• 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 invention relates to a metering dispensing valve (4) for a dispensing device (1) for pressurized product, comprising a dispensing member (41) and a cup (40) adapted to be fixed to a hollow body (20). 'a dispensing device (1), said cup (40) comprising an outer face (4A) on which is fixed said dispenser member (41) and an inner face (4B) opposite to said outer face (4A), said cup (40) being flexible so as to be mounted prestressed to a hollow body (20) of a dispensing device (1) and said cup (40) comprising a radially inner portion (RI) in which said dispensing member is fixed ( 41) and a radially outer portion (RE) whose inner face (4B) is convex.
    公开号:BE1023035B1
    申请号:E2015/5521
    申请日:2015-08-21
    公开日:2016-11-09
    发明作者:Franck Flecheux
    申请人:FLECHEUX Frank；
    IPC主号:
    专利说明:

    ULKUMIII- UIMKIÖUIIUN Ut KKUUUII rKtSbUmot, VALVt Ut UIMKIBUIIUN UUAtUAt tTUL- '
    METHOD FOR ASSEMBLING THE SAME VALVE GENERAL TECHNICAL FIELD AND PRIOR ART
    The present invention relates to the field of dispensing pressurized products, in particular an aerosol for dispensing pharmaceutical products or medical products in the form of a spray.
    The present invention more particularly relates to a MDI (MDI for Metered-Dose Inhaler) which is a device for dispensing a specific quantity of drug by oral and / or nasal route, in the form of a short spraying. an aerosol drug that is usually self-administered by the patient through inhalation. An aerosol is the most commonly used dispensing device for treating asthma, chronic obstructive pulmonary disease (COPD) and other respiratory diseases.
    In general, as shown in FIG. 1A, an aerosol includes a housing and a metering valve 200 mounted on the housing. A seal 201 is usually placed at the interface between the housing and the metering valve 200 to prevent leakage. In use, the seal 201 is in contact with the medical or pharmaceutical products of the housing. The interaction between the seal 201 and the medical or pharmaceutical products can alter the products and therefore has a disadvantage. To eliminate this disadvantage, as shown in FIG. 1A, a metering valve 200 usually includes an interface member 202 which is located under the seal 201 to limit the interaction of the products with the seal 201. Such a dispensing valve metering machine 200 is complicated and expensive to manufacture.
    In addition, in order to close the storage box, the valve is sealed to the housing, also known to those skilled in the art under the designation "dudonnage". Said closing method is known from the prior art, in particular in the standard definition document FEA 219, FEA 215 and FEA 226. By way of example, with reference to FIG. 1B, a dispensing device 100 closed by "Offset" includes a glass storage case 101 with an annular upper edge 102, on which is crimped an annular cup 104 of a dispensing valve 103. A storage case 101 may also be made of aluminum (FIG. a rolled up edge 102 'or made of aluminum / stainless steel with an upper cut edge 102 "(Figure 1D).
    A bleeding process is complicated to close housings 100 and allows interactive products with the seal. The invention proposes to provide a product dispensing device offering an optimal closure quality which is simple to manufacture and to implement. In addition, it limits the interaction between a seal and medical or pharmaceutical products.
    GENERAL PRESENTATION OF THE INVENTION To this end, the invention relates to a metering dispensing valve for a pressurized product dispensing device comprising a metering dispenser and a cup adapted to be fixed to a hollow body of a dispensing device. said cup having an outer face on which is fixed said dispensing member and an inner face opposite to said outer face. The invention is remarkable, on the one hand, in that the cup is flexible so as to be mounted prestressed to a hollow body of a dispensing device and, on the other hand, in that the cup has a portion radially interior in which is fixed said dispensing member and a radially outer portion whose inner face is convex.
    When the cup is mounted on a hollow body comprising a pressurized product, the pressurized product acts on the cup so that the cup is mechanically prestressed. In other words, the cup is not necessarily prestressed when positioned in a hollow body.
    A convex inner face must be understood as comprising a face that can be conical, parabolic, spherical, and so on. Thereafter, the radially inner and radially outer terms must be defined with respect to the axis of the valve.
    First, said metering dispensing valve has a simple design and does not include a wall having undergone many deformation steps to obtain, for example, a lip or a seal cavity. Unlike the prior art which favored a rigid cup, the cup of the metering dispensing valve according to the invention is flexible and convex. The synergy of these two characteristics makes it possible to introduce the cup into the mounting opening by applying mechanical prestressing. In addition, when the mechanical preload is released, the cup allows, thanks to its flexibility, to relax and lock in the mounting opening. This locking is secured by the fact that the inner face of said cup is convex. After closure, the pressurized product applies a mechanical stress on the radially outer portion of the cup which tends to straighten the cup, that is to say, to reduce its arrow, because of its convexity; · In other words, the mechanical stress of the pressurized product makes it possible to secure the locking and the position of the dispensing valve in the storage box by converting an axial force into a radial locking force.
