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EP1388766A1 - Einrichtung und Verfahren zur Prüfung der Dichtigkeit eines Gehäuses, insbesondere eines Uhrgehäuses - Google Patents

Einrichtung und Verfahren zur Prüfung der Dichtigkeit eines Gehäuses, insbesondere eines Uhrgehäuses Download PDF

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Publication number
EP1388766A1
EP1388766A1 EP02078340A EP02078340A EP1388766A1 EP 1388766 A1 EP1388766 A1 EP 1388766A1 EP 02078340 A EP02078340 A EP 02078340A EP 02078340 A EP02078340 A EP 02078340A EP 1388766 A1 EP1388766 A1 EP 1388766A1
Authority
EP
European Patent Office
Prior art keywords
gas
concentration
enclosure
sensor
box
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Withdrawn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
EP02078340A
Other languages
English (en)
French (fr)
Inventor
Francois Gueissaz
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.)
Asulab AG
Original Assignee
Asulab 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 Asulab AG filed Critical Asulab AG
Priority to EP02078340A priority Critical patent/EP1388766A1/de
Priority to KR1020057001896A priority patent/KR20050035874A/ko
Priority to US10/522,895 priority patent/US20050270908A1/en
Priority to AU2003258575A priority patent/AU2003258575A1/en
Priority to CNA038191210A priority patent/CN1675598A/zh
Priority to EP03792255A priority patent/EP1529248A2/de
Priority to JP2004530084A priority patent/JP2005535902A/ja
Priority to PCT/EP2003/008672 priority patent/WO2004019141A2/fr
Publication of EP1388766A1 publication Critical patent/EP1388766A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/006—Testing apparatus for complete clockworks with regard to external influences or general good working
    • G04D7/007—Testing apparatus for complete clockworks with regard to external influences or general good working with regard to the sealing of the case

