• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    A spray attachment (1) for the radial discharge of liquid substances is described. The spray attachment (1) comprises a cap (2) with an annular circumferential, closed shell (3) with a wall, on the inside of the outer side first fastening means are formed. The first fastening means are designed to engage in corresponding second fastening means, which may be provided on an outer wall or inner wall of a container neck. At one longitudinal end of the jacket (3) is closed by a top surface (4) having a recess. In the region of the recess, a receiving part (5) for receiving an insert part (6) is arranged. The receiving part (5) has a circumferentially closed conical receiving surface. The conical receiving surface is designed to receive a corresponding circumferentially closed conical peripheral surface of the insert part (6). The conical receiving surface of the receiving part (5) and the conical peripheral surface of the insert part (6) define at least one passageway (7) for the liquid substance, when the conical receiving surface and the conical peripheral surface abut each other. Through the passageway (7), the liquid substance can be discharged.
    公开号:CH715006A1
    申请号:CH6172018
    申请日:2018-05-17
    公开日:2019-11-29
    发明作者:Bösch Klemens；Müller Florian
    申请人:Alpla Werke Alwin Lehner Gmbh & Co Kg；
    IPC主号:
    专利说明:

    Description: The invention relates to a spray attachment for the radial application of liquid substances according to the preamble of patent claim 1.
    In the household, in trade and industry but also in pharmaceutical and cosmetic applications, it is often necessary to spray housed liquid substances in a container, for example in a bottle or in a vial. According to the present invention, “liquid substances” are understood to be liquids whose viscosity is low enough to ensure undisturbed continuous flow. Spray devices for liquids and creams are known from the prior art, for example, which are applied with a spray pump via a spray valve. A diversified application of liquid substances is only possible to a limited extent with such spray valves. In addition, the spray valves show a tendency to clog over time, which can further impair the spreading of the spray burst. Other known spray systems have a squeezable plastic container, on the container neck of which an attachment provided with sieve-like openings is arranged. The attachment is usually a multi-component injection molded plastic part. The passage openings are formed in a type of sieve plate, which consists for example of silicone. The attachment can also comprise a closure cap which is connected to the attachment via a molded-on tab. By squeezing the plastic container together, the liquid substance stored inside the container is sprayed through the sieve-shaped through openings.
    A disadvantage of the known spray systems is their complex and expensive construction. The diameter of the through-openings of the attachment parts is often quite different with regard to their diameter and therefore often does not allow a uniform spray jet when used. The spray jet is often only fanned out unevenly.
    The object of the present invention is therefore to provide a spray attachment which is suitable for use in connection with liquid substances. The liquid substance should be able to be discharged from a container in a spray-like manner by squeezing the container wall.
    The solution to these problems consists in a spray attachment for the radial application of liquid substances, which has the features stated in claim 1. Further developments and / or advantageous variants of the invention are the subject of the dependent claims.
    [0006] The invention proposes a spray attachment for the radial application of liquid substances. The spray attachment comprises a cap with a circular, closed jacket with a wall, on the inside or outside of which first fastening means are molded. The first fastening means are designed to engage corresponding second fastening means, which can be provided on an outer wall or inner wall of a container neck. At one longitudinal end, the jacket is closed by a cover surface which has a recess. A receiving part for receiving an insert part is arranged in the region of the recess. The receiving part has a conical receiving surface which is closed in the circumferential direction. A substantially correspondingly conical peripheral surface is formed on the insert part. The insert has an axial extent which is equal to or less than an axial extent of the receiving part. The conical receiving surface of the receiving part and the conical peripheral surface of the insert delimit at least one passage channel for the liquid substance, through which the liquid substance can be dispensed when the conical receiving surface and the conical peripheral surface abut each other.
