DE1805916A1 - Lid for an aerosol container - Google Patents

Description

The invention relates to a lid for an aerosol container, which comprises a valve, the one with free legs opening of the container lid is associated with penetrating and elastically displaceable tubular shaft relative to the lid and the container, which protrudes outwardly beyond the container lid and serves as an outlet for the aerosol from the container when the shaft is pressed by finger is tilted or otherwise shifted against the bias of a suitable spring means. The valve includes a seal, which seals the opening and sealingly encloses the shaft, and a pot-shaped flange on the shaft, which can be brought into contact with the seal with an upper edge from inside the container, however, it is partially detachable from this, for example by tilting the shaft. The valve also has an orifice on what the amount of aerosol escaping from the container

909826 / 023A

ΟίοΙ.-lng Heinz Lesset Pa'ontoriwalt D - 8 Munich 81 Cosimoslro & e 81 Te'efan (0811) 43 38 20

controls.

The flange and the spring means are both inside a shell arranged, which can be formed substantially cylindrical and open at one end. This open end comes to the plant

! on the "side of the seal facing the inside of the container,

while the other end of the jacket narrows to form a tubular outlet for the aerosol, this outlet allowing a certain amount of the contents of the container to escape into the jacket via a dip tube when the valve is actuated by sliding the shaft.

In the following, such a cover is referred to as "the cover of the above Type ".

In known containers of this type, the shaft with its flange is made of metal and the orifice is provided laterally in the tubular wall of the shaft near the flange and within a space formed by the upwardly bent flange. The provision of the orifice at this point is a particular problem, especially since the opening od not by casting. Like. Can be made. This problem could not be solved even if the shaft and its upwardly encircled

90 9 8 26/0234

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Dipl.-lng. Heim leiser, patent attorney D - 8 MOndhen 81, Coiimostrofee 81 Telephone. (0811 '48 38 20

curved flange would be made of plastic. So far have been however, the shaft and the associated flange are made entirely of metal.

A further disadvantage has so far been found in the manufacture of the shaft and its metal flange proved the fact that it is practically impossible to precisely make the lateral opening in the shaft. In addition, the opening contaminates or corrodes, with corrosion occurring in particular if the container is longer Time is not used.

The invention is based on the object, compared to earlier To provide lids with improved lids which do not have the aforementioned disadvantages. The lid includes a valve of the type described above, which allows the opening to pass through which through the aerosol enters the tubular space of the shaft, to be arranged at such a point that the opening is easy in any suitable manner and with any degree of accuracy desired can be generated. This opening should be arranged in such a way that it is easy to use during manufacture of the shaft its flange can be manufactured by injection molding or compression molding, which has the additional advantage that the

903826/0234

Dipl.-lng. Hein * Uisei patent attorney D - 8 Munich 8ί, CosimaitraM 81 · Telephon: (0811) 48 38 20

Shaft and »a flange made in one piece from a suitable plastic can be produced.

The object is achieved according to the invention in that in a cover of the type described above, the opening that establishes a connection between the hollow of the shaft and the lower end of the tubular Shaft produces space enclosing the container, is to be provided in the upwardly bent flange itself and extends essentially parallel to the axis of the shaft, the connection between the opening and the cavity of the shaft being connected by an. The groove-like channel provided for the main flat outer surface of the flange is formed, whereby this is formed Channel between the opening and the inlet in the tubular shaft extends. In order to operate the valve, a second seal is inside over the substantially flat outer flange surface of the aforesaid jacket arranged; this second seal seals the flange in such a way that an outflow of the aerosol from the container upon actuation of the Ae roe oil valves and penetration of the same into the container is prevented by the jacket.

The arrangement according to the invention also enables the provision of a second orifice at a required distance from the first Orifice within the · cavities · of the shaft, whereby a

, 909826/0234

Oipt.-Ιης. Heim Lwjer, patent attorney D - 8 Munich 81, Cosimastrafe · 81 · Telephone; (0811) 48 33 2Ü

more effective atomization of the aerosol flowing out of the container is achieved before the atomized aerosol is directed into the nozzle usually provided in the spray head at the upper end of the shaft will.

Features essential to the invention are described below with reference to several Explained in the drawing illustrated embodiments. It shows:

Fig. 1 is a longitudinal section through an embodiment according to the Invention,

FIG. 2 shows a view from below of the shaft shown in FIG. 1 and flange of the cover,

3 shows a longitudinal section through a cover according to a further embodiment,

FIG. 4 is a view from below of the cap of the illustrated in FIG. 3 Embodiment and

5 shows a longitudinal section through a shaft with a flange according to a further possible embodiment for use in any of the embodiments of the invention.

