EP1708936A2 - Adapter for aerosol cans - Google Patents

Abstract

The invention relates to an adapter (1) for aerosol cans, particularly for discharging mounting foams. Said adapter (1) comprises a receiving device (2) for the valve of the aerosol can, a conduit (3) which is used for can content that is to be discharged and is located adjacent to the receiving device (2), a connection (4) on the conduit (3) for a trunk (16) in order to discharge the can content in a targeted manner, a handle (5) for actuating the receiving device (2) counter to the valve of the can, and holding means (6) for fixing the adapter (1) to a crimping lip of the dome (15) of the can. The receiving device (2) sealingly cooperates with the valve disk of the aerosol can while being flexibly integrated in the adapter (2). The inventive adapter (1) allows aerosol cans, especially for mounting foams, to be handled in a particularly comfortable fashion while ensuring good sealing properties above all in the area of the connection between the adapter (1), the valve, and the dome (15) of the can, said sealing properties being particularly important for handling purposes because the mounting foam hardens quickly when entering in contact with the environment, thus becoming useless.

Description

 Adapter for aerosol cans

The invention relates to an adapter for aerosol cans, in particular for the application of mounting foams, with a receptacle for the valve of the aerosol can, a delivery tube for auszubringenden can contents, which adjoins the recording, a connection to the conveyor pipe for a trunk for targeted application of the can contents, a handle for actuating the receptacle against the valve of the can and holding means for fixing the adapter on a Krimpwulst the Dosendoms.

Aerosol cans have found widespread use in many areas. In particular, aerosol cans are also used for mounting foams or polyurethane foams, which are barely indispensable as insulating and sealing material for windows and doors in the construction industry.

In such aerosol cans, a valve is provided at the upper end of the can, the so-called. Dosendom, from which emerges upon actuation of the can contents. From the valve, the contents of the can, via a connected pipe and, if necessary, a wider trunk, are brought to the destination where it is applied as a mounting foam. In conventional aerosol cans, the actuation of the valve is often quasi directly on the conveyor tube itself, which makes the operation relatively uncomfortable. In particular, usually the can with its delivery pipe must be brought close to the destination in order to then actuate the valve, which is often problematic due to the poor accessibility of the location-Be. In order to improve the handling of aerosol cans, adapters have been proposed in the prior art, which can be connected to a Dosendόm. Thus, the German patent DE 35 18 627 C3 discloses a device in which an adapter part is on the one hand connected to a spray gun and on the other hand, the aerosol can is screwed via a connecting device with the adapter part. Here, however, a separate adapter part is needed, which complicates the handling.

Other known from the prior art adapters have a thread for screwing on the aerosol can. However, the provision of a thread is generally associated with the disadvantage that on the one hand, the manufacture of such an adapter is relatively expensive and on the other hand, the adapter must be matched exactly to the aerosol can to ensure sufficient accuracy of fit. In addition, mounting foam often enters the intermediate areas of the thread and cures there, which endangers the tightness in view of the strong increase in volume of the mounting foam and causes the adapter is difficult to unscrew or can only be reused due to the heavy pollution after extensive cleaning ,

An adapter for aerosol cans with assembly foams is also described in DE 43 13319 A1. The aim of this invention is to provide a way to keep the contents of the can fresh as long as possible and thus usable by the provided for applying the mounting foam tube is formed to bend back on itself to form a crimp. The actuating device shown here has a downwardly directed nozzle, which has a frusto-conical interior, through which the can contents can escape. By actuating a handle provided on the adapter, the nozzle is bent in the direction of the valve so that a pressure is exerted on the star of the valve and the valve is opened. In order to operate the valve, the nozzle of the adapter is usually located obliquely on the bottle, wherein the nozzle is transferred by operating the handle in a more vertical shape over the can, wherein the valve opens by the force acting on the star. A disadvantage is noticeable in this prior art that caused by the operation of the handle force is not perpendicular from above the star but obliquely acts, so that the valve opens unevenly. In addition, the forces exerted to actuate the valve here also always act on the seal between the nozzle and the valve.

Based on this prior art, therefore, has the task of providing an adapter, with the help of the handling of aerosol cans, especially for mounting foams, even easier and more comfortable and in always a sufficient seal the connection of the can, valve and Adapter is guaranteed. A good seal is also desirable in that only in this way the longest possible durability of the can contents can be achieved.

This object is achieved by an adapter for aerosol cans, in particular for the application of mounting foams, with a receptacle for the valve of the aerosol can, a delivery tube for auszubringenden can contents, which adjoins the recording, a connection to the conveyor pipe for a trunk for targeted application the can contents, a handle for actuating the receptacle against the valve of the can and holding means for fixing the adapter on a Krimpwulst the can dome, wherein the receptacle sealingly cooperates with the valve plate of the aerosol can and the recording is flexibly integrated into the adapter.

