CH341769A - Timepiece with rotating bezel and method for its manufacture - Google Patents
Timepiece with rotating bezel and method for its manufactureInfo
- Publication number
- CH341769A CH341769A CH341769DA CH341769A CH 341769 A CH341769 A CH 341769A CH 341769D A CH341769D A CH 341769DA CH 341769 A CH341769 A CH 341769A
- Authority
- CH
- Switzerland
- Prior art keywords
- bezel
- timepiece
- plastic material
- reinforcing ring
- manufacture
- Prior art date
Links
Classifications
-
- 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
- G04B19/00—Indicating the time by visual means
- G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
- G04B19/283—Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Description
<Desc/Clms Page number 1>
Pièce d'horlogerie à lunette rotative et procédé pour sa fabrication La présente invention a pour objet une pièce d'horlogerie à lunette rotative et un procédé pour sa fabrication.
La pièce d'horlogerie est caractérisée par le fait que la lunette, en matière plastique, est renforcée par une bague métallique.
Le procédé est caractérisé par le fait que la bague métallique de renforcement est assemblée à la matière plastique de la lunette lors du moulage de celleci.
Le dessin représente, à titre d'exemple, une forme d'exécution de l'objet de l'invention.
La figure est une coupe axiale partielle d'une boîte de montre.
La boîte représentée comprend une carrure 1 dans laquelle est engagée une glace 2 munie d'une bague de renforcement 3. La carrure 1 porte une lunette rotative moletée 4 présentant, sur sa face extérieure 5, une graduation non représentée au dessin, par exemple un tour de minutes. La lunette 4 est montée rotativement sur la boîte au moyen d'un ressort-fil 6 ondulé, pénétrant à la fois dans une gorge 7 de la carrure 1 et dans une gorge 8 de la lunette. Deux garnitures d'étanchéité 9 et 10 empêchent l'humidité de s'infiltrer entre la lunette et la carrure.
La lunette 4 est formée d'une pièce 4a en matière plastique dans laquelle est noyée une bague métallique de renforcement 4b. Cette dernière est invisible lorsque la lunette est en place sur le corps de boîte, sa face affleurant la matière plastique étant située en regard de la carrure. Cette disposition permet de réunir les avantages de la lunette en matière plus- tique à ceux de la lunette métallique. La lunette est en particulier insensible ,aux variations de température et de degré hygrométrique de l'atmosphère ambiante : il est en effet important, pour une lunette rotative, qu'elle ne se dilate ni ne se déforme, de façon que la friction entre elle et son, support ne varie pas.
<Desc / Clms Page number 1>
Timepiece with a rotating bezel and method for its manufacture The present invention relates to a timepiece with a rotating bezel and a method for its manufacture.
The timepiece is characterized by the fact that the bezel, made of plastic, is reinforced by a metal ring.
The method is characterized by the fact that the metal reinforcing ring is assembled with the plastic material of the bezel during the molding of the latter.
The drawing represents, by way of example, an embodiment of the object of the invention.
The figure is a partial axial section of a watch case.
The case shown comprises a caseband 1 in which is engaged a crystal 2 provided with a reinforcing ring 3. The caseband 1 carries a knurled rotating bezel 4 having, on its outer face 5, a graduation not shown in the drawing, for example a turn of minutes. The bezel 4 is rotatably mounted on the case by means of a corrugated wire spring 6, penetrating both into a groove 7 of the middle 1 and into a groove 8 of the bezel. Two gaskets 9 and 10 prevent moisture from infiltrating between the bezel and the middle part.
The bezel 4 is formed from a part 4a of plastic material in which is embedded a metal reinforcing ring 4b. The latter is invisible when the bezel is in place on the case body, its face flush with the plastic material being located opposite the caseband. This arrangement makes it possible to combine the advantages of the bezel in a more technical matter with those of the metal bezel. The bezel is in particular insensitive to variations in temperature and humidity in the ambient atmosphere: it is indeed important, for a rotating bezel, that it neither expands nor deforms, so that the friction between it and its, support does not vary.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH341769T | 1959-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH341769A true CH341769A (en) | 1959-10-15 |
Family
ID=4505909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH341769D CH341769A (en) | 1959-02-27 | 1958-10-04 | Timepiece with rotating bezel and method for its manufacture |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH341769A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3431722A (en) * | 1967-07-27 | 1969-03-11 | Sindace Sa | Timepiece case |
FR2176641A1 (en) * | 1972-03-24 | 1973-11-02 | Iga Sa | |
CH653843GA3 (en) * | 1983-10-18 | 1986-01-31 | Wristwatch case provided with a rotatably mounted external ring | |
EP0770937A1 (en) * | 1995-10-27 | 1997-05-02 | Eta SA Fabriques d'Ebauches | Timepiece provided with a rotatable bezel |
-
1958
- 1958-10-04 CH CH341769D patent/CH341769A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3431722A (en) * | 1967-07-27 | 1969-03-11 | Sindace Sa | Timepiece case |
FR2176641A1 (en) * | 1972-03-24 | 1973-11-02 | Iga Sa | |
CH653843GA3 (en) * | 1983-10-18 | 1986-01-31 | Wristwatch case provided with a rotatably mounted external ring | |
EP0770937A1 (en) * | 1995-10-27 | 1997-05-02 | Eta SA Fabriques d'Ebauches | Timepiece provided with a rotatable bezel |
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