    In other words, it is not necessary to use additional fixing or crimping means to block the dispensing valve, which is advantageous. The metering dispensing valve is advantageously indémontable storage housing.
    In addition, such a metering dispensing valve improves closure. Therefore, a small seal can be used which limits the risk of interaction with the pressurized product. Advantageously, an interface member for limiting interaction with the seal can be omitted which limits the cost of the metering valve. In some cases, even the joint could be omitted.
    Finally, because of its simple design, the dispensing valve requires fewer materials compared to the prior art, which is advantageous.
    Preferably, the cup comprises the radially inner portion in which is fixed said dispensing member and the radially outer portion whose inner face is convex.
    Preferably, said outer face of the radially outer portion of said cup is uniformly convex so that the pressurized product applies a homogeneous mechanical stress on the cup to reduce its deflection. In addition, such a cup is simple to form.
    According to a preferred aspect of the invention, said cup has a bent peripheral edge in order to improve the locking of the cup in the storage box. In this way, the inner face of the cup may comprise portions of different convexities.
    Preferably, said radially outer portion of the cup has a constant thickness, which facilitates the production of the cup and the formation of its curvature.
    In a preferred aspect, the cup has an annular peripheral edge. In addition to its simple design which limits its cost of production, an annular peripheral edge allows a uniform blocking in a cylindrical neck of annular section while avoiding any defect of inclination or angular orientation. Thus, the dispensing valve is positioned accurately relative to the storage box, which improves the aesthetic appearance. The invention also relates to a pressurized product dispensing device comprising: a storage case comprising a hollow body filled with pressurized product, a mounting opening and a cylindrical neck connecting said hollow body to said mounting opening, and a dispensing valve metering device, as presented above, whose cup is mounted prestressed in said cylindrical neck and said inner face of said cup is turned towards said hollow body.
    The cooperation of the cup of the dispensing valve with the cylindrical neck of the storage case makes it possible to ensure a homogeneous blocking by taking advantage of the flexibility of the cup and the convexity of its inner face in contact with the pressurized product. The assembly of the dispensing valve is thus simple and quick to implement to contain the pressurized product.
    Advantageously, the dimensional accuracy of the valve / housing assembly is improved. Indeed, in the prior art, the de-swaging process resulted in deformation of the valve cup creating variations in the dispensing member, which resulted in accidental emptying of the dispensing device or leaks. Advantageously, the assembly of a convex-shaped valve in a housing eliminates this problem since according to the invention, the cup is mounted on the dispensing member in its final position of use. No subsequent mechanical operation affects the vertical position of the dispensing member as could be the case in the prior art.
    In addition, such a dispensing device is simple to control since each parameter can be directly measured, which was not the case in the prior art with a rolled edge or a dispensing valve equipped with a lip which are difficult to measure after assembly. Thanks to the invention, the controls can be automated and systematized for each product dispensing device. Such controls improve the quality compared to the static controls that were performed in the prior art.
    Thanks to the invention, the manufacturing process is shortened and requires fewer forming steps to achieve the dispensing device. The operations of producing the rolled edge, machining and rolling can advantageously be avoided. In addition, it eliminates the risk of pollution related to these machining operations that are likely to generate chips and particles on the inner wall and the outer wall of the housing. In addition, the storage box can be formed with a greatly reduced or suppressed lubrication, which has advantages, particularly in the environmental field of the pharmaceutical industry, and improves the aesthetic appearance of the dispensing device. The invention makes it possible to manufacture industrially a storage box without an interior varnish, which is a break with the traditional methods that require the application of varnish to enable the forming operation of the rolled edge. Finally, the closure quality makes it possible to store pressurized products at high pressure, preferably up to 30 or 40 bars.
    Preferably, the dispensing device is a metered-dose inhaler or a nasal and / or oral spray.
    Preferably, since the cup has a peripheral edge and the cylindrical neck has an inner surface, said peripheral edge of the cup bears against said inner surface of said cylindrical neck. In this way, the cup is locked in force in the cylindrical neck and exerts a stress on the inner surface of the cylindrical neck. The greater the pressure of the pressurized product, the greater the force applied by the peripheral edge, which ensures optimal blocking even with a product under high pressure. The sealing of the dispensing device is thus ensured.
    In one aspect, the transverse dimension of the cup in the non-prestressed state is greater than the cross section of the cylindrical neck. Thus, because of its flexibility, the cup is naturally prestressed in the cylindrical neck.
