EP2869934A2 - Dispensing head and dispensing device - Google Patents

Abstract

The invention relates to a dispensing device, and to a dispensing head and the use thereof. By pressing down on the dispensing head, an associated dispensing valve is opened, and the product to be dispensed can flow out and/or can be discharged by way of a discharge chamber and a downstream dispensing valve. In order to avoid, or at least minimize, post dripping or foaming, the volume of the discharge chamber is initially reduced when the dispensing head is actuated, and once the actuation is finished, particularly after the dispensing valve is closed, is enlarged again so that the product is suctioned from the outlet, that is, the dispensing valve, back into the discharge chamber.

Description

 Dispensing head and dispenser

The present invention relates to a dispensing head for a preferably cosmetic product according to the preamble of claim 1, a dispensing device with such dispensing head according to the preamble of claim 14 and a use of a dispensing head according to the preamble of claim 15.

The term "dispensing device" is to be understood in the present invention, in particular a dispensing head, which is preferably attached to a container or its dispensing valve or to a hand-operated pump or attachable. In particular, it may also be a pressure vessel, a dispenser pump or the like. The dispenser preferably serves for the non-spraying dispensing or dispensing of a preferably cosmetic product. However, it can also be a metering pump or hand-operated pump or any other dispensing device, such as a container, spray head, dispenser or the like, in particular for a cosmetic product.

There are proposed a dispensing device and a dispensing head, in particular for a cosmetic products. By depressing the dispensing head, an associated dispensing valve is opened and the dispensed product can exit through an outlet space and through a downstream outlet valve. In order to prevent or at least minimize dripping or re-foaming, the volume of the outlet space is initially reduced upon actuation of the dispensing head and increased again after the actuation has ended, in particular after the dispensing valve has been closed, so that the product returns from the outlet or outlet valve is sucked back into the outlet space.

The term "product" is to be understood in particular also liquids, suspensions and fluids, possibly with gas phases. The product may be dispensed as a paste, jet or mist or otherwise, especially as a foam or gel.

Preferably, the dispenser is used for a cosmetic product. The term "cosmetic product" in a narrower sense cosmetics, hair spray, hair lacquer, deodorant, shaving cream, paint spray, sunscreen or skin care products, generally means for beauty care, o. The like. To understand. preferential

CONFIRMATION COPY wise, however, other body or hair care products are included in a broader sense.

For example, the product may also be detergents or lubricants or other household agents, for example air fresheners, and in particular also other technical products, such as rust remover or the like. However, for simplification reasons and because of the focus of use, the following is often only spoken of cosmetic product. In today's dispensers for delivery of particular foaming or foamed products, such as shaving cream, or donor pumps, there is often the problem that the products after the actual delivery exiting later, in particular re-foaming or dribbling. This problem is particularly blatant with shaving foam or the like, but also occurs in non-foamed or non-intumescent products and can in particular lead to undesirable contamination of the dispensing devices.

WO 2007/104561 A2 discloses a dispensing device. According to an embodiment variant, the dispenser has a dispensing head with an outlet space and a downstream outlet valve for preventing a subsequent escape of products. By depressing the dispensing head, the latter can open an associated dispensing valve of the dispensing device via a connection section, so that the product can be dispensed from the dispensing valve via the outlet chamber and the outlet valve.

The present invention has for its object to provide an improved dispensing head and an improved dispensing device and a use, so that a Nachschäumen or dripping of product after completion of an operation of the dispensing head or the dispensing device can be avoided or (further) minimized.

The above object is achieved by a dispensing head according to claim 1, a dispensing device according to claim 14 or a use according to claim 15. Advantageous developments are the subject of the dependent claims.

One aspect of the present invention is that the volume of the outlet space is reduced and / or when the dispensing head or dispensing valve is actuated upon actuation of the dispensing head or dispensing valve, to retain and / or suck in the outlet space after actuation or closing of the dispensing valve, or to create a certain negative pressure in the outlet space. Thus, the dripping or re-foaming of product out of the outlet or outlet space to the outside, in particular via the outlet element, can be avoided or at least minimized.

The dispensing head preferably has an outlet element which is assigned to the outlet space on the outlet side. The outlet element is in particular a preferably automatically closing outlet valve. Particularly preferably, this outlet valve opens automatically in the presence of a certain product pressure in the outlet space and / or preferably closes automatically when it falls below this or another pressure. Alternatively or additionally, the dispensing device or the dispensing head may also have a nozzle or opening as an outlet. If necessary, the outlet valve can also form a nozzle.

For enlargement and reduction - hereinafter also referred to as variation - of the volume of the outlet space, according to one aspect, preferably a particularly elastic deformation of a wall of the outlet space is provided. This allows a very simple implementation. For example, the wall is pressed upon actuation of the dispensing head and here reduced by the volume of the outlet space. After completion of the operation, the wall, in particular due to elastic recovery, preferably as automatically, assume the original shape again, thereby increasing the outlet again.

Alternatively or additionally, according to another aspect, a variation of the volume of the outlet space can also be realized by relative movement of parts or sections of the outlet space. For example, for this purpose, the connection section can in particular be coupled in an axially movable manner to the connection space and be resiliently prestressed to the dispensing valve and / or into a position enlarging the outlet space. This also allows easy production and / or safe operation.