    By the at least one passage channel is limited by the interacting conical surfaces of the receiving part and the insert, there are significantly greater degrees of freedom for their formation and manufacture than in the sieve-like inserts of the prior art. Here, the passage channel formed by the conical surfaces of the receiving part and the insert part resembles a tube with an inlet opening and an outlet opening. The at least one passage channel can also be produced with a significantly greater uniformity in the mass-technical manufacturing process, which has an advantageous effect on the unit costs. Regarding the manufacturing process, it should be noted that the insert part can be produced both spatially and temporally separately from the rest of the closure, so that these two parts must be assembled into one another after the injection molding has been completed, as well as in a two-component injection molding process in which the complete spray attachment is already in a process step is produced. The design according to the invention also makes it possible to produce the at least one passage channel with smaller diameters, without the need for expensive manufacturing processes, such as e.g. Laser drilling, having to resort. The receiving part can, for example, be equipped with projections which lock behind the insert during assembly and prevent the insert from falling out in a form-fitting manner. Here, the insert part, which can be manufactured as a single part, can be movable or fixed in the axial direction after assembly in the receiving part, which is generally formed in one piece on the cover surface of the jacket. Movable in the axial direction means that the insert part relative to the receiving part from a first position in which the conical receiving surface of the receiving part and the conical peripheral surface of the insert part abut one another, in a second position in which the conical receiving surface of the receiving part and the conical peripheral surface of the Insert part are spaced from each other, is displaceable, and vice versa. A partial region of the at least one passage channel can thus be formed in the form of a groove on the conical receiving surface of the receiving part and / or the conical peripheral surface of the insert part. Usually
    CH 715 006 A1, this section will be U-shaped or V-shaped. The at least one through-channel can thus be formed in that the conical receiving surface of the receiving part and the conical peripheral surface of the insert part abut one another. The passage channel can thus be formed by covering the groove on the conical receiving surface or on the conical peripheral surface with a flat region of the conical peripheral surface or the conical receiving surface, or by covering the groove on the conical receiving surface and the groove on the conical one Overlap the circumferential surface. Passage channels can be formed which have a cross-section down to about 0.005 mm 2 and thus form a very fine jet. Such fine openings cannot be achieved in the spraying process; rather, such small cross-sections would have to be drilled, for example, using a laser. In the assembled state, the cone of the conical peripheral surface of the insert part can be oriented such that its base surface faces the free end of the casing, or, when the spray attachment is mounted on a container, to the contents stored in the container. If the insert part can be displaced along its central axis in the receiving part, the insert part can be displaced from the second position into the first position by squeezing the container, so that the conical receiving surface of the receiving part and the conical peripheral surface of the insert part abut one another and thereby the at least one Passage channel is formed. The squeezing can cause an elastically reversible deformation of the container wall of the container, which can be carried out several times without damaging the container. By squeezing the container wall, the pressure in the container can increase and the stored content can press onto the base of the conical peripheral surface of the insert part and shift the insert part into the first position before the stored liquid substance at least partly the container in one by the at least one Passage channel formed beam leaves. Due to the design as a conical receiving surface of the receiving part and a conical peripheral surface of the insert part, an increase in the pressure inside the container also leads to an increase in the contact pressure of the conical receiving surface against the conical peripheral surface or vice versa. As a rule, the angles that enclose the conical receiving surface with the central axis of the receiving part and the conical peripheral surface with the central axis of the insert part are the same, so that the conical receiving surface and the conical peripheral surface lie flat against one another and not just a linear contact. The two angles are usually designed in such a way that the conical peripheral surface and the conical receiving surface do not abut one another in a self-locking manner. If sufficient liquid substance is discharged from the container by squeezing the container, the discharge of the liquid substance can be interrupted by reducing the pressure on the container to zero. In addition, through a restoring force of the container, it can assume its original shape while generating a negative pressure. As a result of the generation of the negative pressure, the insert part can be shifted from the first position to the second position, so that the cross section through which the ambient air can get into the interior of the container can be enlarged compared to the cross section of the passage channel. As a result, the container can return to its original shape before being squeezed in a shorter period of time than if the ambient air had to get into the interior of the container solely through the cross section of the passage. Usually more than one passage channel is formed in one spray head. In principle, the liquid substance from the spray attachment can be applied in a convergent, parallel and divergent manner by appropriate alignment of the conical receiving surface of the receiving part and the conical circumferential surface of the insert part and by appropriate design of the grooves. If there is more than one passage channel, the rays can essentially meet at one point or converge without contact when they are converged.
    In one embodiment of the invention, the at least one passage channel is formed by a groove which is formed on the conical receiving surface of the receiving part and / or on the conical peripheral surface of the insert part. This results in the following three variants for the formation of the passage channels: groove / s on the conical receiving surface; conical peripheral surface smooth groove / s on the conical peripheral surface; conical receiving surface smooth groove / s on the conical receiving surface and groove / s on the conical peripheral surface.
    The number of grooves on the conical receiving surface may differ from the number of grooves on the peripheral surface. The groove / s on the conical receiving surface and the groove / s on the conical peripheral surface can be congruent, so that the cross-sectional area of the groove / s on the conical peripheral surface and the cross-sectional area of the groove / s on the conical receiving surface add up. The conical receiving surface as well as on the conical peripheral surface can also be arranged such that the respective groove (s) do not overlap. The total number of passage channels can thus be increased very easily. The cross-sectional area of the groove (s) is generally U-shaped or V-shaped for manufacturing reasons, but can preferably have any shape that is free of undercuts, so that no slides are required for demolding from the injection mold.
    An embodiment variant of the invention can provide that the at least one passage channel has a cross-sectional area of approximately 0.005 mm 2 to approximately 3.5 mm 2 . The larger cross-sectional areas can be created, for example, in that both the conical receiving surface and the conical peripheral surface are provided with an equal number of grooves and the grooves are made to overlap with one another.
    In a further embodiment of the spray attachment, the receiving device and the insert part can have a circular cross section. The conical receiving surface and the conical peripheral surface can then be designed, for example, as frustoconical surfaces.
    CH 715 006 A1 [0012] An exemplary embodiment of the spray attachment can provide that the insert part has first positioning means which interact with second positioning means on the receiving part. As a result, the insert part can be positioned precisely in the receiving device during assembly.
