HK40083897B - Wall-mounted metering dispenser - Google Patents

Description

Wall-mounted metering distributor

Technical Field

This invention relates to a wall-mounted metering dispenser for supplying and dispensing liquids, particularly substances with a cleansing effect or care products for body care.

Background Technology

This wall-mounted metering dispenser therefore includes a replaceable container for the liquid and a wall mount for mounting the dispenser on a building structure (typically a wall), the liquid of which can be either low or high viscosity.

The preferred building installation for a wall-mounted metering distributor is a building wall, such as the wall in a hotel bathroom or a public health facility; however, the installation can also be a piece of furniture or a dedicated bracket or support.

A container for liquids can be fixed to and removed from a wall mount for refilling or replacement. The container has a bottom region with a container bottom and a top region opposite the bottom region with an extraction port. The wall mount has two spaced-apart fixing positions for the container. In the first fixing position, a retaining element is provided for fixing the bottom region of the container, into which the container can be inserted or the bottom region can be mounted, so that the bottom region of the container is held in the first fixing position by form-locking and/or force-locking. In the second fixing position, a sleeve is provided that can be detached from or moved relative to the wall mount and can be fixed to the wall mount for securely holding and, if necessary, inserting the top region of the container.

At least when the container is mounted in a wall mount, the extraction device for metering and extracting liquid from the container is located at the extraction port in the top region of the container. The extraction device is disposed on or at least partially integrated into a sleeve used to secure the top region of the container.

Wall-mounted metering dispensers, having containers for storing and dispensing liquids and extraction devices for drawing liquids from the containers, are used, for example, in publicly accessible restrooms or corresponding rooms in the catering industry to dispense liquid soap. However, such dispensers are particularly preferred for use in hotels to dispense liquid soap, shampoo, and other personal care products, such as lotions or the like, over sinks, in bathtub areas, or in shower rooms. Current types of wall-mounted metering dispensers are characterized by their ability to meteredly and hygienically extract liquid products stored within them, while simultaneously allowing for the storage of a certain amount of liquid product to extend its lifespan until the dispenser needs refilling or until the container needs to be replaced—typically several days.

Current types of wall-mounted dispensing devices are typically constructed such that the container is installed upside down in the wall mount, meaning the extraction port points downwards. Liquid extraction thus occurs partially by gravity; the user places their hand under the extraction device, and the liquid falls downwards from it. This necessitates that the extraction device include a valve that directly or indirectly seals off the top area of the container and is only opened by the user for liquid extraction.

The valve can be opened via an operating mechanism (e.g., via an operating lever). However, since liquids with high viscosity are typically supplied in wall-mounted metering dispensers of the current type, gravity is usually insufficient to output liquid within an acceptable time when the extraction valve is opened. Therefore, it is known that extraction devices are equipped with extraction valves that open when pressure is applied to a container, at which point the container is designed, at least partially, to be yieldable and deformable for this purpose. Here, it is set, for example, as described in DE 29601 918 U1, that the user applies pressure to the container indirectly, or it can be applied directly to the container, as known, for example, from DE 10 2009 024 769 B2 or DE 10 2010 024 081 A1.

However, the necessity of applying pressure to the dispenser's container to dispense the desired amount of liquid stored within is not optimal in all situations. This is because the user must always apply a certain amount of force to extract the liquid. This can sometimes make accurate measurement difficult, often resulting in extracting more liquid than expected.

The operation of this known wall-mounted metering dispenser is not intuitive in all cultures. This is because it requires the simultaneous use of both hands, each hand having a different function in different positions. One hand must be placed under the dispensing device to catch the dispensed liquid, while the other hand is positioned on the container, squeezing it to dispense the liquid and operate the valve. Consequently, it is common for some liquid to be missed, resulting in waste and increased cleaning costs.

When the extraction device is positioned below the container and the liquid output is directly downwards, it is difficult for some users to predict exactly where the liquid will be dispensed when the container is pressed. This is because users typically do not observe the wall-mounted metering dispenser from below, thus the output port is obstructed from their view when using it.

Summary of the Invention

Based on existing technology, the purpose of this invention is to modify the wall-mounted metering dispenser of the type described above, so that the extraction device has an output port that is visible to the user and the user can perform actions within the area of the output port in order to dispense liquid.

