Dosing system and dispenser lid

Abstract

Dispensing system (1) for a medium (5), in particular toothpaste, comprising: - a dispenser housing (10) with a longitudinal axis (15), a first side (11), a second side (12) and a receiving chamber (20), wherein the dispenser housing (10) comprises a counter stop (21) on the first side (11) with a dispensing opening (29) designed as a connecting nozzle (28) projecting from the first side (11) and a dispensing stop (22), wherein the dispensing stop (22) is movable in the receiving chamber (20) by means of a threaded spindle (35) along the longitudinal axis (15), and the threaded spindle (35) completely penetrates the counter stop (21) through a bearing bore (25) and a free end (37) of the threaded spindle (35) projects beyond the counter stop (21) on the first side (11), - a reusable dispenser lid (40),which can be interchangeably placed on the first side (11) of the dispenser housing (10) with its connection side (43) and is held in a rotationally secure manner on the dispenser housing (10) by retaining means, - wherein the dispenser cover (40) comprises an actuating element (50) which is arranged in a stroke axis (45) so as to be movable and resilient and includes a gearbox (60), - wherein the actuating element (50) and the threaded spindle (35) are coupled by the gearbox (60), - wherein the gearbox (60) converts a stroke movement of the actuating element (50) into a rotation of the threaded spindle (35), and - wherein the threaded spindle (35) moves the dispensing stop (22) in the receiving space (20) against the counter stop (21), - wherein the gearbox (60) is arranged inside the dispenser cover (40), and the gearbox (60) includes a plug-in coupling for detachable connection with the threaded spindle (35),- wherein the dispenser lid (40) has a tubular line (54) which is provided,to direct the medium (5) from the dispensing opening (29) through the dispenser cover (40) to a dispensing opening (55), and wherein, in the assembled state of the dosing system (1), the dispenser cover (40) is detachably attached to the dispenser housing (10) and the free end (37) of the threaded spindle projects into a through-opening (46) of the dispenser cover (40) and is positively inserted into the plug-in coupling, and wherein the connecting nozzle (28) projects into the line and forms a leak-free line connection with the line (54), thereby connecting the dispensing opening (55) to the first area (31) of the receiving chamber (20).

Description

The present invention relates to a dosing system according to claim 1 and a dispenser lid with the features of claim 15. Dosing systems are known in various configurations from the prior art, for example from DE 30 10 494 A1, DE 29 41 416 A1, US 5 172 834 A, US 4 850 516 A, GB 2 146 612 A and DE 10 2005 036 634 A1. Examples of prior art include soap dispensers which have a movable and spring-loaded operating element with a dispensing opening through which the soap is dispensed when the operating element is activated. Such dosing systems have proven effective in the past; however, it has proven disadvantageous that low-viscosity or highly pasty media cannot be dispensed with such a system. It is therefore an object of the present invention to eliminate the disadvantages of the prior art and to propose a novel dispensing system that, compared to prior art dispensing systems, can dispense not only highly viscous media but also low-viscosity media, in particular pasty media such as toothpaste, in a predetermined quantity by actuating a control element. Furthermore, it is an object of the present invention to provide a dispensing system that dispenses a precisely predetermined quantity of the medium with each actuation and allows for a change of the media to be dispensed in order to meet the individual needs of the user. The dispensing system should be easy to manufacture and use, enable the realization of attractive designs, and meet the highest hygiene standards. These tasks are solved by a dosing system having the features of claim 1 and a dispenser lid of a dosing system having the features of claim 15. The dependent claims contain further advantageous embodiments of the invention. The dispensing system according to the invention for a medium, in particular toothpaste, comprises a dispenser housing with a receiving chamber, a longitudinal axis of a first side and a second side, wherein the dispenser housing has a counter-stop on the first side with a dispensing opening and a dispensing stop, and wherein the dispensing stop is movable in the receiving chamber by means of a threaded spindle along the longitudinal axis. By rotating the threaded spindle, the dispensing stop is moved from the first side to the second side of the receiving chamber, whereby the movement of the dispensing stop displaces the volume enclosed between the counter-stop and the dispensing stop. Furthermore, the dispensing system according to the invention comprises a dispenser lid which is arranged on one of the sides of the dispenser housing and includes an actuating element which is arranged to be movable and resilient in a stroke axis of the dispenser lid.The actuating element and the threaded spindle are coupled by a gearbox, whereby the gearbox converts