    In a particular aspect, the cross section of the cylindrical neck is annular so as to cooperate with the annular cup. The angular orientation of the dispensing valve is thus indifferent during assembly, which is advantageous.
    Preferably, the cylindrical neck having a peripheral shoulder and the cup having a peripheral edge, said peripheral edge bears against said peripheral shoulder of said cylindrical neck. Such a peripheral shoulder is advantageous because it ensures a precise reference surface for the positioning of the dispensing valve in the cylindrical neck. The dispensing devices thus formed are advantageously identical. Preferably, the dimensions of the peripheral shoulder are configured to prevent the passage of the cup even when the latter is elastically prestressed.
    More preferably, the cylindrical neck having a peripheral groove, the cup having a peripheral edge, said peripheral edge is housed in said peripheral groove of said cylindrical neck. Such a peripheral groove is advantageous because it limits the insertion stroke of the dispensing valve in the cylindrical neck to the hollow body or to the mounting opening. In addition, any cup removal is made impossible, which improves the resistance to pressure. The cup is thus perfectly locked in the cylindrical neck.
    Preferably, the dispensing device comprises a peripheral seal moiftf between said cup and said cylindrical neck. Thus, the seal is constrained during assembly of the dispensing valve and then has optimum sealing characteristics.
    According to one aspect of the invention, said peripheral seal has a weight of between 0.03 g and 0.07 g, preferably 0.05 g. In other words, thanks to the invention, the amount of seal is limited in comparison with a dispensing device according to the prior art. As a result, interactions with the seal are greatly reduced and reliability is improved. The weight of the seal is defined for a case having an opening diameter of 20 mm.
    According to one embodiment of the invention, the dispensing device comprises a sealing material between said cup and said cylindrical neck.
    Preferably, the cylindrical neck has an upper edge which is folded inwardly so as to form a safety locking means preventing disassembly of the dispensing valve. The invention also relates to a method of assembling a dispensing device as presented above, comprising a step of inserting the cup into said cylindrical neck of said storage box, the inner face of said cup being turned towards the body hollow of the storage box.
    According to one aspect of the invention, the method comprises a modification of the shape of the cylindrical neck to lock said cup. Preferably, the upper edge of the storage case is folded down.
    According to another aspect of the invention, the method comprises a step of inserting the cup into force so as to maintain said cup in a prestressed state in said cylindrical neck of the storage box, the inner face of said cup being turned towards the hollow body of the storage box. Thus, the blocking of the metering valve and the sealing of the distribution box are ensured.
    Advantageously, the assembly of the cup makes it possible to form a dispensing device whose resistance to pressure is improved compared to a conventional assembly. Indeed, at present, a resistance to pressure greater than 10 bar is difficult to control. With the assembly proposed by the invention, the resistance to pressure is significantly increased since the pressurized product contributes to reinforcing the locking of the cup in the storage box. The invention also relates to a method of assembling a dispensing device as presented above, comprising a step of insertion into said cylindrical neck of the storage box, the convex inner face of said cup being turned towards the hollow body of the storing case and a step of reducing the cross section of said cylindrical neck to lock the cup. Thus, the blocking of the metering valve and the sealing of the distribution box are ensured.
    Preferably, the transverse dimension of said cylindrical neck before insertion is greater than the cross section of the cup to allow easy insertion prior to the reduction step. The invention also relates to a method for filling a dispensing device as presented above, the method comprising a step of filling the hollow body of the storage box with a pressurized product and a step of closing the dispensing device by insertion of the cup in said cylindrical neck of the storage case, the inner face of said cup being turned towards the hollow body of the storage case.
    Such a filling method is simple to implement and the quality of closure can be controlled in a practical, reliable and fast manner.
