• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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  • 优先权
    • 专利摘要:
    The invention relates to a valve cup for a pressure vessel, having an outer face and an inner face and being provided - with a peripheral bearing edge (51) for placing the cup on a housing - with a central opening for the passage of an outlet rod (31) of the product, - of a descending wall in the extension of the bearing edge, and - of a bottom wall between the descending wall and the central opening. According to the invention, the bottom wall comprises at least one frustoconical peripheral part, the outer face of which is concave.
    公开号:BE1027458B1
    申请号:E20195836
    申请日:2019-11-25
    公开日:2021-02-23
    发明作者:Hervé Bodet；Eric Gaillard
    申请人:Lindal France Sas；
    IPC主号:
    专利说明:

    Description Field of the Invention The invention relates to a valve cup for a pressure vessel.
    The valve cup has an exterior face and an interior face and it is provided with - a peripheral bearing edge for placing the cup on a housing, - a central opening for the passage of a product outlet rod , - of a descending wall in the extension of the bearing edge, and - of a bottom wall between the descending wall and the central opening.
    STATE OF THE ART The valve cups according to the preamble are commonly used for pressurized containers, in particular for aerosol generators.
    A valve body is attached to the cup forming an internal chamber in which there is a spring, a seal and between the two at least part of the valve.
    The spring pushes the valve against the seal so that the valve is closed.
    To insert the seal, the spring and the valve, it is essential to have an access opening before final assembly.
    Traditionally, the cup is provided with a dome which is crimped on the top of the valve body provided for this with an annular extra thickness at its top.
    This method works very well when the cup is metallic.
    However, the current trend is to eliminate metal parts and replace them where possible with polymer in order to facilitate the recycling of aerosol dispensers.
    Valves are therefore known in which the cup is also made of polymer.
    In this case, it is possible to have a one-piece assembly consisting of the valve body and the cup, the internal space then being closed by a washer welded from above.
    Such a valve is known from document WO 2016/202754 A1 for example.
    The drawback of this solution lies in the fact that if the weld between the washer and the cup were defective, the washer could come off and be forcefully expelled at the risk of injuring its user.
    In other variations, the valve body is snap-fastened to the cup.
    As an example, document FR 2 508 136 A1 will be cited. This requires more complex molds to make on the one hand the snap-on tabs on the cup or the valve body and on the other hand the corresponding recesses on the other part. In addition, the parts must be oversized to take into account the height of the fastener.
    Objective of the invention The objective of the invention is to provide an economical cup to manufacture. Another objective is to design the cup which, when used for a male valve, at least partially protects the protruding part of the stem of a male valve. Disclosure of the invention This objective is achieved by the valve cup of the invention in which the bottom wall comprises at least one frustoconical peripheral part, the outer face of which is concave. The cup is preferably configured to receive on the interior face a valve body. In other words, the inner face of the valve cup can be provided with means for fixing a valve body. These means can in particular be a material to which the valve body can be glued or welded. The bottom wall may include a flat central part located between the frustoconical peripheral part and the central opening. Although this flat central part can have advantages, in particular for fixing a valve body, it is however not essential. The edge of the bottom wall which surrounds the central opening may be in alignment with the frustoconical peripheral part or, if the bottom wall comprises a flat central part, in alignment with said flat central part. In other words, the edge can be in the same frustoconical surface as the peripheral part or in the same plane as the central part. However, it may prove useful to roll up the edge to prevent the edge of the cup at the central opening from coming into contact, for example, with a residue of product which has fallen into the cup. For this, provision can be made for the edge of the bottom wall which surrounds the central opening to be rolled up, forming a rolled edge, preferably rolled up on the side of the outer face of the cup. Thus, the edge of the edge of the cup surrounding the central opening is located at a distance, preferably above, from the bottom wall. The supporting edge of the cup may be provided with an annular cavity into which the neck of a housing can penetrate. This solution will be preferred for example if an O-ring is placed between the cup and the neck of the housing. Otherwise, the peripheral end of the supporting edge may be in the form of a flat ring and / or a ring whose wall is inclined towards the center of the cup. In other words, the bearing edge does not descend after reaching its highest point. The inclined wall may for example be frustoconical or partially toric. Its inner face preferably has substantially the dimensions and the shape of the neck of the housing for which it is intended.
    The inner face of the cup at least can be made of polymer, preferably polypropylene or another polyolefin (PE, PET, TPE), virgin, recycled or biobased. This makes it possible on the one hand to serve as a seal if the cup is fixed to the housing by expanding, and on the other hand to weld a valve body on the inner face of the cup as will be presented below.