a stroke movement of the actuating element into a rotation of the threaded spindle, and the threaded spindle moves the dispensing stop in the receiving chamber towards the counter-stop. Thus, when the actuating element is actuated, the volume in the space between the counter-stop and the dispensing stop is reduced to allow the dispensed medium to be released, and the medium is forced out of the receiving chamber. The longitudinal axis and the stroke axis of the dispenser lid are preferably aligned parallel to each other and perpendicular to a surface, such as a sink or a worktop, on which the dispensing system is placed. An advantageous embodiment of the present invention provides that the transmission comprises a first gear ring and a second gear ring. The first gear ring is movable and mounted to be rotationally fixed during a stroke. The second gear ring, on the other hand, is rotatable and mounted to be fixed during a stroke. The first gear ring is preferably coupled to the actuating element by means of a rotary joint, whereby the actuating element and the first gear ring together undergo a stroke movement when the metering system is actuated by the user. When the actuating element is actuated, the teeth of the first gear ring engage with the teeth of the second gear ring, thereby bringing the teeth into operative contact during the stroke movement. This contact generates a torque, and the stroke movement is converted into a rotation of the second gear ring about the stroke axis.The rotation of the second gear ring is transferred to the threaded spindle, which in turn is coupled to the metering stop and moves it by rotating the threaded spindle in the receiving chamber in the direction of the counter stop to dispense the medium to be metered. Furthermore, it is advantageous if the first and second gear rings are designed as ring gears and have a plurality of corresponding teeth, each tooth consisting of a feed flank and a return flank. The return flank is arranged at an angle of 90° > α > 0° to the stroke axis of the actuating element, with the angle being particularly preferably 60° > α > 30° and more preferably α = 45°. The feed flank is preferably aligned parallel to the stroke axis. According to the present invention, it is advantageous if the gearbox is arranged in the dispenser lid and the gearbox has a coupling means for detachably connecting the threaded spindle to the gearbox. The coupling means can, for example, be a quick-release coupling, with the gearbox preferably having an internal polygon into which a corresponding counterpart of the threaded spindle can be positively inserted. This creates a torque-transmitting shaft-hub connection between the gearbox and the threaded spindle. By arranging the gearbox inside the dispenser lid, it is protected from the ingress of contaminants and is as durable as possible, thus enabling the reuse of the dispenser lid. It is advantageous if the threaded spindle in the dispenser housing is supported on the second side of the housing base and against the counter stop. This double-sided support of the threaded spindle within the dispenser housing makes the dispensing system particularly robust and reliable. Furthermore, it is particularly advantageous if the longitudinal axis and the stroke axis are aligned coaxially, resulting in a particularly compact and simple design of the dosing system. With this advantageous arrangement of the longitudinal and stroke axes, the first and second gear rings are also aligned coaxially with the stroke and longitudinal axes, respectively. According to the invention, the dispenser lid has a conduit designed to guide the medium from the dispensing opening of the dispenser housing through the dispenser lid to a dispensing opening. The dosing stop provides a tubular conduit for the medium to be dispensed, through which the medium is guided leak-free from the dispensing opening through the dispenser lid to the dispensing opening. The medium is dispensed to the user at the dispensing opening. The dispensing opening can be oriented in any direction; however, it has proven particularly advantageous if the conduit is semicircular or U-shaped, thereby arranging the dispensing opening on the side of the dispenser lid or the dosing system facing the installation surface. Furthermore, it is advantageous if at least one guide is provided in the receiving space, by which the metering stop is guided along the longitudinal axis of the housing in a rotationally secure manner. Particularly preferably, the housing has one or more teeth or serrations on its inner surface facing the receiving space, which are engaged by a corresponding feature on the housing-facing side of the metering stop. Alternatively, the cross-section of the receiving space and the metering stop can be polygonal or asymmetrical, which also achieves a rotationally secure arrangement of the metering stop within the receiving space. Furthermore, it is advantageous if the actuating element and / or the first gear ring has at least one guide cam, or cams, which engage in a guide groove in the dispenser lid. The at least one guide cam preferably projects perpendicularly from the actuating element to the stroke axis and engages in the guide groove. The guide