In the embodiment according to FIG. 1, the valve comprises a, for example, made of sheet metal or another elastic material, for example

909826 / 023A

Dipl.-lng. Heinz Usj · -, patent attorney D - 8 Munich 81, Cosimastrofte 81 ■ Telephone: (0311) 48 38 20

wise plastic, existing closure surface 10, further a flange 11 is assigned on the circumference, which is secured by a suitable sealing compound 12 is sealed with respect to the upper edge 13 comprising an opening, for example, of a bottle or a container for aerosol will. The shape of the end surface can be chosen so that it fits on any type of container or bottle and by beading or the like. is determinable.

The central part of the Abs öhlußf lache 10 is cylindrical and has a flat portion 14 with a central bore 15 and one cylindrical wall 16. A seal 19 made of rubber or another elastomeric material is in the cavity of the through the wall 16 enclosed central part inserted and lies closely against the inner surface of the flat central portion 14 of the central part. the Seal 10 is provided with a central bore 20, the diameter of which is smaller than that of bore 15.

A cylindrical jacket 21 is housed within the cylindrical part of the end surface, the open end of this jacket is provided with a bead 2.2 on its surface to catch, which is held in the cylindrical part 16 by beading a shoulder 18 after installation in the central part whereby the bead 22 is held firmly between the seal 19 and the shoulder 18. Down to "

909-826 / 0Ϊ3 *

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Dipl.-Ing. Heinz leuer. Patentonwolt D - 8 Munich 81. Coiimastrafce 81 ■ Telephone: (0811) 48 38 20

The jacket grows younger and forms a tubular base 24 which an immersion tube 25 is fixed, which extends in a known manner to near the bottom of the aerosol container.

A shaft 27 is integral with a flange 28 and, by compression molding, for example from nylon, acetal resin or another, made of suitable plastic. The shaft 27 is inserted through the central bore 20 of the seal 19, where it is firmly seated in the bore. The edge area. 29 of the flange 2 $ is bent upwards and rests on the inner surface of the seal 19, which seals the bore 1 5 in the end surface 10 of the aerosol container.

An opening 30 is spaced from the longitudinal axis of the tubular Shank 27 is provided in the upwardly bent part 31 of the flange. This opening 30 extends parallel to this axis, and although from the upwardly bent side of the flange to the other side facing the inside of the container.

In the substantially flat surface 33 of the flange 28 a channel 32 is formed by a shallow groove or groove in that surface. The channel 92 extends between the opening 30 and the cavity 26 of the tubular shaft 27, which ends in the surface 33. The channel 32 allows the aerosol flow from the jacket 21,

90 9 826/0234

Dipl. Ing. Heinz Lestor, patent attorney D - 8 MOndien 81, Cosimostrafce 81 ■ T «Mon: (0611) 48 38.20

which receives the flange 28 over at least part of the raised and upwardly curved edge 39 of the same through the opening 30 and the channel 32 through into the channel 26 de β tubular Shank 27, whenever the shank by pressing in known Way is shifted by finger pressure on the end of the shaft 27, which end protrudes beyond the container closure, for example via a spray head and a pressure part 34.

Providing the opening 30 at the specified location brings the This has the advantage that it can be produced with sufficiently great accuracy during compression molding or injection molding of the shaft 27. About that It is also possible to make the opening 30 so small that it can serve as an orifice.

A disk-shaped, second seal 35 made of rubber or another elastomeric material is provided in a cap 36. This seal encloses the surface 33 of the flange 28, thus securing the channel 32 with respect to the interior of the jacket 21 and the to seal the jacket receiving container. A spring provided within the jacket 21 and pretensioning the cap 36 has the effect of that the second seal 35 is held in permanent and elastic operative connection with the flange 28. In this way, aerosol flow is prevented between the channel 32 and the space

90 9 8 26/0234

Dipl.-lng. Η ίηζ Lauer, patent attorney D - 8 Munich 81. Cosimaitrafe 81 Telephone: (0811) 48 38 20

of the shell 21 takes place, which does not extend over the upwardly bent edge 29 of the flange 28 during the actuation of the valve. To improve the sealing effect of the seal 35, the flange surface 33 is provided along its circumference with a circular edge 37, which can be brought into contact with the seal 35 over its entire circumference due to the pressure exerted on the seal by the spring.

As shown in Fig. 1, the spring in a known manner, a coil spring 38, one end of which includes a centrally located on the cap 36 projection 39, while its opposite end on the lower part 41 of the casing 21 between its cylindrical bead 22 supporting wall on the one hand and the base 24 on the other. The projection 39 on the cap 36 holds the spring 38 in place and also facilitates the assembly of the lid.

