which the back cover bears.

Description

La présente invention concerne une boîte de montre comportant une carrure et une pluralité de composants définissant ensemble un logement destiné à recevoir un mouvement de montre et des moyens d'affichage, dans laquelle les composants comprennent une glace et un fond et dans laquelle la carrure présente un évidement s'ouvrant vers l'intérieur de la boîte, une première surface d'appui coopérant avec la glace et une seconde surface d'appui coopérant avec le fond, les premières et seconde surfaces étant cylindriques et définissant des ouvertures dans lesquelles la glace et le fond sont respectivement engagés.The present invention relates to a watch case comprising a middle part and a plurality of components together defining a housing intended to receive a watch movement and display means, in which the components comprise a crystal and a back and in which the middle part has a recess opening towards the inside of the box, a first bearing surface cooperating with the glass and a second bearing surface cooperating with the bottom, the first and second surfaces being cylindrical and defining openings in which the glass and the bottom are respectively engaged.

Le document CH-A-66541 décrit déjà une carrure évidée enfermant un mouvement de montre. Cette carrure présente également une première surface d'appui coopérant avec une glace et une seconde surface d'appui coopérant avec un fond. Ces première et seconde surfaces d'appui ne sont cependant pas cylindriques mais coniques puisque glace et fond sont ajustés à cran sur la carrure. Par ailleurs le mouvement est maintenu en place dans la carrure sans l'aide de plots qui prendraient place dans l'évidement de la carrure comme cela apparaîtra dans la présente invention. La construction proposée dans le document cité est réservée avant tout à une montre de poche dans laquelle aucune disposition particulière n'est prise pour diminuer l'épaisseur de la montre ou pour réduire au minimum le poids de matière constituant la carrure, comme c'est le cas dans l'invention qui va être décrite, où la carrure peut être réalisée en métal précieux en diminuant autant que faire se peut le poids de ce métal.Document CH-A-66541 already describes a hollowed-out caseband enclosing a watch movement. This middle part also has a first bearing surface cooperating with a crystal and a second bearing surface cooperating with a bottom. These first and second bearing surfaces are however not cylindrical but conical since the crystal and the bottom are adjusted to the notch on the middle. Furthermore, the movement is held in place in the middle without the help of studs which would take place in the recess of the middle as will appear in the present invention. The construction proposed in the cited document is reserved above all for a pocket watch in which no particular provision is made to reduce the thickness of the watch or to minimize the weight of material constituting the middle part, as is the case in the invention which will be described, where the middle part can be made of precious metal while reducing as much as possible the weight of this metal.

La carrure de la boîte de montre décrite dans le document CH-A-664251 présente également un évidement s'ouvrant vers l'intérieur de la boîte. En outre, cette carrure est pourvue de première et seconde surfaces d'appui qui sont cylindriques et définissent des ouvertures dans lesquelles la glace et le fond sont respectivement engagés. Cependant, on ne trouve pas non plus dans cette construction des plots disposés dans l'évidement, ce qui entraîne des difficultés, notamment en ce qui concerne les fixations axiales et radiales du mouvement.The middle part of the watch case described in document CH-A-664251 also has a recess opening towards the inside of the case. In addition, this middle part is provided with first and second bearing surfaces which are cylindrical and define openings in which the glass and the bottom are respectively engaged. However, there are also not in this construction studs arranged in the recess, which leads to difficulties, in particular with regard to the axial and radial attachments of the movement.

Ainsi la boîte de montre selon l'invention, en plus qu'elle comporte les caractéristiques données ci-dessus dans le premier paragraphe, est caractérisée par le fait qu'au moins trois plots solidaires de la carrure sont disposés dans l'espace défini par ledit évidement et sont conformés pour positionner axialement au moins l'un desdits composants.Thus the watch case according to the invention, in addition to having the characteristics given above in the first paragraph, is characterized by the fact that at least three studs integral with the middle part are arranged in the space defined by said recess and are shaped to position axially at least one of said components.

L'invention sera décrite maintenant dans la description qui va suivre, donnée à titre d'exemple non limitatif, en s'aidant du dessin montrant un mode de réalisation et dans lequel :

  • la figure 1 est une vue en perspective montrant la boîte selon l'invention où seule la carrure a été représentée avec un plot caractéristique,
  • la figure 2 est un agrandissement de la zone II visible en figure 1,
  • les figures 3, 4 et 5 sont des coupes selon les lignes III-III, IV-IV et V-V visibles respectivement sur la figure 1 où l'on suppose la boîte de montre entièrement montée.
The invention will now be described in the description which follows, given by way of nonlimiting example, with the aid of the drawing showing an embodiment and in which:
  • FIG. 1 is a perspective view showing the box according to the invention where only the middle part has been shown with a characteristic pad,
  • FIG. 2 is an enlargement of zone II visible in FIG. 1,
  • Figures 3, 4 and 5 are sections along lines III-III, IV-IV and VV visible respectively in Figure 1 where we assume the watch case fully assembled.