    The outer face of the cup at least may be metallic, preferably aluminum or tinplate. This allows the cup to be fixed by expanding. In addition, this metal layer gives the cup sufficient rigidity to withstand the pressure prevailing in the pressure vessel. If necessary, reinforcing ribs can be provided on at least one face of the cup, preferably the outer face.
    The invention also relates to a valve provided with a cup according to the invention. Such a valve consists of a cup of the invention, of a valve body in which are placed a spring, a valve and a valve seal, the valve body being fixed on the inner face of the cup. According to the invention, the valve seal is pressed against the inner face of the bottom wall of the cup, surrounding the central opening, and the valve body is fixed to the inner face of the bottom wall by welding or by gluing. The valve body can be welded to the flat central part of the bottom wall or to the frustoconical peripheral part of the bottom wall.
    When the valve is a male valve, the valve is constituted by the nozzle and a protruding part of the nozzle protrudes from the outer face of the cup through the central opening. In this case, at least the lower part of the projecting part of the nozzle, preferably at least half of this projecting part, is located in the cavity defined by the plane passing through the top of the bearing edge, the descending wall and the back wall.
    In a preferred embodiment of the invention, at least before the valve is mounted on a housing to form a container, all of the protruding part of the nozzle is located in the cavity. In this case, the cavity is preferably configured to be closed at the latest after conditioning the pressure vessel by a removable protection, preferably a peelable film or a cap.
    The valve body may comprise a tubular body provided - at one end with an annular tapered edge, which tapered edge bears tightly against the valve seal while surrounding the central opening, as well as - with a fixing ring by which the valve body is welded to the cup.
    The tubular body may comprise a cylindrical wall provided at its upper end with the tapered edge and extending at the other end by a wall tapering in the direction opposite to the tapered edge.
    Brief description of the figures The invention is described in more detail below with the aid of the figures which show: Fig.1 an exploded view of a male-type valve provided with a cup according to the invention; Fig. 2 a sectional view of the valve of FIG. 1; Fig.3 a sectional and perspective view (a) of the valve body of the valve of Figure 1, and (b) of the male valve stem; Fig.4 a sectional and perspective view of the valve cup of Figure 1; Fig. 5 a sectional view of a female type valve provided with a cup according to the invention, showing (a) on the left a cup with a rolled central edge and (b) on the right a cup with a single central edge ; Fig. 6 a sectional view of a high flow type valve provided with a cup according to the invention, showing (a) on the left a cup with a rolled central edge and (b) on the right a cup with a rim simple central; Fig. 7 a sectional view of a valve of the male type provided with a cup according to the invention, the bottom of which consists exclusively of a frustoconical part, showing (a) on the left a cup with a rolled central edge and (b) on the right a cup with a simple central edge; Fig.8 a sectional view of a first cup with a rolled central edge and short peripheral edge; Fig. 9 a sectional view of a second cup with a rolled central edge and an enveloping peripheral edge; Fig. 10 a sectional view of a third cup with a simple central edge and a short peripheral edge;
    Fig. 11 a sectional view of a fourth cup with a short peripheral edge and whose bottom consists exclusively of a frustoconical part, showing (a) on the left a cup with a rolled central edge and (b) on the right a cup with a single central edge; Fig. 12 is a sectional view of the valve of Fig. 1 expanded onto a housing forming a pressure vessel. Detailed disclosure of the invention The invention relates to a valve cup for a valve (1) for a pressure vessel. The valve (1) consists mainly of: - a cup (50) and - a valve body (10) in which are placed: »a spring (20), *» a valve (30) and + A valve seal (40).
    Globe valves are sealed by a valve which must be moved away from the valve seal to allow product to exit the valve. The product leaves the valve through a small tube, called a stem or rod, which passes through a central opening in the cup.
    The valve (1) of the invention can be used in all positions. In the figures illustrating this application, the valve is shown with the stem or the opening for access to the female valve directed upwards. The references "top" / "bottom" or "upper" / "lower" have only a relative value in relation to the representations of the attached figures. It goes without saying that the valve can be used in all positions and that what is up in the position shown here will not necessarily be in use. Furthermore, the valve extends longitudinally with respect to a main axis (A), vertical in the representations of the accompanying figures. The terms “radial”, “axial” and “transverse” refer to this main axis (A).