The present invention utilizes a wall-mounted metering dispenser, largely corresponding to the design scheme taught in DE 10 2010024 081 B1, to achieve the aforementioned objective. Therefore, this relates to a wall-mounted metering dispenser for supplying and extracting liquid, the wall-mounted metering dispenser comprising a container, a wall-mounted bracket, and an extraction device, the container being for use with and replaceable liquid, the wall-mounted bracket for mounting the wall-mounted metering dispenser on a building facility, and the extraction device for metering and extracting liquid from the container. In the wall-mounted metering dispenser, the container has a bottom region with a container bottom and a top region opposite the bottom region with an extraction port, wherein the wall-mounted bracket has two mutually spaced fixing positions for the container, in which a first... A fixed position is provided with a retaining element for the bottom region of the container, the container being able to be inserted into the retaining element or the bottom of the container being able to be mounted on the retaining element, so as to form-lock and/or force-lock the bottom region of the container in the first fixed position, and in the two fixed positions, the second fixed position has a sleeve fixed to the wall bracket and detachable from or movable relative to the wall bracket for fixedly retaining the top region of the container, and the extraction device is disposed on the sleeve or at least partially integrated in the sleeve.

This design of the wall-mounted metering dispenser allows the container to be inserted into or into a fixed position on the wall-mount bracket, with a sleeve in a second fixed position secured to the bracket and equipped with a dedicated safety mechanism. This safety mechanism can only be opened with a suitable release tool or wrench to prevent theft and to prevent unauthorized operation of the container for hygiene reasons. Only trained and authorized personnel can loosen the sleeve from the bracket and separate it from the wall-mount bracket, or move the sleeve relative to the bracket, thereby releasing the container from its bottom region from the retaining element and ultimately allowing for removal or replacement of the container.

According to the present invention, in order to achieve the given objective, the structural type of the wall-mounted metering dispenser is modified such that the extraction device is configured as a metering pump, the metering pump including a pump body and an operating element, the pump body being capable of being inserted into the extraction port of the container, and the pump body including a pump chamber and a pump valve, the operating element being movable relative to the container, the operating element being configured to mechanically cooperate with the pump valve and having an output port for liquid, the output port being connected to the pump chamber via an output channel, and the operating element being guided in the sleeve.

The metering pump according to the invention thus has an operating element that is movable relative to the container and also includes an outlet for liquid, thereby ensuring intuitive operation of the wall-mounted metering dispenser: the component located at the outlet for liquid in the wall-mounted metering dispenser must be grasped and pressed by the user to dispense liquid.

According to the invention, the operating element of the metering pump is guided within a sleeve of the wall-mounted metering dispenser. This improves the stability of the wall-mounted metering dispenser because the container remains unaffected by operating forces deviating from its vertical axis and is thus not intercepted by a retaining element fixed in a first fixed position on the wall mount. The sleeve also allows for precise guidance of the metering pump's operating element. When replacing the container, the operating element need not be replaced simultaneously, which is ultimately advantageous from a sustainability perspective.

The wall-mounted metering dispenser according to the invention can be installed as in the prior art, with the container upside down, that is, the bottom area of the container is on top and the extraction device is below. However, the metering pump according to the invention enables the extraction of liquid from the container without gravity assistance; therefore, it is preferable that the wall-mounted metering dispenser according to the invention is not installed as in the prior art, but rather mounted on the building structure. Thus, the bottom area of the container is below, and the top area of the container with the extraction device is above. This provides a significant advantage: the user can directly observe the operating elements of the extraction device or metering pump and can operate the metering pump by pressing down from above.

Within the scope of this invention, the retaining element for the bottom region of the container can be a hook-shaped form that fits into a matchingly formed recess in the bottom region of the container. This provides reliable form-locking retention of the container on a wall mount and also protects the container from rotation about its vertical axis. Alternatively, the retaining element for the bottom region of the container can also be configured as a dish-shaped or basin-shaped form, or as a basket-shaped form, to receive the bottom region of the container and form-lock and/or force-lock the bottom region of the container to prevent lateral slippage. This securing function can be suitably achieved by the basket-shaped, dish-shaped, or basin-shaped retaining element by means of a rolled edge or by using protrusions or crown-shaped teeth that project and bend on the edge side.

The second fixing position on the wall-mount bracket preferably has a snap-lock connection structure for securing the sleeve to the wall-mount bracket. This snap-lock connection structure can only be released using a suitable release tool or wrench. As already mentioned, this not only prevents theft but also ensures that the contents of the container are always hygienically secure, as the container cannot be opened by the user or other unauthorized personnel.