Such an adapter can be easily plugged onto a can end of a conventional aerosol can. The valve located at the top of the aerosol can enters a receptacle provided for this purpose on the underside of the adapter. The cavity of the receptacle is followed by a delivery pipe, so that when the valve is actuated, the contents of the can pass over the receptacle into the delivery pipe. Finally, the conveyor tube can be connected to a trunk through which the can contents, in particular the assembly foam, can be brought to its destination, wherein the trunk is usually a movable plastic tube which has a certain flexibility. With a sufficiently long design of the trunk, the mon- Tageschaum thus be brought to otherwise difficult to access places.

The recording is inventively designed so that it is sealed with the recorded valve against the environment. In this way, it is ensured that in the region of the receptacle and the valve is no contact with the environment, so that curing of the mounting foam in this area, which would have the uselessness of the aerosol can result avoided. The flexible inclusion of the inclusion in the adapter causes that upon actuation of the receptacle against the valve of the can force acts on the valve only in the vertical direction, but not in the horizontal, so that no twists or tilting occur in the recording and the valve , which could endanger the tightness of the device. In addition, the flexible integration of the recording in the adapter causes a particularly easy and easy to dose actuation of the valve by means of the handle.

The holding means, by means of which the adapter is fixed to the can end, may have different configurations. In particular, it makes sense to form the retaining means as a snap closure, so that the adapter only has to be pressed against the Krimpwulst the Dosendoms, whereupon the bead passes into designated receptacles in the region of the holding means of the adapter and locks there, so that a permanent, secure down of the adapter is ensured on the box. In addition, such a snap closure is also faster and easier to handle than, for example, a screw cap.

In order to connect the adapter with the can so that a mutual displacement is no longer possible, the holding means should have at least two holding elements. These holding elements are preferably mounted on opposite sides of the adapter to fix the adapter to the can end. In addition, two oppositely mounted retaining elements also facilitate the fixation on the can end for the user, who can first snap the Krimpwulst on one side of the Dosendoms and then on the opposite side. Of course it is too possible to provide more than two holding elements on the holding means for further fixing.

The holding means may also be provided circumferentially in the designated area of the adapter, so that they form a retaining ring. Such a retaining ring in the manner of a snap closure has a depression along its entire circumference, into which the crimp bead of the aerosol can can engage. Such a retaining ring ensures a particularly secure connection of the box and adapter.

The receptacle for accommodating the valve located at the top of the aerosol can is expediently designed as a hollow cylinder, so that a seal along the entire circumference is ensured. At the Hohizylinder then joins the delivery pipe, so that when the valve is open, the can content from the Hohizylinder the recording can go into the delivery pipe.

In the Hohizylinder the upstanding part of the valve plate protrude, so that the receptacle cooperates with the valve disc to effect a sufficient seal. Such an interaction can be ensured in particular by providing the receptacle with a sealing element concentrically surrounding the valve disk. This sealing element has the effect that there is a direct connection between intake and delivery pipe only when the valve is open, so that otherwise the hollow cylinder with the part of the valve located therein does not come into contact with the environment and the atmospheric oxygen and the can contents can be used over a longer period of time remains. As a sealing element z. As a concentrically extending bead in the towering part of the valve disk or a surrounding the towering part of the valve disc sealing sleeve conceivable.

Another aspect of the invention is the flexible integration of the inclusion in the adapter. According to a preferred embodiment, the receptacle is flexibly connected to the conveyor tube, so that upon actuation of the handle, the approach of the conveyor tube undergoes a vertical displacement relative to the recording. Such a flexible connection of receiving and conveying tube causes the handle ultimately only one acting in the vertical direction Force is transmitted to the receptacle, which causes the opening of the valve, while the forces acting in the horizontal direction are absorbed by the flexible element between the receptacle and the delivery tube. Conveniently, for this purpose, the recording is connected via a membrane with the delivery pipe. Such a membrane allows a particularly easy operation of the valve, without a rotation or tilting of the same occurs.

The recording is usefully displaceable against the. Valve plate mounted, the displacement relative to the valve disc causes an opening of the valve. The displacement of the recording is caused by the operation of the handle. The receptacle is advantageously flexibly connected to the holding means, so that a displacement of the receptacle relative to the valve plate is possible, while at the same time the holding means are fixed on the Krimpwulst the Dosendoms. This connection can z. B. via flexible webs and / or at least one connecting element to the handle.