    In a further embodiment of the spray attachment, the insert is rotatable relative to the conical receiving surface between 0.5 ° and 179.5 °, preferably between 0.5 ° and 90 ° and particularly preferably between 5 ° and 60 °. In this way, the user has the option, if necessary, of changing the cross-sectional width of the passage channels by rotating the insert part in relation to the receiving part. This embodiment variant is particularly suitable for a spray attachment in which both the conical receiving surface on the receiving part and the conical peripheral surface of the insert part are provided with grooves.
    In a further embodiment of the spray attachment, the receiving part and the insert part are secured against rotation relative to one another. This ensures that, depending on the intended use, either the grooves on the conical receiving surface of the receiving part and the grooves on the conical peripheral surface of the insert part overlap or do not overlap. It can therefore be possible to cover two different purposes without changing the parts. On the one hand, a spray attachment can be created that dispenses a lot of liquid substance with a few, but thick jets, and on the other hand, that usually dispenses less liquid with twice the number of jets, but which are considerably thinner, at the same pressure. The difference in the liquid output at the same pressure can be due to the fact that despite the sum of the same cross-sectional area of the passage channels, the proportion of the laminar flow is higher in the spray attachment with more passage channels.
    In one embodiment variant of the spray attachment, the insert part is held firmly in the receiving part along its central axis. This variant is particularly suitable for passage channels with a larger cross-sectional area, since enough air can pass through them to allow the container to return to its original position in a short time after being squeezed.
    In an alternative embodiment of the spray attachment, the insert part is displaceable along its central axis in the receiving part between a first position and a second position, and vice versa. In the second position, in which the insert part lies, for example, on the projections of the receiving part, the conical peripheral surface of the insert part is at a distance from the conical receiving surface of the receiving part. As a result, an annular gap for the entry of air is formed between the two conical surfaces. If the liquid substance is pressed against the insert for a spray jet, this is shifted in the direction of the conical receiving surface until the two conical surfaces abut one another and thus delimit the passage channels. It can further be provided that the insert part is prestressed into the second position by spring force. For this purpose, for example, resilient tabs can be arranged in the receiving part, which protrude from an underside of the cover surface of the cap and press on a front surface of the insert part. The insert part can be displaceable by a predetermined amount along its axial extent in the receiving part. The dimension can be in the range from approximately 0.05 mm to approximately 5.0 mm, preferably in the range from approximately 0.2 mm to approximately 3.0 mm.
    [0017] The spray attachment can be designed in various variants with regard to the fanning out of the spray jet. For example, in one embodiment variant of the spray attachment, the passage channels delimited by the grooves in the conical receiving surface of the receiving part and / or in the conical peripheral surface of the insert part have a divergent course in the spray direction. As a result, the spray of the liquid substance is fanned out as soon as it leaves the spray attachment.
    According to a further exemplary embodiment of the invention, each central axis of at least two passage channels lies in one plane, which is defined by a surface line of the conical receiving surface of the receiving part and a central axis of the receiving part, or by a surface line of the conical peripheral surface of the insert part and a central axis of the insert part. is spanned. In this case, the passage channels or their central axes can extend essentially along surface lines of the conical receiving surface of the receiving part or of surface lines of the conical peripheral surface of the insert part. Depending on the direction in which the conical peripheral surface increases or the conical receiving surface decreases, the at least two beams are divergent or convergent. When the at least two jets are converged from the spray head, they theoretically meet at a point which, however, actually represents a mixing area, in order to unite there to form a common jet, which essentially follows the central axis of the spray attachment. Surprisingly, it has been shown that this is a united, common jet. This energy from the swirling can be used, for example, to foam cleaning agents. This mixing area for the individual jets for the liquid substance can be at a distance of approximately 2 mm to approximately 1000 mm, preferably approximately 4 mm to approximately 30 mm, from the insert. Furthermore, the passage channels can be designed in such a way that their central axes form an angle to the respective surface lines in the respective plane. As a result, the passage channels, or the jets of liquid substance applied through the passage channels, no longer follow the extension of the surface line. In this way, rays can be generated which, despite the advantages resulting from the interaction of the conical receiving surface of the receiving part and the conical peripheral surface of the insert, follow essentially parallel to the central axis of the receiving part or to the central axis of the insert. Ultimately, this allows jets to be applied from the spray attachment which are essentially parallel to the central axis of the spray attachment.
    CH 715 006 A1 [0019] According to a further exemplary embodiment of the invention, each central axis of at least two passage channels intersects a plane at an angle. Here, the central axes of the at least two passage channels extend essentially parallel to the conical receiving surface of the receiving part or essentially parallel to the conical peripheral surface of the insert part. Furthermore, the plane is spanned by a surface line of the conical receiving surface of the receiving part and a central axis of the receiving part or by a surface line of the conical peripheral surface of the insert part and a central axis of the insert part. Furthermore, the angle is greater than 0 ° and less than 90 °, preferably greater than 5 ° and less than 45 °. The grooves extend in the form of a conical spiral on the conical receiving surface and / or the conical peripheral surface. The grooves can be left-turning and / or right-turning. The angle at which the central axis of the passage channel intersects the plane can also change along the passage channel. This creates a double curved central axis. The above angle information preferably relates to the opening mouth of the passage through which the jet exits the spray attachment. Such a configuration of the passage channels allows the jets that deliver the liquid substance to be convergent without touching one another. As a rule, the passage channels will extend essentially parallel to one another. Of course, it is also possible to vary the cross section of the grooves over their length in shape and / or their surface area. In this way, a sufficient diversification of the spray jet is achieved even when the passage channels are convergent.