The extraction port of the container in the wall-mounted metering dispenser according to the invention preferably has a bottleneck shape with external threads. The sleeve, which can be fixed to the wall mount at the second fixed position and is movable relative to the wall mount for container replacement, preferably has an internal thread that matches the external thread of the container. That is, the container can be screwed out of and re-screwed into the sleeve for replacement or refilling, which also ensures a reliable form-locking connection and ensures that the container is fixed to the wall mount.

In particular, it is especially advantageous for the sleeve to be equipped with an anti-reverse locking structure when the retaining element for the bottom region of the container is not a hook-shaped form that prevents the container from rotating about its vertical axis in the first fixed position. Once the container is screwed into the sleeve, it can no longer be detached from the sleeve without releasing the anti-reverse locking structure.

For hygiene reasons, it is particularly preferred that once the wall-mounted metering dispenser is in use, the container can no longer be detached from the sleeve. In this case, within the scope of the invention, it is preferred that the anti-reverse safety structure includes a plurality of teeth configured to contact the bottleneck of the container and/or the external thread of the bottleneck when screwed into the internal thread of the sleeve. At this time, the teeth are formed and/or designed to be elastically deformable, such that the teeth at most slightly hinder the screwing of the external thread into the internal thread, but conversely, prevent the external thread from being screwed out of the internal thread without damage.

This is preferably achieved in such a way that the sleeve is made of plastic and the teeth of the anti-reverse safety structure are formed by elastically bendable tongues molded onto the sleeve, the tongues being approximately tangentially fitted onto the bottleneck or the external thread of the bottleneck.

The anti-reverse safety structure thus constructed is further aided by the fact that the bottleneck is provided with a flange composed of teeth in the form of a ratchet, with each tooth having a gentle side and a steep side, so that the teeth of the anti-reverse safety structure act as pawls.

Within the scope of this invention, the outlet for the liquid is preferably located at the tip of the outlet nozzle on the operating element, where the sleeve of the wall-mounted metering dispenser has a notch for the outlet nozzle, into which the outlet nozzle sinks during the pump stroke. The pump stroke cannot be performed and liquid cannot be dispensed if the outlet nozzle is not aligned with the notch but rotates relative to the notch about the vertical axis of the container. This provides an advantage for the transport of refill containers.

Finally, the container of the wall-mounted metering dispenser according to the invention may be provided with at least one transparent or translucent strip extending from the top region to the bottom region for reading the filling height.

Attached Figure Description

The following describes and explains two embodiments of the wall-mounted metering distributor designed according to the present invention in detail with reference to the accompanying drawings. Important features of the invention may also be included in the description of the drawings, but the invention is not limited to the specific features illustrated in these examples. Wherein:

Figure 1 shows an isometric view of an embodiment of a wall-mounted metering dispenser according to the present invention;

Figure 2 shows a front view of the wall-mounted metering dispenser of Figure 1;

Figure 3 shows a cross-sectional view along plane A-A in Figure 2;

Figure 4 shows a schematic exploded view of the wall-mounted metering dispenser of Figure 1;

Figure 5 shows a top view of the sleeve of the wall-mounted metering dispenser;

Figure 6 shows a cross-sectional view along plane B-B in Figure 5;

Figure 7 shows a top view of the top area of the container;

Figure 8 shows a front view of a second embodiment of the wall-mounted metering dispenser according to the present invention;

Figure 9 shows a side view of the wall-mounted metering dispenser of Figure 8;

Figure 10 shows a front view similar to Figure 8, but without the container.

Explanation of reference numerals in the attached figures

1-Container; 2-Wall-mounted bracket; 3-First fixed position; 4-Hook-shaped forming part; 5-Notch; 6-Bottom area; 7-Second fixed position; 8-Sleeve; 9-Top area; 10-Operating element; 11-Output channel; 12-Output port; 13-Notch; 14-Snap-fit connection structure; 15-Extraction port; 16-External thread; 17-Pump body; 18-Operating surface; 19-Internal thread; 20-Anti-reverse safety structure; 21-Stabilizing groove; 22-Toothed part; 23-Tooth; 24-Receiving part; 25-Seal; 26-Sealing ring; 27-Contact surface; 28-Basin-shaped forming part; 29-Edge.