    As with any cup valve, the cup (50) forms a separation between the side of the valve intended to be placed inside the housing and the other side intended to be outside the housing. The terms “inside” and “outside” refer to the elements located on the inside or outside of the cup. The terms “internal” and “external” refer to a particular component (in particular the valve body) and define what is in or outside said component, regardless of whether it is a component located on the valve body. inner or outer face of the cup.
    The examples shown in Figures 2 and 7 are valves of the male type in which the valve is an integral part of the stem (30), part of the stem (31) of which protrudes out of the valve. As shown in Figure 5, the invention can also be applied to a female-type valve having as valve a seat which is located in the valve body and which must be actuated by an external rod (generally that of a diffuser. ) entering the valve through a central opening. The invention can also be used for a valve of the high flow type such as that illustrated in FIG. 6. To simplify the description, the term “stem” is used to designate a stem provided with a valve by forming a valve stem. male or male stem, while the term “stem” is used more generally to designate the small outlet tube which passes through the central opening of the cup, whether this stem is part of a male valve stem or a diffuser for female valve.
    The valve body (10) mainly consists of a tubular body (11) partially closed at a first end, called the lower end, by a bottom wall (12) having an inlet opening (121). The tubular body (11) and the bottom wall (12) together define an internal chamber (13). Vertical ribs (131) can be provided in the bottom of the internal chamber, near the bottom wall. These ribs project radially from the tubular body towards the center of the internal chamber forming a receiving space in which a first end of the spring (20) can be received and retained radially. A fixing pin (14) can be provided on the outer face of the bottom wall (12) for fixing, for example, a dip tube or anti-sagging means. This tenon (14) is tubular in shape and surrounds the inlet opening (121).
    To save material, it is preferable that the wall of the tubular body (11) narrows in the part carrying the vertical ribs (131). In particular, this part can be frustoconical. Thus, the tubular body (11) and the internal chamber (13) essentially consist of an upper cylindrical part continuing downwards by a narrowing part (here frustoconical) closed at the bottom by the bottom wall (12). In prior art valve bodies, the tubular wall and the internal chamber remain cylindrical up to the bottom wall. This narrowed portion contributes to reducing the cost of manufacturing the valves of the invention.
    At least one opening (112) may be provided in the tubular body (11), which opening forms a passage bringing the outer face and the inner face of the tubular body into contact. This opening, which is not compulsory, serves as an additional gas outlet to improve the quality of the spraying.
    The second end of the tubular body (11) ends in a tapered edge (111). It is surrounded by a fixing ring (15) which consists of a tubular wall connected to the second end of the tubular body by a transverse wall (151). This transverse wall is for example parallel to a plane perpendicular to the main axis (A). It can be solid as in the present example, or crenellated if it is not necessary to ensure a seal between the two faces of this transverse wall. The annular wafer (upper face) (152) of the fixing ring (15) is preferably provided with at least one extra thickness of material going all the way around the ring and serving as an energy director during ultrasonic welding of the ring. valve body on the cup. In the example presented here, there are two rings of material allowance (152a, 152b).
    The cup (50) consists of a plate provided - with a peripheral bearing edge (51) intended to place the cup on a housing not shown, - with a central opening (52) intended for the passage of a product outlet rod, and - a wall which extends between the bearing edge (51) and the central opening, being divided into "a descending wall (55), and" a bottom wall (56 ) domed.
    The cup has a convex inner face (501) and a concave outer face (502). The descending wall (55) and the bottom wall (56) form a cavity (503) on the outer face (502) of the cup which is limited by the plane passing through the top of the bearing edge (51), which apex corresponding to the part of the bearing edge furthest from the central opening (52), considered along the central axis (A).
    The descending wall (55) can be substantially cylindrical as in the examples presented here, or slightly frustoconical. It serves on the one hand to move the central opening (52) away from the bearing edge (51) by helping to make the cavity (503) deeper, and on the other hand, in certain cases, to fix the cup to the housing neck, especially in the event of expansion.
    With the exception of the cup of Figures 7 and 11, the domed bottom wall (56) is divided into a central portion (561) planar surrounding the central opening (52) and an inclined peripheral portion (562) located between the central portion. plane (561) and the descending wall (55). The peripheral part (562) is preferably frustoconical. As shown in Figures 7 and 11, the cup can also have an entirely frustoconical bottom. The inclination of the frustoconical part is such that the inner face of the bottom wall is convex and / or that the outer face of the bottom wall is concave.