    PRESENTATION OF THE FIGURES The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings in which: FIG. 1A is a diagrammatic representation of an aerosol metering device according to the prior art; FIG. 1B is a diagrammatic representation of a closed product dispensing device using a debonding method according to the prior art; FIG. 1C and FIG. 1D are schematic representations of storage boxes; FIG. 2 is a representation of a step of assembling a product dispensing device according to the invention; FIG. 3 is a representation of a step of forcibly inserting a dispensing valve into a storage case of the fluid dispensing device of FIG. 2; FIG. 4 is a close-up representation of part of FIG. 3; - Figure 5 is a representation of an assembled product dispensing device according to the invention; FIG. 6 is a diagrammatic representation of another embodiment of a storage box of a product dispensing device according to the invention whose cross section is constant; - Figure 7 is a schematic representation of another embodiment of a storage case of a product dispensing device according to the invention with a peripheral groove; - Figure 8 is a schematic sectional representation of another embodiment of a dispensing valve of a product dispensing device according to the invention with a bent peripheral edge; - Figure 9 is a schematic top view of the dispensing valve of Figure 8; - Figure 10 is a schematic sectional representation of another embodiment of a dispensing valve of a product dispensing device according to the invention with radial stiffeners; - Figure 11 is a schematic top view of the dispensing valve of Figure 10; - Figure 12 is a schematic sectional representation of another embodiment of a product dispensing device according to the invention wherein the upper edge of the storage case is folded down; FIG. 13A and FIG. 13B are diagrammatic representations in section of other embodiments of a product dispensing device according to the invention in which the upper edge of the storage box is folded down; and FIG. 14 is a diagrammatic representation in section of another embodiment of a product dispensing device according to the invention in which the upper edge of the storage box is folded down with a gasket or a material. sealing.
    It should be noted that the figures disclose the invention in detail to implement the invention, said figures can be used to better define the invention where appropriate.
    DESCRIPTION OF ONE OR MORE EMBODIMENTS AND METHODS OF IMPLEMENTATION The invention will be presented subsequently for a metered dose inhaler for dispensing medical or pharmaceutical products.
    First embodiment: cylindrical collar with peripheral shoulder
    With reference to FIGS. 2 to 5, there is shown a first embodiment of a pressurized product dispensing device 1 according to the invention. The dispensing device 1 comprises a storage box 2 which is closed by a metering dispensing valve 4.
    With reference to FIG. 2, the metering dispensing valve 4 extends axially along an axis X and comprises a closure wall, hereinafter referred to as a cup 40, having a peripheral edge 42 and defining an outer face 4A on which is fixed a metering dispenser member 41 (shown partially), and an inner face 4B opposite to said outer face 4A. Such a cup 40 has a radially inner portion R1 with respect to X axis in which is mounted the metering dispenser member 41 and a radially outer portion RE with respect to the axis X. The cup 40 comprises, in its radially inner portion RI a through hole 43, preferably a central orifice, which is connected to the dispensing member 41. The dispensing member 41 is preferably in the form of a mechanical actuator of the diffuser type which is connected to a tube plunger (not shown) extending from inner side 4B.
    In general, a dispenser (or mouthpiece) is attached to the dispensing dispenser to allow the drug spray to be dispensed into the mouth or nose of a patient. Usually, the dispenser is closed by a removable cover.
    With reference to FIGS. 2 and 3, the cup 40 is flexible so as to be mounted prestressed in a hollow body 20 of the storage box 2. The cup 40 is preferably made of metal, thermo-plastic or thermoplastic plastic, and has a constant thickness, preferably of the order of 0.2 to 0.6 mm but it is obvious that other materials or other thicknesses could also be suitable.
    According to the invention, the inner face 4B of the radially outer portion RE of such a cup 40 is convex. In this embodiment, the inner face 4B of the radially outer portion RE of such a cup 40 is uniformly convex. In the free state, the cup 40 has an arrow Δ corresponding to the distance between its low point and its high point. Subsequently, the angle formed between the radially outer portion RE of such a cup 40 and the horizontal plane as shown in Figure 4 is designated a. In the free state, the arrow Δ of the cup 40 is at the maximum of the order of 4 mm while the angle a is at most equal to 30 °.
    In this embodiment, the cup 40 has a peripheral edge 42 which is annular and has a diameter D4 in the non-prestressed state, that is to say before mounting in the storage box 2. for example, the non-prestressed diameter D4 is of the order of 11 to 35 mm. As will be presented hereinafter, the non-prestressed diameter D4 is slightly greater than the diameter D3 of the storage case 2.
    With the dispensing valve 4 having been presented, the storage box 2 of FIG. 2 will now be described in detail.
    With reference to FIG. 2, the storage box 2 comprises a hollow body 20, a mounting opening 21 and a cylindrical neck 3 connecting said hollow body 20 to said mounting opening 21. In this example, the hollow body 20 has a cylindrical shape and the cylindrical neck 3 is formed at its upper end. In general, the opening diameter of the housing 2 is between 15 mm and 32 mm, preferably between 20 mm and 22 mm. In addition, its length is usually between 15 mm and 190 mm, preferably between 35 and 60 mm.
    Referring to Figure 2, the cylindrical neck 3 is of annular cross section and defines an inner face 3A and an outer face 3B opposite to the inner face 3A. In this embodiment, the cylindrical neck 3 extends vertically from the hollow body 20 of the storage case 2, the upper end of the cylindrical neck 3 thus forming the mounting opening 21 of the storage case 2 as illustrated in FIG. figure 2.