Detailed Implementation

Figure 1 shows an isometric view illustrating an embodiment of the wall-mounted metering dispenser designed according to the present invention. A container 1 for the care product is held by a wall-mounted bracket 2, which is in turn fixed to a wall (not shown). The wall-mounted bracket 2 holds the container 1 in a first fixed position 3 with a position-fixing retaining element, which is currently designed as a hook-shaped member 4. The member is form-locked into a recess 5 in the bottom region 6 of the container 1, thereby protecting the container 1 from lateral sliding from the first fixed position 3 and also preventing the container 1 from rotating about its vertical axis.

A sleeve 8 is provided at the second fixed position 7 of the wall-mount bracket 2. The sleeve is inserted into the top area 9 (here covered) of the container 1, and in this way, the container 1 is also form-locked onto the wall-mount bracket 2. The sleeve 8 can be released from the wall-mount bracket 2 by a release tool (not shown) so that the container 1, together with the sleeve 8, can be pulled upward from the wall-mount bracket 2, and the engagement of the container 1 with the hook-shaped forming element 4 is removed. In this way, the container 1 can be replaced very easily.

In another embodiment (not shown), the retaining element at the first fixed position 3 of the wall mount 2 has a different shape, particularly a disc or basin shape, so that the container 1 can be inserted into this retaining element at the first fixed position 3. Alternatively, the retaining element can also be constructed in a basket shape or have any other arbitrary shape, allowing the retaining element to combine with the sleeve 8 to reliably secure the bottom region 6 of the container 1 to the wall mount 2.

In another embodiment (not shown), it is also possible to simply remove the sleeve 8 at the second fixed position 7 and move it relative to the wall bracket 2, so that the container 1 can be removed from the sleeve 8, and the container can also be released from the first fixed position 3 and removed from the wall bracket 2.

Finally, as shown in Figure 1, an operating element 10 of a metering pump is provided in the top region 9 of the container 1. This operating element 10 is located inside the sleeve 8 and guided by the sleeve to meterly deliver liquid from the inside of the container to the output channel 11 through an extraction port (not visible here) in the top region 9 of the container 1. The output channel has the shape of an output nozzle in the present case and ultimately outputs liquid from the output port 12.

The sleeve 8 has a notch 13 at its upper circumferential edge, into which the outlet or nozzle-shaped outlet channel 11 can be submerged during one pump stroke of the operating element 10; this is because the operating element 10 is pressed downward against the container 1 to operate the metering pump. At this time, liquid or care product is dispensed through the outlet 12.

Figure 2 shows a front view of the wall-mounted metering distributor of Figure 1. Here, the same reference numerals can be used for the features of the wall-mounted metering distributor and reference can be made to the description of Figure 1.

Further details of this embodiment are shown in Figure 3, which is a cross-sectional view along plane A-A of Figure 2. The container 1 with bottom region 6 and top region 9, the wall-mounted bracket 2 with first fixed position 3 and second fixed position 7, the hook-shaped forming element 4 and sleeve 8 embedded in the recess 5 of the container 1, together with the operating element 10 guided therein, have been described in detail with reference to Figures 1 and 2.

Based on this cross-sectional view, Figure 3 shows a locking latch connection structure 14 at the second fixed position 7. This latch connection structure secures the sleeve 8 to the wall mount bracket 2, and can only be released using a release tool (not shown) to allow the sleeve 8 to be removed from the wall mount bracket 2. The operating element 10, guided inside the sleeve 8, does not pose an obstacle due to its placement within the sleeve 8, and is not affected by the release tool.

As can also be seen based on the cross-sectional view in Figure 3, the sleeve 8 is fitted onto the top region 9 of the container 1, thereby forming a lock and reliably holding it in the top region. As described in more detail below with reference to the other figures, the connection between the container 1 and the sleeve 8 is ultimately a threaded connection; since the extraction port 15 of the container 1 is formed through a bottleneck at the top region 9 of the container, the bottleneck is provided with external threads 16.

As can be readily seen with reference to Figure 3, according to the present invention, a pump body 17 having a pump chamber and a pump valve (not visible in this figure) is installed in the extraction port 15, which is configured as a bottleneck in the container 1. The pump body is a common metering pump body found in the market, thus requiring no detailed explanation of the pump chamber, pump valve, and their operating principles. The pump valve and pump chamber of the pump body 17 are activated by an operating surface 18, which in turn cooperates with an operating element 10. Pressing the operating element 10 realizes the pump stroke, and as is known per se, liquid is thus discharged from the container 1 through the output channel 11 integrated in the operating element 10.

