• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a safety valve (1) comprising: - a tube (3) intended to be fixed to a watch case (4), - a recessed head (2) rotatably mounted around the tube (3). ) - a first element fixedly mounted relative to the head (2) and - a second element integral with the head (2), characterized in that the first element and the second element each comprise one or more passages (12, 13) allowing the flow of a gas, the rotational movement of the head (2) for communicating the passages (12,13) of the first element and the second element for exhausting the gas from the inside to the outside the box in case of overpressure inside the box (4), or conversely to misalign the passages (12,13) of the first element and the second element to prevent the escape of the gas.
    公开号:CH713979A2
    申请号:CH00920/17
    申请日:2017-07-14
    公开日:2019-01-15
    发明作者:Pierry Vuille；Michel Willemin；Jean-Claude Martin
    申请人:Swatch Group Res & Dev Ltd；
    IPC主号:
    专利说明:

    Description
    Technical Field [0001] The present invention relates to a safety valve for a watch and more specifically for a watch intended for scuba diving. The present invention also relates to the watch provided with said valve.
    BACKGROUND [0002] Helium valves, also called helium valves, are present on certain diving watches to evacuate the helium infiltrated into the watch case during so-called saturation dives where the divers breathe a gaseous mixture containing helium and oxygen. This allows them to stay several days inside a bell or underwater station. During this time, helium can infiltrate the watch. In the absence of such a valve, the internal overpressure generated by the infiltrated helium can during the decompression phase generate damage to the watch, such as the loss of the glass which is staggered or breaks.
    [0003] Helium valves can be manual or automatic. Manual valves simply operate by tightening a sealing element such as a head, like a screw-down crown, on the middle part. The manual valves have the disadvantage that the watch is not sealed if the valve is not tightened after use. Automatic valves are triggered automatically, as their name suggests, when the pressure difference between the inside of the watch case and the outside environment reaches a critical threshold. A first type of automatic valve is that without locking possible by the user whose foundations are described in the document CH 492 246. The latter mounted in most cases flush with the middle part is in the form of a simple valve limiting the pressure inside the watch case. The disadvantage of this type of valve is its automatic opening without the possibility of blocking the escape of gas and thus also the entry of fluid into the watch, which is problematic when the decompression takes place in a humid environment. To overcome this drawback, there is a second type of automatic valve that can be controlled by the user via the screwing / unscrewing of the head inducing an axial displacement of the latter as described in EP 0 554 797. Optionally, this second Valve type can be integrated into a pusher as disclosed in EP 2,685,327.
    The valve of EP 0 554 797 comprises a recessed head provided with a skirt and a central core extended by a rod. The head can be screwed onto a tube attached to the middle part of the timepiece box. The tube comprises a bottom crossed with play by the rod. The core and the rod are surrounded by a coil spring. The spring is supported under the head by its first end. The second end of the spring is supported on a ring which in turn compresses a first seal disposed on the bottom of the tube. A second seal is disposed under the head to the right of the tube. When the head is screwed onto the threaded portion of the tube, the second seal is pressed against the tube. Therefore, the valve is inoperative and completely sealed thanks to the second seal and the effect of the spring on the first seal. When the head is unscrewed, the second seal under the head is no longer active and the seal at the bottom of the tube is likely to rise against the spring restoring force when the pressure inside the box becomes higher. than that prevailing outside. It follows the evacuation of gas from inside the watch to the outside.
    This second type of valve has the disadvantage that the head is mounted on the tube via a thread. The head being mainly on its life in rest position, ie in the screwed position, there is a risk that the user is no longer able to loosen it when the time comes. Also, excessive tightening of the head on the tube may in the long run damage the second seal positioned under the head. Conversely, too little tightening of the head may keep it in the open position. SUMMARY OF THE INVENTION [0006] In order to overcome the aforementioned disadvantages, the main object of the present invention is to propose a new helium valve which has the advantages of an automatic valve with intervention by the user while avoiding the need for use of a thread for the connection between the head and the tube.
    For this purpose, the present invention provides a valve according to claim 1.
    [0008] Preferably the valve comprises a head mounted in pure rotation around the tube, ie. without axial displacement of the head via a thread. The head is able to move between an open position where the gas is likely to escape out of the box in case of overpressure and a closed position where the exhaust gas is prevented. More specifically, the present invention relates to a valve comprising a first fixed element and a second movable element whose displacement is related to the angular displacement of the head. Both elements are each provided with one or more orifices or recesses. According to the invention, the relative movement between the two elements makes it possible to put in fluidic communication the orifices of each element when a gas escape is desired or conversely to block the escape of gas while avoiding to confront the orifices of each element.
    Other advantages will emerge from the features expressed in the claims, the detailed description of the invention illustrated below with the aid of the accompanying drawings given by way of non-limiting examples.