    The inclination of the frustoconical part (562) on the one hand serves to move the central opening (52) away from the bearing edge (51) and on the other hand allows the cup to resist the pressure prevailing in the container under pressure.
    The supporting edge (51) is used to place the cup on the neck (61) of the housing (60). The outer diameter of the supporting edge must be greater than the diameter of the neck so that the cup does not fall into the housing. In the case of expanded cups, the neck of the housing is generally rolled up and the bearing edge surrounds at least the internal part of the neck. It may be preferable for the supporting edge to surround the neck on either side of its top. In this case, the bearing edge (51) forms an enveloping annular cavity (511) into which the neck of the housing can penetrate. This is the case with the cup in Figure 9. When the cup is expanded, the bearing edge (51) substantially conforms to the shape of the neck by wrapping it beyond the top of the neck.
    When a specific seal is provided between the cup and the neck of the housing, the latter is preferably placed in the annular cavity (511) of the cup of FIG. 9. It is then necessary to compress the seal during expansion. In such a case, it is common to exert a force which may be in the order of 75 kg on the cup when expanding.
    To save material, however, it is possible to dispense with this enveloping end and the annular cavity (511). It suffices for the bearing edge (51) to be wide enough to retain the cup on the neck of the housing when fixing the cup to the housing.
    The inner face (501) of the cup may be provided with a layer (54) which can serve as a seal. For example, this layer can be made of polymer, preferably polypropylene or another polyolefin (PE, PET, TPE), virgin, recycled or biobased, of food grade or not. In such a case, it is not necessary to exert such a large force on the cup during expansion, because the sealing is carried out essentially at the interface between the descending wall (55) and the inside of the neck at the bottom. level of expansion. This is a substantially radial force which does not subject the bearing edge to as high a stress as for the gasket cups in the annular cavity. The force exerted on the cup when attaching is mainly used to hold it in place and does not need to be very strong. It is therefore possible to dispense with the annular cavity (511), the bearing edge simply having to be sufficient to retain the cup despite the pressure exerted to hold the cup in place. This measure saves the material necessary to form the annular cavity.
    In a simple embodiment of the cup, the edge (563) of the bottom wall (56) surrounding the central opening (52) is in alignment with this bottom wall, that is to say that 'it is in the plane of the flat central part (561), or in the same frustoconical envelope as the frustoconical peripheral part (562) if there is no flat central part. This is the case with the cups shown on the right in Figures 5, 6, 7 and 11, or on the cup in Figure 10.
    However, this solution has the drawback that a remainder of product which would have fallen into the cup could be in contact with the sharp edge of the edge of the cup at the level of the central opening, at the risk of this edge corroding if the cup is at least partly metallic. It may therefore be preferable in certain cases to roll up the edge (564) of the central part (561) by forming a rolled edge (521). This rolled edge is preferably straightened towards the outer face of the cup as shown on the left in Figures 5, 6, 7 and 11, or on the cup of Figures 2, 4, 8 and 9. Regarding Figures 5 to 7 and 11, it should be understood that they each represent two types of cups, and that a cup has either a single edge (as shown to the right of the figures) or a turned-up edge (as shown to the left of the figures).
    The valve cup is therefore preferably configured so that the valve body is fixed on a convex or planar part of its inner face, but not in a concave part as in the state of the art. The central opening (52) on the outer face side (502) of the cup is sufficiently low in the cavity and away from the plane defined by the top of the bearing edge, to allow the protruding part of the stem (31) to be at least partly located in said cavity (503). The entrance to the central opening (52) on the inner face of the cup is located at the lowest level of the cup, and at the level furthest from the plane formed by the top of the bearing edge. In other words, the product outlet rod leaves the valve body (10) and enters this central opening (52) at the lowest level of the inner face of the cup. Expressed still differently, the interface between the central opening (52) and the internal chamber (13) of the valve body is located at the lowest level of the internal face of the cup.
    This does not necessarily imply that the valve body is also attached to the lowest level of the cup. Indeed, if the fixing ring (15) is not fixed on the flat central part
    (561), but on the frustoconical peripheral part, the interface between the cup and the valve body is located at a higher level than the interface between the central opening (52) and the internal chamber (53).
    In general, the rod which passes through the central opening (52) can carry the valve to be inserted into the valve body if it is a male type valve (male valve stem), or it can be carried by a diffuser intended to actuate the valve if it is a female type valve.
