Patent Application
20070290002
This invention relates to a device for dispensing, especially atomizing, a preferably cosmetic liquid according to the preamble of claim 1, and use of such a device.
The concept of “cosmetic liquid” includes in a narrow sense hair spray, hair lacquer, a deodorant, a foam, a gel, a coloring spray, a sunscreen, skin care agent, cleaning agent or the like. Preferably in a wider sense also other body care products, cleaning products, cosmetics, or the like, and also suspensions and fluids, especially with gaseous phases, are included. But other liquids, for example air fresheners, and especially also technical liquids and fluids, such as rust looseners or the like, can also be used. But for reasons of simplification and based on the focus of use often only cosmetic liquids are addressed below.
A device for atomizing of sunscreen is known from practice. The device is made as an atomizer pump and is screwed with a bottom part onto a container which contains the sunscreen. It has a dispensing head which can be depressed against spring force in the actuation direction. The sunscreen is dispensed upon depression and in doing so is sprayed in the nozzle of the dispensing head. The dispensing head can turn around an axis of rotation in the actuation direction. This allows the desired alignment of the spray direction of the dispensing head relative to the bottom part and this relative to the tank. This is advantageous for especially non-rotationally symmetrical containers and allows user-friendly alignment. As a result of the screw connection specifically a defined rotary position of the device and its bottom part to the container is not ensured. Rather, production tolerances lead to different relative rotary positions so that an individual alignment of the dispensing head and thus of the dispensing direction is desirable, But the problem is that the relatively small and often almost rotationally symmetrical, especially cylindrical dispensing head can twist in an undesirable manner so that when the device is being used often dispensing in an unwanted dispensing direction takes place if the user does not pay careful attention to the alignment of the dispensing head.
The object of this invention is to devise a device for dispensing, especially atomizing, of a preferably cosmetic liquid and use of such a device with improved manageability.
This object is achieved by a device as claimed in claim 1 or a use as claimed in claim 29. Advantageous developments are the subject matter of the dependent claims.
The basic idea of this invention is to provide a catch means so that the dispensing head can be turned relative to the bottom part especially exclusively by catching. This greatly facilitates handling of the device as claimed in the invention since the dispensing head no longer turns unwanted, but remains by the catch means in the desired rotary position relative to the bottom part and thus relative to the container which is assigned to the device and which contains the liquid to be dispensed. Unintentional turning of the dispensing head can thus essentially be completely eliminated.
Preferably the required force for turning the dispensing head against the force of the catch means from one catch to the next catch is selected such that on the one hand user-friendly ease of movement and on the other stiffness sufficient to prevent unwanted twisting are achieved.
Especially preferably the catch means is formed by the interaction of the dispensing head with the bottom part. Preferably for this purpose catch cams are located or molded on the dispensing head and catch recesses on the bottom part or vice versa, which radially engage one another and thus form the catch means with other catch steps in the direction of rotation, and which can move axially relative to one another, therefore in the actuation direction of the dispensing head, and thus ensure that the catching action is preserved even when the dispensing head is actuated. Thus the desired catch function is enabled in a very simple and economical manner, especially without additional parts.
The device as claimed in the invention with the catch function as claimed in the invention can be used in a versatile manner. For example the device can be made especially as an atomizer pump. But the device can also be made as a metering dispenser or as a dispensing valve with a spray head for a spray or the like.
The device for dispensing and if necessary atomizing a cosmetic liquid is used especially preferably in the initially indicated sense.
Other advantages, features, properties and aspects of this invention will become apparent from the following description of one preferred embodiment using the drawings.
The same reference numbers are used for the same or similar parts in the figures, the corresponding or comparable properties and advantages being achieved even if a repeated description is omitted.
The device 1 has a bottom part 3 and a dispensing head 4, which can be manually turned relative to the bottom part 3 in order to be able to set the dispensing direction 5 indicated in
The axis of rotation of the dispensing head 4 runs preferably at least essentially in the actuation direction 6. If necessary the axis of rotation however can also be tilted thereto or even run transversely thereto.
The dispensing direction 5 runs preferably crosswise, especially at least essentially perpendicular to the actuation direction 6.