On se référera d'abord aux figures 1 et 5. Dans ces figures, la boîte de montre comporte une carrure 1 et une pluralité de composants comprenant une glace 2 et un fond 3. Cette boîte est destinée à recevoir un mouvement de montre 17 et des moyens d'affichage de l'heure dont apparaît ici seulement le cadran 14. Comme on le voit bien en figure 1, la carrure 1 présente un évidement 4 s'ouvrant vers l'intérieur de la boîte, une première surface d'appui 5 qui coopère avec la glace 2 et une seconde surface d'appui 6 qui coopère avec le fond 3. En particulier, et selon une première caractéristique de l'invention les première et seconde surface d'appui 5 et 6 sont cylindriques en ce sens qu'elles sont dirigées dans le sens de l'axe de la boîte. Ces surfaces d'appui définissent ainsi des ouvertures dans lesquelles la glace et le fond sont respectivement engagés. Selon une seconde caractéristique importante de l'invention au moins trois plots 7 sont solidaires de la carrure 1 et sont disposés dans l'espace défini par l'évidement 4. Un seul de ces plots est visible en figure 1, situé environ à 11 heures de la pièce d'horlogerie. Comme cela sera expliqué en détail ci-après, chacun de ces plots 7 est conformé pour positionner axialement au moins l'un des composants comprenant la glace et le fond.Reference will first be made to FIGS. 1 and 5. In these figures, the watch case comprises a middle part 1 and a plurality of components comprising a crystal 2 and a base 3. This box is intended to receive a watch movement 17 and means for displaying the time of which only the dial 14 appears here. As can be seen in FIG. 1, the middle part 1 has a recess 4 opening towards the inside of the case, a first bearing surface 5 which cooperates with the glass 2 and a second bearing surface 6 which cooperates with the bottom 3. In particular, and according to a first characteristic of the invention, the first and second bearing surface 5 and 6 are cylindrical in this sense that they are directed in the direction of the axis of the box. These bearing surfaces thus define openings in which the glass and the bottom are respectively engaged. According to a second important characteristic of the invention at least three studs 7 are integral with the middle part 1 and are arranged in the space defined by the recess 4. Only one of these studs is visible in FIG. 1, located approximately at 11 o'clock of the timepiece. As will be explained in detail below, each of these studs 7 is shaped to position axially at least one of the components comprising the glass and the bottom.

La figure 2 est un agrandissement de la zone II visible en figure 1. On y reconnaît en particulier une portion de la carrure 1 et un des trois plots 7 confiné à l'intérieur de l'évidement 4. Le plot 7, soit peut être rapporté dans l'évidement 4, soit peut être fait d'une pièce avec la carrure 1. Dans le premier cas, le plot peut être soudé dans le fond de l'évidement, tout autre moyen, comme le collage, pouvant cependant être envisagé. Dans le second cas, on partira d'une carrure pleine sans évidement et, au moyen d'une fraise présentant un profil semblable à celui de l'évidement, on usinera la carrure en éloignant la fraise aux trois endroits où les plots doivent être présents.FIG. 2 is an enlargement of the zone II visible in FIG. 1. It recognizes in particular a portion of the middle part 1 and one of the three studs 7 confined inside the recess 4. The stud 7, either can be reported in the recess 4, or can be made in one piece with the middle part 1. In the first case, the stud can be welded into the bottom of the recess, any other means, such as bonding, which can however be envisaged . In the second case, we will start from a full middle without recess and, by means of a cutter having a profile similar to that of the recess, we will machine the middle by moving the cutter away from the three places where the studs must be present.

La boîte de montre présentée en exemple en figure 1 présente une carrure ronde et l'évidement 4 est en forme de voûte 10 comme cela apparaît bien dans les figures 2 à 5. Cette façon de faire est particulièrement bien adaptée aux boîtes dont la carrure est en or, car elle contribue à diminuer de manière très sensible le poids de l'or et à diminuer par voie de conséquence le coût de la montre. L'invention pourrait cependant s'appliquer à une montre de forme avec les mêmes avantages signalés ci-dessus. On signalera aussi que l'évidement en forme de voûte contribue à rigidifier la carrure, plus que si elle était faite sans évidement.The watch case presented as an example in FIG. 1 has a round middle and the recess 4 is in the shape of a vault 10 as is clearly seen in FIGS. 2 to 5. This way of doing things is particularly well suited to boxes whose middle is in gold, because it contributes to very significantly decrease the weight of gold and consequently decrease the cost of the watch. The invention could, however, be applied to a form watch with the same advantages indicated above. It will also be noted that the arch-shaped recess contributes to stiffening the middle, more than if it was made without recess.

