EP0067119A1 - Watch case - Google Patents

Watch case Download PDF

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Publication number
EP0067119A1
EP0067119A1 EP82810206A EP82810206A EP0067119A1 EP 0067119 A1 EP0067119 A1 EP 0067119A1 EP 82810206 A EP82810206 A EP 82810206A EP 82810206 A EP82810206 A EP 82810206A EP 0067119 A1 EP0067119 A1 EP 0067119A1
Authority
EP
European Patent Office
Prior art keywords
crystal
watch case
notch
glass
side walls
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Withdrawn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
EP82810206A
Other languages
German (de)
French (fr)
Inventor
Paul Gogniat
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.)
Rado Uhren AG
Original Assignee
Rado Uhren AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rado Uhren AG filed Critical Rado Uhren AG
Publication of EP0067119A1 publication Critical patent/EP0067119A1/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Withdrawn legal-status Critical Current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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses

Definitions

  • the present invention relates to the mounting of a flat crystal of hard material, of the sapphire type for example, to the upper part of the middle part of a watch case.
  • the invention provides a watch case provided with a flat lens made of hard material, the means for mounting the lens on the middle part, or possibly on a bezel, do not have the above-mentioned disadvantages, but allow a setting in place and extraction of the glass easy, not risking to move or injure the seal, while offering new possibilities in terms of shapes and aesthetics of the box.
  • This object is achieved by providing for engaging the pressure glass between the elastically deformable side walls of a notch formed in the middle part, the facing surfaces of these side walls and of the edge of the glass being inclined relative to the axis. of the box.
  • the notched mounting of a glass on a middle part is known per se, but not in its application to a flat glass of hard material.
  • the Swiss patent application 17 027/66 or the French patents 1 398 410 or 2 395 536 describe watch cases whose glass is provided with an annular skirt or edges which are elastically deformable so as to come to lock against corresponding surfaces provided on the edges of the opening of the middle part.
  • the structures described allow attach a flat, rigid lens not fitted with an annular skirt to the middle.
  • One of the essential aspects of the invention is therefore to have recognized that the intrinsic elasticity of the material in which the middle part is formed could compensate for the rigidity of the crystal and guarantee a retention such that it then becomes possible not to make the notch on only a portion of the periphery of the glass without compromising the tightness of the assembly.
  • the restoring force exerted by the side walls of the notch on the edge of the glass combined with the rigidity of the glass in fact ensures perfect plating of the underside of the glass on a gasket. sealing around its entire periphery, even if it is only retained locally in the notch.
  • the watch case 1 notably includes a middle part 2 to the upper part of which the crystal 3 is fixed.
  • the crystal 3 is flat and made of hard material, such as sapphire for example, while the middle 2 is a common metal of the type of steel or brass, for example.
  • the glass 3 is mounted under pressure between the side walls 4 of a notch 5, these walls being slightly elastically deformable due to the small thickness of these walls.
  • the facing surfaces 6 of the side walls 4 and 7 of the edge of the glass 3 are inclined relative to the axis of the box 1 at an angle A of approximately between 4 and 10 degrees, and preferably between 5 and 8, 5 degrees.
  • the periphery of the lower face 8 of the crystal 3 compresses a seal 9 disposed on a corresponding shoulder 10, formed in the middle part 2, and held in place by a flange 11.
  • the seal 9 and the flange 11 can be masked by a thin layer of metallization deposited on the facing portions of the lower face 8 of the glass 3.
  • the disassembly of the glass is easily obtained by exerting on its lower face 8 a thrust directed towards the outside of the box.
  • FIG. 2 there is shown a watch case according to the invention, in which the crystal 3 is only held in the notch of the middle part 2 on two of its rectilinear sides (13, 14), the other two sides ( 15, 15) extending to the edge of the middle part.
  • Figure 3 shows a watch case in which the crystal is retained along 4 rectilinear portions (17, 18, 19, 20) of the middle part, separated by portions in which it extends. to the edge of the middle, while Figure 4 shows a watch case in which the facing surfaces of the side walls of the notch, and the edge of the ice, have a curvilinear profile.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Packages (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Air Bags (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