The preferred increase in the volume of the outlet space after closing the dispensing valve may result in that which is downstream of the outlet space Exhaust valve closes faster because the pressure in the outlet space decreases faster than at constant volume of the outlet space.

Alternatively or additionally, product located in the outlet space after closing the dispensing valve can still be re-foamed, and this resulting volume can be absorbed by the enlarged volume of the outlet space.

Further advantages, features, characteristics and aspects of the present invention will become apparent from the claims and the following description of preferred embodiments with reference to the drawing. It shows:

1 shows a schematic section of a proposed dispensing device with a container and with a proposed dispensing head according to a first embodiment in the unactuated state.

Fig. 2 is a schematic section of the dispensing head in partially actuated

 Status;

Fig. 3 is a perspective, exploded view of the dispensing head;

4 shows a schematic section of a proposed dispensing head according to a second embodiment in the unactuated state;

Fig. 5 is a schematic section of the dispensing head according to the second

 Embodiment in the actuated state;

Fig. 6 is a perspective exploded view of the dispensing head according to the second embodiment;

FIG. 7 is a perspective view of a terminal portion of the dispensing head according to the second embodiment; FIG.

8 is a schematic, enlarged partial section of a dispensing head in FIG

 Area of an outlet according to a third embodiment;

9 is a schematic, enlarged partial section of a dispensing head in FIG

Area of an outlet according to a fourth embodiment; 10 shows a schematic, enlarged partial section of a dispensing head in the region of an outlet according to a fifth embodiment;

Fig. 1 1 is a schematic, enlarged partial section of a dispensing head in

 Area of an outlet according to a sixth embodiment;

Fig. 12 is a schematic section of a proposed dispensing head according to a seventh embodiment;

FIG. 13 is a perspective view of a terminal portion of the dispensing head according to the seventh embodiment; FIG.

Fig. 14 is a schematic section of a proposed dispensing head according to an eighth embodiment; and

Fig. 15 is a perspective view of a terminal portion of the dispensing head according to the eighth embodiment.

In the partly not to scale, only schematic figures, the same reference numerals are used for the same or similar parts, with corresponding or comparable properties and advantages are achieved, even if a repeated description is omitted.

1 shows in a schematic section a proposed dispensing device 1, which preferably has a proposed dispensing head 6 for dispensing a product 2 in the sense mentioned at the outset, for example a lotion.

The product 2 may be more viscous than water or possibly even pasty.

In particular, the product 2 may also form a foam or gel.

The product 2 may also contain gas in liquid and / or other form.

In particular, the dispenser 1 is designed for non-spraying delivery of the product 2. However, a sparkling output is also possible. In particular, an output of the product 2 takes place as a foam, preferably as a shaving foam or the like. For this purpose, the liquid 2 is in particular designed to be self-foaming and / or is foamed during dispensing. However, the product 2 can basically also be dispensed in the non-foamed state and, in particular, also be non-frothing. Furthermore, it is also possible that the product 2 foams only very slightly, so that the foaming, for example, only slightly increases the volume, but substantially maintains a liquid or pasty consistency in dispensing.

It should be noted that in place of the exemplified delivery as foam in principle, any other delivery of the product 2 - possibly also as a pasty mass, as a gel, as a drop, as a jet or as a spray - in question.

The dispensing device 1 is preferably provided or connected to a reservoir, in particular a container 3, for the liquid 2 to be dispensed. The reservoir can thus form part of the dispensing device 1 or can be connected or connectable to it.

In the illustrated example, the reservoir is designed as a preferably rigid container 3, in particular as a pressure vessel. The container 3 is in particular elongate and / or cylindrical and / or rigid - particularly preferably designed as a metallic can - for the liquid 2.

The liquid 2 in the reservoir is preferably either pressurizable or under pressure. In particular, the container 3 or the liquid 2 contains a suitable propellant, preferably a volatile and / or flammable propellant, compressed gas and / or carbon dioxide. However, the dispensing device 1 can also form a pump or the like, which sucks the liquid 2, in particular, out of the container 3.

The dispensing device 1 or the container 3 preferably has-particularly preferably at the front-an only schematically indicated dispensing valve 4, to which the dispensing head 6 is connected or connectable. If necessary, the dispensing valve 4 may also be a metering valve or another valve device. In the illustrated example, the dispensing device 1 preferably has a housing part 5, which is connected to the reservoir or container 3 or connectable, particularly preferably by clamping and / or latching it can be placed. Preferably, the housing part 5 is connected to the dispensing head 6 or formed by this.

The dispensing head 6 or a head section 7 of the dispensing head 6 can be pressed down or tilted downwards, particularly preferably by a corresponding - in particular elastically deformable - connection to or held by the housing part 5. However, other constructive solutions are possible.

In the exemplary embodiment, the head section 7 preferably extends at least substantially horizontally and / or starting from an outlet 10 or an edge of the housing part 5 or dispensing head 6 toward the center, in particular via the dispensing valve 4.

The dispensing head 6 or head section 7 preferably has a connection section 8, which extends to the dispensing valve 4 and in particular serves to actuate the dispensing valve 4 and / or a fluidic connection of the dispensing head 6 to the valve 4. By operating or depressing or pivoting the dispensing head 6 or head section 7, the connecting section 8 is particularly preferably movable or depressible in order to actuate or open the associated or connected dispensing valve 4. Fig. 1 shows the unactuated state.

