EP0884660B1 - Sicherheitsventil für eine Uhr - Google Patents
Sicherheitsventil für eine Uhr Download PDFInfo
- Publication number
- EP0884660B1 EP0884660B1 EP19970109487 EP97109487A EP0884660B1 EP 0884660 B1 EP0884660 B1 EP 0884660B1 EP 19970109487 EP19970109487 EP 19970109487 EP 97109487 A EP97109487 A EP 97109487A EP 0884660 B1 EP0884660 B1 EP 0884660B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- safety valve
- valve according
- lip
- seal
- surroundings
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 21
- 238000013459 approach Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 230000009189 diving Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
Images
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
- G04B37/08—Hermetic sealing of openings, joints, passages or slits
- G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems
Definitions
- the present invention relates to a safety valve for a watch according to the preamble of claim 1.
- An overpressure inside the watch can have the following origin to have:
- a watch based on a situation, at which the internal pressure initially corresponds to the external pressure, exposed to a higher ambient pressure it is possible for some fabrics through sealing devices diffuse into the inside of the watch and so one Pressure increase inside the watch, or a pressure adjustment bring about. Is this clock then inside a relatively low ambient pressure again in a relatively short time exposed, it can now be exposed to the environment existing overpressure in the watch, for example, that the watch glass is blown off and sensitive Components of the watch are damaged.
- Such pressure changes can, for example, at occur during a dive, be it that the watch is in a gaseous environment, like a diving bell is the case, or is located directly in the water.
- a diving bell is the case, or is located directly in the water.
- the element helium to call its small atomic size. helium does not only penetrate the clock if it is one for Diving bells is exposed to the usual helium atmosphere, but dissolves in greater depths, i.e. at high Pressure, even from the water.
- the safety valve according to the invention is equipped with a lip seal that is so oriented is that the concentric, apron-shaped lip The lip points from the interior of the watch to the surroundings with increasing ambient overpressure to the pressed cylindrical surface surface area, from which excellent sealing results.
- the lip is reversed when there is overpressure in the watch advantageously deformed in such a way that they are cylindrical in shape Surface area is pushed away and forms a passage for an effective pressure reduction.
- the lip seal therefore works without additional, displaceable Elements as automatically operating Valve.
- O-rings have a circular seam due to the manufacturing process on the site of the largest perimeter located. This seam is low with seals Dimensions, as is the case in the watch industry, due to striking surface irregularities marked, which their sealing quality essential affect. In contrast, with a lip seal at the sealing points, i.e. in those areas that are in contact with the drilling wall, no seams available. This also contributes significantly to improvement the tightness.
- the CH-237 996 has an actuator in shown a watch that has a lip seal, that separates the interior of the clock from the surroundings.
- This Seal that has a base area as well as a has rotationally symmetrical lip, lies between a housing-fixed element and a movable Element. This lip that starts from the base area and points towards the surroundings, leads conically to one cylindrical surface area of the housing-fixed element and is below Preload on this cylindrical jacket Surface area.
- an additional seal provided the interior of the lip seal is arranged, for example, for the Submerge to form another water barrier.
- Contact areas of the seal are under the sealing area as well as the parts of the Safety valve or the clock, i.e. Surface areas of the seal as well Surface areas for example the exterior and Inner walls of the sleeve, the lid, the Watch case, etc., depending on the embodiment of the inventive safety valve.
- This additional seal is preferred Embodiment of the invention at ambient pressure automatically compressed by retreating the Lip seal towards the interior is used, a movable valve piston on which the lip seal is fixed on the to allow additional seal to act.
- the valve piston in the interior pressure opposite direction what a Relief of the additional seal means.
- the Lip seal has the additional advantage that it acts as a drive to add an extra Sealing element, such as an O-ring, at Seal overpressure increasingly and with interior overpressure to put in open position.
- This additional seal can be a preferred one Embodiment of the invention in the upcoming Ambient overpressure additionally compressed by hand by placing the safety valve over a screwable cover, which when screwing the Displacement of the valve piston towards the interior back and compression of the additional Sealing element allows.