groove is preferably spirally oriented at an angle β to the stroke axis, whereby the at least one guide cam, when the actuating element is actuated, determines the angular position of the actuating element and / or the first gear ring around the stroke axis. Due to the spiral or angled arrangement of the guide groove, the actuating element and / or the first gear ring is rotationally fixed in every angular position along the stroke movement. The change in angular position due to the guide groove is at least the width or angular pitch of a tooth of the first or second gear ring.The angle of inclination is preferably less than or equal to the angle α of the return flank, i.e. β ≤ α. At least one seal can be provided between the dispensing stop and the dispenser housing, and / or between the dispensing stop and the threaded spindle, and / or between the counter-stop and the threaded spindle. The seal creates a liquid-tight seal within the receiving chamber, ensuring that the medium is dispensed exclusively through the dispensing opening provided by the counter-stop on the first side. A further particularly preferred embodiment of the present invention provides that the medium to be dispensed is arranged in a deformable packaging container, and that the dispensing stop is configured to dispense the medium from the packaging container. An opening of the packaging container is connected in a liquid-tight manner to the dispensing opening of the first dispensing stop, so that the medium can be dispensed from the packaging container by the dispensing system according to the invention in a particularly simple and hygienic manner. The packaging container is preferably a commercially available container, for example, a toothpaste tube. According to this preferred embodiment of the invention, the dispensing stop can be designed to either squeeze or level off the packaging container. Preferably, two leveling rollers may be provided on the dispensing stop for leveling off the packaging container. When the dispensing system is actuated, the packaging container, located between the leveling rollers, is compressed along its longitudinal axis in the direction of the threaded spindle. The medium stored in the packaging container is thus displaced from the container without any significant residual quantities. Furthermore, it is particularly advantageous if the packaging container in the receiving chamber is interchangeable. This makes the dosing system according to the invention highly versatile. Another aspect of the present invention relates to a dispenser lid of the dosing system according to the invention, wherein the dispenser lid is arranged on one of the two sides of the dispenser housing and has an actuating element that is movable and resiliently arranged in an axis. Another preferred embodiment of the dispenser lid according to the present invention provides that a gear unit is provided in the dispenser lid, by which the movement of the actuating element is converted into a rotation. An embodiment of the invention is described in detail below with reference to the accompanying drawings. The drawings show: Fig. 1 a simplified sectional view of a dosing system according to the invention with a dispenser housing having a receiving chamber and a dispenser lid having a movable actuating element for dispensing a medium located in the receiving chamber; Fig. 2 a schematic, perspective and highly simplified view of the dispenser housing according to Fig. 1; and Fig. 3 a schematic, perspective and highly simplified view of the dispenser lid according to Fig. 1. As can be seen in Fig. 1, the dosing system according to the invention comprises two assemblies, namely a dispenser housing 10 and a dispenser lid 40. The dispenser housing 10, as can be seen in Fig. 1 and Fig. 2, is in the illustrated embodiment a hollow cylindrical body with a longitudinal axis 15, a first side 11 and a second side 12. On the first side 11 of the dispenser housing 10, a counter stop 21 is arranged, and on the second side 12, a housing base 23. The counter stop 21 and the housing base 23 together enclose a receiving chamber 20 on an inner side 13 of the hollow cylindrical dispenser housing 10, in which the medium 5 to be dispensed and metered is arranged. The medium 5 is, for example, toothpaste. The base of the housing 23 closes off the receiving chamber 20 on the second side 12 and forms a support surface, which allows the dosing system to be placed securely on a (not shown) surface, such as a worktop or a sink. Furthermore, a dispensing stop 22 is arranged in the receiving chamber 20. This stop is movable between the housing base 23 and the counter-stop 21 along the longitudinal axis 15 and divides the receiving chamber 20 into a first region 31, in which the medium 5 is enclosed, and a second region 32, from which the medium 5 has already been displaced. The dispensing stop 22 is guided in a rotationally secure manner within the receiving chamber 20 on the inner surface 13 of the dispenser housing 10 along the longitudinal axis 15 by a guide element 24. Such a guide element 24 on the inner surface 13 and on the side of the dispensing stop 22 facing the inner surface 13 can, for example, be an interlocking knurling, a guide groove, or