    The cup can be made entirely of polymer. It is also possible that it consists, as in the present example, of an outer layer (53) of metal and an inner layer (54) of polymer. For example, a metal and polymer laminate can be chosen. In particular, a laminate of 0.25 mm of steel and 200 µm of PP is particularly well suited to the invention.
    When the cup is made at least partly of metal, it is possible to expand it on the neck of the housing. In this case, the descending wall (55) is deformed towards the outside of the cavity of the cup. This operation can cause a slight deformation of the cup and a rise of the central opening (52) and consequently of the stem (30) or of the seat of the valve. This slight rise can be taken into account when choosing the stem or diffuser to use to open the valve.
    It is also possible that the cup is glued or welded to the housing. In this case, the fixing can be done at the level of the bearing edge and / or of the descending wall.
    The cup can be defined by its dimensions, in particular the following dimensions: D1 External diameter of the cup, measured either at the point where the bearing edge descends to form an annular cavity (511) as in FIG. 9, or at the flat or inclined peripheral end when the bearing edge does not have a cavity for the neck of the housing, as in FIGS. 8 and 10 for example; D2 Diameter of the descending wall, measured in its widest part; D3 Diameter of the junction between the frustoconical peripheral part (562) and the flat central part (561) of the bottom wall; D4 Internal diameter of the central opening (52); 3 D5 Diameter of the outer edge of the annular cavity (511);
    H1 Total height of the cup defined as being the distance between the projection on the central axis (A) of the top of the outer face of the bearing edge (51) and the projection on the central axis (A) of the inner face of the cup at the central opening (52); H2 Distance between the projection on the central axis (A) of the top of the outer face of the bearing edge (51) and the projection on the central axis (A) of the bottom of the descending wall (55); H3 Distance between the projection on the central axis (A) of the top of the rolled edge (521/564) and the projection on the central axis (A) of the inner face of the cup at the level of the central opening (52 ); H4 Contact height before mounting the cup on the housing, defined as being the distance between the projection on the central axis (A) of the top of the stem (31) and the projection on the central axis (A) of the top of the outer face of the bearing edge (51); H5 Depth of the annular cavity receiving the edge of the case.
    By knowing H1 and H2 on the one hand and D2 and D3 (or D4 when there is no flat central part (561)) on the other hand, we can determine the angle of inclination of the peripheral part ( 561) frustoconical of the bottom wall.
    The table below shows examples of dimensions. | | 2500-2630 | 86 | # ® | 2480 | 2600 [= | 260-2480 | 1800 | M | [3rd | 280-800 | 4 | 8 | w | 3w Li em | | es | to | su | 886 | 5m | 8 [we | ae | | M | ae | Li | ww | 108
    The stem (30) is of current form.
    It consists of a cylindrical wall (31) open at its upper end (311) and closed at its lower end, forming an outlet channel for the product.
    One or more orifices (312) placed at the bottom of the outlet channel pass radially through the cylindrical wall to bring the internal face and the external face of said cylindrical wall (31) into contact. The cylindrical wall (31) constitutes the product outlet rod. This cylindrical wall continues with the part serving as a valve which comprises a crown (32) of larger diameter having on its external face vertical channels or vertical ribs allowing the product to bypass the crown. The outer casing of this crown has a diameter slightly less than the internal diameter of the tubular body (11) of the valve body so that it can enter it while being guided. On its upper annular face, the crown (32) is provided with a sealing rib (321) to seal with the valve seal (40). The crown (32) continues downwards through a guide pin (33) intended to cooperate with the second end of the spring (20). The seat of female valves and the grommet of high flow valves are also common.
    The valve seal (40) is also a classic part. This is an annular seal, the internal diameter of which is chosen to tightly enclose the cylindrical wall (31) of the stem or the stem of a diffuser. The outer diameter is chosen so that the entire tapered edge (111) of the tubular body of the valve body can be sealed against the valve seal (40). In the present example, the valve seal takes place in the space delimited on the one hand by the internal face of the fixing ring and on the other hand by the transverse wall (151).
    The spring is wedged between the bottom wall (12) of the valve body and the guide pin (33) of the stem or of the seat. The male valve of the invention is assembled as follows. The spring (20) is placed in the bottom of the internal chamber (13) with its first end located between the vertical ribs (131). The valve seal (40) is mounted on the stem (30) so on the one hand that it plugs the orifices (312) of the stem and on the other hand that it bears tightly against the sealing rib (321). The stem / seal assembly is inserted into the valve body by the guide pin (33) so that the latter (33) enters the second end of the spring (20). The cup is then put in place by passing the free end of the stem through the central opening (52). The cup is brought closer to the valve body until the annular wafer (152) contacts the interior face (54) of the cup. In this position, the valve seal (40) bears tight against the tapered edge (111). All that remains is to weld the cup and the valve body at the annular edge (152). This welding can be carried out by any suitable means, and in particular by ultrasonic welding or by rotational welding.