As will be described in detail below with reference to other accompanying drawings, sleeve 8 has an internal thread 19 that engages with an external thread 16 at the extraction port 15. An anti-reverse safety structure 20 here prevents the container 1 from potentially detaching from sleeve 8, provided the wall-mounted metering dispenser is assembled to a ready-to-use state.

Another implementation (not shown) does not use an anti-reverse safety structure, allowing all parts replaced when changing containers to be refilled and reused. This is desirable for sustainability reasons.

Figure 4 shows an exploded view of the wall-mounted metering dispenser shown in Figures 1 to 3, where the same components are also labeled with the same reference numerals. As can be seen from this figure, the current embodiment of the wall-mounted metering dispenser according to the present invention mainly includes: a container 1 having an extraction port 15, an external thread 16, a notch 5, and a stabilizing groove 21; a wall-mounted bracket 2 having a first fixed position 3 and a second fixed position 4, and a hook-shaped forming element 4 serving as a retaining element for the bottom region 6 of the container 1; a sleeve having a notch 13; a pump body 17 having an operating surface 18 and a sealing ring 26; and an operating element 10 having an output channel 11 and an output port 12.

A toothed part 22 for anti-reverse safety is provided in the top region 9 of the container 1, which will be described in detail below.

Figure 5 shows a top view of the sleeve 8, while Figure 6 shows a cross-sectional view of the sleeve 8 along plane B-B in Figure 5. These figures show that the sleeve 8 is provided with an internal thread 19 for receiving the external thread 16 of the container 1. For this purpose, a number of teeth 23 are used as an anti-reverse safety structure 20. These teeth 23, like the entire sleeve 8, are made of polypropylene and thus possess a certain inherent elasticity. The teeth are molded onto the sleeve 8 and have a tongue shape that fits approximately tangentially against the bottleneck of the container 1, so that the teeth hardly cause difficulty in screwing in the external thread 16, but do not allow the external thread 16 to rotate out of the internal thread 19 without damage. A crown consisting of teeth 22 in the top region 9 of the container 1 also ensures the latter function, as shown in Figure 4, but also clearly visible in Figure 7, which shows a top view of the container 1. The teeth 22 have a gentle side and a steep side, respectively, so that the teeth 23 of the anti-reverse safety structure 20 are used as pawls, and the teeth 22 on the container 1 are arranged in the form of a ratchet.

Furthermore, Figure 5 shows the fitting of the sleeve 8 with the second fixed position 7 via the snap-fit connection structure 14.

Figure 6 additionally shows that the sleeve 8 is provided with a receiving portion 24 for the pump body 17 and a seal 25 for the output channel 11 within its internal thread 19. The sealing ring 26 (Figure 4) of the pump body 17 fits against the contact surface 27 in the sleeve 8, thereby preventing undesirable leakage of liquid at this location.

Figure 8 shows a second embodiment of the wall-mounted metering dispenser designed according to the present invention, as shown in Figure 2, in a front view. A side view of this second embodiment can be seen in Figure 9. Components of the second embodiment shown here that are identical to those of the corresponding components in the first embodiment of Figures 1 to 7 are given the same reference numerals. In this regard, reference will be made to the foregoing description of the drawings, particularly Figures 1 and 2.

The difference between the second embodiment and the first embodiment lies in the design of the retaining element for the bottom region 6 of the container 1 at the first fixed position 3. In the first embodiment according to Figures 1 to 7, the retaining element is constructed as a hook-shaped member 4, which is form-locked into the notch 5 in the bottom region 6 of the container 1. In particular, the second embodiment, as shown in Figures 8 and 9, is equipped with a basin-shaped member 28 as the retaining element for the first fixed position 3. The basin-shaped member 28 has a high circumferential edge 29 so as to form-lock the bottom region 6 of the container 1 in a motion component oriented perpendicular to the vertical axis of the container 1. In this way, the container 1 cannot be removed from the wall mount bracket 2 without releasing one of the two fixed positions 3 and 7.

Figure 10 shows the wall mount bracket 2 of the second embodiment as a front view as shown in Figure 8, but without showing the container 1, in order to more clearly show the difference from the first embodiment with the hook-shaped molding 4: the second fixing position 7 is designed to be the same as in the first embodiment, and the first fixing position 3, as a retaining element, has a basin-shaped molding 28 with a surrounding edge 29 for receiving the bottom region 6 of the container 1. The basin-shaped molding 28 may, for example, have a centrally located hole to allow any liquid that may appear (e.g., condensation between the bottom region 6 of the container 1 and the surrounding edge 29 or splash water in a shower) to drain out.