Between the handle and the holding means may be provided a spring element which ensures the automatic return of the handle after actuation. Such a spring element is also useful insofar as in this way too long or unintentional opening of the valve of the aerosol can is avoided, since for the actuation of the handle always by the spring element counteracting force must be overcome. An unintentional opening z. B. by pushing the handle against other objects during storage or transport, which would not only premature emptying of the can, but also a significant pollution of the environment with the mounting foam would result in this way is made largely improbable.

A further improvement in this regard is provided between a handle and holding means securing plate which can be introduced between the holding means and handle so that the handle can not be moved in the direction of the holding means without removing the locking plate. Since only by this movement, the valve of the aerosol can is opened, an accidental opening when using such a backup plate is practically impossible. According to a further advantageous embodiment, the adapter has an integrated sealing pin on which the trunk is attachable. Here, when not in use the aerosol can the end of the trunk, which is connected via the connection with the delivery pipe, opposite end plugged onto the sealing pin, so that the interior of the trunk is no longer exposed to the surrounding air. Accordingly, the substance to be discharged, which may still be in the trunk, stays fresh longer. In particular, an unwanted hardening of the mounting foam in the trunk is prevented, which would have the uselessness of the trunk result. In addition, serving as a trunk plastic pipe can be designed so that when plugging the trunk on the sealing pin kink arises in the trunk, which represents a crimp, which causes an additional seal. Sealing and connection of the delivery tube are usefully provided so in relative proximity in the same plane on the adapter that when attaching the trunk to terminal and sealing the trunk has a loop, O or V-shape. In particular, the sealing pin can be provided on the handle or on the holding means. An adapter in which a seal of the trunk via a crimp and possibly a sealing pin is done, is basically already known from DE 43 13 319 A1.

In order to connect the adapter to the aerosol can while it is in storage, especially when delivered, the adapter may have an additional securing means. With the help of such a securing means, in which it is z. B. may be a snap-in clip, the adapter is attached to a designated location on the aerosol can or its lid, that it is securely connected to the aerosol can during storage and transport on the one hand, but without problems on the other side can be removed. In this way it is largely ensured that the necessary for the operation of the aerosol can adapter is not lost.

Special importance of the adapter according to the invention for mounting foam aerosol cans, a use for other aerosol cans is by no means excluded. The invention will be further explained with reference to the accompanying figures. Show it:

Figure 1 shows an adapter according to the invention in cross section according to a first embodiment; Figure 2 shows the adapter of Figure 1 in a view obliquely from below;

Figure 3 shows an adapter according to the invention in cross section according to a second embodiment and Figure 4 shows the adapter of Figure 3 mounted on a can end.

In Figure 1, an inventive adapter, which is provided in its entirety by the reference numeral 1, shown in cross section. This adapter 1 is composed of a receptacle 2 for the valve of the aerosol can (not shown here), a subsequent to the receptacle 2 conveyor tube 3, a handle 5 for actuating the valve and holding means 6, the fixing of the adapter 1 on a Krimpwulst serve the Dosendoms. The connection of conveying tube 3 and receptacle 2 takes place via a membrane 7 located therebetween, which ensures the flexible integration of receptacle 2 into adapter 1. The conveyor pipe 3 is followed by a connection 4, on which a trunk can be attached (not shown here) through which the can contents are brought to its destination. For secure fixing of the trunk at the terminal 4, the latter has a corrugated surface.

The holding means 6 are here two separate holding elements, wherein a holding element has a receptacle for a Krimpwulst the Dosendoms, while the other holding element is designed so that it engages behind when pressed onto the Krimpwulst. In this way, a secure fixing of the adapter 1 is achieved on the aerosol can.

The handle 5 is connected via the connecting element 9 with the holding means 6 in connection. By operating the handle 5 and the conveyor pipe is the third displaced vertically relative to the receptacle 2, wherein the flexible membrane 7 is partially pressed and the valve is opened. ^" The connecting element 9 is flexible and moreover causes a restoring force on the handle 5, so that when the handle 5 is not actuated, the latter moves back into its starting position The receptacle 2 is connected via flexible webs 8 to the holding means 6, so that a certain mobility the receptacle 2 is ensured, while at the same time the holding means 6 set the adapter 1 to the aerosol can.

Finally, the adapter 1 has a securing means 10 in the form of a clamp, which can be pressed onto a designated location on the aerosol can to connect the adapter 1 in the delivery state with the can. In addition, such a securing means 10 ensures that can and adapter 1 when not in use in otherwise dismantled state constantly stay together and the adapter 1 is not lost.

In Figure 2, the adapter of Figure 1 is shown in a view obliquely from below, in which case in particular the receptacle 2, which has the shape of a hollow cylinder inside, can be seen.