Definitions

  • the present invention relates to a device for ensuring that a hermetically sealed enclosure such that a box of a timepiece is waterproof vis-à-vis the outside.
  • the present invention also relates to a method for checking the tightness of such an enclosure.
  • a pressure gauge is however a complicated, delicate and expensive instrument which, in case of failure of the watch case sealing device, risk of being deteriorated in the same way as the movement, which considerably increases the repair costs.
  • a device of the kind described above has the merit of being relatively simple and fairly robust, and less expensive than a pressure gauge.
  • Such a device has however for the disadvantage of providing information of the all or nothing type comparable to that provided by an indicator light for example.
  • This device does not will pass from its first to its second stable state in which it indicates to the carrier of shows that it has a leak, that when the overpressure the interior of the watch case will have dropped by a predetermined value. So it turns out It may very well be that the watch has leaks, but that the prevailing pressure has not yet reached the threshold value necessary for triggering of the device for checking that the seal is maintained. Movement can therefore deteriorate without the wearer of the watch knowing anything about it.
  • the object of the present invention is to remedy the drawbacks mentioned above as well as to others by proposing a monitoring device sealing, for example a watch case, which allows its wearer to be alerted as soon as it begins to show leaks.
  • the present invention relates to a device for monitoring the sealing of a closed enclosure such as a box of a timepiece, characterized in that it comprises a sensor capable of measuring the fluctuations of the concentration of a gas from the atmosphere confined in the enclosure.
  • the present invention provides a device to instantly alert, for example the wearer of a watch, of a defect sealing the case of his watch. Indeed, as soon as the watch presents a leakage, this causes a gas exchange between the surrounding air and the atmosphere in the watch case and decreases concomitant with the concentration of gas from the atmosphere confined in said box, decrease which is detected by the sensor. Quickly warned of leakage of his watch, the wearer can bring it back to his watchmaker who can place it under a vacuum bell to test and repair it if necessary. The risks that the movement of the watch is deteriorated are thus greatly reduced.
  • the gas sensor includes an electronic detection circuit.
  • Such a circuit is reliable, little bulky and consumes less energy when it is only switched on for brief moments at regular time intervals.
  • it has no movable member, which further increases its reliability.
  • the gas present in the confined atmosphere of the watch case is a neutral and heavy gas with a thermal conductivity different from that of air, such as, for example, carbon.
  • the watch can be very easily reconditioned by a watchmaker Trade. It suffices, in fact, while the watch case is still open, to pour neutral and heavy gas into it, the concentration of which fluctuates are to be watched. So in the case of carbon dioxide which is a gas it is easy to obtain in the form of an aerosol can, no specific tools are necessary. After filling the canister with gas, completely or partially, it suffices to close it tightly without having to worry about the concentration of said gas insofar as the device according to the invention uses relative concentration values and not absolute values.
  • a neutral gas has other advantages. Because of its neutrality, it can only react with the components of the watch, so that the variations in its concentration in the confined atmosphere of the box are a reflection faithful gas exchanges that occur between this box and the ambient air. Well of course, the neutral gas chosen must be non-toxic and not very widespread in the air, i.e. that its concentration in the box should be higher than its concentration in the air.
  • the neutral gas can be blown into the box via a valve.
  • a neutral gas lighter than air such as helium.
  • the coefficient of thermal conductivity of helium is in a ratio of ten to that of ambient air, which allows a increased detection sensitivity.
  • a light gas such as helium diffuses more which further enhances the detection sensitivity.
  • the present invention proceeds from the general inventive idea which consists in measure the fluctuations in the concentration of a gas in the atmosphere confined in a closed enclosure such as a watch case. As soon as a decrease in the gas concentration is detected, an alarm is produced to warn the wearer of shows that it has a leak.
  • the main advantage of the present invention is that it does not constitute an all-or-nothing system that only provides information when the parameter to be monitored reaches a trigger threshold value, but on the contrary provide an extremely sensitive system that will warn the wearer of the watch as soon as it begins to show signs of leakage.
  • the system according to the invention measures a relative value and not a value absolute. It is therefore not necessary to fix the initial gas concentration at a determined value, only the value of this initial concentration to be known.
  • the device according to the invention is of the passive type, so that it does not include no moving parts and is therefore very reliable.
  • the present invention will be described in conjunction with a timepiece of the wristwatch type. It goes without saying that the invention is not limited to such a watch and that it can be applied identically to the measurement of the loss of any hermetically sealed enclosure.
  • FIG. 1 appended to this patent application is a sectional view a timepiece fitted with the gas detection device according to the invention.
  • this piece watchmaking conventionally comprises a case 2 provided with a middle part 4 and a bottom 6 which delimits the housing 2 in its lower part.
  • the back 6 is made in one piece with the middle part 4.
  • Box 2 can be made, for example, of a plastic material according to well injection techniques known.