    Brief Description of the Figures [0010] Figs. 1 to 4 are sectional views of the helium valve according to the invention attached to a watch case. In figs. 1 and 2, the head is in the closed position with respectively in FIG. 1 a substantially equal pressure between the inside and the outside of the watch case and in FIG. 2 an overpressure inside the watch case. In figs. 3 and 4, the head is in the open position with, in FIG. 4, a pressure difference between the inside and the outside of the watch case causing the gas to escape towards the outside of the watch case.
    Figs. 5 and 6 show a variant of the helium valve of FIGS. 1 to 4. In FIG. 5, the valve is in the closed position with an internal pressure and an outside pressure to the watch case substantially equal. In fig. 6, the valve is in the open position with an overpressure within the box causing the exhaust gas to the outside of the watch case.
    DETAILED DESCRIPTION OF THE INVENTION [0012] The present invention relates to a helium valve, which will also be called a safety valve.
    The valve 1 shown inter alia in FIGS. 1 and 5 comprises a hollow cylindrical head 2 mounted on a tube 3 extending along an axis A, the tube 3 being intended to be fixed to the watch case 4 for example by screwing. The valve 1 comprises a rod 5 secured to the head 2 which extends inside the volume defined by the hollow head 2 and the tube 3 and passes through a seat 6 disposed in the lower part of the valve. The head 2 is rotatably mounted around the tube 3 between an open position where the gas is likely to escape outside the watch case and a closed position where the escape of gas is prevented. The open and closed positions are respectively shown in FIGS. 3 (as well as 4 and 6) and 1 (as well as 2 and 5).
    As shown in FIG. 1, the valve 1 has a double seal with, on the one hand, a seal 7 disposed within the tube 3 against the bearing surface 6, and, on the other hand, a polymer material 8 filling the internal volume of the valve in its upper part. The ring-shaped polymer material 8 fills a space (material 8a) delimited by the inner wall of the hollow head 2, the upper end of the tube 3 and the rod 5 and can extend partly within the tube 3 in the space (material 8b) delimited by the inner wall of the tube 3 and by the rod 5.
    The valve 1 comprises within the tube 3 in a chamber 9 a spring 10 wound around the rod 5 and bearing on one end on the polymer material 8 and at the other end on a ring 11 which compresses the seal 7 against the range 6 when the internal pressure P2 and the external pressure P1 are substantially equal or that P1 is greater than P2, for example under water.
    According to the invention, the polymer material 8 comprises at least one orifice 12 opening extending over the thickness of the annular material between the rod 5 and the inner wall of the tube 3 or the hollow head 2. In the configuration of FIG. 1, the polymer material 8 has two through holes 12a and 12b arranged non-contiguously at different levels in the material. A first port 12a passes through the material 8a and a second port 12b passes through the material 8b.
    The rod 5 comprises on a portion of its circumference a recess 13 for communicating the two through holes 12a and 12b when the recess 13 is disposed vis-à-vis said orifices 12a, 12b (Figure 3) .
    According to the invention, a path 14 is formed between the polymer material 8b and the inner wall of the tube 3 to allow the flow of gas from the chamber 9 to the second port 12b.
    In the example shown, the valve 1 comprises another spring 15 disposed around the rod 5 below the scope 6 towards the base of the rod. This spring has the function of applying a restoring force on the head to prevent axial displacement of the latter. Other non-elastic means such as a thrust bearing, etc. could be considered to fulfill this function. In addition, according to the invention, the angular displacement around the axis A of the head between the open and closed positions could be limited by a stop (not shown).
    The polymer material is made sufficiently elastic to fulfill its sealing function in the long term after being repeatedly pressed by the spring compression. For example, the choice of material can be made on polyurethanes, in particular on Asutane® (material of the Polymers Division of Swatch Group R & D), on elastomers (NBR or others), thermoplastics (PEEK, PA or others), thermosets or other composites, for example filled with fibers or nanoparticles (for example carbon, cellulose, etc.). According to the invention, the cylinder of polymer material can be driven into the tube and the rod driven into the cylinder.
    Figs. 1 to 4 illustrate the operation of the valve according to the invention. In figs. 1 and 2, the head 2 is in the closed position, i.e. that the two orifices 12a, 12b are not opposite the recess 13 formed in the rod 5. In the absence of a pressure difference between the inside of the watch case (pressure P2) and the environment outside (pressure P1 = P2), the seal 7 is compressed against the bearing surface 6 and the valve is completely sealed (Fig. 1). In the presence of an excess pressure inside the watch case (P2> P1), the seal 7 is no longer active under the action of the helium pressure lifting the latter (FIG 2), Nevertheless, the sealing of the valve is guaranteed by the polymer material 8.
