EP0830643A1 - Montre, notamment montre de plongee - Google Patents

Montre, notamment montre de plongee

Info

Publication number
EP0830643A1
EP0830643A1 EP96910896A EP96910896A EP0830643A1 EP 0830643 A1 EP0830643 A1 EP 0830643A1 EP 96910896 A EP96910896 A EP 96910896A EP 96910896 A EP96910896 A EP 96910896A EP 0830643 A1 EP0830643 A1 EP 0830643A1
Authority
EP
European Patent Office
Prior art keywords
watch
liquid
chamber
vacuum
vessel
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Withdrawn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
EP96910896A
Other languages
German (de)
English (en)
Inventor
Peter Husy
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.)
Chronotime AG
Original Assignee
Chronotime 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 Chronotime AG filed Critical Chronotime AG
Publication of EP0830643A1 publication Critical patent/EP0830643A1/fr
Withdrawn legal-status Critical Current

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
    • G04B37/00—Cases
    • G04B37/02—Evacuated cases; Cases filled with gas or liquids; Cases containing substances for absorbing or binding moisture or dust

Definitions

  • the invention relates to a watch, in particular a diving watch with a quartz movement housed in a housing, which is suitable for diving into very great water depths.
  • CH 608 325 has made known a wristwatch with an electronic movement, in which the electronic movement and the static display device are located in a dielectric liquid bath. This should prevent the electrical contacts from corroding due to air humidity. Greater operational reliability is to be achieved.
  • the cavities remaining in the housing are completely filled with the liquid.
  • the liquid is required to have practically the same coefficient of expansion as the housing. This has the disadvantage that a liquid suitable for this material can be found for each housing material must, which is practically a thing of impossibility, since the liquid must also meet the requirements in terms of transparency, chemical stability, corrosion protection, electrical insulation, low viscosity, etc.
  • the patent specification CH 608 325 contains no information as to whether the watch is waterproof or not. In particular, the liquid is not required to have hydrophobic properties.
  • US Pat. No. 3,860,844 describes an encapsulated gear transmission for installation in the housing of a wristwatch.
  • the capsule for the transmission contains two chambers which are connected to one another by an opening of small diameters.
  • One of the chambers contains the gear wheels running in an oil bath and the other chamber serves as an expansion chamber and contains a small air bubble for this purpose.
  • the encapsulated gear is driven by a vibration motor and serves to drive the hand of a wristwatch.
  • the force transmission from the vibration motor to the first gear wheel and the force transmission from the last gear wheel to the pointer take place through the wall of the gear housing by means of magnetic forces. Vibration motor, pointer, battery, dial are thus arranged outside the gearbox.
  • the watch is said to be particularly suitable as a diving watch for great depths.
  • a clock according to claim 1 Such a watch is suitable for diving to great depths. Although professional divers are generally exposed to a maximum pressure of about 30 bar, tests have shown that the watch according to the invention has a pressure of 1200 can endure bar. Since the watch contains a gas bubble, this can compensate for the expansion of the liquid if the temperature rises. It is therefore not necessary to match the expansion coefficients of the housing and the liquid. The same liquid can be used for housings made of different materials, e.g. steel, gold, plastic, stone, ceramic, etc.
  • the watch also has the advantage of excellent readability of the dial and hands. It gives the impression that these are on the surface of the glass. There is optimal readability from every angle.
  • the liquid prevents corrosion of watch parts and guarantees excellent lubrication of moving parts, e.g. the pointer drive. Leakage currents are avoided. The batteries are therefore not discharged prematurely. If the housing is damaged by mechanical action, this damage is identified in good time by the fact that liquid flows out. There is also no risk of water and moisture penetrating and destroying the clockwork.
  • the gas bubble is expediently located between the glass of the housing and the display device. It is therefore clearly visible. A diver can determine from their position what is above and below.
  • the gas bubble in the liquid inside the watch advantageously has a diameter of 0.5 to 2 mm, preferably 1.5 mm. This is sufficient to accommodate expansion differences between the housing and the liquid.
  • the liquid is expediently hydrophobic. This has the advantage that water cannot cause immediate damage even after slight damage to the housing.
  • a silicone oil is advantageously used as the liquid.
  • a product that has proven to be advantageous under the Name Dow Corning Fluid 200 viscosity 10 is commercially available.
  • the invention also relates to a method for producing a watch.
  • This method is characterized in that the watch, which is fully assembled except for the closure of an access opening in the watch case, is immersed in electrically insulating liquid, that the pressure in the liquid is reduced in order to create a vacuum in the watch case that reduces the pressure over a certain period of time to allow liquid to flow into the housing, and that the watch is removed from the liquid surrounding it and the access opening is closed.
  • the pressure in the liquid is reduced, the air or any other gas contained in the watch case escapes, so that subsequently, when the pressure reduction is ended, liquid flows into the watch case.
  • the pressure reduction is chosen so that not all air or gas escapes from the housing, leaving an air or gas bubble in the housing.
  • the watch is placed in the liquid, to evacuate practically all air and then replace it, for example, with another gas, for example a noble gas.
  • another gas for example a noble gas.
  • the filling process can be carried out in various ways using simple means. It is thus possible to proceed in such a way that the watch is inserted into a closable vessel, which is partially filled with liquid, that the vessel is closed for pressure reduction and switched on to a vacuum source, and that the vacuum source is used to end the pressure reduction is switched off and a valve is opened to allow air to flow into the vessel.
  • the watch is placed in an open vessel which is filled with liquid and that the vessel is introduced into a vacuum chamber and subjected to a vacuum there and then removed again.
  • Another possibility for filling is that the watch is placed in a closable chamber, that the chamber is filled with liquid via a valve, the Air is released from the chamber via an air valve, the valves are closed and a hydraulic cylinder is actuated, which draws liquid from the chamber to create a vacuum in the watch case, that the air valve is opened to relieve the negative pressure and thus liquid in allow the watch case to flow, and that the residual liquid remaining in the chamber is drained and the watch is removed from the chamber.
  • care is advantageously taken to ensure that the access opening is directed upwards in order to facilitate the escape of air.
  • the crown opening can be used as an access opening, the crown with the shaft then being inserted after the watch has been removed from the liquid.
  • FIG. 1 shows a side view of the clock, the upper part being partially shown in elevation.
  • the clock 11 has a housing 13 on which a so-called diving ring 15 is rotatably arranged.
  • the underside of the housing 13 is closed with an exchangeable housing base 17.
  • the crown 19 can be seen, which is connected to the movement via a shaft inserted into the crown opening of the housing 13.
  • the top of the watch case 13 is closed by a glass 21, for example a mineral glass.
  • a dial 23 is arranged at a distance from the glass 21.
  • a pointer 25 is visible above the dial 23. It can be seen that the space between the glass 21 and the dial 23 is completely filled with the liquid 29 except for an air bubble 27.