    According to a further exemplary embodiment of the invention, the angles at which the central axes of the passage channels intersect the plane are the same. This means that all passageways are essentially parallel to one another.
    In a further embodiment of the spray attachment, depending on the mounting method, the receiving part for the insert part or the insert part itself or both parts axially protrude from an outside of the cover surface of the cap and form a neck-like extension. The neck-like extension can then be used, for example, for the sealing fixing of a closure.
    In a further embodiment of the spray attachment, a hinge joint, for example a film hinge, is formed on the cap and is connected to a cover part. A projecting closure cone is arranged on an inner surface of the cover part facing the cover surface and cooperates in a sealing manner with the connection piece-like extension on the cover surface of the cap.
    According to a further exemplary embodiment of the invention, the spray attachment can be closed in a fluid-tight manner by means of a screw cap.
    [0024] According to a further exemplary embodiment of the invention, the spray attachment can be closed in a fluid-tight manner by means of a push-pull closure.
    [0025] According to a further exemplary embodiment of the invention, the spray attachment is preferably produced in a plastic injection molding process and / or plastic pressing process. All plastics suitable for injection molding can be used as plastics.
    An embodiment variant of the spray attachment provides that at least the cap with the jacket, including the cover surface and receiving part, is made of a plastic from the group consisting of polyolefins, in particular polyethylene and polypropylene, HDPE, LDPE, their copolymers, recyclates from the polyolefins mentioned and Mixtures of the polyolefins mentioned and of polyesters, in particular PET, PER PPF, PBT, whose copolymers, recyclates are made from the polyesters mentioned and mixtures of the polyesters mentioned. The plastics listed have been tried and tested for the injection molding process and their chemical and physical parameters are known.
    In a further embodiment of the spray attachment, the jacket, including the top surface and the receiving part, and the insert part are made of the same plastic. This variant of the spray attachment has the advantage of particularly good dimensional stability, since the cap, in particular the receiving part, and the insert have the same shrinkage. Of course, the plastics used can be different from each other.
    A plastic container with a spray attachment according to the invention according to one of the described variants has a container body which is elastically reversibly squeezable at least in some areas. The liquid substance is sprayed by squeezing the container body together by hand. If the pressing force of the hand diminishes, air can enter the interior of the container through the passage channels and / or through an annular gap between the conical surfaces of the receiving part and the insert part, as a result of which the container body expands again due to its restoring force and assumes its original shape. The plastic container can be produced in a blow molding process, for example in an extrusion blow molding process or in a stretch blow molding process. Further advantages and features emerge from the following description of exemplary embodiment variants of the invention with reference to the schematic drawings. In a schematic representation that is not to scale, they show in different views:
    1 to 5 show a first exemplary embodiment of the invention;
    6 to 10 show a second exemplary embodiment of the invention;
    CH 715 006 A1
    11 to 13 a third embodiment of the invention; 14 to 18 a fourth embodiment of the invention; and 19 to 21 a fifth embodiment of the invention.
    In the schematic illustrations of the various embodiments, the same elements and components of the spray attachment have the same reference numerals.
    1 to 5 show a first exemplary embodiment of a spray attachment and the associated components. In the perspective view in FIG. 1, the spray attachment is provided with the reference number 1 as a whole. It comprises a cap 2 with an essentially cylindrical jacket 3. A longitudinal end of the jacket 3 is closed with a cover surface 4. A closure part 100 is articulated on the jacket 3 of the spray attachment 1 via a hinge joint 101. The hinge joint 101 can be, for example, a bistable joint or a film hinge. The closure part 100 shown does not necessarily have to be connected to the jacket 3 of the cap 2 via a joint. In an alternative embodiment variant, it can also be designed, for example, as a separate removable part. An outer side 41 of the top surface 4 is axially overhanged by a section of a receiving part 5 and forms a neck-like extension 51. The neck-like extension 51 serves to fix a sealing cone 103, which projects from an inner wall 102 of the closure part (FIG. 5). As a result, the cover part 100 can be fixed to the cap 2 in a non-positive or positive manner. 1 further shows that an insert part 6 is held in the receiving part 5. The receiving part 5 and the insert part 6 limit passage channels, which are indicated by the reference numeral 7 and are described in more detail below.
    FIG. 2 shows a view from below into the cap 2 in the direction of an inner side 42 of the top surface 4. The jacket 3 has first fastening means 32 on its inner wall 31. For example, the first fastening means 32, as indicated in FIG. 2, are designed as threaded sections. It goes without saying that the first fastening means 32 can also be designed as threads, as projecting or recessed elements of a bayonet catch and the like. The first fastening means 32 are designed to engage second fastening means, which can be designed to correspond to the first fastening means 32 and can be arranged on a container neck, for example on a bottle neck. In the embodiment shown in Fig. 2, the second fastening means are designed as threads that are formed on the circumference of the container neck.