    The rotation of the head about the axis A of a given angle of less than 360 °, which is 180 ° in the example illustrated in FIGS. 3 and 4, place the head in the open position. In the open position, the recess 13 is disposed vis-à-vis one end of the orifices 12a, 12b to put in fluid communication the inside and outside of the box. If the internal pressure is equal to the external pressure (P2 = P1), the seal 7 remains compressed against the bearing surface 6 and therefore the valve remains sealed (Figure 3). On the other hand, when the internal pressure exceeds the external pressure (P2> P1) by a predefined value sufficient to counter the restoring force of the spring 10, the seal 7 also becomes inoperative, which allows the gas to escape from the outside of the watch case to balance the pressures (Fig. 4). The gas flows from the base of the valve by the clearances between the tube 3 and the rod 5 and passes successively through the chamber 9, the path 14, the second orifice 12b, the recess 13, the first orifice 12a, and the interstice 19 between the outer wall of the tube 3 and the inner wall of the head 2 to be finally released outside the watch case 4.
    Other configurations of the valve according to the invention may be envisaged. For example, it is possible to make a single orifice opening into the polymer material and to provide a recess in the rod directly communicating the chamber comprising the spring and the opening opening when the head is in the open position. Several configurations are thus possible without departing from the scope of the invention.
    In this respect, FIGS. 5 and 6 show a variant of the valve 1 according to the invention based on the same principle of facing ports following the rotation of the valve head. In this variant, a first disk 16, for example made of ceramic, provided with one or more orifices 12 is placed under the head 2 and secured to the rod 5. Below this first disk 16, a second disk 17, for example ceramic, fixed and secured to the tube 3 is disposed. This second disc 17 is also provided with one or more orifices 12 intended to be positioned opposite those of the first disc 16 after displacement of the head 2 towards its open position. In the illustrated example, the orifices 12 pass through the thickness of each disk 16, 17 and allow the gas to escape via a gap between the head 2 and the first disk 16. Other configurations not shown are possible with, for example , an angled orifice passing through the first disc and allowing a lateral escape of the gas in the gap between the outer wall of the tube and the inner wall of the hollow head. Similarly the first integral disc of the rod could be positioned below the second fixed disc. Preferably, a porous membrane 18 such as a Gore-Tex® membrane is disposed between the two disks 16, 17 to ensure a watertightness of the valve even when the head is in the open position. Key [0025] (1) Valve (2) Head (3) Tube (4) Watch case (5) Rod (6) Scope (7) Seal (8) Polymeric material (a) Polymeric material in first space (b) ) Polymeric material in a second space (9) Chamber (10) Spring (11) Bushing (12) Orifice (a) First (b) Second (13) Recess in the rod (14) Path (15) Other spring (16) First Disc (17) Second Disc (18) Membrane (19) Interstice
    权利要求:
    Claims (17)
    [1]
    claims
    1. Safety valve (1) comprising: - a tube (3) intended to be fixed to a watch case (4), - a recessed head (2) rotatably mounted around the tube (3) and provided with a rod (5) extending in its recessed portion, - a first element mounted fixed relative to the head (2) and - a second element integral with the head (2), characterized in that the first element and the second element each comprise one or more passages (12,13) allowing the flow of a gas, the rotational movement of the head (2) for communicating the passages (12,13) of the first element and the second element for exhausting the gas from the inside to the outside of the box in case of overpressure inside the box (4) or vice versa to misalign the passages (12,13) of the first element and the second element to prevent the escape of gas.
    [2]
    2. Valve (1) according to claim 1, characterized in that the first element is a polymer material (8) disposed inside the recessed head (2) and in that the second element is the rod (5). ).
    [3]
    Valve (1) according to Claim 2, characterized in that the polymer material (8) fills a first space (8a) between one end of the tube (3), the head (2) and the rod (5). .
    [4]
    4. Valve (1) according to claim 2 or 3, characterized in that the polymer material (8) further extends into a second space (8b) between the tube (3) and the rod (5).
    [5]
    5. Valve (1) according to claim 3 or 4, characterized in that the polymer material (8) has a first orifice (12a) acting as a passage, the first orifice (12a) passing through the first space (8a) between the head (2) and the rod (5).
    [6]
    6. Valve (1) according to claim 4 or 5, characterized in that the polymer material (8) has a second orifice (12b) acting as a passage, the second orifice (12b) passing through the second space (8b) between the tube (3) and the rod (5).
    [7]
    7. Valve (1) according to any one of claims 2 to 6, characterized in that the rod (5) has on a portion of its circumference a recess (13) acting as a passage.
    [8]
    8. Valve (1) according to claim 7, characterized in that the recess (13) extends on the rod (5) to a height at least equal to the distance between the first orifice (12a) and the second orifice (12b).
    [9]
    9. Valve (1) according to any one of claims 6 to 8, characterized in that a path (14) is provided between the polymeric material (8) disposed in the second space (8b) and the tube (3) at the second orifice (12b).