    Preferably, the storage box 2 is made of aluminum or tinplate, but it goes without saying that other metallic or plastic materials could be suitable, for example, copper, zinc, glass or plastic materials of the invention. PE, PP, PET and PEN, pure or mixed. The storage case 2 may comprise an interior surface varnished according to the applications. The mounting aperture 21 of the storage case 2 is annular and has an aperture diameter D3 as shown in FIG. 2. For example, the aperture diameter D3 is in the range of 10 to 35 mm. Preferably, the opening diameter D3 is smaller than the non-prestressed diameter D4 of the cup from 0.05 mm to 0.5 mm.
    Referring to Figure 2, the cylindrical neck 3 has an upper portion 31, located on the side of the mounting opening 21, and a lower portion 32 located on the side of the hollow body 20, the opening diameter D2 is lower at the opening diameter D3 of the upper part 31, that is to say, the opening diameter of the mounting opening 21 formed at the upper end of the cylindrical neck 3. By way of example, the opening diameter D2 is smaller than the opening diameter D3 from 1 mm to 2 mm.
    In other words, the cylindrical neck 3 has a peripheral shoulder 33 adapted to serve as a support for mounting the dispensing valve 4 as illustrated in FIG. 4.
    Preferably, the storage box 2 is formed by a stamping and forming process.
    With reference to FIG. 2, the prestressed diameter D4 of the cup 40 is greater than the opening diameter D3 of the mounting opening 21 of the storage box 2. Thus, when the cup 40 is mounted in the cylindrical neck 3 of the storage case 2, the cup 40 must be prestressed as will be presented in the example of the following embodiment.
    The peripheral edge 42 is preferably beveled so as to be in plane contact with the inner surface 3A of the cylindrical neck 3 in the mounting position to improve locking as shown in FIG. 4.
    Alternatively, the method may comprise a step of reducing the cross section for said cylindrical neck 3 in order to lock the cup 40. Thus, when the cup 40 is mounted in the cylindrical neck 3 of the storage box 2, the cup 40 is not prestressed.
    Example of embodiment
    With the storage case 2 and the dispensing valve 4 having been presented, the assembly of the dispensing valve 4 in the storage case 2 will now be described.
    Ordinarily, the storage case 2 and the dispensing valve 4 are made independently before assembly. Prior to assembly, a product to be dispensed, preferably liquid, is introduced into the hollow body 20 of the storage box 2 via the mounting opening 21. In other words, the storage box 2 is filled.
    In order to close the storage box 2 with the dispensing valve 4, the convex face 4B of the cup 40 of said dispensing valve 4 is positioned on the mounting opening 21 forming the upper end of the cylindrical neck 3 and is turned towards the hollow body 20 of the storage box 2 as illustrated in FIG. 2.
    The non-prestressed diameter D4 of the peripheral edge 42 of the cup 40 being greater than the opening diameter D3 of the mounting opening 21 of the storage box 2, the assembly method comprises a step of insertion in force of the cup 40 in such a cylindrical neck 3 to mount the prestressing valve 4 in the cylindrical neck 3 of the storage case 2.
    During the insertion step and thanks to the flexibility of the cup 40, the arrow of the cup 95 increases to be able to penetrate the cylindrical neck 3 as shown in Figure 3.
    With reference to FIG. 4, when the peripheral edge 42 of the cup 40 comes into contact with the peripheral shoulder 33 of the cylindrical neck 3, any downward movement of the cup 40 is prevented, that is to say, a displacement towards the hollow body 20. In other words, the cup 40 is in abutment on the shoulder 33. In fact, the flexibility of the cup 40 is insufficient to allow it to extend in the opening diameter D2 of the lower part 32 of the cylindrical neck 3.
    In other words, the cup 40 has, on the one hand, in the unconstrained state, a diameter D4 greater than the opening diameter D3 of the mounting opening 21 and, on the other hand, in the constrained state. a diameter which is smaller than the opening diameter D3 of the upper part 31 of the cylindrical neck 3 but which is greater than the opening diameter D2 of the lower part 32 of the cylindrical neck 3 as illustrated in FIG.
    Still with reference to FIG. 3, during the insertion of the dispensing valve 4, a mechanical insertion force is applied centrally to the concave outer face 4A of the cup 40 (arrow Fl), which increases its deflection by narrowing the diameter of its peripheral edge 42 (arrow F2). When the mechanical insertion force is no longer applied, because of the flexibility and elasticity of the cup 40, the peripheral edge 42 of the cup 40 expands and comes into contact against the inner surface 3A of the cylindrical neck 3 (Figure 4), which blocks the position of the cup 40 and ensures a tight fitting. Preferably, with reference to FIG. 4, in the mounted position, the arrow Δ of the cup 40 increases by 0.1 mm to 0.5 mm while the angle a increases by 1 ° to 5 ° in comparison with the free state of the cup 40.
