EP0899634B1 - Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler - Google Patents

Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler Download PDF

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Publication number
EP0899634B1
EP0899634B1 EP19970114985 EP97114985A EP0899634B1 EP 0899634 B1 EP0899634 B1 EP 0899634B1 EP 19970114985 EP19970114985 EP 19970114985 EP 97114985 A EP97114985 A EP 97114985A EP 0899634 B1 EP0899634 B1 EP 0899634B1
Authority
EP
European Patent Office
Prior art keywords
membrane
case
exterior
transducer
intermediate chamber
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
EP19970114985
Other languages
English (en)
French (fr)
Other versions
EP0899634A1 (de
Inventor
Jean-Pierre Mignot
Paul Dinnissen
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 EP19970114985 priority Critical patent/EP0899634B1/de
Priority to DE69723253T priority patent/DE69723253T2/de
Publication of EP0899634A1 publication Critical patent/EP0899634A1/de
Application granted granted Critical
Publication of EP0899634B1 publication Critical patent/EP0899634B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B37/0075—Cases with means to enhance sound transmission
    • 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 an apparatus likely to be immersed in a liquid such as water, such as devices worn on the wrist such as than watches. More particularly, the invention relates to such apparatus in the case of which is mounted a sound transducer.
  • the object of the invention is to provide an apparatus for type indicated above fitted with a sound transducer so that we can work with a broad spectrum sound, in particular the sound spectrum corresponding to the speech, while ensuring a high degree of tightness.
  • the membrane when the switchgear is out of the liquid, the membrane is mounted so that you can vibrate freely under the action of the sound energy to be received and / or emitted.
  • the apparatus being submerged, the membrane can deform under the action of hydrostatic pressure, certainly without ability to transmit sound energy, but protected against any deterioration due to the support provided by the support organ.
  • the invention will be illustrated in its application to a timepiece such as a wristwatch. It is clear, however, that the invention can be applied to any other apparatus must include at least one sound transducer, the apparatus also being capable of being submerged in a liquid such as water to a depth predetermined. Furthermore, in the example described, the sound transducer is a microphone, however a sound reproduction transducer can also be advantageously used with the invention.
  • the apparatus or watch 1 is mounted on a plate 8, the latter resting on the bottom 9 of the housing 2.
  • the plate 8 has an opening 10, of circular shape, in which is mounted microphone 11.
  • This can be of any type suitable, an electret microphone being preferred for its small dimensions. As an indication, such microphone can have a diameter of about 6 mm and a height of about 2 mm.
  • the microphone itself dit is encased in a cup 12 whose bottom 12a is drilled with holes 13 and acts as a support member.
  • the microphone 12 either a simple cylindrical body resting on a plate with through holes.
  • the opening 10 made in the plate 8 is provided above an inlet cavity 14, of general shape circular and opening out through a right-angled channel 15 to outside.
  • a first mounting ring 16 which, with a second mounting ring 17, is intended for hold a circular membrane 18 pinched or fixed with a another way between the two rings.
  • This membrane 18 thus sealingly separates the inlet cavity 14 from a intermediate chamber 19 communicating through the holes 13 with the microphone 11, while transmitting the sound vibrations coming from outside to this one.
  • the mounting ring 16 defines the volume of the chamber intermediate 19.
  • the mounting ring 17 is further axially resting against a shoulder 20 surrounding the inlet cavity 14.
  • the membrane 18 can be directly glued or fixed with a other way to ring 16 and ring 17 can be omitted.
  • the first mounting ring 16 has a radial groove 21 formed in its thickness.
  • the bottom 9 has on its side a groove 22 which follows the groove 21 and which leads to a pressure balancing pad 23. This can be mounted against a radial shoulder 24 provided on the side internal of a hole 25 made in the plate 8 on the external side from which the groove 22 opens.
  • the chamber 19 is thus in communication with the chip 23.
  • This tablet 23 is impermeable to liquids such as water but it is permeable to gases such as air at provided that the gas pressure changes slowly. All sudden change in gas pressure is therefore blocked by this patch. This can be done by example in sintered Teflon® or ceramic.
  • the case 2 of watch 1 also includes a device 26 communication of its interior space with the exterior.
  • this is a passage 27 in the plate 8 and bottom 9 and closed by a pad 28 which, like the pad 23, is impermeable to liquids such as water, but permeable to gases whose pressure varies slowly. It can be made in the same material as tablet 23.
  • the device thus arranged for communication of the intermediate chamber 19 with the outside only for slow variations in static gas pressure surrounding, keeps the membrane 18 operational, even if the watch is brought by the carrier at different altitudes or is carried in climatic conditions inducing such variations slow.
  • the pads 23 and 28 constitute low-pass filters which do not allow passage that variations in the pressure of gases such as air, very low frequency, typically 1/10 Hz and less.
  • room 19 is first in communication with the inside of box 2 and cannot communicate with outside (always only for low static gas pressure) only through the communication device 26.
  • This arrangement is preferred here since the watch described may include other organs also requiring compensation slow pressure. It can be for example a sound reproduction transducer.
  • the placing device in communication 26 can then be used for both transducers at the same time, which minimizes places in the case where communication to the exterior exists for gases such as air.
  • the membrane 18 is made of a little material elastic and it is not stretched between the rings of mounting 16 and 17 in order to guarantee freedom of vibration as wide as possible.
  • Material particularly suitable for membrane 18 is the Mylar®, its thickness can be between 2 and 50 ⁇ m, a preferred value being 10 ⁇ m. Its diameter is one little higher than that of microphone 11. Note that a such a membrane can transmit vibrations in a frequency range from 200 Hz to 5 kHz.
  • the behavior of the membrane 18 is as follows.
  • the membrane 18 When the watch is worn out of the water, the membrane 18 has a flat configuration in which it is distant from the grid formed by the bottom 12a of the cup 12. It can thus transmit without disturbances sound vibrations coming from outside to room 19 and from there to microphone 11 at through the holes 13 made in the bottom 12a.
  • the membrane 18 will deform due to an abrupt variation of the differential pressure, to assume a curved shape towards the bottom 12a, the path of pressure compensation described above not reaching fairly quickly to balance the difference in pressures. From a certain hydrostatic pressure value, the deformation of the membrane will be such that it will apply against the bottom 12a of the cup 12, this last forming an effective support preventing any deterioration, and in particular an irreversible deformation, membrane 18.
  • the transducer is a speaker
  • the characteristics of the membrane including thickness, diameter and material of which it is incorporated, will be adapted accordingly.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Claims (12)