    [10]
    10. Valve (1) according to any one of claims 2 to 9, characterized in that the polymer material (8) is selected from polyurethanes, elastomers, thermoplastics, thermosets, composites loaded or not.
    [11]
    11. Valve (1) according to claim 1, characterized in that the first element is a disc (17) disposed around the rod (5) and integral with the tube (3) and in that the second element is another disc (16) secured to the rod (5) and superimposed on said disk (17).
    [12]
    12. Valve (1) according to claim 11, characterized in that a porous membrane (18) is disposed between the two discs (16,17) to ensure a watertightness of the valve (1).
    [13]
    13. Valve (1) according to any one of the preceding claims, comprising means such as a spring (15) or a thrust ball to prevent axial displacement of the head (2).
    [14]
    14. Valve (1) according to any one of the preceding claims, characterized in that it comprises within the tube (3) a spring (10) wound around the rod (5) and bearing at one end on the first element and at another end on a ring (11) arranged around the rod (5).
    [15]
    15. Valve (1) according to claim 14, characterized in that it comprises a seal (7) disposed between the ring (11) and a bearing (6) formed in the tube (3).
    [16]
    16. Watch comprising a box (4) formed of a middle part, a bottom and a glass defining a sealed volume in which is mounted a clockwork movement provided with means for displaying a time information, characterized in that a valve (1) according to any one of claims 1 to 15 is mounted on the box (4).
    [17]
    17. Safety valve (1) comprising: - a tube (3) intended to be fixed to a watch case (4), - a recessed head (2) rotatably mounted around the tube (3) and provided with a rod (5) extending in its recessed portion, - a first element mounted fixed relative to the head (2) and - a second element integral with the head (2), characterized in that the first element and the second element each comprise one or more passages (12,13) allowing the flow of a gas, the rotational movement of the head (2) for communicating the passages (12,13) of the first element and the second element for exhausting the gas from the inside to the outside of the box in case of overpressure inside the box (4) or vice versa to misalign the passages (12,13) of the first element and the second element to prevent the escape of the gas and in that the placing in communication of said passa ge of the first element and the second element and vice versa is made without relative axial displacement of the first and second elements.
    类似技术:
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    LU86438A1|1987-12-16|MEMBRANE TAP
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    CH714005A2|2019-01-31|Crown head comprising a safety valve for a timepiece.
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    CH714006A2|2019-01-31|Safety valve, crown head and timepiece.
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    FR2618868A1|1989-02-03|Device forming a pressure-relief element for automatically regulating the pressure of a gaseous fluid
    FR2504974A1|1982-11-05|HYDRAULIC SLIDING VALVE FOR MINE JACK
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    同族专利:
    公开号 | 公开日
    US20190018369A1|2019-01-17|
    EP3428740A1|2019-01-16|
    JP2019020403A|2019-02-07|
    CN109253288B|2020-07-24|
    JP6533857B2|2019-06-19|
    US10691070B2|2020-06-23|
    EP3428740B1|2020-09-02|
    CN109253288A|2019-01-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1678780U|1954-04-15|1954-06-24|Rolex Montres|Dense elevator for clocks.|
    CH492246A|1967-11-06|1969-11-28|Rolex Montres|Waterproof watch|
    US4160463A|1977-10-13|1979-07-10|Baker Cac, Inc.|Flow line monitor pilot valve assembly|
    CH682199B5|1992-02-07|1994-02-15|Smh Management Services Ag|Safety valve for a timepiece diver.|
    CH682874B5|1992-02-07|1994-06-15|Smh Management Services Ag|Push button for coin diver watches.|
    CH685901B5|1993-11-25|1996-05-15|Smh Management Services Ag|Crown-button timepiece.|
    CH691936A5|1997-06-11|2001-11-30|Meco Sa Grenchen|Actuating means with seal for a watch.|
    DE59711215D1|1997-06-11|2004-02-19|Meco Sa Grenchen Grenchen|Safety valve for a watch|
    JP5279661B2|2009-08-28|2013-09-04|セイコーインスツル株式会社|Cell phone clock|
    JP5405945B2|2009-08-28|2014-02-05|セイコーインスツル株式会社|Cell phone clock|
    JP5285547B2|2009-08-28|2013-09-11|セイコーインスツル株式会社|Cell phone clock|
    JP5437875B2|2010-03-26|2014-03-12|セイコーインスツル株式会社|Cell phone clock|
    JP5324509B2|2010-03-26|2013-10-23|セイコーインスツル株式会社|Cell phone clock|
    EP2685327B1|2012-07-09|2018-09-05|Omega SA|Push button for timepiece including a valve|
    法律状态:
    2020-11-13| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    EP17181525.1A|EP3428740B1|2017-07-14|2017-07-14|Safety valve for a watch|
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