    Then, a propellant fluid is introduced into the hollow body 20 of the storage box 2 via the dispensing member 41 of the dispensing valve 4, the propellant fluid being compressed or liquefied. Alternatively, the propellant can be introduced prior to closing the storage box 2 by the dispensing valve 4. The propellant is mixed with the product to be dispensed into the hollow body 20 of the storage box 2 to form the product pressurized to distribute.
    As illustrated in FIG. 5, in the mounted position, the pressurized product G of the hollow body 20 exerts a pressure on the inside face of the radially outer portion RE of the cup 40 (arrow F3), which tends to reduce the deflection and to increasing the diameter of the peripheral edge 42 (arrow 4) due to the flexibility of the cup 40. In other words, the stress between the cup 40 and the cylindrical neck 3 increases due to the pressurized product G, which ensures a tight seal and quality. The greater the pressure of the product G within the storage case 2, the greater the radially exerted fofêi (arrow 4), which improves the seal. The radially outer portion RE of the cup 40 makes it possible, because of its convexity, to convert any axial force of the product G into a radial force against the cylindrical neck 3.
    Thus, a dispensing device 1 perfectly locked and sealed at a limited manufacturing price. Indeed, the storage case 2 has only a cylindrical neck 3 whose manufacture is cheap compared to the prior art since it does not require manufacturing a rolled edge, manufacturing a stamped edge or manufacturing a rolled and stamped edge. Finally, it is possible to produce a storage box without applying varnish.
    The dispensing valve 4 has for its part a reduced cost since the cup 40 is simple to manufacture and requires no machining step or complex stamping. Finally, the equipment needed to assemble the dispensing valve 4 in the storage box 2 is reduced, which speeds up the production rates and facilitates the control steps, no complex crimping step being implemented. .
    In use, when the mechanical member 41 is pressed down towards the hollow body 20 of the storage case 2, the dispensing valve 4 is open and the product to be dispensed can escape from the dispensing device 1. D ' Other embodiments and advantageous variants of a dispensing device according to the invention will now be presented.
    Second embodiment: cylindrical neck of constant cross-section
    According to another embodiment, with reference to FIG. 6, the cylindrical neck 3 has a constant opening diameter along its length, that is to say, without a peripheral shoulder 33. Also, the cup 40 is blocked in the cylindrical neck 3 when the mechanical force applied centrally to the outer face A4 of the cup 40 is stopped at the end of the insertion. The cup 40 is immobilized because of its flexibility and the pressure of the pressurized product G in the storage case 2. The radially outer portion RE of the cup 40 allows optimal fixation. Indeed, the mechanical force required to set up the dispensing valve 4 is significantly greater than the force applied by users on the dispenser member 41 to dispense pressurized product.
    Such an embodiment is economical since the storage case 2 has a very simple design.
    Third embodiment: cylindrical neck with peripheral groove
    According to another embodiment, with reference to FIG. 7, the cylindrical neck 3 comprises a peripheral groove 34 whose opening diameter is greater than that of the diameter D3 of the cylindrical neck 3. The thickness of the peripheral groove 34 is greater than the thickness of the peripheral edge 42 of the cup 40. Thus, the peripheral edge 42 is housed in such a peripheral groove 34 of the cylindrical neck 3 during its insertion into the cylindrical neck 3, which prevents any displacement of the cup 40 up and down. The peripheral groove 34 makes it possible to secure the assembly of the metering dispensing valve 4 in the storage case 2. In addition, because of its shape, the peripheral groove 34 makes it possible to increase the rigidity of the cylindrical neck 3, which makes it possible to reduce the thickness of the cylindrical neck while maintaining a high radial resistance. The dispensing valve is thus locked in position.
    Presence of a seal
    According to a preferred variant of the invention, with reference to FIG. 7, a peripheral seal 5 is mounted between the cup 40 and said cylindrical neck 3. By way of example, the peripheral seal 5 is annular and is made of a plastic material, for example, with a hardness of the order of 20-70 Shore. Preferably, the peripheral seal 5 has an L-shaped cross-section, but it goes without saying that an O-ring could be suitable. Similarly, a liquid seal previously applied to the valve 4 or the housing 2 can also be used.
    Preferably, the peripheral seal 5 is mounted to the cup 40 of the dispensing valve 4 so as to be compressed between the peripheral edge 42 of the curved flexible cup 40 and the inner face of the cylindrical neck 3, which ensures an optimum seal between the cup 40 and the cylindrical neck 3.