    From Fig. 2 it can be seen that the top surface 4 is provided with a recess 44. The recess 44 is bordered by a conical receiving surface 55 which is closed in the circumferential direction and forms a component of the receiving part 5. The receiving part 5 receives the insert part 6. As shown in FIG. 4, a conical peripheral surface 65 of the insert part 6 comes into contact with the conical receiving surface 55 on the receiving part 5. The receiving surface 55 on the receiving part 5 and the peripheral surface 65 on the insert part 6 have essentially the same conicity. As shown, these are preferably frustoconical surfaces. The insert part 6 mounted in the receiving part 5 is, for example, held axially immovably in the receiving part 5. For this purpose, for example, an annular extension 52 is formed on the receiving part 5, which extends in the direction of the jacket 3 of the cap 2 and has one or more projections 53 facing inwards. When the insert part 6 is mounted in the receiving part 5, the projections 53 engage in an annular groove 62 on a flange 61, as can be seen in FIG. 3. Instead of an annular extension 52, resilient tabs with inwardly facing projections can also be provided on the receiving part 5, for example. The insert part 6 has an axial extent that is equal to or less than an axial extent of the receiving part 5. In the case of an insert part 6, the axial extent of which is smaller than that of the receiving part 5, the insert part 6 can also be held in the receiving part 5 so as to be axially movable. For example, the receiving part 5 has an extension or tabs with inwardly directed projections which engage behind the flange 61 of the insert part 6. In the rest position, in which the insert part 6 rests, for example, on the projections of the receiving part 5, the conical peripheral surface 65 of the insert part 6 is at a distance from the conical receiving surface 55 of the receiving part 5. As a result, an annular gap for the entry of air is formed between the two conical surfaces 55, 65. If liquid substance is pressed against the insert part 6 for a spray jet, this is displaced in the direction of the conical receiving surface 55 until the two conical surfaces 55, 65 abut one another and thus limit the passage channels 7. It can further be provided that the insert part 6 is prestressed into its rest position by spring force. For this purpose, for example, resilient tabs can be arranged in the receiving part 5, which protrude from an underside of the top surface 4 of the cap 2 and press on a front surface of the insert part 6. The axial mobility of the insert 6 can be from about 0.05 mm to about 5.0 mm, preferably from about 0.2 mm to about 3.0 mm.
    Fig. 3 shows a perspective view of the insert part 6. It has a hat-like shape. The conical peripheral surface 65 of the insert part 6 is provided with grooves 66. In the assembled state of the insert part 6, the grooves 66, in cooperation with the receiving part 5, form the passage channels 7 already mentioned. In particular, the passage channels 7 are limited when the conical peripheral surface 65 of the insert part 6 and the conical receiving surface 55 of the receiving part 5 lie against one another. Positioning elements can be formed on the flange 61 of the insert part 6, which interact with corresponding receptacles on the receiving part 5. As a result, the position of the insert part 6 in the receiving part 5 can be determined in the circumferential direction. It can also be seen that the grooves 66 are parallel to each other6
    CH 715 006 A1 lei. Furthermore, the grooves 66 extend on the conical peripheral surface 65 of the insert part 6. It can also be seen that each central axis 11 of the grooves 66 intersects a plane E at an angle a, which in the present exemplary embodiment is approximately 15 °, the plane E passing through a generatrix M of the conical peripheral surface 65 of the insert part 6 and a central axis 11 of the insert part 6 is spanned. The grooves 66 can have any shape in cross-section and are U-shaped in the present exemplary embodiment.
    The second exemplary embodiment of the spray attachment shown in FIGS. 6 to 10 has in principle the same structure as the first exemplary embodiment according to FIGS. 1 to 5. In contrast to the first exemplary embodiment, however, the conical peripheral surface is 65 of the insert part 6 unstructured or smooth (Fig. 8). For this, however, grooves 56 are formed in the conical receiving surface 55 (FIG. 7). When the insert part 6 is installed, the grooves 56 in the conical receiving surface 55 of the receiving part 5, in cooperation with the insert part 6, form the passage channels 7, which in turn are delimited by the conical receiving surface 55 on the receiving part 5 and the conical peripheral surface 65 on the insert part 6.
    The third embodiment of the spray attachment 1 shown in FIGS. 11 to 13 represents a combination of the first and second embodiments. In particular, FIGS. 12 and 13 show that both the conical receiving surface 55 of the receiving part 5 and the conical peripheral surface 65 of the insert 6 are provided with grooves 56 and 66, respectively. Fig. 11 shows the situation with the insert 6 installed when the grooves 56, 66 have been made to overlap with one another. Then the cross sections of the grooves 56 in the conical receiving surface 55 and the grooves 66 in the conical peripheral surface 65 add up. In an alternative embodiment variant of the spray attachment, not shown, the grooves cannot be made to overlap either. Then the numbers of the grooves in the conical receiving surface and the grooves in the conical peripheral surface add up. The number of grooves in the peripheral surface and in the receiving surface can differ from one another. It can also be provided that the user can rotate the insert part with respect to the receiving part to a predetermined extent if necessary, depending on whether a larger cross section of the passage channels or a larger number of passage channels is of interest to him.