a guide rib. Alternatively, the rotationally secure arrangement of the dispensing stop 22 in the dispenser housing 10 can be achieved by an asymmetrical cross-section of the dispenser housing 10. The sectional view in Fig. 1 further shows that the dispensing stop 22 has at least one seal 27 on the side facing the inside of the housing 13, thereby closing the gap between the dispensing stop 22 and the dispenser housing 10. The seal 27 prevents the enclosed medium 5 from flowing from the first area 31 through the gap into the second area 32. In the longitudinal axis 15, a threaded spindle 35 is rotatably mounted in the dispenser housing 10. The threaded spindle 35 is rotatably supported on one side by the housing base 23 and on the other side by the counter stop 21 in a bearing bore 25. The threaded spindle 35 completely penetrates the counter stop 21 through the bearing bore 25, and a free end 37 of the threaded spindle 35 projects beyond the counter stop 21 on the first side 11. The free end 37 is designed as a polygon 38, for example as an external hexagon, see Fig. 2. The threaded spindle 35 has a spiral thread that extends over the entire height of the receiving chamber 20. The threaded spindle 35 is coupled to the metering stop 22 via a spindle nut 36, with the spiral thread and the spindle nut 36 being matched to each other. Through the interaction of the spindle nut 36 and the threaded spindle 35, a rotary movement of the threaded spindle 35 is converted into a translational movement of the metering stop 22 along the longitudinal axis 15. Any gaps between the spindle nut 36 and the threaded spindle 35 and between the bearing bore 25 and the threaded spindle 35 can be closed by a seal 27. As can be seen in Figures 1 and 2, a dispensing opening 29 is incorporated or formed in the counter stop 21, through which the medium 5 from the first area 31 of the receiving chamber 20 can flow out in portions or doses when the metering system 1 is actuated by the user, as will be explained in detail below. The dispensing opening 29 projects from the first side 11 as a connection nozzle 28. Furthermore, as can be seen in Fig. 1, the dispenser cover 40 is attached to the first side 11 of the dispenser housing 10 with its connection side 43. The dispenser cover 40 is detachably attached to the dispenser housing 10 and is held securely against rotation by suitable retaining means (not shown). While the dispenser housing 10 is, for example, a consumable item and can be replaced with different contents depending on the user's preferences, the dispenser cover 40 is reusable and can be designed to appeal to a specific target group. Figures 1 and 3 show that the dispenser lid 40 comprises an actuating element 50 and a gearbox 60. The actuating element 50 is mounted on a stroke axis 45 of the dispenser lid 40 so as to be movable and resilient. When actuated by the user, it can be moved from a starting position along the stroke axis 45 against the spring force of a coil spring 52. After actuation, the actuating element 50 returns to the starting position shown in Figure 1. The gearbox 60 is coupled to the actuating element 50 in such a way that when the actuating element 50 is actuated, the lifting movement is converted into a rotational movement about a lifting axis 45. The gearbox 60 consists of a first gear ring 61 and a second gear ring 62. The first gear ring 61 is coupled to the actuating element 50 and, in the unactuated state, is spaced apart from the second gear ring 62, which is supported in the stroke axis 45 in a stroke-fixed and rotatable manner. The first gear ring 61 can also be coupled to the actuating element 50 by a pivot joint, allowing the actuating element 50 to be rotated independently of the first gear ring 61. The first gear ring 61 and the second gear ring 62 are designed as bevel gears. Accordingly, each gear ring 61, 62 has a C-shaped cross-section, and the flanks projecting along the stroke axis 45 are provided with teeth 63, 64. The teeth 63 of the first gear ring 61 and the teeth 64 of the second gear ring 62 have a corresponding shape, with each tooth 63, 64 consisting of a return flank 65 and a feed flank 66. The feed flank 66 is aligned parallel to the stroke axis 45, while the return flank is arranged at an angle α to the stroke axis 45. The angle α is preferably between 30° < α < 60° of the stroke axis 45, with larger or smaller angles in the range of 0° << α << 90° being possible. The first gear ring 61 is mounted in a guide groove 42 in the dispenser lid 40 by means of a guide cam 41, see Fig. 3. The guide groove 42 is a spiral groove with a U-shaped cross-section, formed or machined into the stroke axis 45 on the side of the dispenser lid 40 facing the first gear ring 61, and engages the guide cam 41. The guide groove 42 defines the angular position of the first gear ring 61 as a function of a stroke along the stroke axis 45, so that the first gear ring 61 is rotationally fixed relative to the guide groove 42. For this purpose, the guide groove 42, see Fig. 3, is inclined relative to the stroke axis 45 – for example, at an angle β of approximately 45° – so that the first gear ring 61 changes its angular position about the stroke axis 45 as a function of the stroke