- a spring can advantageously be arranged in this way be that the additional sealing element too without the influence of external pressure or the cover is in a pre-compressed state.
- an advantageous embodiment according to the Invention has that lying outside the middle part External thread of the sleeve on an annular groove, which at first screwing on the lid a deformation allows a threaded section so that the lid can no longer be lost.
- FIG. 10 An embodiment of the invention is as follows explained in more detail with reference to a drawing, wherein FIG an embodiment of the safety valve according to the invention 10 shows in axial section.
- Safety valve 10 has a continuous hollow sleeve 12, which is only partially in one shown middle part 14 or a housing of a clock is screwed in. In the clock there is one in the drawing interior 16 defined below that of the in the Drawing above surrounding 18 hermetically sealed is.
- the sleeve 12 has a shoulder 19 on the outside with respect to the axis 11 circular, the housing 14 facing bearing surface 20. Between this contact surface 20 and a corresponding one on the housing 14 provided, annular support surface 22 is a Metal sealing ring 23 is used, on this Place the interior 16 from the environment 18 seals.
- the sleeve On the inside, the sleeve has 12 holes of different sizes Diameter on, being on one, the environment 18 facing side of the sleeve 12 with a bore 28 a cylindrical wall 29 up to one inwards Directed flange 30 brings up an annular Has bearing surface 31, which inside a bore 32 is limited.
- the interior 16 facing side of the sleeve 12 is also a Bore provided, which is designated 34 and itself also extends to the inward flange 30, whereby also on this side of the flange 30 circular, limited internally by the bore 32 Support surface 35 is provided.
- sleeve 12 In the sleeve 12, on the other hand, is axially movable Piston 36 arranged in the region of the bores 32nd and 34 has a cylindrical shaft 38 which extends up to protrudes the area of the bore 28 and there conical in the direction of the housing and the axis 11 extends almost to the wall 29 of the bore 28 and a bearing surface 39 in the form of a truncated cone forms.
- the truncated cone jacket so oriented that the extent towards the environment 18 increases, between the axis 11 and this Truncated cone is an angle 40 of, for example, 60 °.
- cylindrical jacket-shaped area 46 which by an annular support surface 48 is completed.
- cylinder jacket-shaped area 50 to another Support surface 52 which extends radially outwards and again has the shape of a circular ring.
- a lip seal 56 which has an elastic, rotationally symmetrical lip 58, which is conical in the direction of the housing 14 and from the axis 11 to the wall 29 of the bore 28 expands and rests there under tension.
- the lip seal 56 can also be referred to as a cuff.
- the interior space 16 shown at the bottom in FIG. 1 leads to the O-ring 44. Between the O-ring 44, the lip 58, the sleeve 12 and the cover 82 is an intermediate area 65 included. Regarding the function of the lip seal 56 this gap 65 can, however Interior 16 can be assigned to the clock.
- the Lip seal 56 a second, rotationally symmetrical Surface area 66, which is also conical Approaches bore 28 in the direction away from the housing 14. Accordingly, both surface areas 60 and 66 point into one similar direction, i.e. towards the housing 14 and the axis 11 away. Between the second surface area 66 and the wall 29 is an angle 68 smaller 90 °, i.e. for example 45 °. Thus the lip is 58 wedge-shaped at an angle of, for example, 35 ° formed and has in the contact area with the wall 29 an approximately pointed edge area 67.
- the lip seal 56 has a base area 70 on the one under tension between the one opposite bearing surfaces 48 and 52 is arranged and on the other hand on the cylinder-jacket-shaped area 50 sitting.
- An arched transition zone 72 leads from of the bearing surface 52 initially in the direction of the interior 16 and with increasing distance from the axis 11 a curve descriptive towards environment 18 to finally in the second, rotationally symmetrical surface area 66 to pass.
- the bearing surface 52 Towards the surrounding area 18 and following the The bearing surface 52 is the piston 36 by itself tapered head 74 completed, one after externally convex end face 76 which has a stop forms.
- the head 74 is therefore conical, so that the lip seal 56 is placed over it in a simple manner can be.