The device 1 is or can be connected preferably torsionally strong to a container 7 which contains or holds the liquid 2. To do this in the illustrated example the bottom part 3 has a threaded section 8 which is screwed onto the neck 9 of the container 7 as shown in
Based on production tolerances, the specific rotary position of the bottom part 3 relative to the container 7 however cannot be predicted or can be predicted only very inaccurately in the screwed-on, tightened state. Accordingly the above explained rotation capacity of the dispensing head 4 is desirable or even necessary for adjustment of the dispensing direction 5 especially for a non-rotationally symmetrical execution of the assigned container 7, in order to enable ergonomically efficient handling.
The device 1 and its bottom part 3 however can also be connected alternately detachably or nondetachably in some other way to the container 7.
The bottom part 3 in the illustrated example is preferably made in one piece. But if necessary it can also be made in several parts.
In particular, depending on the execution of the container 7 the bottom part 3 is made preferably at least essentially rotationally symmetrical, or in contrast thereto is adapted to an especially non-rotationally symmetrical shape of the container 7.
The bottom part 3 in the illustrated example forms a preferably annular section 10 which the dispensing head 4 engages especially with a preferably hollow cylindrical guide section 11. If necessary the section 10 can be used to guide the dispensing head 4, especially when it moves in the actuation direction 6.
As claimed in the invention the device 1 has a catch means so that the dispensing head 4 can be turned preferably exclusively with catching relative to the bottom part 3. In the illustrated example the catch means acts directly between the bottom part 3 and the dispensing head 4 and is formed especially by the bottom part 3 and/or the dispensing head 4. Especially preferably the catch means is located on the preferably annular section 10 and guide section 11 and is formed by them.
The catch means in the illustrated example comprises at least one catch cam 12, preferably several catch cams 12 which are spaced in the direction of rotation or peripheral direction, as can be taken from the perspective view of the dispensing head 4 as shown in
The catch cams 12 are made relative short in the axial direction, therefore in the actuating direction 6. But the catch cams 12 can also extend longer, especially in the manner of a crosspiece, in the actuating direction 6 of the dispensing head 4.
The catch means in the illustrated example furthermore comprises at least one catch recess 13, preferably several catch recesses 13 distributed or spaced in the direction of rotation, on the bottom part 3, especially on the inside of the annular section 10 of the bottom part 3. In the illustrated example the catch recesses 13 are preferably made groove-like in the axial direction or actuating direction 6. The catch recesses 13 or projections or crosspieces 14 located in between form more or less peripheral teeth.
The catch cams 12 and catch recesses 13 are matched to one another or are made complementary to one another such that the catch projections 12 can engage one another with catching, especially radially to the actuating direction 6 of the dispensing head 4, the dispensing head 4 being pivotable to the bottom part 3 as it catches.
The extract as shown in
Therefore in the locked state positive locking is formed by the catch means and the engaging catch cams 12 and prevents turning of the dispensing head 4 relative to the bottom part 3. This positive locking can however be overcome by the correspondingly strong turning of the dispensing head 4.
In order to achieve the desired catch behavior, therefore sufficient tightness, to prevent unwanted twisting of the dispensing head 4 bit also to enable sufficient ease of rotation of the dispensing head 4 for the user, the catch means is made accordingly. In particular the profiles of the catch cams 12 and the catch recesses 13 or crosspieces 14 are matched to one another in a suitable manner, in the illustrated example the catch cams 12 and the crosspieces or projections 14 which rise between the catch recesses 13 are rounded or made largely uniformly arched. Furthermore especially the number of catch elements engaging at the same time in the catch position, in the illustrated example fixed by the number of catch cams 12, is selected accordingly; preferably there are at least two and at most six simultaneous engagement sites, in the illustrated example four engagement sites based on the four catch cams 12. Moreover, to achieve the desired catch properties the catch cams 12 and/or the crosspieces 14 between the catch recesses 13 can each be radially deformed elastically and/or located on a radially elastically resilient section 10 and 11. This can be achieved by the corresponding material selection and dimensioning.
Instead of the catch recesses 13, of course also the projections or crosspieces 14 can be regarded as opposing elements for the catch cams 12 to achieve the desired catch function.