The wall thickness of the tubular shaft 27 is preferably increased in the section 42 penetrating the seal 19 for reinforcement, while the wall thickness at the outermost end of the shaft is expediently reduced, as shown, in order to keep the size of the pressure part 34 containing the spray can within desired limits hold ^ Dejr. Inner diameter of the canal

Dip] -Ing. Heinz Lesser. Patent attorney D - 8 Mönchen 81, Cosid-ostraf} 81 - Telephone: (0811) 48 38 20

in the shaft 27, however, should be as large as possible in order to achieve a fast To allow filling of the aerosol container through the shaft 27, if this filling method is desirable.

A shoulder 43 is expediently provided on the shaft 27 between the section 42 of the shaft and the flange 28. These The shoulder forms a bearing surface for the seal 19 in the area of the bore 20 provided in the latter, the shoulder being a blockage the bore 20 in dem.Falle prevents the medium from swelling the seal caused.

From Fig. 2 it can be seen that the groove 32, which see a connection between the bore 30 and the inlet end of the channel 26 of the tubular Shank produces, is approximately tangential from the bore 30 to The outer surface of the channel 26 extends out and surrounds it, for example, in a spiral shape, as shown. Because of this arrangement the aerosol flowing into the shaft 27 from the groove 3 2 opens up directed by the shortest route, and on the aerosol upon entry into the Centrifugal forces exerted by channel 26 cause a vortex movement of the aerosol expelled from the container through the shaft 27,

The actuation of the valve does not differ from that in known ones Lids of the aforementioned type and therefore does not require any further

909826/0234

Dipl.-lno. Hein * Uuer, patent attorney D - 8 Mönchen 81, CoiinKntrcifc · 81 - telephone; (0611) 48 38 20

Explanation. Ee it goes without saying that the actuation of the valve either by tilting the shaft 27 or by Depressing the same against the bias of the coil spring 38 can be done.

The present invention is also suitable for lids such as those by the German patent application P 14 75 199.6 are disclosed, according to which the metal spring can be replaced by a central, elastically deformable projection, which is for example may extend upward from the bottom of the jacket.

What is described in the previous paragraph is shown in FIGS. 3 and 4 shown, which show a lid and a valve, which are located in distinguish the following details from the embodiment according to FIGS. 1 and 2:

Those made of acetal resin or other elastically deformable Plastic-made cap 136 carries and supports the second seal 35, which is also here with a central, for example approximately semicircular projection is provided. The center of this projection 139 is diametrically opposed, for example by a number extending slots 50 divided into a number of substantially triangular tabs 51, which a deformation of the front jump 139

909826/0234

Dipl.-Ing. Heinz LtMtr, patent attorney D - 8 Munich 81, Cosimastrafee 81 ■ Telephone: (0811) 48 36 20

by the pressure exerted in the direction of the seal 35. These slots 50 also ensure that the pressure inside the container acts on the seal 35 and the sealing effect between of the gasket 35 and the annular projection 37 of the flat surface of the upwardly bent flange 28 is improved.

A projection 52 is also provided above the tubular base 24 extending into the aerosol container. This projection 52 extends into the jacket 21 and is provided with a number of bores 53 which allow the penetration of the aerosol from the container _s into the base 24, from where it is bent into the jacket 21 and from there around the upward Edge 29 of the flange 28 exits through the bore 30, the groove 32 and the channel 26 of the tubular shaft 27 when the valve is operated in the manner described above by finger pressure.

From the arrangement shown in FIGS. 3 and 4 it can be seen that it takes up less space within the aerosol container than the arrangement according to FIGS. 1 and 2. Here, too, the shaft 27 can be formed in one piece with the flange 28, for example by compression molding from plastic. The jacket 21 can also be manufactured from a suitable plastic by one-piece compression molding ', the production of the bore 53 in the projection 52

909 8 26/0234

Dipl.-lng. Η · ίηζ Uisar. Batentanwalt D - 8 M «nch« n 81, Cosimostwfc · 81 · Telephone: (0611) 48 38 20

does not pose any difficulties. Likewise, the cap 136 with the slots 50 lightly made of plastic in the compression molding process produce.

FIG. 5 illustrates a modification of that shown in FIGS. 1 and 3 The channel 226 of the tubular, shaft 227 constricts enters at 60 at a desired distance from inlet 61. This constriction enables a second orifice to be formed 62 selectable diameter within the channel 226. In this embodiment, an additional expansion chamber 63 is between the inlet 61 and the orifice 62 are provided; this chamber 63 favors a more thorough atomization of the spray nozzle leaving aerosol.

It goes without saying that the inventive concept disclosed does not limited to the described and illustrated embodiments is, there are rather further modifications within the scope of the invention quite possible.