- the sleeve 12 has a 78 interrupted external thread for receiving one with a short internal thread 80 provided, screwable protective cover 82, the external thread 78 according to FIG. 1 above the middle part 14, i.e. above the toothing 25 is arranged.
- This can be, for example trade a metric fine thread.
- the external thread 78 has a first, annular groove-shaped Break point 84, which is slightly longer than that Internal thread is 80. In the direction of the environment 18 in the external thread 78 a second, ring-shaped break point 86 provided that a length 88 of for example half a pitch of the external thread 78 has.
- Threaded section 90 of the external thread 78 leads about the end of the sleeve 12 facing the environment 18 for example, half a thread pitch so that the sleeve 12 at this end one with respect to the axis 11 has concentrically protruding bead 92, which corresponds to an elongated core of the threaded portion 90.
- the height of the bead 92 can also be approximately one correspond to half the thread pitch.
- the protective cover 82 To the left of the axis 11 is the protective cover 82 in or screwed position shown, the threaded portion 90 by screwing the protective cover 82 in the second break point 86 is shown pushed in and only a small free space 94 of the second Interruption point 86 left.
- the Interior 16 is facing, is a preload around the shaft 38 arranged compression coil spring 96 with at one end 98 on the bearing surface 35. you the other end 100 extends to the interior 16 facing end of the sleeve 12. This end 100 is in Contact with a pressure ring 102, which in turn in Contact with a circlip 104, which is in an annular groove 106 of the shaft 38 is arranged. Depending on the required Compressive force is a correspondingly strong spiral spring 96 provided.
- the lid 82 can be screwed shut before submerging be a first by thread engagement To form a dirt barrier, and on the other hand the O-ring 44 by means of a movement of the piston 36 in the direction of Interior 16 in addition to the compression effect of the Compression coil spring 96 to compress as it left the Axis 11 is shown.
- lip 58 becomes overpressure in the watch deformed so that they from the bore wall 29 to Axis 11 is pushed away and a quick one Relaxation of the interior 16 of the clock allows.
- the angles 64 and 68 entered in FIG. 1 do not have to correspond to the selected 10 ° or 45 °.
- the angle 64 of the wedge-shaped free space 62 is decisive for the opening behavior of the lip seal Internal pressure and must therefore always be less than Be 90 °.
- the angle 68 is crucial for that Closing and sealing behavior of the lip seal Outside overpressure and therefore must also be fundamentally be less than 90 °. So the lip itself has one Angle that is between 0 ° and 90 °, mentioned here must be that the shape of this lip is not one of those must correspond to Figure 1.
- the two surfaces 64 and 68 also parallel to each other run instead of in a pointed edge area 67 to flow.
- the edge area 67 also does not have to be pointed be trained, but can be according to requirements be relatively thick on the lip seal.
- the Dirt deflector function is however from a tapered Edge area 67 met particularly well.
- the lip 58 on the surface 29 of the sleeve 12 essentially only in their edge area 67.
- the contact area between lip 58 and surface 29 also be much larger and the Take the shape of a cylinder jacket.
- the lip seal 56 on the Piston 36 fixed.
- the base area of the lip seal in an inside in the Sleeve provided to fix groove while holding the lip leads conically to the axis and rests on the outside of the piston. outgoing of the figure 1 would have the cross section of the lip seal 56 therefore mirrored on a vertical axis become.
- the lip seal on the outside can be provided on the sleeve, i.e. for example between Sleeve and cover, the lip in this case to the clock is directed.
- the Cross section of the lip seal 56 for this purpose on one horizontal axis are mirrored.
- the lip seal in either the sleeve or the lid be fixed while her lip is each on the other component is applied.
- the arrangement of the lip seal is on the various places of the inventive safety valve possible, but its orientation is from vitally important.
- the elastic lip should be directed so that it closes when the external pressure is greater than the pressure in the The inside of the watch is and that it opens when there is internal pressure is present. One is generally sufficient for this extremely slight deformation of the lip.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Safety Valves (AREA)
Description
- bei Umgebungsüberdruck ausgezeichnet abdichtet,
- bei Umgebungsunterdruck einen raschen Druckausgleich ermöglicht,
- sowie Schmutzpartikel vom Dichtungsbereich und vom Uhreninnern fernhält.