Landscapes

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

Abstract

L'invention concerne une montre (1) comportant un mouvement à quartz monté dans un boîtier (13). Les espaces qui demeurent inoccupés dans le boîtier (13) sont remplis avec un liquide (29) hydrophobe électro-isolant. Ce liquide comprend une bulle de gaz (27) qui sert à compenser la différence de coefficients d'expansion entre le boîtier (13) et le liquide (29). La bulle de gaz (27) est nettement visible entre le verre (21) et l'indicateur (23). D'après la position de ladite bulle de gaz, un plongeur peut déduire ce qui est au-dessus et en dessous. Pour réaliser cette montre, on immerge la montre, dont le prémontage comprend la couronne (19) et la tige, dans un liquide hydrophobe électroconducteur. La pression régnant dans ledit liquide est ensuite réduite afin de faire le vide. Suite à cette réduction de pression, le liquide s'écoule dans le boîtier. La montre peut alors être enlevée et l'ouverture de la couronne servant d'orifice d'entrée au liquide peut alors être obturée par insertion de la tige avec la couronne.
EP96910896A 1995-05-10 1996-05-08 Montre, notamment montre de plongee Withdrawn EP0830643A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH134795A CH686989B5 (de) 1995-05-10 1995-05-10 Uhr, insbesondere Taucheruhr.
CH1347/95 1995-05-10
PCT/CH1996/000179 WO1996035978A1 (fr) 1995-05-10 1996-05-08 Montre, notamment montre de plongee

Publications (1)

Publication Number Publication Date
EP0830643A1 true EP0830643A1 (fr) 1998-03-25

Family

ID=4208360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96910896A Withdrawn EP0830643A1 (fr) 1995-05-10 1996-05-08 Montre, notamment montre de plongee

Country Status (6)

Country Link
EP (1) EP0830643A1 (fr)
JP (1) JPH11505017A (fr)
AU (1) AU5395996A (fr)
CH (1) CH686989B5 (fr)
DE (1) DE19680323D2 (fr)
WO (1) WO1996035978A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2229739C1 (ru) * 2002-10-24 2004-05-27 Гасанов Эдуард Гамидович Корпус для часов
US8322916B2 (en) 2010-12-15 2012-12-04 Jeremy James Patt Thermal expansion compensator for liquid-filled watches
CN103975280B (zh) * 2011-12-09 2016-12-28 卡地亚国际有限公司 一种用于在保护环境中放置表壳的方法
RU2570667C1 (ru) * 2014-10-24 2015-12-10 Общество с ограниченной ответственностью "Часовой завод "НИКА" Часы (варианты)
CN116569114B (zh) 2020-11-30 2025-07-25 高科办公用品有限公司 具有油浴中的石英机芯的表

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE667696A (fr) *
US3860844A (en) * 1972-02-28 1975-01-14 Suisse Horlogerie Low friction miniature gear drive for transmitting small forces
JPS56500866A (fr) * 1979-07-16 1981-06-25
DE3009624A1 (de) * 1980-03-13 1981-09-17 Andreas 4630 Bochum Plaas-Link Anordnung zum abdichten von armbanduhren
FR2613849B1 (fr) * 1987-04-09 1989-06-23 Lefebvre Michel Dispositif de mesure du temps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9635978A1 *

Also Published As

Publication number Publication date
CH686989B5 (de) 1997-02-28
AU5395996A (en) 1996-11-29
DE19680323D2 (de) 1999-05-12
JPH11505017A (ja) 1999-05-11
CH686989GA3 (de) 1996-08-30
WO1996035978A1 (fr) 1996-11-14

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