The dispensing device or the dispensing head 6 has an outlet chamber 9 and preferably a downstream outlet element 10A. The outlet space 9 serves to receive product 2, which is dispensed upon actuation of the dispensing valve 4. Further, the outlet space 9 serves in particular a line of the received product to the outlet 10 and the outlet element 10A. In the illustrated embodiment, the outlet chamber 9 preferably has a delivery channel 9A, which is formed in particular in the connection section 8, and for example at least substantially vertically in the representation of FIG. 1 extends, and / or a connection channel 9B, in particular transversely thereto and / or Head portion 7 and at least substantially horizontally in the representation of FIG. 1 runs on. In particular, the connection channel 9B connects the delivery channel 9A with the outlet 10 and the optional outlet element 10A, respectively. In the illustrated embodiment, the housing part 5 and the dispensing head 6 are preferably integrally formed with each other, in particular wherein the housing part 5 the dispensing head 6 tilted or depressible holds, for example via a film hinge or other particularly elastically deformable connecting portion.

The housing part 5 or the dispensing head 6 is preferably injection-molded or made of plastic.

The dispensing head 6 preferably has, as the outlet-side outlet element 10A, a valve, which in particular forms an outlet valve, so that most often referred to below as the outlet valve.

The outlet element 10A or outlet valve preferably closes the outlet 10 or connection channel 9B on the outlet side. It should be noted that the outlet valve can also close off the delivery channel 9A on the outlet side. In this case, the connecting channel 9B may therefore be dispensed with or formed by the delivery channel 9A.

The outlet valve preferably forms an assembly, which is installed in particular prefabricated. In the illustrated example, the outlet valve is held or received by a recess or receptacle in the head section 7. Preferably, the exhaust valve is latching or clamping of the recording receivable or halterbar. In particular, the outlet valve can be inserted at least partially into the receptacle. Alternatively or additionally, the outlet valve can also be attached to the dispensing head 6 or head section 7 or outlet 10 by gluing, welding or in any other suitable manner.

Particularly preferably, no nozzle, no further channel or the like adjoins the outlet element 10A or outlet valve or its valve element. Instead, the outlet element 10A or outlet valve opens "into the open". Thus, after exiting the outlet element 10A or outlet valve, the product 2 can preferably be directly taken up or used by a user (not shown). It is also possible for the outlet element 10A or outlet valve to form or be integrated into a nozzle. Alternatively, for example, only one nozzle may be provided as the outlet element 10A instead of the outlet valve.

Particularly preferably, the outlet valve is designed as described in WO 2008/028619 A1 or in WO 2010/149264 A1. However, other constructive solutions are possible. The outlet valve is preferably designed such that it opens as a function of the pending product pressure, in particular when a predetermined minimum pressure is exceeded. When the dispensing valve 4 is open, the dispensing pressure and thus the pending product pressure is higher than the minimum pressure, so that the outlet valve also opens for the desired product dispensing and production or dispensing of foam.

The dispensing head 6, head section 7 or outlet chamber 9, here in particular the connecting channel 9B, preferably has a flexible or deformable wall 11. In the illustrated embodiment, the wall 1 1 is formed relatively thin and / or arranged in a flat side or top of the dispensing head 6 and head portion 7 or forms them at least partially.

In the illustrated embodiment, the dispensing head 6 preferably has an actuating element 12 which, in particular, can be pressed, deformed or pivoted to actuate the dispensing device 1 or the dispensing head 6. In the illustrated example, the actuating element 12 is preferably held or mounted pivotably on the dispensing head 6 or its head portion 7. However, other constructive solutions are possible. Fig. 1 shows the dispensing device 1 and the dispensing head 6 in the non-actuated state. In particular, the actuating element 12 is not depressed. Accordingly, in particular, the discharge valve 4 is closed in this state.

For actuation of the dispensing device 1, the actuating element 12, in particular in a rear (the outlet 10 is in front) actuating region 12A is manually depressed or pushed down by a user, not shown, in the illustrated embodiment. By depressing the actuating element 12 is pivoted and preferably first on the wall 1 1, to deform them or press into the outlet chamber 9 or connecting channel 9B. For this purpose, the actuating element 12 preferably has a projection 2B assigned to the wall 11 in the illustrated example.

The actuation or depression of the dispensing head 6, head section 7 or actuating element 12 preferably takes place in an actuating direction B, as indicated in FIGS. 1 and 2 by an arrow.

In the illustrated embodiment, the dispensing head 6 or head section 7 is preferably tiltable about an axis extending substantially perpendicular to the plane of the drawing of FIGS. 1 and 2, in particular under elastic deformation of a connecting region 5A.

Fig. 2 shows an intermediate state or only the dispensing head 6 at initial or partial actuation. The actuator 12 is already depressed or pivoted down. The wall 11 is already deformed or pressed. As a result, the (initial or normal) volume of the outlet space 9 or connection channel 9B has been reduced.