  1. Dichtes tragbares Gerät, das bis zu einer vorgegebenen Tiefe in eine Flüssigkeit wie etwa Wasser eingetaucht werden kann, insbesondere dichtes Zeitmeßgerät, das ein Gehäuse (2) umfaßt, in dem ein Schallwandler (11) angebracht ist, derart, daß er in dichter Weise mit den Fluiden außerhalb des Gehäuses (2) über Schallenergie kommunizieren kann, dadurch gekennzeichnet, daß
    der Schallwandler (11) in dem Gehäuse (2) gegenüber einer verformbaren Membran (18) angebracht ist, die ihn in dichter Weise von einem Eintrittshohlraum (14, 15) trennt, der in dem Gehäuse (2) ausgebildet ist und mit der äußeren Umgebung in einer direkten Verbindung steht, und daß zwischen der Membran (18) und dem Wandler (11) eine Zwischenkammer (19) ausgebildet ist, die eine Verformung von der Membran unter der Wirkung eines äußeren statischen Drucks aufnimmt und auf seiten des Wandlers durch ein Halteorgan (12a) begrenzt ist, das in dem Behälter fest angebracht ist und die Verformung der Membran bei Ausübung des äußeren Drucks begrenzen kann.
  2. Gerät nach Anspruch 1, dadurch gekennzeichnet, daß das Halteorgan eine Platte (12a) ist, die mit Löchern (13) durchsetzt ist, um von der Eintrittskammer (14, 15) über die Membran (18) übertragene oder in entgegengesetzter Richtung übertragene Schallenergie durchzulassen.
  3. Gerät nach Anspruch 2, dadurch gekennzeichnet, daß die Platte den Boden (12a) einer Schale (12) bildet, in der der Schallwandler (11) angeordnet ist.
  4. Gerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Membran (18) zwischen zwei Montageringen (16, 17) gehalten wird, die an dem Halteorgan (12a) befestigt sind, wobei sich der Ring (16) auf seiten des Wandlers (11) befindet und auf der Innenseite das Volumen der Zwischenkammer (19) bestimmt.
  5. Gerät nach Anspruch 4, dadurch gekennzeichnet, daß die Zwischenkammer (19) mit der äußeren Umgebung über Mittel (23) in Verbindung steht, die nur in Gegenwart langsamer Änderungen des Differenzdrucks zwischen der Zwischenkammer (19) und der äußeren Umgebung eine Gaszirkulation zulassen.
  6. Gerät nach Anspruch 5, dadurch gekennzeichnet, daß die eine Gaszirkulation zulassenden Mittel durch wenigstens ein Plättchen (23) gebildet sind.
  7. Gerät nach Anspruch 5, dadurch gekennzeichnet, daß die eine Gaszirkulation zulassenden Mittel durch einen Leckweg gebildet sind, der die Zwischenkammer (19) mit der äußeren Umgebung verbindet.
  8. Gerät nach Anspruch 6, dadurch gekennzeichnet, daß die Zwischenkammer (19) mit dem Innenraum des Gehäuses (2) über ein erstes der Plättchen (23) in Verbindung steht und daß das Innenvolumen des Gehäuses (2).mit der äußeren Umgebung über ein zweites (28) der Plättchen in Verbindung steht.
  9. Gerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Membran (18) aus Mylar® hergestellt ist.
  10. Gerät nach Anspruch 9, dadurch gekennzeichnet, daß die Membran (18) eine Dicke aufweist, die im Bereich von 2 bis 50 um liegt, und vorzugsweise eine Dicke von 10 µm aufweist.
  11. Gerät nach einem der Ansprüche 6 und 8 bis 10, dadurch gekennzeichnet, daß das Plättchen aus gesintertem Teflon® oder aus Keramik hergestellt ist.
  12. Gerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schallwandler ein Mikrophon (11) oder ein Lautsprecher ist.
EP19970114985 1997-08-29 1997-08-29 Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler Expired - Lifetime EP0899634B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19970114985 EP0899634B1 (de) 1997-08-29 1997-08-29 Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler
DE69723253T DE69723253T2 (de) 1997-08-29 1997-08-29 Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970114985 EP0899634B1 (de) 1997-08-29 1997-08-29 Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler

Publications (2)

Publication Number Publication Date
EP0899634A1 EP0899634A1 (de) 1999-03-03
EP0899634B1 true EP0899634B1 (de) 2003-07-02

Family

ID=8227287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970114985 Expired - Lifetime EP0899634B1 (de) 1997-08-29 1997-08-29 Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler

Country Status (2)

Country Link
EP (1) EP0899634B1 (de)
DE (1) DE69723253T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW503629B (en) 2000-03-02 2002-09-21 Asulab Sa Device for implanting a microphone and a pressure compensating member in a telephone watch
DE60007504T2 (de) * 2000-03-02 2004-11-18 Asulab S.A. Armbanduhr-Telefon mit einem Mikrofon und einem Druckausgleichselement
US20060146650A1 (en) * 2003-01-08 2006-07-06 Asulab S.A. Telephone-watch with improved acoustics
US7414922B2 (en) 2003-01-08 2008-08-19 Asulab S.A. Water-resistant portable apparatus comprising an electroacoustic transducer
DE102006058736B3 (de) * 2006-12-13 2008-01-31 Mci Gmbh & Co. Kg Wasserdichter Lautsprecher und Kommunikationsvorrichtung mit einem wasserdichten Lautsprecher
DE102008023854A1 (de) * 2008-05-16 2009-08-20 Continental Automotive Gmbh Vorrichtung zur Schallerzeugung und Kommunikationseinrichtung, insbesondere für ein Fahrzeug, mit einer derartigen Vorrichtung zur Schallerzeugung
JP2017047403A (ja) * 2015-09-04 2017-03-09 日東電工株式会社 携帯用電子機器の洗浄方法、並びに防水通気膜及び／又は防水通音膜として機能する膜の検査方法及び製造方法
US11614716B2 (en) 2019-09-23 2023-03-28 Apple Inc. Pressure-sensing system for a wearable electronic device
US11860585B2 (en) 2020-06-17 2024-01-02 Apple Inc. Wearable electronic device with a compressible air-permeable seal
DE102023211283A1 (de) 2023-11-14 2025-05-15 Robert Bosch Gesellschaft mit beschränkter Haftung Akustische Vorrichtung mit Druckausgleich

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1127360A4 (de) * 1960-10-07 1963-11-15
JPS5520464A (en) * 1978-08-01 1980-02-13 Seiko Instr & Electronics Ltd Portable watch with acoustic device
JPS58206998A (ja) * 1982-05-27 1983-12-02 Seiko Instr & Electronics Ltd 圧力センサ付電子腕時計
US4872148A (en) * 1984-03-08 1989-10-03 Polaroid Corporation Ultrasonic transducer for use in a corrosive/abrasive environment

Also Published As

Publication number Publication date
DE69723253T2 (de) 2004-04-22
EP0899634A1 (de) 1999-03-03
DE69723253D1 (de) 2003-08-07

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