    It goes without saying that a seal could be mounted in a dispensing device 1 for other configurations of the storage box 2 or of the dispensing valve 4.
    Thanks to the invention, such a seal has small dimensions, which limits the risk of interaction between the seal and the drug located inside the housing. Preferably, for a housing having an opening diameter of 20 mm, said peripheral seal has a weight of between 0.03 g and 0.07 g, preferably 0.05 g. In other words, thanks to the invention, the amount of seal is limited in comparison with a dispensing device according to the prior art. Therefore, the interactions between pharmaceuticals, drugs, ^! Thruster and seal are greatly reduced and reliability is improved.
    Peripheral edge raised 42
    According to a preferred variant of the invention, with reference to FIGS. 8 and 9, the radially outer portion RE of the cup 40 comprises a central portion 40a having a first radius of curvature and a peripheral portion 40b having a second smaller radius of curvature. than the first radius of curvature so that the peripheral edge 42 of the cup 40 is raised. Such a cup 40 advantageously makes it possible to guide the assembly of the casing 2 at the time of the introduction of the valve 4 into the cylindrical neck 3.
    Ribs 44
    According to a variant of the invention, the cup 40 has on its outer face 4A at least one stiffener adapted to stiffen the cup 40. Preferably, with reference to FIGS. 10 and 11, the cup 40 comprises a plurality of ribs 44, extending radially around the dispensing member 41 to increase the rigidity of the cup 40. Such ribs 44 can improve the strength of the cup 40 vis-à-vis the pressure of the pressurized product G without increasing the The thickness of the cup 40. The orientation of the ribs 44 guides the forces experienced by the cup 40 radially to the cylindrical neck 3 to allow an optimal sealing.
    It has been presented ribs 44 formed on a cup 40 as defined in Figure 2, but it goes without saying that such ribs 44 may be provided on any embodiment of the cup 40 according to the invention.
    Upper edge 35
    According to a variant of the invention, with reference to FIG. 12, the cylindrical neck 3 comprises an upper edge 35 which is folded inwards so as to form a safety locking means preventing any disassembly of the dispensing valve 4 Preferably, the folded edge 35 extends horizontally so as to reduce it. diameter of the mounting aperture. It goes without saying that the folded edge 35 could have another shape. In this example, the upper edge 35 is folded back after mounting of the dispensing valve 4 in the cylindrical neck 3.
    According to one aspect of the invention, the transverse dimension of the cylindrical neck 3 before insertion is greater than the cross section of the cup 40 to allow easy insertion prior to the reduction step. The cup 40 is constrained by the pressurized product G. By way of example, with reference to FIG. 13A and FIG. 13B, the upper edge 35 is deforted by swaging so as to prevent any disassembly and in addition blocks the displacement. Vertical downward of the dispensing valve 4. In Figure 13B, the dispenser dispenser 41 is fully shown. Preferably, as illustrated in FIG. 14, a peripheral seal 5 is assembled on the dispensing device so as to be compressed between the peripheral edge 42 on the curved flexible cup 40 and an upper edge 35 of the cylindrical neck 3, This ensures an optimum seal between the cup 40 and the cylindrical neck 3. FIG. 14 shows a peripheral seal 5 extending all around the cup of the valve. A peripheral seal 5 has a U-shaped cross section and defines an upper portion, a lateral portion, and a lower portion. A sealant may also be used in place of the seal. Nevertheless, it goes without saying that the peripheral seal 5 could have a different shape and comprise only one or two parts. In particular, the seal 5 could comprise only an upper portion mounted above the cup or a lower portion mounted below the cup or a side portion mounted on the side of the cup.
    Advantageously, as illustrated in FIGS. 13A and 13B, a deformation of the upper edge 35 makes it possible to facilitate closure and to optimally control the quality of such a closure by measuring in a practical and rapid manner the values of GH / OD and ID, known to those skilled in the art. For example, the dimensions can be controlled using a continuous vision system by comparators or calipers.
    权利要求:
    Claims (17)
    [1]
    CLAIMS ----------
    Metering dispensing valve (4) for a dispensing device (1) for pressurized product, comprising a metering dispenser (41) and a cup (40) adapted to be fixed to a hollow body (20) of a dispensing device (1), said cup (40) having an outer face (4A) on which is fixed said dispensing member (41) and an inner face (46) opposite to said outer face (4A), valve characterized by the said cup (40) is flexible so as to be preloaded to a hollow body (20) of a dispensing device (1) and in that said cup (40) has a radially inner portion (RI) in which is fixed said dispensing member (41) and a radially outer portion (RE) whose inner face (4B) is convex.