FIG. 3 shows an alternative embodiment of the adapter 1 according to the invention, which essentially corresponds essentially to the adapter 1 shown in FIG. In contrast, the adapter 1 shown here, however, a retaining ring as a holding means 6, which has a circumferential groove which is aufdrückbar on the Krimpwulst the Dosendoms. In addition, this adapter 1 has a spring element 11 which ensures the automatic return of the handle 5 to the starting position after actuation. In order to avoid the unintentional actuation of the valve, the adapter 1 further comprises a locking plate 12 which is located between the handle 5 and holding means 6, so that when mounted locking plate 12 actuation of the handle 5 is impossible. In the present case, the backup plate 12 is connected via a plurality of plastic webs with holding means 6 and handle 5, ie the backup plate 12 must be broken out for the first time commissioning of the adapter 1 from the latter. Furthermore, the adapter 1 shown here has a clip 14 through which the ^" snout" can be inserted if necessary, in particular the clip 14 prevents uncontrolled pivoting of the snout, which is usually a plastic tube, while not in use The adapter 1 also has a sealing pin 13 onto which the end of the snout opposite the connection 4 can be plugged when not in use in order to close off the interior of the trunk.

In Figure 4, the adapter 1 is shown in the assembled state. About the holding means 6 while the adapter 1 is attached to a Dosendom 15. Furthermore, Figure 4 shows a proboscis 16 in the form of a flexible plastic tube, one end of which is plugged onto the conveyor tube and which is held in the further course by the clamp 14.

- Claims -

Claims

claims 1. An adapter for aerosol cans, in particular for the application of mounting foams, with a receptacle (2) for the valve of the aerosol can, a delivery pipe (3) for auszubringenden can contents, which is attached to the A receptacle (2) adjoins, a connection (4) on the conveyor tube (3) for a trunk (16) for targeted application of the can contents, a handle (5) for actuating the receptacle (2) against the valve of the can and holding means (6) for fixing the adapter (1) on a Krimpwulst the Dosendoms (15), characterized in that the receptacle (2) sealingly cooperates with the valve plate of the aerosol can and the receptacle (2) is flexibly integrated into the adapter (1). 2. Adapter according to claim 1, characterized in that the holding means (6) are designed as a snap closure. 3. Adapter according to claim 2, characterized in that the holding means (6) have at least two holding elements. 4. Adapter according to claim 2, characterized in that the Holding means (6) are designed as a retaining ring. 5. Adapter according to one of the preceding claims, characterized in that the receptacle (2) is formed hohizylindrisch. 6. An adapter according to claim 5, characterized gekennzeicrinet that the receptacle (2) cooperates with an upstanding part of the valve disk, which projects into the Hohizylinder. 7. An adapter according to claim 6, characterized gekennzeichinet that the receptacle (2) cooperates with a valve disc concentrically surrounding the sealing element. 8. An adapter according to claim 7, characterized in that the sealing element is a concentrically extending bead in the towering part of the valve disk. 9. Adapter according to claim 7, characterized in that the Sealing element is a surrounding the towering part of the valve disc sealing collar. 10. Adapter according to one of the preceding claims, characterized in that the receptacle (2) is flexibly connected to the conveyor tube C3), such that upon actuation of the handle (5) of the approach of the conveyor tube (3) has a vertical displacement relative to the receptacle (2) learns. 11. An adapter according to claim 10, characterized in that the receptacle (2) via a membrane (7) with the delivery pipe (3) is verbu NEN. 12. Adapter according to one of claims 1 to 9, characterized in that the receptacle (2) is displaceably mounted against the valve disk r. 13. An adapter according to claim 12, characterized gekennzeictinet that the receptacle (2) is flexibly connected to the holding means (6). 14. An adapter according to claim 13, characterized gekennzeictinet that the connection with the holding means (6) via flexible webs (8). 15. An adapter according to claim 13, characterized in that the connection with the holding means (6) via at least one connecting element (9) to the handle (5). 16. Adapter according to one of the preceding claims, characterized in that a spring element (11) between the handle (5) and holding means (6) is provided. 17. Adapter according to one of the preceding claims, characterized in that a securing plate (12) between the handle (5) and holding means (6) is provided. 18. Adapter according to one of the preceding claims, characterized in that it comprises an integrated sealing pin (13) for a trunk (16). 19. An adapter according to claim 18, characterized in that the sealing pin (13) on the handle (5) is provided. 20. Adapter according to claim 18, characterized in that the Sealing pin (13) on the retaining means (6) is provided. 21. Adapter according to one of the preceding claims, characterized by a securing means (10) for attachment to an aerosol can. - Summary -