The dispensing head 6 or head section 7 or the actuating element 12 is preferably further depressible. As a result of the further depression or tilting, the dispensing valve 4 is then opened, in particular by the connecting section 8 acting correspondingly on the dispensing valve 4. Particularly preferably, the connection portion 8 with the dispensing valve 4 and a valve or connection element 13 of the dispensing valve 4 in particular by plugging - mechanically and / or fluidly connected. The connecting element 13 is preferably formed in the illustrated example as a connecting piece. In particular, this embodiment or this illustration example is a male dispensing valve 4.

When the dispensing valve 4 is open, the product 2, which is preferably pressurized in the reservoir or container 3, can then flow, in particular via a riser 14 (see FIG. 1) and the opened dispensing valve 4, into the outlet space 9 or conveying channel 9A. For example, at least a first foaming of the product takes place in the outlet space 9 or conveying channel 9A. Optionally, this may also be the case a foaming device, not shown (additionally or alternatively) may be provided. For example, the product 2 or the foam can be guided through a grid, not shown, and / or foamed by supplying gas or air (additionally or alternatively).

The pressurized product 2 can flow to the outlet 10 or, if present, the outlet valve or element 10A via the delivery channel 9A and the connection channel 9B. The then acting on the exhaust valve pressure causes an opening of the exhaust valve, so that the desired output of the product 2 takes place.

After actuation or after releasing the actuating element 12 or dispensing head 6 is preferably due to corresponding restoring forces, possibly also by an additional return means, such as a spring means 15, a provision in the starting position or unactuated position. The head section 7 with the connec- tion section 8 thus moves back into the non-depressed starting position, ie upwards again against the direction of actuation B. Next preferably also takes a provision of the actuating element 12 in its non-depressed position, ie back up. Preferably, the dispensing head 6 or head portion 7 has a corresponding spring means 15, for example a resilient web or the like, which biases the actuating member 12 in its non-depressed starting position and moved back again after releasing. This spring section can be formed or formed, for example, on the head section 7 or actuating element 12, as indicated in FIGS. 1 and 2. However, the spring means 15 may also be a separate part, such as a spring. Alternatively or additionally, the spring means 15 may be formed or supported by the wall 1 1, in particular when the wall 1 1 is formed such that it automatically returns by elastic recovery their initial position, in particular a non-depressed state assumes. As a result of this provision, the actuating element 12 can be raised again at the same time after it has been released.

The product delivery or foam generation ends, in particular, when the pressure or discharge pressure prevailing in the outlet chamber 9 drops below the minimum pressure, so that the outlet valve 10 closes again, in particular by elastic return. This is the case when the dispensing valve 4 - in particular by releasing or automatic reset of the dispensing head 6 or head section 7 - closes again and the pressure in the outlet chamber 9 drops below the minimum pressure. The closed or closing exhaust valve prevents then that even in the product 2, such as foam o. The like., In an undesirable manner later emerge or can foam out.

In addition or as an alternative to the outlet valve, the dispensing device 1 or the dispensing head 6, as proposed, has a (further) measure or device for avoiding or at least minimizing the subsequent escape of product 2 from the outlet 10 or outlet element 10A. According to this measure, the volume of the outlet space 9 is (re) enlarged after completion of the actuation of the dispensing head 6 or after the closing of the dispensing valve 4 in order to retain or suck product 2 in the outlet space 9 located in the outlet space 9. By virtue of the proposed increase in volume, it is also possible to temporarily form a negative pressure in the outlet space 9. Possibly. As a result of the increase in volume, product 2 from the outlet element 10 or a nozzle or the outlet valve can also be sucked back into the outlet space 9. As a result, sticking or soiling of the outlet element 10 or the outlet A of the dispensing head 6 can be counteracted or prevented.

According to the measure according to the proposal, the volume of the outlet space 9 is increased (again) on termination of the actuation or after actuation. This is done in the first embodiment by appropriate provision or return movement of the pressed-in during the operation wall 1 1 in its initial position, ie in a particular less depressed or no longer depressed position.

In order to ensure this, the dispensing head 6 or the dispensing device 1 is preferably designed such that the restoring force of the head section 7 or connecting portion 8 and / or the closing force of the dispensing valve 4 (substantially) greater than the restoring force of the wall 1 1 and / or the spring means 15 is. Alternatively or additionally, the wall 11 may also be designed in such a way that it returns (substantially) more slowly than the connection section 8.

The desired moving back of the connecting portion 8 and closing the discharge valve 4 before increasing the volume of the outlet chamber 9 or resetting the wall 1 1 is preferably by the closing force of the exhaust gas beventils 4 supported or achieved. In particular, the valve or connection element 13 is namely biased by spring force into a closed position, in the illustration of FIG. 1 upwards. The wall 1 1 is preferably formed so thin that the desired deformability is achieved. In particular, the wall 11 may have a reduced wall thickness in a desired deformation region, for example a circular region, and / or be recessed or, for example, recessed on the outside.

In order to allow a good deformability of the wall 1 1 and / or to allow the largest possible change volume (difference between enlarged or initial and reduced volume of the outlet 9), the outlet 9 and connecting channel 9 B in the representation example in the region of the deformable wall. 1 1 preferably in cross-section (transverse to the flow direction) is very flat and / or wide. This is indicated schematically in Fig. 3, which shows the dispensing head 6 in a perspective, exploded view. In particular, Fig. 3 shows the preferred relatively large-scale design of the deformable wall 1, which is characterized by an upper-side recess of the dispensing head 6 and head portion 7 to reduce the wall thickness and thus increase the deformability. The associated outlet chamber 9 or connecting channel 9B is preferably correspondingly broad, as can be seen from the opening cross-section in the region of the outlet A when the outlet element 10 is removed.