    [2]
    2. Metering valve (4) according to claim 1, wherein said inner face (4B) of the radially outer portion (RE) of said cup (40) is uniformly convex.
    [3]
    3. Metering valve (4) according to one of claims 1 to 2, wherein said cup (40) has a peripheral edge (42) bent.
    [4]
    4. Metering valve (4) according to one of claims 1 to 3, wherein the radially outer portion (RE) of said cup (40) has a constant thickness.
    [5]
    5. Dosing valve (4) according to one of claims 1 to 4, wherein said cup (40) has an annular peripheral edge (42).
    [6]
    6. Device for dispensing (1) pressurized product comprising: - a storage box (2) comprising a hollow body (20) filled with pressurized drug product (G), a mounting opening (21) and a cylindrical neck ( 3) connecting said hollow body (20) to said mounting opening (21), and - a metering valve (4) according to one of claims 1 to 5, the cup (40) of which is mounted prestressed in said cylindrical neck (3) and whose inner face (4B) of said cup (40) is turned towards said hollow body (20).
    [7]
    7. Dispensing device (1) according to claim 6, wherein the cup (40) has a peripheral edge (42) and the cylindrical neck (3) has an inner surface (30), said peripheral edge (42) of the cup (40) bears against said inner surface (30) of said cylindrical SP (3).
    [8]
    8. Dispensing device (1) according to one of claims 6 to 7, wherein the transverse dimension (D4) of the cup (40) in the non-prestressed state is greater than the transverse dimension (D3) of the neck cylindrical (3).
    [9]
    9. Dispensing device (1) according to one of claims 6 to 8, wherein the cross section of the cylindrical neck (3) is annular.
    [10]
    10. Dispensing device (1) according to one of claims 6 to 9, wherein the cylindrical neck (3) has a peripheral shoulder (33), the cup (40) has a peripheral edge (42), said peripheral edge (42) bearing against said peripheral shoulder (33) of said cylindrical neck (3).
    [11]
    11. Dispensing device (1) according to one of claims 6 to 9, wherein the cylindrical neck (3) has a peripheral groove (34), the cup (40) has a peripheral edge (42), said peripheral edge (42) being housed in said peripheral groove (34) of said cylindrical neck (3).
    [12]
    12. Dispensing device (1) according to one of claims 6 to 11, comprising a peripheral seal (5) mounted between the cup (40) and said cylindrical neck (3).
    [13]
    13. Dispensing device (1) according to claim 12, wherein said peripheral seal (5) has a weight of between 0.03 g and 0.07 g, preferably 0.05 g.
    [14]
    14. Dispensing device (1) according to one of claims 6 to 13, wherein said cylindrical neck (3) comprises a folded upper edge (35).
    [15]
    15. Dispensing device (1) according to one of claims 6 to 14, wherein said dispensing device is a metered dose inhaler.
    [16]
    16. A method of assembling a dispensing device (1) according to one of claims 6 to 15, comprising a step of insertion of the cup (40) so as to maintain said cup (40) in said cylindrical neck (3) of the storage case (2), the inner face (4B) of said cup (40) being turned towards the hollow body (20) of the storage case (2).
    [17]
    17. A method of filling a dispensing device according to one of claims 6 to 16 comprising: - a step of filling a hollow body (20) of a storage box (2) withüfl · pressurized product (G ); and a step of closing a dispensing device (1) by inserting the cup (40) into said cylindrical neck (3) of the storage box (2), the inner face (4B) of said cup ( 40) facing the hollow body (20) of the storage box (2).
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    同族专利:
    公开号 | 公开日
    FR3038589B1|2019-08-30|
    FR3038589A1|2017-01-13|
    GB201512083D0|2015-08-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2854176A|1955-10-19|1958-09-30|Illinois Tool Works|Dispensing valve assembly|
    US3819090A|1972-05-12|1974-06-25|Reflex Corp Canada Ltd|Aerosol valve cup and safety collar|
    EP1052190A1|1999-05-11|2000-11-15|L'oreal|Mounting device of a valve on a container, and distributor for a product under pressure equipped with the same|
    US20090001103A1|2007-06-28|2009-01-01|Wanbaugh Linn D|Bottle and valve fitment for containers|
    法律状态:
    2021-05-26| MM| Lapsed because of non-payment of the annual fee|Effective date: 20200831 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1556503A|FR3038589B1|2015-07-09|2015-07-09|PRESSURIZED PRODUCT DELIVERY DEVICE, DOSABLE DISPENSING VALVE AND METHOD FOR ASSEMBLING THE SAME.|
    FR1556503|2015-07-09|
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