Comme on peut le voir aux figures 3, 4 et 5, l'étanchéité de la boîte est assurée par des garnitures. A cet effet, on dispose une première garniture 8 entre la glace 2 et la première surface d'appui 5 et une seconde garniture 9 entre le fond 3 et la seconde surface d'appui 6.As can be seen in Figures 3, 4 and 5, the box is sealed by fittings. To this end, there is a first lining 8 between the glass 2 and the first bearing surface 5 and a second lining 9 between the bottom 3 and the second bearing surface 6.

On a déjà dit que les plots 7 étaient conformés pour positionner axialement au moins l'un des composants comprenant la glace et le fond.It has already been said that the studs 7 were shaped to position axially at least one of the components comprising the glass and the bottom.

Dans ce but, et si l'on se réfère aux figures 2, 4 et 5 le plot 7 porte une saillie 11 dépassant l'évidement 4 et s'étendant en direction du mouvement 17. Le positionnement axial de la glace 2 est réalisé grâce à une battue supérieure 12 présentée par la saillie 11. Sur cette battue supérieure 12 repose un réhaut 15 contre lequel s'appuie la glace 2, le réhaut servant à assurer une distance bien définie entre le cadran 14 et le dessous de la glace 2 et à laisser ainsi un espace libre pour des aiguilles (non représentées). Pour monter la glace, on utilise la carrure 1 munie de ses plots 7, lesquels plots sont disposés de préférence à 11 heures, à 3 heures et à 7 heures. On introduit par le haut le réhaut 15 qui viendra reposer sur les battues supérieures 12 des saillies 11 des plots 7. On introduit ensuite la garniture annulaire 8 et on chasse la glace 2 à l'intérieur de la garniture jusqu'à ce que ladite glace vienne appuyer sur le réhaut, ce dernier appuyant à son tour sur la saillie 11. A la fin de cette opération la tranche de la glace compresse la garniture 8 contre la surface d'appui 5 pour assurer l'étanchéité de la montre.For this purpose, and if one refers to Figures 2, 4 and 5 the stud 7 carries a projection 11 beyond the recess 4 and extending in the direction of movement 17. The axial positioning of the glass 2 is achieved by to an upper batt 12 presented by the projection 11. On this upper batt 12 rests a flange 15 against which the glass 2 rests, the flange serving to ensure a well-defined distance between the dial 14 and the underside of the glass 2 and thus leaving a free space for needles (not shown). To mount the glass, the middle part 1 is provided with its pads 7, which pads are preferably arranged at 11 o'clock, at 3 o'clock and at 7 o'clock. The flange 15 is introduced from the top which will come to rest on the upper flaps 12 of the projections 11 of the studs. The annular lining 8 is then introduced and the ice 2 is expelled inside the lining until said ice press the flange, the latter in turn pressing the projection 11. At the end of this operation, the edge of the ice compresses the gasket 8 against the bearing surface 5 to ensure the watertightness of the watch.