- die Figur 1 eine Ausführungsform des erfindungsgemässen Sicherheitsventils im Axialschnitt.
Claims (16)
- Sicherheitsventil (10) für eine Uhr, welches ein gehäusefestes Element (12), ein weiteres Element (36) sowie eine zwischen den beiden Elementen (12, 36) angeordnete Dichtung (56) aufweist, die den Uhreninnenraum (16) von der Umgebung (18) abgrenzt,
wobei die Dichtung (56) eine Lippendichtung ist, die einen Basisbereich (70) sowie eine rotationssymmetrische Lippe (58) aufweist,
wobei der Basisbereich (70) in einem ersten (36) dieser Elemente (12, 36) ortsfest angeordnet ist,
wobei die Lippe (58) an einem zylindermantelförmigen Oberflächenbereich (29) eines zweiten (12) dieser Elemente (12, 36) unter Vorspannung anliegt,
um die Lippe (58) einerseits bei einem Innenraum-Überdruck zwecks Druckausgleich zwischen Innenraum (16) und Umgebung (18) vom Oberflächenbereich (29) zu lösen,
um anderseits die Lippe (58) bei einem Umgebungs-Überdruck zwecks Abdichtung des Innenraumes (16) gegenüber der Umgebung (18) verstärkt an den Oberflächenbereich (29) zu pressen, dadurch gekennzeichnet,dass das Sicherheitsventil (10) eine weitere Dichtung (44) aufweist, und,dass die weitere Dichtung (44) innenraumseitig der Lippendichtung (56) angeordnet ist und zwischen ihr und der Lippendichtung (56), bzw. zwischen der Umgebung (18) und dem Innenraum (16) einen Zwischenraum (65) bildet. - Sicherheitsventil nach Anspruch 1, dadurch gekennzeichnet, dass die Lippe (58) zwei rotationssymmetrische Oberflächenzonen (60, 66) aufweist, wovon eine erste (60) dieser Oberflächenzonen dem Uhreninnenraum (16) zugewandt und eine zweite (66) dieser Oberflächenzonen in Kontakt mit der Umgebung (18) ist.
- Sicherheitsventil nach Anspruch 2, dadurch gekennzeichnet, dass die erste Oberflächenzone (60) im wesentlichen, vom Basisbereich (70) ausgehend und in Richtung zur Umgebung (18) weisend, konisch zum zylindermantelförmigen Oberflächenbereich (29) führt, dass zwischen der ersten Oberflächenzone (60) und dem zylindermantelförmigen Oberflächenbereich (29) ein rotationssymmetrischer Freiraum (62) vorgesehen ist, der im Querschnitt im wesentlichen keilförmig ausgebildet und durch die Lippe (58) von der Umgebung (18) abgegrenzt ist, und dass die zweite Oberflächenzone (66) im wesentlichen, vom Basisbereich (70) ausgehend und in Richtung zur Umgebung (18) weisend, konisch zum zylindermantelförmigen Oberflächenbereich (29) führt.
- Sicherheitsventil nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die genannte zwei rotationssymmetrische Oberflächenzonen (60, 66) wesentlich parallel zueindander verlaufen.
- Sicherheitsventil nach Anspruch 3, dadurch gekennzeichnet, dass sich die beiden Oberflächenzonen (60, 66) in Richtung zum zylindermantelförmigen Oberflächenbereich (29) hin annähern und in einen im wesentlichen spitzförmig ausgebildeten Lippenrand (67) münden.
- Sicherheitsventil nach einem der vorangehenden Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die zweite Oberflächenzone (66) am Basisbereich (70) in eine Wölbung (72) übergeht.
- Sicherheitsventil nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das weitere Element (36) gegenüber dem gehäusefesten Element (12) mindestens in Richtung einer Achse (11) bewegbar ist.
- Sicherheitsventil nach Anspruch 7, dadurch gekennzeichnet, dass das bewegliche Element (36) vom gehäusefesten Element (12) mindestens teilweise umschlossen ist.