For example, those in the manufacture of the tubular shaft Materials to be used with a flange and other fittings are not limited to acetal resins and nylon, but extend to other synthetic resins or plastics;

9098 02/26 - $ *

Claims (1)

Dipl.-Ing. Heinz Lesser. Patent attorney O - 8 Munich 81, Cosimastrafje 81 ■ Telephone [OBU) 48 38 20 PATENT CLAIMS 1. Lid for an aerosol container with a valve which comprises a tubular shaft and a cup-shaped flange arranged at one end and integral with the shaft, a seal serving inside the lid for sealing the tubular shaft, inside the container arranged elastic means, which bring the edge of the cup-shaped flange to the seal inside the aerosol container and an opening that connects the cavity of the shaft with the space surrounded by the cup-shaped flange, the opening from the container through the tubular shaft controls escaping aerosol by choosing an arrangement such that the edge of the cup-shaped flange is at least partially detachable from the seal by tilting or sliding the shaft inside the aerosol container against the bias of the elastic means, characterized in that the opening (30 ) within the cup-shaped Fla nsches (28) is provided and extends parallel to the axis of the tubular shaft (27), the connection between the opening and the interior of the tubular shaft by a groove-like channel (32) in the 909026/02? Dipl.-Ing. Heinz Le «« r. Patents .wait D 8 MOndien SI, Cosimastraft 81 - Telephone: (ΟβΠ) 48 38 Shank facing away from the flange surface is formed, and that a second seal (3 5) on the one provided with this channel (32) The flange surface is placed and can be brought into contact with it in a sealing manner by the elastic means in order to prevent that the aerosol flowing out of the container when the Valves by tilting or moving the shaft opposite the container flows back into this. Lid according to claim 1, characterized in that the groove-like channel (32) connecting the opening (30) to the interior of the tubular shaft (27) is approximately tangential extends from this opening to the periphery of the inlet end of the shaft cavity (26) and surrounds it in such a way that the aerosol entering the cavity of the shaft is set in vortex motion. 3. Lid according to claim 1 or 2, characterized in that the tubular shaft (27) facing away and the groove-like channel (32) receiving surface dee, flange (28) in is substantially flat and is provided over its circumference with an edge which is in sealing contact with the second seal (35) by the internal pressure of the container and 909826/023 4 Dipl.-Ing. Heinz Lauer. Patent attorney D - 8 Munich 81, Cosimastra & e 81 - Telephone: (0611) 48 38 20 the bias of the elastic means is maintained. 4. Lid according to one of claims 1 to 3, characterized in that the opening (30) in the pot for mi gene flange (28) is dimensioned so that it serves as a metering opening during actuation of the valve. 5. Lid according to claim 4, characterized in that the cavity (226) of the tubular shaft (227) at a selectable distance from the tubular shaft with the opening (30) in the pot-shaped flange (28) connecting channel (32) is constricted, woduich a further metering opening (62) formed within the tubular shaft and an aerosol expansion chamber (63) between the two orifices (39, 62) will. 6. Lid according to one or more of claims 1 to 5, characterized in that the tubular shaft (27) is surrounded by a tendon (43) provided within the cup-shaped flange (28), which supports the seal (19) surrounding the shaft. 909826/0254 Dipl.-lng. Heinz Um er, patent attorney D - 8 Munich 81, Coiimastrajj 81 Telephone: (0811) 48 38 7. Lid according to one or more of claims 1 to 6, characterized in that the tubular shaft (27, 227) and the flange (28), which is integral therewith, is produced from plastic by compression molding. 8. Lid according to one or more of claims 1 to 6, characterized in that the tubular shaft (27, 227) and the flange (28), which is integral therewith, is produced by injection molding. 9. Lid according to one or more of claims 1 to 8, characterized in that -.He elastic means are formed as a helical spring (38), which in itself is supported in a known manner by a jacket (21) which is arranged inside the cover and which forms the pot-shaped Flange (28), the second seal (3 5) and the helical spring (38) receives, and that the second seal (3 5) in one Cap (36) is arranged, which is provided with a central projection (39) to fix the helical spring. 10. Lid according to one or more of claims 1 to 8, with a jacket arranged in this, thereby marked 309876/0234 _: Dipl.-Ing. Heinz Lesser, patent attorney D - 8 Mönchen 81, Cosimostrafce 81 - phone. (0811) 48 38 shows that the jacket (21) has a bottom part which is provided in a manner known in the art with an egg-shaped tubular base (24) for the supply of aerosol from the container into the jacket, the jacket having the pot-shaped flange (26), the second seal (35) and a cap (136) receiving this seal, on which cap a central projection (139) and a further projection (52) are provided within the shell over the base, of which projections (139, 52 ) -at least one is elastically compressible and can thereby be brought into contact with the other projection, in order thus to act together as elastic means. 11. Lid according to claim 10, characterized in that the central projection (139) on the cap (136) is provided with slots (50) in such a way that a number of tabs (51) arises, which facilitate the elastic deformation in the direction of the second seal (3 5). 12. Lid for an aerosol container as described and shown. 90 9 8 26/0234 Blank page