  • the present invention is not however limited to the choice of such a material and the housing 2 can be made of any type of material adapted to the needs of the watch industry such as, in particular, steel.
  • the timepiece 1 also includes a horometric movement 8 mounted in a casing ring 10.
  • This movement 8 is supplied with current by an electric battery 12 which can, if necessary, be recharged after exhaustion or replaced.
  • the battery 12 shown schematically in the drawing, has typically the shape of a pellet. It can be housed in the back 6 of watch 1.
  • the underside of the battery 12 which constitutes one of the poles of the latter is connected electrically to ground of watch 1, for example via a spring contact 13 fixed to the bottom 6 of said watch 1.
  • the other pole of the battery 12 which consists of its upper face is usually connected electrically to the time movement 8.
  • the housing 2 is delimited by a glass 14 covering means 16 for displaying time information.
  • these display means 16 consist of a dial 18 above which move an hour hand 20, a minute hand 22 and a hand 24 seconds. These are therefore analog means of displaying the time. He could also be digital display means constituted by a crystal cell liquids.
  • the housing 2 has at its upper periphery a notch 26 in which is engaged a bezel 28 which secures the lens 14 on the housing 2.
  • the bezel 28 is fixedly mounted on the housing 2, for example by gluing or welding with ultrasound or by hunting.
  • the glass 14 is sealed against the case 2 through the use of a seal 30 wedged between the glass and the case.
  • the timepiece 1 comprises also a sensor 32 housed in the housing 2.
  • This sensor 32 is capable of detecting fluctuations in the concentration of a gas such as, for example, dioxide carbon, from the atmosphere confined in the housing 2.
  • the sensor 32 is preferably electronic type, small dimensions and low consumption energy.
  • An example of such a sensor is that sold by the Swiss company Microsens Products under the reference MTCS 2200.
  • the operating principle of such a sensor is as follows. Means of electric heating have the role of maintaining a membrane thermally and electrically insulating part of the sensor at a temperature of predetermined setpoint. Depending on fluctuations in the gas concentration neutral of the atmosphere confined in the box, the thermal conductivity of said atmosphere varies, so more or less electrical energy must be supplied to heating means to maintain the membrane at its set temperature. Correspondence tables are used to determine, depending on the electric power supplied, the concentration of the atmosphere in neutral gas used. In the case of carbon dioxide, its thermal conductivity is less than a third to that of air, which makes it possible to detect variations in the concentration of this gas as low as 1%. In another embodiment, the heat flux is measured between the heating membrane and a temperature sensor, separated from each other by the gas whose concentration fluctuations are to be measured.
  • the first which is the simplest, is to open the box 2 of the shows 1 and spray the gas into it. So in the case of carbon dioxide which is a gas which is easy to obtain in the form of an aerosol can 34 (see FIG. 2), no specific tools are required. After filling the box 2 with gas, it just close it tightly.
  • a valve 36 (see figure 3) intended to open under the action of an external pressure and comprising a tube 38 on which can be fixed a supply pipe 40 of a pressurized gas.
  • the sensor 32 performs a measurement of the initial concentration of this gas, and then performs subsequent measurements by continuously or intermittently. As soon as the sensor detects a variation in the concentration of neutral gas in the atmosphere confined in the housing, it generates a alarm. Indeed, if the concentration of neutral gas varies, it means that air has penetrated into the case from outside of it.
  • the alarm can be visual and display as a message or symbol on a crystal screen liquids.
  • the sensor can also control the lighting of a warning light or although still the emission of an audible signal. Therefore, the wearer of watch 1 is warned that it has a leak and that it must be returned to the watchmaker at the end of the repair. The carrier being quickly informed, the risks that the movement of the mount is deteriorated is greatly limited.
  • the gas sensor measures the ambient temperature before measure the desired gas concentration.
  • a timepiece is typically designed to operate in a temperature range between -20 ° C and + 70 ° C. It is understood that such temperature differences affect the pressure inside the box. By measuring the ambient temperature beforehand, the sensor can take into account the result of this measurement to correct the measurement of the pressure which he will subsequently carry out.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Electromechanical Clocks (AREA)
EP02078340A 2002-08-09 2002-08-09 Einrichtung und Verfahren zur Prüfung der Dichtigkeit eines Gehäuses, insbesondere eines Uhrgehäuses Withdrawn EP1388766A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP02078340A EP1388766A1 (de) 2002-08-09 2002-08-09 Einrichtung und Verfahren zur Prüfung der Dichtigkeit eines Gehäuses, insbesondere eines Uhrgehäuses
KR1020057001896A KR20050035874A (ko) 2002-08-09 2003-08-06 시계 케이스의 누출 방지를 검사하기 위한 장치와 방법
US10/522,895 US20050270908A1 (en) 2002-08-09 2003-08-06 Device and method for testing the leak-tightness of a timepiece case
AU2003258575A AU2003258575A1 (en) 2002-08-09 2003-08-06 Device and method for testing the leak-tightness of a timepiece case
CNA038191210A CN1675598A (zh) 2002-08-09 2003-08-06 用于检测钟表表壳的密封性的装置和方法
EP03792255A EP1529248A2 (de) 2002-08-09 2003-08-06 Verfahren und vorrichtung zum dichtheitsprüfen von einem uhrgehäuse
JP2004530084A JP2005535902A (ja) 2002-08-09 2003-08-06 時計のケースの耐密性試験装置およびその方法
PCT/EP2003/008672 WO2004019141A2 (fr) 2002-08-09 2003-08-06 Dispositif et procede de controle de l'etancheite d'une boite de piece d'horlogerie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02078340A EP1388766A1 (de) 2002-08-09 2002-08-09 Einrichtung und Verfahren zur Prüfung der Dichtigkeit eines Gehäuses, insbesondere eines Uhrgehäuses