    In the fourth exemplary embodiment of the spray attachment 1 shown in FIGS. 14 to 18, FIG. 15 in particular shows that the receiving part 5 has a cone 57 tapering in the direction of the free end of the jacket 3. The cone 57 is held by webs 43, which bridge the recess 44 in the top surface 4 approximately radially. The cone 57 is preferably arranged approximately in the middle of the recess 44. The cone 57 has an outer surface, which forms the conical receiving surface 55 in this exemplary embodiment. The insert part 6 shown in FIG. 16 is slightly modified compared to the insert parts described on the basis of the first three exemplary embodiments. In particular, the modified insert part 6 has an inner peripheral surface, which in turn is referred to as the peripheral surface 65 of the insert part 6. On an upper side 62 of the section of the insert part 6 which extends from the flange 61, radial recesses 63 are arranged which, when the insert part 6 is mounted, receive the radial webs 43 on the recess 44. These recesses 63 in connection with the radial webs 43 can also represent positioning means which also prevent rotation of an insert part 6 which can be displaced along its central axis. The peripheral surface 65 of the insert part 6, which is designed as an inner peripheral surface, has grooves 66 which, when the insert part 6 is mounted, form the passage channels 7 in connection with the receiving part 5. The passage channels 7 are in turn delimited by the conical receiving surface 55 on the cone 57 and the corresponding conical peripheral surface 65 on the inner circumference of the insert part 6. While the circumferential surface 65 of the insert 6 is provided with grooves 66 in the exemplary embodiment shown, it goes without saying that, analogously to the embodiment variants described with reference to exemplary embodiments 1 to 3, the grooves can alternatively or additionally be arranged on the receiving surface 55 of the cone 57. The same applies to the rotatability of the insert part 6 relative to the receiving part 5.
    19 to 21, a fifth embodiment of the spray attachment is shown, which in turn bears the reference number 1. In contrast to the exemplary embodiments described above, in this variant of the spray attachment 1, the insert part 6 cannot be mounted in the receiving part 5 through the jacket 3 of the cap 2, but rather is placed on the receiving part 5 from the outside, which in the region of the recess 44 in the top surface 4 is arranged. As can be seen in FIG. 21, the receiving part 5 again has a conical receiving surface 55. As FIG. 20 shows, the insert part 6 has a conical peripheral surface 65, which is designed as an inner peripheral surface. The conical peripheral surface 65 of the insert is equipped with grooves 66. Together with the conical receiving surface 55 of the receiving part 5, the grooves 66 form the passage channels 7 for a liquid substance. Again, the grooves can be arranged on the conical receiving surface 55 of the receiving part 5 or on both conical surfaces instead of on the conical peripheral surface 65 of the insert part 6. This in turn results in the possibility of creating passages 7 with larger cross sections when the conical circumferential surface 65 and the conical receiving surface 55 abut one another or to increase the number of passageways 7. It can be provided that even the user can choose either the variant with larger cross sections of the passage channels 7 or the other variant with a larger number of passage channels 7 if required.
    It is common to all of the described design variants of the spray attachment 1 that the through-channels delimited by the conical receiving surface 55 and the conical peripheral surface 65 have a cross section in the range between approximately 0.05 mm 2 and approximately 3.5 mm 2 .
    CH 715 006 A1 As can be seen from the figures in FIGS. 3, 7, 12, 13 and 20, the grooves 56, 66 are in the conical circumferential surfaces 65 and / or receiving surfaces 55 arranged inclined with respect to the axial extent of the cap 2. In these variants, the passage channels 7 delimited by the conical receiving surface 55 of the receiving part 5 and by the conical peripheral surface 65 of the insert part 6 have a convergent course in the spraying direction. This means that the individual jets of the liquid substance applied are first directed towards one another before the spray jet is fanned out. The inclined course of the grooves 56, 66 serves to ensure that the individual jets of liquid substance that are applied do not touch one another. In this way, a sufficient fanning out of the spray jet is achieved even when the passage channels 7 converge.
    In an alternative embodiment variant of the spray attachment with passage channels which extend along the generatrix M, these can, however, also be aligned with one another in such a way that the individual spray jets in the spray direction form a focus-like mixing area located outside the spray attachment, in which the spray jets are formed essentially combine into one spray. This embodiment variant can be of interest, for example, for substances that are still to be foamed when being applied. The focus-like mixing area can be at a distance from the insert 6 of approximately 2 mm to approximately 1000 mm, preferably approximately 4 mm to approximately 30 mm. The grooves in the (inner) peripheral surface 65 of the insert part according to FIG. 16 have a divergent course in the spray direction. As a result, the spray of the liquid substance is removed from the central axis of the insert as soon as it leaves the spray attachment 1. The individual beams cannot touch each other.