Fig. 3 also illustrates that the (lower) housing part 5 and the dispensing head 6 and head section 7 preferably integrally formed and here via a preferably relatively thin-walled and / or film hinge-like connection region 5A over a limited peripheral region, in particular below the outlet 10 or Outlet member 10A, are interconnected. The connecting region 5A preferably connects the preferably ring-like housing part 5 with a preferably at least substantially cylindrical jacket region 7A of the dispensing head 6 or head section 7. The jacket region 7A preferably surrounds the centrally arranged connecting section 8. However, other constructive solutions are also possible. The actuator 12 is, as already mentioned, preferably pivotally or tiltably held on the dispensing head 6 and head portion 7 or stored. The pivot axis S is preferably arranged in the vicinity of the outlet 10 or outlet element 10A, in particular between the outlet A or outlet element 10 on the one hand, and the deformable wall 11 on the other hand. On the other hand, the actuating region 12A is further spaced from the pivot axis S or arranged on the side opposite the outlet A. This results in a good leverage to deform with relatively low force when depressing the actuating element 12 on the actuating portion 12A, the wall 1 1 or can impress, in particular on the actuator 12 preferably attached or molded projection 12B.

The actuating element 12 is preferably latched onto the dispensing head 6 or head section 7.

In the illustrated example, the dispensing head 6 or head section 7 preferably has two bearing journals 7B, which can engage in corresponding bearing recesses 12C of the actuating element 12. Preferably, the actuating element 12 with its bearing recesses 12C can be latched onto the bearing journals 7B and can thus be connected in an articulated manner to the dispensing head 6. However, other constructive solutions are possible.

A second embodiment of the proposed dispensing device 1 or of the proposed dispensing head 6 will be explained in more detail below with reference to the further figures. In particular, only essential differences or new aspects are discussed in more detail. The previous remarks and explanations therefore apply in particular supplementary or corresponding. It should also be noted that features and aspects of the individual embodiments can also be combined with one another as desired, but alternatively can also be implemented independently of one another.

Fig. 4 shows a schematic section of the dispensing head 6 according to the second embodiment in the non-actuated state. Fig. 5 shows in a similar schematic section the dispensing head 6 in the actuated state. Fig. 6 shows the dispensing head 6 in a perspective, exploded view obliquely from below. Fig. 7 shows a perspective view of the terminal portion 8 of the dispensing head 6 according to the second embodiment. In the second embodiment, the proposed measure for the proposed variation of the volume of the outlet space 9 is preferably realized in that parts or portions of the outlet space 9 are movable relative to each other. In the exemplary embodiment, this is realized, in particular, in that the connection section 8 is in particular axially movable relative to the head section 7.

Preferably, the dispensing head 6 or head section 7 or outlet chamber 9 or conveying channel 9A has a receiving section 16 for receiving or movably supporting or holding the connecting section 8. This receiving portion 16 is formed in the second embodiment, for example, relatively similar to the terminal portion 8 of the first embodiment, but does not serve the (direct) receiving or storage of the connecting element 13 of the dispensing valve 4, but in the second embodiment, the inclusion of the connecting portion eighth In the second embodiment, the connection section 8 can therefore also be regarded as a type of adapter for connecting the associated discharge valve 4.

Particularly preferably, the connection section 8 is inserted into the receiving section 16.

The connection section 8 has a through-hole 8D, which serves for a fluidic connection of the dispensing valve 4 to the dispensing head 6 or outlet chamber 9 and, in particular, extends or is assigned to the outlet chamber 9. Preferably, the conveying channel 9A continues in the receiving section 16 or head section 7 in particular axially.

In the non-actuated state, ie not depressed dispensing head 6, the connection portion 8 is not completely inserted into the receiving portion 16, but from the outlet chamber 9 and the adjoining the head section 7 conveyor channel 9A (something) moved away, so that therebetween (enlarged ) Intermediate volume 17, which counts to the normal or initial or increased volume of the outlet space 9, as indicated in Fig. 4. In order for the connection section 8 to assume the abovementioned, withdrawn state, the connection section 8 is preferably resiliently biased in the direction of the dispensing valve 4 or away from the head section 7 or in a direction enlarging the outlet space 9. In the representation example, this is a corresponding Biasing means 18 are provided which may be formed or arranged, for example, on the head section 7 and / or connection section 8.

The connecting section 8 preferably has a retaining plate 8A and / or at least one or more spring sections 8B, which form the biasing means 18 and are preferably arranged on the retaining plate 8A, as indicated schematically in particular in FIG.

The spring sections 8B preferably engage an end face of the receiving section 16 in order to bias the connecting section 8 toward the dispensing valve 4.

The dispensing head 6 or head section or receiving section 16 preferably has hook-like retaining arms 16A, between which the connecting section 8 or retaining plate 8A is held axially movable but axially limited. The retaining arms 16A engage around and / or engage behind the retaining plate 8A. Accordingly, the connection portion 8 is preferably captively connected to or held by the dispensing head 6 and the head portion 7 and receiving portion 16, respectively.