A watchcase (1) comprises a flat crystal (3) of hard material held by pressure between elastically deformable opposite side walls (4) of a recess (5) formed at the top of the body (2) of the watchcase. The bottom face (8) of the crystal (3) compresses a seal (9) arranged around the opening of the body. The restoring force exerted on the bevel of the crystal by the facing surface of the walls (4) as well as the rigidity of the crystal make it possible to make tightly sealed watchcases in which the crystal is held on the body over a portion of its margins only.

Description

La présente invention concerne le montage d'une glace plane en matériau dur, du type de saphir par exemple, à la partie supérieure de la carrure d'une boîte de montre.The present invention relates to the mounting of a flat crystal of hard material, of the sapphire type for example, to the upper part of the middle part of a watch case.

L'usage de glaces en matériau dur s'étend toujours davantage à l'heure actuelle pour équiper les boîtes de montres élégantes, non seulement en raison de leur excellente résistance contre l'abrasion, mais également parce qu'elles permettent de réaliser des structures de moindre épaisseur, du fait de leur rigidité.The use of hard material glass is becoming more and more widespread today to equip elegant watch cases, not only because of their excellent resistance to abrasion, but also because they allow structures to be produced. thinner because of their rigidity.

C'est'pourquoi de nombreuses techniques ont déjà été proposées pour assurer le montage de telles glaces dans l'ouverture d'une carrure, ou d'une lunette. -Certaines, comme par exemple le collage, ne permettent pas un remplacement aisé de la glace et ne garantissent pas toujours une bonne étanchéité à long terme. D'autres, comme le chassage de la glace dans un cran avec interposition d'une garniture d'étanchéité, présentent le désavantage de nécessiter un cran suffisamment haut pour assurer la retenue de la glace par frottement, et qui s'étende sur tout le pourtour de la carrure, ce qui limite les possibilités du constructeur de boîte en matière d'esthétique. That's' why many techniques have been proposed for mounting such ice in the opening of a middle part or a telescope. - Some, such as gluing, do not allow easy replacement of the glass and do not always guarantee a good seal in the long term. Others, such as driving the ice into a notch with the interposition of a seal, have the disadvantage of requiring a notch high enough to ensure the retention of the ice by friction, and which extends over the entire circumference of the middle, which limits the possibilities of the box manufacturer in terms of aesthetics.

On connaît également des structures dans lesquelles la glace plane en matériau dur est introduite latéralement dans des glissières aménagées sur deux côtés opposés de la carrure. Il est alors possible de réaliser des boîtes d'aspect très particulier, dans lesquelles la glace s'étend jusqu'au bord de la carrure sur les deux autres côtés de celles-ci, mais l'engagement de la glace dans les glissières risque de provoquer la détérioration du joint d'étanchéité. Par ailleurs, en raison même de la présence des glissières, les formes possibles pour la boîte sont limitées.Structures are also known in which the flat glass made of hard material is introduced laterally in slides arranged on two opposite sides of the middle part. It is then possi ble to produce very special appearance boxes, in which the glass extends to the edge of the middle part on the other two sides of the latter, but the engagement of the glass in the runners may cause deterioration seal. Furthermore, due to the very presence of the slides, the possible shapes for the box are limited.

C'est pourquoi l'invention propose une boîte de montre munie d'une glace plane en matériau dur dont les moyens de montage de la glace sur la carrure, ou éventuellement sur une lunette, ne présentent pas les désavantages susmentionnés, mais permettent une mise en place et une extraction de la glace aisées, ne risquant pas de déplacer ou de blesser le joint, tout en offrant de nouvelles possibilités en matière de formes et d'esthétique de la boîte.This is why the invention provides a watch case provided with a flat lens made of hard material, the means for mounting the lens on the middle part, or possibly on a bezel, do not have the above-mentioned disadvantages, but allow a setting in place and extraction of the glass easy, not risking to move or injure the seal, while offering new possibilities in terms of shapes and aesthetics of the box.