traveled. The inclination angle β of the guide groove 42 is at most the angle α of the return flank. The first gear ring 61 is coupled to the actuating element 50 and, when the user activates the dosing system 1, moves along with the actuating element 50, causing the teeth 63 of the first gear ring 61 to engage with the teeth 64 of the second gear ring 62. During the stroke, the change in the angular position of the first gear ring 61 brings the respective feed flanks 66 of the first gear ring 61 and the second gear ring 62 into operative contact. This operative contact between the respective feed flanks 66 of the first gear ring 61 and the second gear ring 62 causes the second gear ring 62 to follow the movement of the first gear ring 61, resulting in a torque that rotates the second gear ring 62, which is rotatably mounted in the dispenser lid 40, about the stroke axis 45. The maximum path that can be generated by a rotation of the second gear ring 62 corresponds to the height of the feed flank 66 of the respective gear ring 61, 62. Following the lifting movement, a return movement occurs, the return movement being effected by the preload of a coil spring 52 located between the first gear ring 61 and the second gear ring 62. The respective return flanks 65 of the gear rings 61 and 62 slide past each other due to the movement defined by the guide groove 42 and the guide cam 41, so that only the first gear ring 61 moves during the return movement. The second gear ring 62 remains in its position until the next actuation of the metering system 1. The second gear ring 62 is provided coaxially with the stroke axis 45 with a polygonal recess 69, which is designed, for example, as an internal hexagon, see Fig. 3. The recess of the second gear ring 62 is further arranged coaxially with a through-opening 46 in the dispenser cover 40, which is machined or formed into the dispenser cover 40 on the connection side 43. A tubular line 54 extends from the connection side 43 and terminates in a tap 56 at a dispensing opening 55. The tap 56 directs the line 54 away from the dispenser cover 40 and has an approximately U-shaped course. The dispensing opening 55 is spaced apart from the dispenser cover 40 and is thus easily accessible for the user to receive the dispensed medium 5. In the assembled state of the dosing system 1, the dispenser cover 40 is placed on the dispenser housing 10, with the free end 37 of the threaded spindle 35 projecting through the through-opening 46 of the dispenser cover 40 such that the polygon 38 at the free end 37 of the threaded spindle 35 engages in the polygonal recess 69 of the second gear ring 62 to form a positive-locking connection. The polygonal recess 69 and the polygon 38 at the free end 37 of the threaded spindle 35 form a positive-locking shaft-hub connection through which a torque can be transmitted from the second gear ring 62 to the threaded spindle 35. The polygon 38 at the free end 37 of the threaded spindle 35 and the polygonal recess 69 in the second gear ring 62 form coupling means by which the gearbox 60 is coupled to the threaded spindle 35 or the metering stop 22. The connection nozzle 28 and the extraction opening 29 form a leak-free line connection with the line 54, thereby connecting the output opening 55 with the first area 31 of the receiving chamber 20. When the dosing system 1 is actuated by a user, the gearbox 60 converts the stroke movement of the actuating element 50 into a rotation of the threaded spindle 35. The threaded spindle 35, in turn, moves the dosing stop 22 along the longitudinal axis 15 in the direction of the counter stop 21, thereby reducing the volume enclosed in the first section 31 of the receiving chamber 20. This reduction in volume in the first section 31 of the receiving chamber 20 leads to a displacement of the medium 5, which, corresponding to the volume reduction, flows through the dispensing opening 29 via the line 54 to the dispensing opening 55. The reduction in volume of the first section 31 corresponds to the volume of the medium 5 dispensed through the dispensing opening 29. By appropriately selecting the number of teeth 63, 64, as well as the thread pitch of the spiral thread or the threaded nut, the medium 5 to be dispensed can be precisely dosed. Reference symbol list 1 Dosing system 5 Medium 10 Dispenser housing 11 First side 12 Second side 13 Housing interior 15 Longitudinal axis 20 Receiving chamber 21 Counter stop 22 Dosing stop 23 Housing base 24 Guide element 25 Bearing bore 27 Seal 28 Connection nozzle 29 Dispensing opening 30 Holding element 31 First area 32 Second area 35 Threaded spindle 36 Spindle nut 37 Free end of 35 38 Polygon 40 Dispenser cover 41 Guide cam 42 Guide groove 43 Connection side 45 Stroke axis 46 Through opening 50 Actuating element 52 Coil spring 54 Line 55 Dispensing opening 56 Tap 60 Gearbox 61 First gear ring 62 Second gear ring 63 Tooth of 61 64 Tooth of 62 65 Return flank 66 Feed flank 69 Recess α Angle β Inclination angle

Claims