Bien que cela puisse être réalisé d'une autre façon, on va se servir de la même saillie 11 pour positionner axialement le fond 3. Comme on le voit particulièrement bien en figures 2 et 5 la saillie 11 du plot 7 porte une battue inférieure 13 sur laquelle repose un cercle d'encageage 16 contre lequel s'appuie le fond 3. Le cercle d'encageage est conformé pour maintenir en place le mouvement 17, ce mouvement reposant de manière connue dans un logement pratiqué dans le cercle d'encageage. De manière connue également, le mouvement est fixé au cercle d'encageage par des brides, de même que le cadran 14 est fixé au mouvement par des pieds de cadran. Ainsi pour monter le mouvement dans la boîte, on introduit le mouvement 17 avec son cercle attenant 16 par le dessous de la carrure 1, jusqu'à ce que le cercle 16 vienne reposer sur la battue inférieure 13 de la saillie 11. On introduit ensuite la garniture annulaire 9 et on chasse le fond 3 à l'intérieur de la garniture jusqu'à ce que ledit fond 3 vienne s'appuyer sur le cercle d'encageage 16, ce dernier appuyant à son tour sur la saillie 11. A la fin de cette opération la tranche du fond compresse la garniture 9 contre la surface d'appui 6 pour assurer l'étanchéité de la boîte.Although this can be done in another way, we will use the same projection 11 to axially position the bottom 3. As can be seen particularly well in FIGS. 2 and 5 the projection 11 of the stud 7 carries a lower battue 13 on which rests a casing circle 16 against which the bottom 3 rests. The casing circle is shaped to hold in place the movement 17, this movement resting in known manner in a housing formed in the casing circle. Also in known manner, the movement is fixed to the casing circle by flanges, just as the dial 14 is fixed to the movement by feet of the dial. Thus to mount the movement in the case, the movement 17 is introduced with its adjoining circle 16 from the underside of the middle part 1, until the circle 16 comes to rest on the bottom battue 13 of the projection 11. Then we introduce the annular lining 9 and the bottom 3 is chased inside the lining until said bottom 3 comes to bear on the casing ring 16, the latter in turn pressing on the projection 11. At the end of this operation the bottom edge compresses the lining 9 against the bearing surface 6 to seal the box.

Le mode d'exécution montré fait état d'un fond 3 qui est un ensemble formé d'une bague 20 et d'une plaque de fermeture 21. Bague et plaque peuvent être faites d'une pièce ou encore être rapportées l'une sur l'autre au moyen de colle par exemple. Si la carrure est en or, la plaque sera également en or. Cependant, comme cela est montré aux figures 3 à 5, pour diminuer au maximum le poids d'or, la plaque peut être une seconde glace rapportée sur la bague. On obtient alors une boîte en or bon marché dont le poids en métal précieux peut être inférieur à quatre grammes. Dans ce cas le poinçon d'orfèvre sera apposé sur la carrure.The embodiment shown shows a bottom 3 which is an assembly formed by a ring 20 and a closure plate 21. Ring and plate can be made in one piece or even be attached one on the other by means of glue for example. If the middle part is gold, the plate will also be gold. However, as shown in FIGS. 3 to 5, in order to reduce the weight of gold as much as possible, the plate can be a second lens attached to the ring. The result is a cheap gold box whose precious metal weight can be less than four grams. In this case the goldsmith's punch will be affixed to the middle.

Comme cela est montré aux figures 1 et 3, la carrure 1 porte des moyens d'attache 22 d'un bracelet tenu en place au moyen de goupilles traversant des trous 23. Ces cornes peuvent être faites d'une pièce avec la carrure ou rapportées après coup par soudage par exemple.As shown in Figures 1 and 3, the middle 1 carries attachment means 22 of a bracelet held in place by means of pins passing through holes 23. These horns can be made in one piece with the middle or attached afterwards by welding for example.

Comme le montre aussi la figure 4, la boîte prévoit une ouverture 18 continuée par une forure 19 traversant à la fois le plot 7 et le cercle d'encageage 16, ce qui permet la mise en place d'une tige de mise à l'heure, tige qui est disposée de façon très classique dans son logement au moyen d'un tube et d'un joint d'étanchéité.As also shown in Figure 4, the box provides an opening 18 continued by a bore 19 passing through both the stud 7 and the casing ring 16, which allows the establishment of a setting rod hour, rod which is very conventionally placed in its housing by means of a tube and a seal.

Les plots 7 sont au moins au nombre de trois pour assurer une assise convenable aux composants à assembler. On choisira de préférence une ouverture 10° pour le plot coïncidant avec l'entrée de la tige et 5° pour les deux autres.The studs 7 are at least three in number to ensure a suitable seat for the components to be assembled. We will preferably choose an opening 10 ° for the stud coinciding with the entry of the rod and 5 ° for the other two.

On a montré que la construction proposée permet de diminuer autant que possible le poids d'or à utiliser tout en assurant une contruction mécanique solide ainsi qu'un montage très aisé de la boîte.It has been shown that the proposed construction makes it possible to reduce the weight of gold to be used as much as possible while ensuring solid mechanical construction as well as very easy assembly of the box.