Cet objet est réalisé en prévoyant d'engager la glace à pression entre les parois latérales élastiquement déformables d'un cran formé dans la carrure, les surfaces en regard de ces parois latérales et de la tranche de la glace étant inclinées relativement à l'axe de la boîte.This object is achieved by providing for engaging the pressure glass between the elastically deformable side walls of a notch formed in the middle part, the facing surfaces of these side walls and of the edge of the glass being inclined relative to the axis. of the box.

Bien entendu, le montage à cran d'une glace sur une carrure est connu en soi, mais non dans son application à une glace plane en matière dure. Par exemple, la demande de brevet suisse 17 027/66 ou les brevets français 1 398 410 ou 2 395 536 décrivent des boîtes de montres dont la glace est munie d'une jupe annulaire ou de bords déformables élastiquement de manière à venir se verrouiller contre des surfaces correspondantes prévues sur les bords de l'ouverture de la carrure. En aucun cas les structures décrites ne permettraient de fixer sur la carrure une glace plane, rigide et non munie d'une jupe annulaire. L'un des aspects essentiels de l'invention est donc d'avoir reconnu que l'élasticité intrinsèque du matériau dans lequel est formé la carrure pouvait suppléer à la rigidité de la glace et garantir une retenue telle qu'il devient alors possible de ne réaliser le cran que sur une portion seulement du pourtour de la glace sans compromettre l'étanchéité de l'assemblage. De façon surprenante, la force de rappel exercée par les parois latérales du cran sur la tranche de la glace, alliée à la rigidité de la glace permet en effet d'assurer un placage parfait de la face inférieure de la glace sur un joint d'étanchéité sur tout le pourtour de celle-ci, même si elle n'est retenue que localement dans le cran.Of course, the notched mounting of a glass on a middle part is known per se, but not in its application to a flat glass of hard material. For example, the Swiss patent application 17 027/66 or the French patents 1 398 410 or 2 395 536 describe watch cases whose glass is provided with an annular skirt or edges which are elastically deformable so as to come to lock against corresponding surfaces provided on the edges of the opening of the middle part. In no case will the structures described allow attach a flat, rigid lens not fitted with an annular skirt to the middle. One of the essential aspects of the invention is therefore to have recognized that the intrinsic elasticity of the material in which the middle part is formed could compensate for the rigidity of the crystal and guarantee a retention such that it then becomes possible not to make the notch on only a portion of the periphery of the glass without compromising the tightness of the assembly. Surprisingly, the restoring force exerted by the side walls of the notch on the edge of the glass, combined with the rigidity of the glass in fact ensures perfect plating of the underside of the glass on a gasket. sealing around its entire periphery, even if it is only retained locally in the notch.

L'invention sera bien comprise à la lecture de la description suivante faite en référence aux dessins joints, parmi lesquels:

  • - la figure 1 est une vue schématique en coupe partielle d'une boîte de montre selon l'invention; et
  • - les figures 2 à 4 représentent respectivement, en vue de dessus, trois boîtes de montres différentes incorporant l'invention.
The invention will be clearly understood on reading the following description made with reference to the accompanying drawings, among which:
  • - Figure 1 is a schematic view in partial section of a watch case according to the invention; and
  • - Figures 2 to 4 show respectively, in top view, three different watch cases incorporating the invention.