Claims (10)

1. A wall-mounted metering dispenser for supplying and extracting liquid, the wall-mounted metering dispenser comprising a container (1), a wall-mounted bracket (2), and an extraction device, the container (1) being for supplying and being replaceable, the wall-mounted bracket (2) for mounting the wall-mounted metering dispenser on a building facility, the extraction device for metering and extracting liquid from the container (1), the container (1) having a bottom region (6) with a container bottom and a top region (9) with an extraction port (15) disposed opposite to the bottom region (6), the wall-mounted bracket (2) having two mutually spaced fixing positions for the container (1), in which the first fixing position (3) is provided with a fixed position for... A retaining element for the bottom region (6) of the container (1), into which the container (1) can be inserted or on which the bottom of the container can be mounted, so as to hold the bottom region (6) of the container (1) in a form-locking and/or force-locking manner in the first fixed position (3), and in the two fixed positions, the second fixed position (7) has a sleeve (8) fixed to the wall bracket (2) and detachable from or movable relative to the wall bracket for fixing the top region (9) of the container (1), and the extraction device is disposed on the sleeve (8) or at least partially integrated in the sleeve (8). Its features are, The extraction device is configured as a metering pump, which includes a pump body (17) and an operating element (10). The pump body (17) is capable of being inserted into the extraction port (15) of the container (1), and the pump body includes a pump chamber and a pump valve. The operating element (10) is movable relative to the container (1), and the operating element is configured to mechanically cooperate with the pump valve and has an outlet (12) for liquid. The outlet (12) is connected to the pump chamber via an outlet channel (11). The operating element (10) is guided within the sleeve (8). The extraction port (15) of the container (1) is a bottleneck with an external thread (16), and the sleeve (8) has an internal thread (19) that can fit into the external thread (16). 2. The wall-mounted metering distributor according to claim 1, characterized in that, The retaining element for the bottom region (6) of the container (1) is a hook-shaped molding (4) that is embedded in a matchingly shaped notch in the bottom region of the container (1). 3. The wall-mounted metering distributor according to claim 1, characterized in that, The retaining element for the bottom region (6) of the container (1) is configured as a dish-shaped or basin-shaped part (28) or as a basket-shaped part to accommodate the bottom region (6) of the container (1) and to fix the bottom region (6) of the container (1) in a form-locking or force-locking manner to prevent lateral sliding. 4. The wall-mounted metering distributor according to any one of claims 1 to 3, characterized in that, The second fixed position (7) has a snap-lock connection structure for fixing the sleeve (8) to the wall bracket (2), and the snap-lock connection structure can only be loosened by a suitable release tool. 5. The wall-mounted metering distributor according to claim 1, characterized in that, The sleeve (8) has an anti-reverse safety structure (20) to retain the external thread (16) of the bottleneck in the internal thread (19). 6. The wall-mounted metering distributor according to claim 5, characterized in that, The anti-reverse safety structure (20) has a plurality of teeth (23) that are configured to contact the bottleneck and/or the external thread (16) of the bottleneck when screwed into the internal thread (19) of the sleeve (8), and the teeth are formed and/or designed to be elastically deformable such that the teeth cause at most only a small difficulty in screwing the external thread (16) into the internal thread (19), but do not allow the external thread (16) to rotate out of the internal thread (19) without damage. 7. The wall-mounted metering distributor according to claim 6, characterized in that, The sleeve (8) is made of plastic, and the teeth (23) of the anti-reverse safety structure are formed by elastically bendable tongues molded onto the sleeve, the tongues being approximately tangentially fitted onto the bottleneck or the external thread (16) of the bottleneck. 8. The wall-mounted metering distributor according to claim 7, characterized in that, The bottleneck is provided with a flange consisting of teeth (22) in the form of a ratchet. Each tooth has a gentle tooth side and a steep tooth side, so that the teeth (23) of the anti-reverse safety structure act as pawls. 9. The wall-mounted metering distributor according to claim 1, characterized in that, The outlet (12) for liquid is located at the top of the outlet nozzle on the operating element, and the sleeve (8) has a notch (13) for the outlet nozzle, into which the outlet nozzle sinks during the pump stroke. 10. The wall-mounted metering distributor according to claim 1, characterized in that, The container (1) has at least one transparent or semi-transparent strip extending from the top region (9) to the bottom region (6) for reading the fill height.