Claims (10)

1. Watch case including a caseband (1) and a plurality of components together defining a housing intended to receive a watch movement (17) and display means (14), in which the components comprise a crystal (2) and a back cover (3) and in which the caseband exhibits a recess (4) opening towards the watch case interior, a first support surface (5) cooperating with the crystal and a second support surface (6) cooperating with the back cover, the first and second support surfaces being cylindrical and defining openings in which the crystal and the back cover are respectively engaged, characterized by the fact that at least three blocks (7) unitary with the caseband are arranged in the space defined by said recess and are adapted to position at least one of said components axially.
2. Watch case according to claim 1, characterized by the fact that said blocks are welded within the space defined by said recess.
3. Watch case according to claim 1, characterized by the fact that said blocks are integrally formed with said caseband.
4. Watch case according to claim 1, characterized by the fact that a first seal (8) is interposed between the crystal and the first support surface and that a second seal (9) is interposed between the back cover and the second support surface.
5. Watch case according to claim 1, characterized by the fact that the caseband is of round form and exhibits a recess in the form of a vault (10).
6. Watch case according to claim 1, characterized by the fact that the caseband is formed from gold.
7. Watch case according to claim 1, characterized by the fact that each of said blocks bears a projection (11) extending towards the movement, each projection having an upper snap (12) on which a flange (15) is supported against which the crystal bears.
8. Watch case according to claim 7, characterized by the fact that said projection bears in addition a lower snap (13) on which a casing ring (16) is supported against which the back cover bears, said casing ring being adapted to maintain the movement in place.
9. Watch case according to claim 8, characterized by the fact that the back cover is an assembly formed from a ring (20) and a closure plate (21).
10. Watch case according to claim 9, characterized by the fact that the closure plate comprises a crystal.
EP90100996A 1989-01-23 1990-01-18 Watch case with a hollow middle part Expired - Lifetime EP0379974B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH188/89A CH675663B5 (en) 1989-01-23 1989-01-23
CH188/89 1989-01-23

Publications (2)

Publication Number Publication Date
EP0379974A1 EP0379974A1 (en) 1990-08-01
EP0379974B1 true EP0379974B1 (en) 1992-06-24

Family

ID=4181265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100996A Expired - Lifetime EP0379974B1 (en) 1989-01-23 1990-01-18 Watch case with a hollow middle part

Country Status (6)

Country Link
US (1) US4970708A (en)
EP (1) EP0379974B1 (en)
JP (1) JPH02290590A (en)
CH (1) CH675663B5 (en)
DE (1) DE69000159T2 (en)
ES (1) ES2034774T3 (en)

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CH684861B5 (en) * 1992-12-02 1995-07-31 Smh Management Services Ag watchcase to middle recessed.
CH685465B5 (en) * 1993-05-28 1996-01-31 Marthe Claude Andre watch case in noble metal.
EP0716360B1 (en) 1995-08-30 2001-09-26 Isa Swiss Sa Watch case with a recessed case and fitting means and watch provided with such a case
EP0762240A1 (en) 1995-08-30 1997-03-12 Fabrique D'ebauches De Sonceboz S.A. Watch case with a recessed case and fitting means and watch provided with such a case
US5899370A (en) * 1997-02-13 1999-05-04 Strokz Digital Sports, Inc. Watchstrap
DE69938543T2 (en) 1999-06-29 2009-06-18 The Swatch Group Management Services Ag Chronograph watch made of precious metal with a hollowed out bezel center part
JP2003344562A (en) * 2002-05-30 2003-12-03 Seiko Instruments Inc Wristwatch
US8689446B2 (en) * 2011-02-02 2014-04-08 Richemont International S.A. Method for producing a watch case middle of reduced weight
JP1545809S (en) * 2014-12-05 2016-03-14
JP1547572S (en) * 2015-03-10 2016-04-11
JP1547576S (en) * 2015-03-13 2016-04-11
USD811243S1 (en) * 2015-11-11 2018-02-27 Nixon, Inc. Watch
USD833891S1 (en) * 2017-02-20 2018-11-20 Salvatore Ferragamo S.P.A. Watch
JP1685414S (en) * 2020-02-21 2021-05-17
USD953174S1 (en) * 2020-09-14 2022-05-31 Van Cleef & Arpels SA Watch
EP3985450B1 (en) * 2020-10-16 2024-08-28 The Swatch Group Research and Development Ltd Device for locking a movement of a clock piece

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CH13993A (en) * 1897-03-08 1897-09-15 Joseph De Brouwer Incandescent coke trainer and extinguisher
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GB2200833A (en) * 1987-03-11 1988-08-17 Perfect Products Company Limit Composite wrist watch

Also Published As

Publication number Publication date
DE69000159D1 (en) 1992-07-30
EP0379974A1 (en) 1990-08-01
US4970708A (en) 1990-11-13
DE69000159T2 (en) 1993-01-28
JPH02290590A (en) 1990-11-30
CH675663B5 (en) 1991-04-30
CH675663GA3 (en) 1990-10-31
ES2034774T3 (en) 1993-04-01

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