Comme on le voit dans la figure 1, la boîte de montre 1 comprend notamment une carrure 2 à la partie supérieure de laquelle est fixée la glace 3. La glace 3 est plane et en matériau dur, comme le saphir par exemple, tandis que la carrure 2 est un métal usuel du type de l'acier ou du laiton, par exemple. La glace 3 est montée a pression entre les parois latérales 4 d'un cran 5, ces parois étant légèrement déformables élastiquement en raison de la faible épaisseur de ces parois. Les surfaces en regard 6 des parois latérales 4 et 7 de la tranche de la glace 3 sont inclinées relativement à l'axe de la boîte 1 d'un angle A compris approximativement entre 4 et 10 degrés, et de préférence entre 5 et 8,5 degrés. Le pourtour de la face inférieure 8 de la glace 3 comprime un joint d'étanchéité 9 disposé sur un épaulement 10 correspondant, formé dans la carrure 2, et mainte- ne en place par un réhaut 11. Le joint 9 et le réhaut 11 peuvent être masqués par une couche de métallisation de faible épaisseur déposée sur les portions en regard de la face inférieure 8 de la glace 3. Le démontage de la glace s'obtient aisément en exerçant sur sa face inférieure 8 une poussée dirigée vers l'extérieur de la boîte.As can be seen in FIG. 1, the watch case 1 notably includes a middle part 2 to the upper part of which the crystal 3 is fixed. The crystal 3 is flat and made of hard material, such as sapphire for example, while the middle 2 is a common metal of the type of steel or brass, for example. The glass 3 is mounted under pressure between the side walls 4 of a notch 5, these walls being slightly elastically deformable due to the small thickness of these walls. The facing surfaces 6 of the side walls 4 and 7 of the edge of the glass 3 are inclined relative to the axis of the box 1 at an angle A of approximately between 4 and 10 degrees, and preferably between 5 and 8, 5 degrees. The periphery of the lower face 8 of the crystal 3 compresses a seal 9 disposed on a corresponding shoulder 10, formed in the middle part 2, and held in place by a flange 11. The seal 9 and the flange 11 can be masked by a thin layer of metallization deposited on the facing portions of the lower face 8 of the glass 3. The disassembly of the glass is easily obtained by exerting on its lower face 8 a thrust directed towards the outside of the box.

Dans la figure 2 on a représenté une boîte de montre selon l'invention, dans laquelle la glace 3 n'est maintenue dans le cran de la carrure 2 que sur deux de ses côtés rectilignes (13, 14), les deux autres côtés (15, 15) s'étendant jusque sur le bord de la carrure.In FIG. 2 there is shown a watch case according to the invention, in which the crystal 3 is only held in the notch of the middle part 2 on two of its rectilinear sides (13, 14), the other two sides ( 15, 15) extending to the edge of the middle part.

A ti.tre de variantes, la figure 3 montre une boîte de montre dans laquelle la glace est retenue le long de 4 portions rectilignes (17, 18, 19, 20) de la carrure, séparées par des portions dans lesquelles elle s'étend jusqu'au bord de la carrure, tandis que la figure 4 représente une boîte de montre dans laquelle les surfaces en regard des parois latérales du cran, et de la tranche de 1a glace, présentent un profil curviligne.Figure 3 shows a watch case in which the crystal is retained along 4 rectilinear portions (17, 18, 19, 20) of the middle part, separated by portions in which it extends. to the edge of the middle, while Figure 4 shows a watch case in which the facing surfaces of the side walls of the notch, and the edge of the ice, have a curvilinear profile.

Bien qu'elle ait été décrite en relation avec certaines-modes de réalisation seulement, l'invention est susceptible de nombreuses modifications et variantes qui apparaîtront à l'homme de l'art.Although it has been described in relation to certain embodiments only, the invention is susceptible of numerous modifications and variants which will appear to those skilled in the art.

Claims (6)