    [0043] The spray attachment according to the invention is designed for spraying liquid substances. According to the present invention, “liquid substances” are understood to be liquids whose viscosity is low enough to ensure undisturbed continuous flow. The spray attachment is preferably produced in a plastic injection molding process and / or a plastic pressing process. All plastics suitable for injection molding and / or plastic pressing processes can be used as plastics. In this case, at least the cap with the jacket, including the cover surface and the receiving part, can be made in one piece from a plastic from the group consisting of polyolefins, in particular polyethylene and polypropylene, HDPE, LDPE, their copolymers, recyclates from the polyolefins mentioned and mixtures of the polyolefins mentioned and from polyesters, in particular PET, PER PPF, PBT, their copolymers, recyclates made from the stated polyesters and mixtures of the stated polyesters. The plastics mentioned have been sufficiently tested for the injection molding process and / or plastic pressing process and their chemical and physical parameters are known.
    In a further embodiment of the spray attachment, the jacket, including the top surface and the receiving part, and the insert part are made of the same plastic. This variant of the spray attachment has the advantage of particularly good dimensional stability, since the cap, in particular the receiving part, and the insert have the same shrinkage.
    A plastic container with a spray attachment 1 according to the invention according to one of the described variants has a container body which is elastically reversibly squeezable at least in some areas. The liquid substance is sprayed by squeezing the container body together by hand. Here, the displaceable insert part 6 is shifted from a second, open position into the first, closed position by the pressure, which is higher than the atmosphere, within the container body, so that the conical peripheral surface 65 of the insert part 6 and the conical receiving surface 55 of the receiving part 5 abut one another. Here, the liquid substance is discharged from the container body through the passage channels 7 formed by the conical surfaces 55, 65 lying on top of one another. If the pressing force of the hand decreases, the endeavor of the container body to return to its original shape due to its rigidity forms a suppression in the container body from the atmosphere surrounding the container. This allows air to enter the interior of the container through the passageways 7, causing the container body to expand again and assume its original shape. In the case of a displaceable insert part 6, the depression present in the container body can be withdrawn from the first position into the second position, so that an annular gap is formed between the conical surfaces 55, 65 of the receiving part 5 and the insert part 6, through which air into the Can reach the container body and thus the resetting of the container body can be carried out more quickly. It should be noted that the displacement of the insert part from the first position into the second position can also be carried out with spring support. The plastic container can be produced in a blow molding process, for example in an extrusion blow molding process or in a stretch blow molding process.
    The invention has been explained on the basis of specific exemplary embodiments, some of which are shown in the figures. The above description of the specific exemplary embodiments serves only to explain the invention and is not to be regarded as restrictive. Rather, the invention is defined by the patent claims and the equivalents which are obvious to the person skilled in the art and which are encompassed by the general inventive concept.
    权利要求:
    Claims (22)
    [1]
    claims
    1. Spray attachment for the radial application of liquid substances comprising a cap with an annular circumferential, closed jacket with a wall, on the inside or outside of which first fastening means are formed, which are designed to engage in corresponding second fastening means, wel
    CH 715 006 A1 che can be provided on an outer wall or inner wall of a container neck, and with a top surface which closes a longitudinal end of the jacket and has a recess and is designed to receive an insert part, characterized in that in the region of the recess a receiving part with a is arranged in the circumferential direction and is designed to receive a conical circumferential surface of the insert part which essentially corresponds to the conical reception surface, the conical reception surface on the receiving part and the conical circumferential surface of the insert part if the conical reception surface and the conical circumferential surface abut each other, limit at least one passage channel for the liquid substance through which the liquid substance can be dispensed.
    [2]
    2. Spray attachment according to claim 1, characterized in that the at least one passage channel is formed by a groove which is formed on the conical receiving surface of the receiving part and / or on the conical peripheral surface of the insert part.
    [3]
    3. Spray attachment according to claim 1 or 2, characterized in that the at least one passage channel has a cross-sectional area of approximately 0.005 mm 2 to 3.5 mm 2 .
    [4]
    4. Spray attachment according to one of the preceding claims, characterized in that the insert part has first positioning means which cooperate with second positioning means on the receiving part.
    [5]
    5. Spray attachment according to one of the preceding claims, characterized in that the insert part is rotatable relative to the conical receiving surface between 0.5 ° and 179.5 °, preferably between 0.5 ° and 90 ° and particularly preferably between 5 ° and 60 ° is.
    [6]
    6. Spray attachment according to one of claims 1 to 4, characterized in that the receiving part and the insert are non-rotatable relative to one another.
    [7]
    7. Spray attachment according to one of the preceding claims, characterized in that the insert part is held firmly in the receiving part along its central axis.
    [8]
    8. Spray attachment according to one of claims 1 to 6, characterized in that the insert part is displaceable along its central axis in the receiving part between a first position and a second position, and vice versa.
    [9]
    9. Spray attachment according to claim 8, characterized in that the insert part can be displaced along its central axis in the receiving part by a predetermined amount which is in the range from approximately 0.05 mm to approximately 5.0 mm, preferably in the region of approximately 0.2 mm up to about 3.0 mm.
    [10]
    10. Spray attachment according to one of the preceding claims, characterized in that each central axis of at least two passage channels lies in a plane which is through a surface line of the conical receiving surface of the receiving part and a central axis of the receiving part, or respectively through a surface line of the conical peripheral surface of the insert part and one The central axis of the insert is spanned.