Dispensing system (1) for a medium (5), in particular toothpaste, comprising: - a dispenser housing (10) with a longitudinal axis (15), a first side (11), a second side (12) and a receiving chamber (20), wherein the dispenser housing (10) comprises a counter stop (21) on the first side (11) with a dispensing opening (29) designed as a connecting nozzle (28) projecting from the first side (11) and a dispensing stop (22), wherein the dispensing stop (22) is movable in the receiving chamber (20) by means of a threaded spindle (35) along the longitudinal axis (15), and the threaded spindle (35) completely penetrates the counter stop (21) through a bearing bore (25) and a free end (37) of the threaded spindle (35) projects beyond the counter stop (21) on the first side (11), - a reusable dispenser lid (40),which can be interchangeably placed on the first side (11) of the dispenser housing (10) with its connection side (43) and is held in a rotationally secure manner on the dispenser housing (10) by retaining means, - wherein the dispenser cover (40) comprises an actuating element (50) which is arranged in a stroke axis (45) so as to be movable and resilient and includes a gearbox (60), - wherein the actuating element (50) and the threaded spindle (35) are coupled by the gearbox (60), - wherein the gearbox (60) converts a stroke movement of the actuating element (50) into a rotation of the threaded spindle (35), and - wherein the threaded spindle (35) moves the dispensing stop (22) in the receiving space (20) against the counter stop (21), - wherein the gearbox (60) is arranged inside the dispenser cover (40), and the gearbox (60) includes a plug-in coupling for detachable connection with the threaded spindle (35),- wherein the dispenser lid (40) has a tubular conduit (54) which is equipped,to direct the medium (5) from the dispensing opening (29) through the dispenser cover (40) to a dispensing opening (55), and wherein, in the assembled state of the dosing system (1), the dispenser cover (40) is detachably attached to the dispenser housing (10) and the free end (37) of the threaded spindle projects into a through-opening (46) of the dispenser cover (40) and is positively inserted into the plug-in coupling, and wherein the connecting nozzle (28) projects into the line and forms a leak-free line connection with the line (54), thereby connecting the dispensing opening (55) to the first area (31) of the receiving chamber (20). Metering system (1) according to claim 1, characterized in that the transmission (60) has a first gear ring (61) and a second gear ring (62), that the first gear ring (61) is mounted in a rotationally fixed position in a stroke movement and the second gear ring (62) is arranged rotatably and in a stroke-fixed position. Metering system (1) according to claim 2 characterized in that the first gear ring (61) and the second gear ring (62) are designed as a ring gear with a plurality of corresponding teeth (63, 64), and that each tooth (63, 64) has a feed flank (66) and a return flank (65). Dosing system (1) according to one of claims 2 to 3, characterized in that the actuating element (50) and / or the first toothed ring (61) have at least one guide cam (41) which engages in a guide groove (42). Dosing system (1) according to claim 4, characterized in that the at least one guide groove (42) is oriented at an angle obliquely or spirally to the stroke axis (45), and that the guide groove (42) specifies an angular position of the at least one guide cam (41) about the stroke axis (45). Dosing system (1) according to one of the preceding claims, characterized in that the threaded spindle (35) is rotatably mounted in the dispenser housing (10) on a housing base (23) on the second side (12) and on the counter stop (21). Dosing system (1) according to one of the preceding claims, characterized in that the longitudinal axis (15) and the stroke axis (45) are aligned coaxially to each other. Dosing system (1) according to one of the preceding claims, characterized in that the receiving chamber (20) has at least one guide means (24) by which the dosing stop (22) is guided non-rotatably in the longitudinal axis (15) on the dispenser housing (10). Metering system (1) according to at least one of the preceding claims, characterized in that a spiral spring (52) is provided which holds the actuating element (50) in an unactuated position. Metering system (1) according to claim 9, characterized in that the spiral spring (52) is arranged between the first toothed ring (61) and the second toothed ring (62). Dosing system (1) according to one of the preceding claims, characterized in that at least one seal (27) is provided between the dosing stop (22) and the dispenser housing (10) and / or between the dosing stop (22) and the threaded spindle (35). Dosing system (1) according to at least one of the preceding claims, characterized in that retaining means (30) are provided by which the dispenser lid (40) is held on the dispenser housing (10), in particular in a rotationally fixed and soluble manner. Dosing system (1) according to claim 1 or 2, characterized in that the medium (5) to be dosed is arranged in a deformable packaging container, and that the dosing stop (22) is configured to displace the medium (5) from the packaging container. Dosing system (1) according to claim 13, characterized in that the packaging container in the receiving space (20) is interchangeable. Dispenser lid (40) of a dosing system (1) according to one of claims 1 to 14 .

Images