1.. Boîte de montre comprenant notamment une carrure à la partie supérieure de laquelle est assujettie une glace plane réalisée en un matériau dur, caractérisée en ce que la glace est engagée à pression entre les parois latérales élastiquement déformables d'un'cran formé dans la carrure, les surfaces en regard de ces parois latérales et de la tranche de la glace étant inclinées relativement à l'axe de la boîte.1 .. Watch case comprising in particular a middle part to the upper part of which is fixed a flat glass made of a hard material, characterized in that the glass is engaged under pressure between the elastically deformable side walls of a screen formed in the middle part, the facing surfaces of these side walls and of the edge of the crystal being inclined relative to the axis of the case. 2. Boîte de montre selon la revendication 1, caractérisée en ce que la glace est engagée entre les parois du cran sur une portion seulement de sa périphérie.2. Watch case according to claim 1, characterized in that the crystal is engaged between the walls of the notch on only a portion of its periphery. 3. Boîte de montre selon l'une des revendications précédentes, caractérisée en ce qu'un joint d'étanchéité annulaire disposé sur un épaulement correspondant de la carrure est comprimé par le pourtour de la face inférieure de la glace lorsque celle-ci est engagée dans le cran.3. Watch case according to one of the preceding claims, characterized in that an annular seal placed on a corresponding shoulder of the middle part is compressed by the periphery of the underside of the crystal when the latter is engaged. in the notch. 4. Boîte de montre selon l'une des revendications précédentes, caractérisée en ce que les surfaces en regard des parois latérales du cran et de la tranche de la glace présentent un profil curviligne relativement au plan de la glace.4. Watch case according to one of the preceding claims, characterized in that the facing surfaces of the side walls of the notch and of the edge of the crystal have a curvilinear profile relative to the plane of the crystal. 5. Boîte de montre selon l'une des revendications précédentes, caractérisée en ce que l'inclinaison des parois latérales du cran et de la tranche de la glace relativement à l'axe de la boîte est comprise entre 4 et 10 degrés environ.5. Watch case according to one of the preceding claims, characterized in that the inclination of the lateral walls of the notch and of the edge of the crystal relative to the axis of the case is between about 4 and 10 degrees. 6. Boite de montre selon la revendication 5, caractérisée en ce que ladite inclinaison est comprise entre 5 et 8,5 degrés environ.6. Watch case according to claim 5, characterized in that said inclination is between 5 and 8.5 degrees approximately.
EP82810206A 1981-06-01 1982-05-17 Watch case Withdrawn EP0067119A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3556/81 1981-06-01
CH355681A CH643103B (en) 1981-06-01 1981-06-01 WATCH BOX.

Publications (1)

Publication Number Publication Date
EP0067119A1 true EP0067119A1 (en) 1982-12-15

Family

ID=4258533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810206A Withdrawn EP0067119A1 (en) 1981-06-01 1982-05-17 Watch case

Country Status (4)

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US (1) US4473305A (en)
EP (1) EP0067119A1 (en)
JP (1) JPS57211576A (en)
CH (1) CH643103B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10264692B2 (en) * 2014-05-12 2019-04-16 Jesus Garza Leal Protective casing for an electrical energy reader including a glass lens

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH76449A (en) * 1917-06-18 1917-12-17 Leon Depollier Charles Watch bezel
GB598918A (en) * 1942-12-28 1948-03-01 Steimann Hans Watertight watchcase

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH75169A (en) * 1917-03-17 1917-06-16 Huettenwerk Niederschoeneweide Process for the treatment of molten material, alloys and the like and a flame furnace for its practice
US2029769A (en) * 1934-12-04 1936-02-04 Goldblatt Joseph Mounting for the crystal of a wrist watch casing
CH353686A (en) * 1959-04-01 1961-04-15 Vaurillon Emile Antoine Box, especially for watches, containing an electricity accumulator
CH571964A4 (en) * 1964-05-01 1967-02-15
CH583439B5 (en) * 1973-11-09 1976-12-31 Century Time Ltd
JPS5732468Y2 (en) * 1978-04-28 1982-07-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH76449A (en) * 1917-06-18 1917-12-17 Leon Depollier Charles Watch bezel
GB598918A (en) * 1942-12-28 1948-03-01 Steimann Hans Watertight watchcase

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DIE UHR, vol. 19, no. 1, 9 janvier 1965, page 23, (DE); *

Also Published As

Publication number Publication date
US4473305A (en) 1984-09-25
CH643103GA3 (en) 1984-05-30
CH643103B (en)
JPS57211576A (en) 1982-12-25

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