Furthermore more kinematic reversal or functional reversal is of course possible. For example, the catch cams 12 can also be formed on the bottom part 3 and the catch recesses 13 on the dispensing head 4. Furthermore the catch means can also be located or formed between the outer surface of the bottom part 3 and the inner surface of the dispensing head 4.
Moreover the catch means can also act for example only indirectly between the bottom part 3 and the dispensing head 4, for example by interposition of at least one additional component.
The catch means is made preferably such that at least largely play-free locking is attained.
The catch means is preferably made such that the dispensing head 4 after release always assumes a locked rotary position, the catch means therefore especially due to the shape and elasticity of the participating components locking in automatically.
The catch means, especially its catch cams 12 and catch recesses 13, is or are arranged or made in the illustrated example such that the catch function acts over the entire actuating distance of the dispensing head 4, therefore in each depressed position of the dispensing head 4.
The device 1, especially the catch means, is necessarily made such that the dispensing head 4 can be turned only in the non-depressed state. This can be achieved for example in that the engagement depth of the catch cams 12 between the crosspieces and projections 14 in the depressed state is enlarged such that further locking into the next catch position is no longer possible.
The catch means is made such that the dispensing head 4 can be turned in several catch steps, preferably of less than 20°, especially less than 15°, preferably roughly 8° to 12°, relative to the bottom part 3. These catch steps are established in the illustrated example by the distances of the catch recesses 13.
If necessary, the dispensing head 4 can be turned only to a limited degree, therefore only twisted in a limited angular range. This is an especially good idea when the dispensing head 4 can be turned into a blocked position in which the dispensing head 4 is blocked against actuation or depression. This blocked position is then reached especially on one end of the rotary angle region or if necessary also on the two ends of the rotary angle region.
In order to achieve a compact construction, the dispensing head 4 is made preferably at least essentially cylindrical and/or rotationally symmetrical.
The device 1 preferably has an outlet valve 15 which can be opened by pressing down the dispensing head 4 and/or by a pump 16 which can be actuated by pressing it down for the liquid 2. In particular the device 1 is made as an atomizer pump. But the device 1, as already mentioned above, can also be a so-called metering dispenser or an aerosol valve, for example for a pressurized container or the like.
The device in the illustrated example has a reset means in the form of a spring 17, against the force of which the dispensing head 4 can be actuated.
In the illustrated example the device 1 has a connecting piece 18 onto which the dispensing head 4 is slipped axially, therefore in the actuation direction 6, during mounting. In this mounting the catch cams 12 and catch recesses 13 or crosspieces 14 are pushed axially into one another and automatically engaged. In order to ensure ease of assembly, there are preferably the corresponding insertion bevels or roundings on the front sides of the catch cams 12 and/or crosspieces 14 facing the bottom part 3 or dispensing head 4.
According to one version which is not shown, with the corresponding limitation of the catch recesses 13 on the free axial end of the section 10, the catch cams 12 and catch recesses 13 can also extend behind one another such that an axial stop for the mounted dispensing head 4 is formed so that the dispensing head 4 is locked against unwanted loosening from the bottom part 3. The corresponding insertion bevel or rounding of the catch cam 12 enables assembly, release of the dispensing head 4 conversely is necessarily excluded.
The operation of the device 1 which is made as an atomizer pump in the illustrated example, is briefly described below.
When the dispensing head 4 is actuated or pressed down in the actuating direction 6 against the force of the spring 17, the liquid 2 in the pump 16 is compressed and dispensed via the connecting piece 18 and corresponding channels in the dispensing head 4 and preferably a nozzle 19 in the dispensing direction 5 and in doing so is preferably atomized. The dispensing head 4 is then reset into its initial position automatically by the force of the spring 17, in doing so liquid 2 being intaken into the pump 16 via a line or a tube 20. To enable the pump to work, an inlet valve which is not shown and for example the already named outlet valve 15 interact in a suitable manner.
As already explained, the device 1 as claimed in the invention can be used especially for cosmetic liquids 2 in the initially named sense, but also for other liquids.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2004 046 768.4 | Sep 2004 | DE | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP05/10272 | 9/22/2005 | WO | 3/26/2007 |