- Sicherheitsventil nach Anspruch 8, dadurch gekennzeichnet, dass der Basisbereich (70) im beweglichen Element (36) ortsfest angeordnet ist und der zylindermantelförmige Oberflächenbereich (29) innenseitig am gehäusefesten Element (12) vorgesehen ist.
- Sicherheitsventil nach Anspruch 8, dadurch gekennzeichnet, dass der Basisbereich (70) im gehäusefesten Element (12) ortsfest angeordnet ist und der zylindermantelförmige Oberflächenbereich (29) aussenseitig am beweglichen Element (36) vorgesehen ist.
- Sicherheitsventil nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die weitere Dichtung (44) ein O-Ring ist.
- Sicherheitsventil nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das weitere Element (36) ein, gegenüber dem gehäusefesten Element (12) mindestens in Richtung einer Achse (11) verschiebbarer, Kolben ist, auf welchem der Basisbereich (70) ortsfest angebracht ist, und dass der Kolben (36) die weitere Dichtung (44) komprimieren kann.
- Sicherheitsventil nach Anspruch 12, dadurch gekennzeichnet, dass ein auf dem gehäusefesten Element (12) verschraubbarer Deckel (82) vorgesehen ist, um zwecks Komprimierung der weiteren Dichtung (44) die Verschieben des Kolbens (36) zu ermöglichen.
- Sicherheitsventil nach Anspruch 13, dadurch gekennzeichnet, dass das gehäusefeste Element (12) einen Gewindeabschnittes (90) aufweist, der durch eine Unterbruchsstelle (86) vom übrigen Gewinde (78) getrennt ist, damit beim erstmaligen Zuschrauben des Deckels (82) eine Deformation des Gewindeabschnittes (90) möglich ist.
- Sicherheitsventil nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Feder (96) vorgesehen ist, welche das weitere Dichtungselement (44) vorspannt.
- Uhr mit dem Sicherheitsventil nach einem der vorangehenden Ansprüche.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19970109487 EP0884660B1 (de) | 1997-06-11 | 1997-06-11 | Sicherheitsventil für eine Uhr |
DE59711215T DE59711215D1 (de) | 1997-06-11 | 1997-06-11 | Sicherheitsventil für eine Uhr |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19970109487 EP0884660B1 (de) | 1997-06-11 | 1997-06-11 | Sicherheitsventil für eine Uhr |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0884660A1 EP0884660A1 (de) | 1998-12-16 |
EP0884660B1 true EP0884660B1 (de) | 2004-01-14 |
Family
ID=8226903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970109487 Expired - Lifetime EP0884660B1 (de) | 1997-06-11 | 1997-06-11 | Sicherheitsventil für eine Uhr |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0884660B1 (de) |
DE (1) | DE59711215D1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH708755A1 (de) | 2013-10-30 | 2015-04-30 | Richemont Int Sa | Halte- und Indexierungsvorrichtung für Uhren. |
EP3428740B1 (de) * | 2017-07-14 | 2020-09-02 | The Swatch Group Research and Development Ltd | Sicherheitsventil für armbanduhr |
EP3432084B1 (de) * | 2017-07-20 | 2020-09-16 | Omega SA | Sicherheitsventil für armbanduhr |
EP3483669B1 (de) | 2017-11-08 | 2020-12-30 | Omega SA | Sicherheitsventil für armbanduhr |
EP3483670B1 (de) * | 2017-11-08 | 2020-07-29 | Omega SA | Sicherheitsventil für armbanduhr |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH237996A (fr) * | 1942-12-21 | 1945-06-15 | Kehrer Edmond | Organe extérieur de commande étanche pour pièce d'horlogerie. |
CH624259B (fr) * | 1979-03-29 | Boninchi Sa | Poussoir etanche pour montre de plongee. |
-
1997
- 1997-06-11 EP EP19970109487 patent/EP0884660B1/de not_active Expired - Lifetime
- 1997-06-11 DE DE59711215T patent/DE59711215D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59711215D1 (de) | 2004-02-19 |
EP0884660A1 (de) | 1998-12-16 |
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