    [11]
    11. Spray attachment according to one of claims 1 to 9, characterized in that each central axis of at least two through channels intersects a plane at an angle, the central axes of the at least two through channels essentially parallel to the conical receiving surface of the receiving part or substantially parallel extend to the conical peripheral surface of the insert part, the plane being spanned by a generatrix of the conical receptacle surface of the receptacle part and a central axis of the receptacle part or by a generatrix of the conical peripheral surface of the insert part and a central axis of the insert part, the angle being greater than 0 ° and is less than 90 °, preferably greater than 5 ° and less than 45 °.
    [12]
    12. Spray attachment according to claim 11, characterized in that the angles at which the central axes of the passage channels intersect the plane are the same.
    [13]
    13. Spray attachment according to one of the preceding claims, characterized in that surface lines of the conical receiving surface of the receiving part or surface lines of the conical peripheral surface of the insert meet essentially at one point, the point being in the direction of extension of the shell from the top surface.
    [14]
    14. Spray attachment according to one of claims 1 to 12, characterized in that surface lines of the conical receiving surface of the receiving part or surface lines of the conical circumferential surface of the insert part meet essentially at one point, the point being opposite to the direction of extension of the shell from the top surface ,
    [15]
    15. Spray attachment according to one of the preceding claims, characterized in that the insert is essentially designed as a truncated cone.
    [16]
    16. Spray attachment according to one of the preceding claims, characterized in that the receiving part and / or the insert part axially project beyond an outer side of the cover surface of the cap and form a neck-like extension.
    [17]
    17. Spray attachment according to claim 16, characterized in that a hinge joint is formed on the cap, which is connected to a cover part which, on an inner surface facing the cover surface, has a locking cone projecting therefrom, which cooperates sealingly with the neck-like extension.
    CH 715 006 A1
    [18]
    18. Spray attachment according to one of the preceding claims, that it is produced in a plastic injection molding process and / or plastic pressing process.
    [19]
    19. Spray attachment according to one of the preceding claims, characterized in that at least the jacket together with the top surface and receiving part in one piece from a plastic from the group consisting of polyolefins, in particular polyethylene and polypropylene, HDPE, LDPE, their copolymers, recyclates from said polyolefins and mixtures of the said polyolefins and of polyesters, in particular PET, PER PPF, PBT, whose copolymers, recyclates are made from the said polyesters and mixtures of the said polyesters.
    [20]
    20. Spray attachment according to one of the preceding claims, characterized in that the jacket together with the top surface and receiving device and the insert part consist of the same plastic.
    [21]
    21. Plastic container with a spray attachment according to one of the preceding claims, characterized in that the plastic container has a container body which is elastically reversibly squeezable at least in regions.
    [22]
    22. Plastic container according to claim 21, characterized in that it is produced in a blowing process.
    CH 715 006 A1


    CH 715 006 A1


    CH 715 006 A1


    CH 715 006 A1

    CH 715 006 A1

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    同族专利:
    公开号 | 公开日
    CN112135781A|2020-12-25|
    BR112020023270A2|2021-02-23|
    EP3793912A1|2021-03-24|
    CH715006A9|2020-01-15|
    US20210069734A1|2021-03-11|
    WO2019219278A1|2019-11-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3321114A|1966-03-04|1967-05-23|Rexall Drug Chemical|Pop-up diaphragm closure|
    WO1999064311A1|1998-06-10|1999-12-16|Vivian Andrew Rocher|Closure cap|
    EP2881334A1|2013-12-04|2015-06-10|Albéa le Tréport|System for dispensing a fluid product contained in a vessel|
    US20150273504A1|2014-03-25|2015-10-01|Albea Le Treport|System for Distributing a Fluid Product Which is Packaged in a Tank|
    GB201601232D0|2016-01-22|2016-03-09|Rieke Packaging Systems Ltd|Dispensing closures and dispensers|
    法律状态:
    2020-01-15| PK| Correction|Free format text: BERICHTIGUNG: RECHERCHENBERICHT. |
    2021-03-31| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    CH00617/18A|CH715006A9|2018-05-17|2018-05-17|Spray attachment for the radial application of liquid substances.|CH00617/18A| CH715006A9|2018-05-17|2018-05-17|Spray attachment for the radial application of liquid substances.|
    EP19714172.4A| EP3793912A1|2018-05-17|2019-03-26|Spray attachment for dispensing liquid substances in the form of a jet|
    CN201980033021.4A| CN112135781A|2018-05-17|2019-03-26|Spray attachment for the spray-like emission of a liquid substance|
    BR112020023270-0A| BR112020023270A2|2018-05-17|2019-03-26|spray attachment, and, plastic container with the spray attachment.|
    PCT/EP2019/057503| WO2019219278A1|2018-05-17|2019-03-26|Spray attachment for dispensing liquid substances in the form of a jet|
    US17/099,940| US20210069734A1|2018-05-17|2020-11-17|Spray attachment for bringing out fluid substances in a jet-like manner|
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