Upon actuation of the dispensing head 6, this is manually pressed down or tilted or pivoted. A separate actuator 12 is not required here. Rather, the actuating region 12A is here preferably formed directly on an upper side of the dispensing head 6 or head section 7, particularly preferably on the side facing away from the outlet 10.

If the dispensing head 6 is depressed in the direction of actuation B and possibly also slightly tilted, as indicated in FIG. 5, the connecting section 8 will be against the force from the associated dispensing valve 4 (not shown here) (in particular by its closing force) of the biasing means 18 is pushed into the receiving portion 16 and thereby the intermediate volume 17 is reduced or completely closed (thus the volume of the outlet 9 is reduced or reduced accordingly) and further the discharge valve 4, not shown in Fig. 5 actuated by the operating portion 8 and opened.

In the illustrated example, in the second embodiment, the discharge valve 4 is preferably formed as a female valve. The connection section 8 forms Preferably, a male adapter, which engages in the dispensing valve 4 or is or will. However, other constructive solutions are possible, as explained later. After completion of the actuation or when releasing the dispensing head 6, an automatic reset is preferably carried out, in particular first the dispensing valve 4 closes and only afterwards or at least slightly offset in time, the intermediate volume 17 is formed again, ie the volume of the outlet 9 is increased again, or ., The connecting portion 8 returns to its disengaged starting position, as shown in Fig. 4, returns. The return movement of the dispensing head 6 or head section 7 takes place in particular by elastic return, in particular due to corresponding elastic properties of the connection region 5A and / or by other restoring means and / or by the closing force the discharge valve 4 and the restoring force of the biasing means 18th

The formation or enlargement of the intermediate volume 17 or the axial movement away of the connecting section 8 from the head section 7 or receiving section 16 after the end of the actuation leads to the proposed increase in the volume of the outlet space 9.

The force of the biasing means 18 is preferably less than the restoring force or closing force of the dispensing valve 4 to ensure the desired sequence of closure of the dispensing valve 4 and only after that, disengagement of the connecting portion 8.

For fluidic sealing between the connecting portion 8 and the receiving portion 16, a sealing element 8C is preferably provided, which is arranged in particular at the connection portion 8 or particularly preferably molded or formed. The sealing element 8C is preferably annular or ring-shaped in the illustrated embodiment.

The sealing element 8C is preferably designed in such a way that it is self-sealing, thus preferably automatically sealingly engages an associated sealing surface, in this case on an inner wall surface of the receiving section 16, when the product pressure is applied. The sealing member 8C is therefore preferable correspondingly flexible and / or thin-walled and / or conical, in particular formed with the outer end widening towards the free end outer diameter.

In the illustrated example, the sealing element 8C is arranged or formed on the axial end of the connection section 8 facing away from the dispensing valve 4. In the receiving portion 16 is preferably complementary to the sealing element 8C or matching annular groove or the like for receiving the sealing member 8C formed at fully inserted terminal portion 8. However, other constructive solutions for sealing are possible.

In general, it is provided according to the present invention that a back suction function or a variation of the volume of the outlet chamber 9 takes place as a measure according to the proposal. In particular, the volume of the outlet space 9 is reduced upon actuation of the dispensing head 6 or before and / or during actuation of the dispensing valve 4 or before, during and / or after the dispensing valve 4 is opened and only at or after completion of actuation of the dispensing head 6 or Closing of the dispensing head 6 or outlet 9 upstream or upstream discharge valve 4 is increased again to retain product 2 in the Auslass- space 9 and / or suck in this or suck back.

A proposed method and a proposed use are characterized in that when the dispensing head 6 is actuated, in particular by depression, the dispensing valve 4 is opened and the volume of the outlet chamber 9 is reduced. Reducing the volume of the outlet space 9 may occur before, at the same time, with or after the actuation or opening of the dispensing valve 4. Furthermore, a proposed method and a proposed use preferably characterized by the fact that the dispensing valve 4 is first closed and only then the volume of the outlet space is magnified. Alternatively, it is also possible that closing of the discharge valve 4 is faster than increasing the volume of the discharge space 9.

The proposed solution or measure can lead to the exhaust valve can open even at a very low pressure, as a possible Nachschäumen or taking place for example due to temperature fluctuations increase in volume of the product located in the outlet chamber 9 2 by increasing the volume of the outlet 2 preferably overcompensated. In particular, the outlet valve serves (only) to prevent product 2 located in the outlet space 9 from drying up, in particular during prolonged non-use.

Alternatively or additionally, the outlet valve can prevent product 2 from flowing out of the outlet A unintentionally or flowing, for example when the dispensing device 1 tips over. Particularly preferably, the proposed solution or measure of the variation of the volume of the outlet chamber 9 can also be used together with a nozzle as the outlet element 10A, as shown below with reference to further figures, to prevent clogging of the nozzle after use by sucking back. This is particularly advantageous in the case of a spray head for hair spray or in the case of delivery of hair spray as product 2 or similar, in particular adhesive products via a nozzle or the like.