    In the example presented here, the cup is substantially flat at the level of the valve body and around this valve body. The height of the internal face of the fixing ring is substantially identical to the thickness of the valve seal (40). The tapered edge (111) helps to press the seal in a sealed manner against the interior face of the cup. The seal between the cup (50) and the valve body (10) is therefore ensured by the valve seal crushed against the inner face (54) of the cup by the tapered edge (111) forming an annular seal while around the central opening (52). The weld at the interface between the fixing ring and the cup therefore does not need to be waterproof. It must only hold the valve body against the cup against the effect of the spring (20) and ensure a good plating of the valve seal (40) against the inner face (54) of the cup. It would therefore be possible that the weld is not continuous.
    It would also be possible for the cup not to be flat and in particular for the central opening (52) to be located in the center of the frustoconical peripheral part (562) of the bottom wall.
    Provision can be made to strengthen the cup so that it can better withstand the pressure inside the pressure vessel. In the present example, insofar as the outer layer (53) is metallic, the concave shape of the outer face (53) of the cup and the convex shape of the inner face (54) may be sufficient to obtain a sufficiently rigid cup. . Such a measure may however prove to be insufficient in certain cases, in particular when the cup is made exclusively of polymer. Vertical and radial reinforcing ribs can then be provided on at least one of the faces of the cup, in particular on the outer face (53).
    The valve body and cup must be compatible if the valve body is to be welded to the cup. For example, polypropylene, or other polyolefins, will be chosen for the valve body and the cup or the polymer layer of the cup. The valve body and the cup are not necessarily made from the same polymer.
    The advantage of the valve according to the invention lies in the fact that no part can be ejected from the valve. Indeed, all the parts are located on the side of the inner face of the cup and none is dimensioned to pass through the central opening. The weld between the valve body and the cup is not subjected to any tensile force. So it doesn't need to be particularly tough.
    In addition, by fixing the valve body on the inner face of the convex cup, it is no longer necessary to provide, as in the state of the art, a fixing dome intended to crimp the cup on the fixing ring. (15) of the valve body. This has two major advantages. On the one hand, this saves the material required for stamping the dome. For a cup of the same diameter, a smaller side can be used than for a cup with a fixing dome. On the other hand, in the case of male valves, the part of the stem which protrudes outside the valve and on which the diffuser must be fixed is located at least partly inside the cavity formed by the cup as shown. indeed Figures 2 and 7. Even if the cup is deformed during expansion on the housing and / or during pressurization, and the central opening is thereby slightly raised, the protruding part of the stem remains at least largely sheltered, tucked inside the cavity formed by the cup. The cup can be configured to allow the attachment of a removable protection on its upper face to close the cavity after conditioning of the pressure vessel.
    In particular, one can provide a peelable film attached to the top of the support edge, or a cap slipped on the support edge or inside the cavity (503). If the packaging is not done via the valve and the fixing of the cup to the housing does not require access to the cavity (503), this cavity (503) can be closed by the removable protection even before assembly of the valve body.
    The inclination of the frustoconical part (562) will be chosen as a function of the pressure prevailing in the pressure vessel and the distance having to separate the central opening (52) and the bearing edge (51), in other words of the depth of the cup cavity. At the same time, the height of the stem (30) of a male valve will be chosen according to the depth of the cavity and the contact height (H4) desired by the customer. The stem must protrude from the cup by a sufficient height corresponding at least to the sum of the opening stroke of the stem and the height necessary for fixing the diffuser. For the same cup, we can use stems of different sizes to adapt the contact height (H4) to the specific needs of the customer. Likewise, for the same stem, the inclination of the frustoconical part (562) of the bottom wall and the height of the descending wall (55) can be adapted.