Publications (1)

Publication Number Publication Date
EP1388766A1 true EP1388766A1 (de) 2004-02-11

Family

ID=30129229

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02078340A Withdrawn EP1388766A1 (de) 2002-08-09 2002-08-09 Einrichtung und Verfahren zur Prüfung der Dichtigkeit eines Gehäuses, insbesondere eines Uhrgehäuses
EP03792255A Withdrawn EP1529248A2 (de) 2002-08-09 2003-08-06 Verfahren und vorrichtung zum dichtheitsprüfen von einem uhrgehäuse

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03792255A Withdrawn EP1529248A2 (de) 2002-08-09 2003-08-06 Verfahren und vorrichtung zum dichtheitsprüfen von einem uhrgehäuse

Country Status (7)

Country Link
US (1) US20050270908A1 (de)
EP (2) EP1388766A1 (de)
JP (1) JP2005535902A (de)
KR (1) KR20050035874A (de)
CN (1) CN1675598A (de)
AU (1) AU2003258575A1 (de)
WO (1) WO2004019141A2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2770380A1 (de) * 2013-02-21 2014-08-27 The Swatch Group Research and Development Ltd. Elektronische Vorrichtung, die mit Mitteln zur automatischen Erkennung eines Lecks ausgestattet ist
DE102015200549A1 (de) * 2015-01-15 2016-07-21 Zf Friedrichshafen Ag Schaltungsvorrichtung und Verfahren zum Überwachen einer Schaltungsvorrichtung
IT201800004833A1 (it) * 2018-04-24 2019-10-24 Metodo per il controllo della tenuta d’acqua nelle strumentazioni per uso subacqueo
CN112763146A (zh) * 2020-12-29 2021-05-07 博众精工科技股份有限公司 一种水密性测试用承载治具、测试装置及测试方法
EP3985452A1 (de) * 2020-10-16 2022-04-20 The Swatch Group Research and Development Ltd Vorrichtung zum messen eines relativen feuchtigkeitsgrads im gehäuse einer armbanduhr
EP4202566A1 (de) * 2021-12-21 2023-06-28 Omega SA Kompensation der gangvariation in einer armbanduhr
EP4386488A1 (de) * 2022-12-14 2024-06-19 Omega SA Kompensation der gangvariation in einer uhr

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2770315B1 (de) * 2013-02-21 2021-03-31 The Swatch Group Research and Development Ltd. Elektronische Vorrichtung, die mit Mitteln zur automatischen Erkennung eines Lecks ausgestattet ist
EP2957965A1 (de) * 2014-06-20 2015-12-23 The Swatch Group Research and Development Ltd. Vorrichtung zum halbdichten Verschließen
DE102015204613B4 (de) * 2015-03-13 2018-03-15 Levitation AG Verfahren zum Herstellen eines Uhrglases mit mindestens einem Schmuckstein
EP3121663B1 (de) * 2015-07-22 2021-03-03 Rolex Sa Verfahren zur dichtheitskontrolle einer uhr
CN106017804B (zh) * 2016-05-26 2019-01-18 青岛海尔股份有限公司 用于冷藏冷冻设备的气密性检查方法以及冷藏冷冻设备
CN106404313A (zh) * 2016-09-18 2017-02-15 惠州Tcl移动通信有限公司 检测防水设备的ipx7性能的方法以及防水设备
EP3316049B1 (de) * 2016-10-26 2019-11-27 The Swatch Group Research and Development Ltd Demontagestand für eine armbanduhr mit gesichertem verschluss
CN106248320A (zh) * 2016-10-30 2016-12-21 陈勇 水下电线连接防水装置中倒立灌的密封状态的检测装置
JP6705370B2 (ja) * 2016-12-22 2020-06-03 カシオ計算機株式会社 防水型電子機器
CN107179160A (zh) * 2017-05-31 2017-09-19 江苏金钿实业有限公司 一种用于手表防水性能的测试设备
CN107255550A (zh) * 2017-05-31 2017-10-17 江苏金钿实业有限公司 一种用于测试手表防水性能的测试方法
CN107748044A (zh) * 2017-10-13 2018-03-02 苏州佳世达光电有限公司 一种便于自身密封性能测试的防水装置