8 shows in an enlarged partial section a third embodiment of the proposed dispensing head 6. Here, the outlet element 10A is designed as a nozzle. In the illustrated example, the dispensing head 6 preferably has a pin 19 which cooperates with the outlet element 10A or which is covered or encompassed on the outlet side by the outlet element 10A. In particular, the delivery channel 9A extends annularly around the pin 19. In the illustrated embodiment, the outlet element 10A preferably has an in particular central outlet opening 20 and / or at least one feed channel 21. In particular, the feed channel 21 connects the channel 9B with the outlet opening 20. The outlet element 10A is particularly preferably designed as a vortex nozzle.

In the illustrated example, the feed channel 21 preferably extends at least substantially radially. Preferably, the feed channel 21 is formed on or in the inside of the outlet member 10A. If necessary, it is also possible to provide a plurality of feed channels 21, which extend in particular in different radial directions.

FIG. 9 shows, in a sectional illustration corresponding to FIG. 8, a fourth embodiment of the proposed dispensing head 6. In contrast to the third embodiment, here the feed channel 21 is alternatively or additionally formed in the journal 19.

In the third and fourth embodiments, the outlet member 10A preferably has a holding portion 0B for inserting and / or latching the outlet member 10A to the dispensing head 6 and the head portion 7 and / or the outlet 10 and the channel 9B, respectively. However, other constructive solutions are possible. FIGS. 10 and 11 show, in partial sections corresponding to FIGS. 8 and 9, a fifth and sixth embodiment of the proposed dispensing head 6, each with a slightly modified outlet element 10A.

In the fifth embodiment according to FIG. 10, the outlet element 10A is designed very similar to the second embodiment as a preferably self-closing outlet valve. Here, however, the outlet valve closes more harmoniously with the outside of the dispensing head 6 or is at least substantially completely received or inserted in the dispensing head 6. In the sixth embodiment according to FIG. 1 1, the outlet element 10A is preferably formed like a grommet and / or syringe and / or provided with a relatively large outlet opening 20.

Two further embodiments of the proposed dispensing head 6 will be explained in more detail below with reference to FIGS. 10 to 15, the previous embodiments and explanations, in particular with regard to the first and second embodiments, preferably correspondingly or additionally, even if they are no longer repeated. The two other embodiments of the dispensing head 6 basically function essentially the same as the second embodiment, but the dispensing head 6 and the closing portion 8 are now not for connection to a female dispensing valve 4, but rather to a male dispensing valve 4, as in FIG the first embodiment is formed. FIG. 12 shows, in a schematic section corresponding to FIG. 4, the dispensing head 6 according to the seventh embodiment in the unactuated state. FIG. 13 is a perspective view showing the terminal portion 8 according to the seventh embodiment.

As already mentioned above, the dispensing head 6 or connection section 8 is designed for connection to a male dispensing valve 4. The connection section 8 is therefore formed at its connection end 8E for receiving a connecting element 13 of the dispensing valve 4, which preferably extends in the manner of a socket or like a sleeve, as shown in FIG. 1. For this purpose, the connection section 8 or the connection end 8E is preferably of conical design and / or provided with an insertion bevel for the connection element 13 and / or an at least substantially conical and / or cylindrical receiving region for the connection element 13.

FIG. 14 shows, in a schematic section corresponding to FIG. 4, the dispensing head 6 according to the eighth embodiment in the unactuated state. FIG. 15 is a perspective view of the terminal portion 8 according to the eighth embodiment. FIG.

The eighth embodiment largely corresponds to the seventh embodiment, so that the relevant explanations and explanations in particular accordingly applies, even if they are not repeated.

The eighth embodiment differs from the second and seventh embodiments by another design realization of the biasing means 18. This is namely formed by a preferably annular and / or conical spring portion 8B. In particular, a single and / or preferably circumferential spring section 8B is sufficient in this case instead of the several spring sections 8B provided in the second and seventh embodiments.

The spring section 8B is preferably in turn formed integrally with the connection section 8.

The spring portion 8B has with its free end or peripheral edge preferably to the receiving portion 16 and of the dispensing valve 4 away. Fig. 14 shows the dispensing head 6 in the unactuated state, as well as Fig. 4 and 12. In this unactuated state, the volume of the outlet chamber 9 and the intermediate volume 17 is increased. The spring section 8B is therefore not deformed or ensures that the connection section 8 is not pushed further or completely into the dispensing head 6 or head section 7 or receiving section 16.

The spring portion 8B is preferably elastically deformable or resilient, so that upon actuation of the dispensing head 6, the connecting portion 8 is further or completely inserted into the receiving portion 16 to effect the proposed variation of the intermediate volume 17 and / or the volume of the outlet space 9.

Preferably, the spring portion 8B is circumferentially formed in the eighth embodiment. However, the spring portion 8 may also be slotted and / or formed or subdivided by various peripheral portions.

The spring section 8B preferably forms a securing of the connection section 8 against unintentional detachment from the dispensing head 6, in particular in conjunction with one or more retaining elements 16A and / or other securing elements which radially overlap the spring section 8D.

In the eighth embodiment, the holding plate 8A provided in the other embodiments is preferably omitted.