    Those skilled in the art understand that the fact that the stem is at least partially encased in the cavity (503) of the cup can be obtained without the bottom wall necessarily having a frustoconical part (562). Thus the invention relates more generally to a male valve cup having an inner face and an outer face, and provided - with a central opening for the passage of the protruding part of the stem,
    - a cavity on the outer face, said cavity surrounding the central opening, the cup being configured to receive a valve body on its inner face, preferably in a flat or convex part of its inner face, and the edge of the cup surrounding the central opening being positioned such that at least a part of the section of a stem projecting out of the cup on the outside is located in the cavity. The valve cup is therefore configured so that the valve body is fixed on a convex or planar part of its inner face, but not in a concave part as in the state of the art. The entrance to the central opening (52) on the inner face of the cup is at the lowest level of the cup, and at the level furthest from the plane formed by the top of the bearing edge. In other words, the stem comes out of the valve body and enters this central opening at the lowest level of the inner face of the cup. Expressed yet another way, the interface between the central opening and the internal chamber of the valve body is located at the lowest level of the internal face of the cup. This does not necessarily imply that the valve body is also attached to the lowest level of the cup.
    Likewise, those skilled in the art understand that the fixing of the valve body on the inner face of the cup does not require the presence on the bottom wall of a frustoconical part either. The valve body could be fixed on the inner face of cups having a completely different geometry.
    List of References 1 Valve according to the invention 10 Valve body 11 Tubular body 111 Tapered edge 112 Passage opening 12 Bottom wall 121 Inlet opening 13 Internal chamber 131 Vertical ribs 14 Tenon 15 Fixing crown 151 Cross wall 152 Annular edge of the fixing ring 152a Welding allowance 152b Welding allowance
    20 Spring 30 Stem 31 Cylindrical wall 311 Bottom end 312 Ports 32 Crown 321 Sealing rib 33 Spring guide pin 40 Valve seal 50 Cup 501 Inner face of cup 502 Outer face of cup 503 Cavity in outer face of the cup 51 Peripheral support edge 511 Annular cavity to surround the neck of the housing 52 Central opening 521 Rolled edge 53 Metal outer layer 54 Polymer inner layer 55 Falling wall 56 Bottom wall 561 Flat central part around the central opening 562 Frustoconical peripheral part 563 Central edge in alignment 564 Rolled central edge A Main axis D1 External diameter of the bearing edge D2 Maximum diameter of the descending wall D3 Diameter of the junction between the frustoconical peripheral part (562) and the flat central part (561) D4 Diameter of the central opening D5 Diameter of the outer edge of the annular cavity H1 Total height of the cup H2 Distance between the top of the bearing edge and the bottom of the descending wall H3 Distance between the top of the rolled edge of the bottom wall and the inner face of the cup at the central opening
    H4 Contact height H5 Depth of the annular cavity receiving the edge of the case
    权利要求:
    Claims (17)
    [1]
    1. Valve cup (50) for a pressure vessel, having an outer face (501) and an inner face (502) and being provided - with a peripheral bearing edge (51) for placing the cup on a housing, - a central opening (52) for the passage of a product outlet rod, - a descending wall (55) in the extension of the bearing edge (51), and - a bottom wall (56) between the descending wall (55) and the central opening (52) characterized in that the bottom wall (56) comprises at least one frustoconical peripheral part (562), the face of which belongs to the outer face of the cup is concave, the entrance to the central opening (52) on the inner face of the cup located at the lowest level of the cup, and at the level furthest from the plane formed by the top of the bearing edge.
    [2]
    2. Valve cup (50) according to the preceding claim, characterized in that the cup is configured to receive on the inner face a valve body (10).
    [3]
    3. Valve cup (50) according to one of the preceding claims, characterized in that the bottom wall (56) comprises a central part (561) flat located between the peripheral part (562) frustoconical and the central opening ( 52).
    [4]
    4. Valve cup (50) according to one of the preceding claims, characterized in that the edge (563) of the bottom wall which surrounds the central opening (52) is in alignment with the frustoconical peripheral part ( 562) or, if the bottom wall comprises a flat central part (561), in alignment with said flat central part (561).
    [5]
    5. Valve cup (50) according to one of claims 1 to 3, characterized in that the edge (564) of the bottom wall which surrounds the central opening (52) is rolled up forming a rolled edge, of preferably on the side of the outer face (502) of the cup.
    [6]
    6. Valve cup (50) according to one of the preceding claims, characterized in that the bearing edge (51) of the cup forms an annular cavity (511) into which the neck (61) of a housing (60).
    [7]
    7. Valve cup (50) according to one of claims 1 to 5, characterized in that the peripheral end of the bearing edge (51) is in the form of a flat ring or of a ring of which the wall is inclined towards the center of the cup.