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RU2032888C1 (ru) * 1991-07-19 1995-04-10 Головное конструкторское бюро научно-производственного объединения "Энергия" им.С.П.Королева Способ контроля герметичности емкостей, работающих в вакууме при низких температурах, и устройство для его осуществления
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Publication number Priority date Publication date Assignee Title
US9310272B2 (en) 2013-02-21 2016-04-12 The Swatch Group Research And Development Ltd Electronic device provided with automatic leak detection means
EP2770380A1 (de) * 2013-02-21 2014-08-27 The Swatch Group Research and Development Ltd. Elektronische Vorrichtung, die mit Mitteln zur automatischen Erkennung eines Lecks ausgestattet ist
DE102015200549A1 (de) * 2015-01-15 2016-07-21 Zf Friedrichshafen Ag Schaltungsvorrichtung und Verfahren zum Überwachen einer Schaltungsvorrichtung
US11898942B2 (en) 2018-04-24 2024-02-13 Cressi-Sub S.P.A. Method for checking water sealing of instrumentation for underwater use
IT201800004833A1 (it) * 2018-04-24 2019-10-24 Metodo per il controllo della tenuta d’acqua nelle strumentazioni per uso subacqueo
WO2019207478A1 (en) * 2018-04-24 2019-10-31 Cressi-Sub S.P.A. Method for checking water sealing of instrumentation for underwater use
CN112074454A (zh) * 2018-04-24 2020-12-11 科越思潜水股份公司 用于检查水下使用的仪器的水密封的方法
EP3985452A1 (de) * 2020-10-16 2022-04-20 The Swatch Group Research and Development Ltd Vorrichtung zum messen eines relativen feuchtigkeitsgrads im gehäuse einer armbanduhr
CN114384013A (zh) * 2020-10-16 2022-04-22 斯沃奇集团研究及开发有限公司 用于测量手表外壳的包封内部的相对湿度水平的设备
US11940379B2 (en) 2020-10-16 2024-03-26 The Swatch Group Research And Development Ltd Device for measuring a relative humidity level inside the enclosure of a watch case
CN112763146A (zh) * 2020-12-29 2021-05-07 博众精工科技股份有限公司 一种水密性测试用承载治具、测试装置及测试方法
EP4202566A1 (de) * 2021-12-21 2023-06-28 Omega SA Kompensation der gangvariation in einer armbanduhr
EP4386488A1 (de) * 2022-12-14 2024-06-19 Omega SA Kompensation der gangvariation in einer uhr
WO2024126141A1 (fr) * 2022-12-14 2024-06-20 Omega Sa Compensation de la variation de marche dans une montre

Also Published As

Publication number Publication date
EP1529248A2 (de) 2005-05-11
WO2004019141A3 (fr) 2004-07-15
WO2004019141A2 (fr) 2004-03-04
US20050270908A1 (en) 2005-12-08
CN1675598A (zh) 2005-09-28
JP2005535902A (ja) 2005-11-24
KR20050035874A (ko) 2005-04-19
AU2003258575A1 (en) 2004-03-11
WO2004019141A8 (fr) 2005-02-10

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