As already mentioned, individual features and aspects of the various embodiments can also be arbitrarily combined with one another, but can also be implemented independently of one another. In particular, a dispensing device 1 and a dispensing head 6 and its use are proposed. By depressing the dispensing head 6, an associated dispensing valve 4 is opened and the product 2 to be dispensed can exit through an outlet chamber 9 and via a downstream outlet valve. In order to prevent or at least minimize dripping or re-foaming, the volume of the outlet chamber 9 is initially reduced upon actuation of the dispensing head 6 and increased again after completion of the actuation, in particular after closing the dispensing valve 4, so that the Product 2 is sucked away from the outlet 10 or outlet valve back into the outlet chamber 9.

LIST OF REFERENCE NUMBERS

1 dispenser

 2 product

 3 containers

 4 delivery valve

 5 housing part

 5A connection area

 6 dispensing head

 7 head section

 7A jacket area

 7B bearing journal

 8 connection section

 8A holding plate

 8B spring section

 8C sealing element

 8D through hole

 8E final

 9 outlet space

 9A conveyor channel

 9B connection channel

 10 outlet

 0A outlet element

 10B holding section

 11 wall

 12 actuator

 12A operating range

 12B lead

 12C bearing recess

 13 connection element

 14 riser

 15 spring means

 16 receiving section

 16A retaining element

 17 intermediate volume

 18 biasing means

 19 cones

 20 outlet opening

 21 feed channel

B actuating direction

 S pivot axis

Claims

claims: 1. dispensing head (6) for a preferably cosmetic product (2); with a connection section (8), with an outlet chamber (9) and, preferably, with an outlet (10) or outlet element (10A) downstream of the outlet chamber (9), in particular a nozzle or an outlet valve, wherein, upon actuation of the dispensing head (6), an associated dispensing valve (4) is revealed by means of the connecting portion (8), so that the product (2) from the dispensing valve (4) via the outlet space (9) and, if present, the Outlet (10) and the outlet member (10A) can be output, characterized, the dispensing head (6) is designed in such a way that the volume of the outlet chamber (9) is reduced before or during actuation of the dispensing head (6) or dispensing valve (4) and after the actuation of the dispensing head (6) or dispensing valve (4). is increased again in order to retain and / or suck product (2) in the outlet space (9). 2. Dispensing head according to claim 1, characterized in that the outlet space (9) has a channel, in particular a conveying channel (9A) and / or connecting channel (9B). 3. Dispensing head according to claim 1 or 2, characterized in that the outlet space (9) or a channel (9A, 9B) of the outlet space (9) has a preferably flexible or soft wall (1 1) for reducing or increasing the volume of the outlet space (9) in particular by elastic deformation. 4. Dispensing head according to one of the preceding claims, characterized in that the dispensing head (6) has an actuating element (12) which is in particular depressible and / or pivotable for actuating the dispensing head (6). 5. Dispensing head according to claims 3 and 4, characterized in that the actuating element (12) forms the wall (1 1) or upon actuation of the actuating element (12) of this is engageable, in particular by means of a projection (12 B). 6. Dispensing head according to claim 5, characterized in that the actuating element (12) by elastic restoring force of the wall (1 1) and / or by a spring means (15) after operation is reset to an initial position. 7. Dispensing head according to one of the preceding claims, characterized in that the connecting portion (8) for receiving a connection element (13) of the dispensing valve (4) and / or for fluidic connection to the dispensing valve (4) or connecting element (13) is formed , in particular wherein the connection element (13) can be inserted into the connection section (8) or can be plugged onto it. 8. Dispensing head according to one of the preceding claims, characterized in that the connecting portion (8) for varying the volume of the Auslass- space (9) held in particular axially movable or displaceable on the dispensing head (6) and / or movable with the outlet space (9) is coupled. 9. Dispensing head according to one of the preceding claims, characterized in that the dispensing head (6) for varying or reducing and enlarging the volume of the outlet space (9) relative to each other movable or displaceable parts, in particular the connecting portion (8) and a associated receiving portion (16). 10. Dispensing head according to one of the preceding claims, characterized in that the connecting portion (8) axially movable on the dispensing head (6) is held or arranged and resiliently in an outlet space (9) increasing axial position and / or the dispensing valve (4). is biased or movable. 11. Dispensing head according to claim 10, characterized in that the spring force for biasing the connecting portion (8) is less than the force required to open the dispensing valve (4). 12. Dispensing head according to claim 10 or 1 1, characterized in that the dispensing head (6) or connecting portion (8) has a spring portion (8B) for resiliently biasing the connecting portion (8). 13. Dispensing head according to claim 12, characterized in that the spring portion (8 B) is arm-like or annular or conical. 14. Dispensing device (1) for a preferably cosmetic product (2), wherein the dispensing device (1) has a container (3) with a dispensing valve (4) and a dispensing head (6) connected thereto, characterized, in that the dispensing head (6) is designed according to one of the preceding claims. 15. Use of a dispensing head (6) for a preferably cosmetic product (2), wherein the dispensing head (6) to a product (2) containing container (3) with a dispensing valve (4) is connected, so that upon actuation of the dispensing head (6) the dispensing valve (4) is opened and the product (2) is dispensed from the dispensing valve (4) via an outlet space (9) formed in the dispensing head (6), characterized, that the volume of the outlet space (9) is reduced during or by actuation of the dispensing head (6) and increased again after closing the dispensing valve (4) to retain and / or suck product (2) in the outlet space (9), and or in that the dispensing head (6) according to one of claims 1 to 13 is used.