    [8]
    8. Valve cup (50) according to one of the preceding claims, characterized in that the inner face (501) of the cup at least is made of polymer, preferably polypropylene or another polyolefin.
    [9]
    9. Valve cup according to one of the preceding claims, characterized in that the outer face (502) of the cup at least is metallic, preferably aluminum or tinplate.
    [10]
    10. Valve cup (50) according to one of the preceding claims, characterized in that reinforcing ribs are provided on at least one face of the cup, preferably the outer face.
    [11]
    11. Valve (1) consisting of a cup according to one of the preceding claims, a valve body (10) in which are placed a spring (20), a valve (30) and a valve seal (40 ), the valve body being fixed on the inner face (501) of the cup, characterized in that the valve gasket (40) is pressed against the inner face of the bottom wall (56) of the cup, surrounding the 'central opening (52), and in that the valve body (10) is fixed to the inner face of the bottom wall (56) by welding.
    [12]
    12. Valve (1) according to claim 11, characterized in that the valve body (10) is welded to the central part (561) flat of the bottom wall (56).
    [13]
    13. Valve (1) according to claim 11, characterized in that the valve body (10) is welded to the peripheral part (562) frustoconical of the bottom wall (56).
    [14]
    14. Valve (1) according to one of claims 11 to 13, characterized in that the valve is constituted by the nozzle (30) of a male valve, a projecting part of which protrudes from the outer face (502) of the cup. passing through the central opening (52), at least the lower part of the protruding part of the nozzle, preferably at least half of the protruding part of the nozzle, being located in the cavity (503) defined by the plane passing through the top of the bearing edge (51), the descending wall (55) and the bottom wall (56).
    [15]
    15. Valve (1) according to the preceding claim, characterized in that, at least before mounting the valve on a housing (60) to form a container, all of the projecting part of the nozzle is located in the cavity (503 ), said cavity (503) preferably being configured to be closed at the latest after conditioning of the pressure vessel by a removable protection, preferably a peelable film or a cap.
    [16]
    16. Valve (1) according to one of claims 11 to 15, characterized in that the valve body comprises a tubular body (11) provided - âone end of an annular tapered edge (111), which tapered edge (111 ) bears tightly against the valve seal (40) by surrounding the central opening (52), as well as - a fixing ring (15) by which the valve body is welded to the cup.
    [17]
    17. Valve (1) according to the preceding claim, characterized in that the tubular valve body (11) comprises a cylindrical wall provided at its upper end with the tapered edge (111) and extending at the other end by a wall tapering away from the tapered edge (111).
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2021013599A1|2021-01-28|
    CA3142562A1|2021-01-28|
    FR3099144B1|2022-01-07|
    FR3099144A1|2021-01-29|
    BE1027458A1|2021-02-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO1981001130A1|1979-10-18|1981-04-30|Polyfill Ag|Pressurized container|
    DE3544924A1|1985-12-19|1987-07-02|Euscher Gmbh & Co Ewald|Valve plate for bearing aerosol valves|
    EP0258299A1|1986-01-30|1988-03-09|Bespak Plc|Collapsible chamber metering valves.|
    WO1989008062A1|1988-03-04|1989-09-08|Perfect-Valois Ventil Gmbh|Aerosol container|
    US20160009482A1|2014-07-14|2016-01-14|Clayton Corporation|Valve for pressurized container|
    WO2018052973A1|2016-09-14|2018-03-22|Crown Packaging Technology, Inc.|Compact aerosol container|
    FR2508136B1|1981-06-19|1985-12-06|Oreal|IMPROVEMENT IN VALVES FOR AEROSOL CONTAINERS|
    US4441635A|1982-11-01|1984-04-10|Beard Walter C|Direct high flow aerosol-type valve with moveable cup|
    FR2741048B1|1995-11-13|1998-01-16|Oreal|NEW UNIDOSE PRESSURIZED CONTAINER|
    FR3037571B1|2015-06-16|2019-11-22|Lindal France|PROCESS FOR MANUFACTURING AEROSOL VALVE AND AEROSOL VALVE|
    法律状态:
    2021-04-23| FG| Patent granted|Effective date: 20210223 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1908421A|FR3099144B1|2019-07-24|2019-07-24|Valve for pressure vessel|PCT/EP2020/069732| WO2021013605A1|2019-07-24|2020-07-13|Valve cup for pressurised container|
    CA3147515A| CA3147515A1|2019-07-24|2020-07-13|Valve cup for pressurised container|
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