BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a closing cap for a discharge head of a medium container, having a dosing pump, which can be inserted in a sealed manner into a container neck, for drawing medium out of the medium container and dispensing it in a pump stroke which can be triggered by actuation of the discharge head, according to the preamble to claim 1.
2. State of the Art
Such liquid containers with dosing pumps, especially when their contents constitute a certain risk potential, such as, for example, medicinal products, must be able to be closed in a childproof manner. In the pharmaceutical industry, dosing pumps are used in many different versions, with spray head, drip adapter, throat adapter, etc., to allow a dosed extraction of liquid medications from containers or bottles.
The object of the invention is therefore to provide a childproof closure which prevents children, in particular of a certain age group, from extracting medium from a dosing pump and, at the same time, is simple to manufacture, install and operate.
BRIEF SUMMARY OF THE INVENTION
A closure in the form of a closing cap is hereby provided, which offers a childproof closure and makes extraction by adults only slightly more difficult. At the same time, the closure, as a protective cap, protects the sensitive actuating head from damage. Fitting is possible at all times, including in retrofit. No specific modification or adaptation of the existing dosing pumps is needed. The closing cap is a mount-on part.
Further embodiments of the invention can be derived from the following description and the sub-claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is explained in greater detail below with reference to the illustrative embodiments represented in the appended diagrams, wherein:
FIG. 1 shows a side view of an upper portion of a medium container with dosing pump,
FIG. 2 shows a side view of a discharge head,
FIG. 3 shows the medium container according to FIG. 1 with mounted discharge head according to FIG. 2,
FIG. 4 shows a side view of a closing cap according to a first illustrative embodiment in assembly sequence,
FIG. 5 shows a side view of the fitted closing cap according to FIG. 4,
FIGS. 6 to 8 show different sections from FIG. 5,
FIGS. 9 and 10 show elevations of the closing cap according to FIG. 4, with fitted bottom part and removed top part,
FIG. 11 shows a side view of a fitted closing cap according to a second illustrative embodiment,
FIG. 12 shows a section according to FIG. 11,
FIG. 13 shows a top view of the fitted closing cap according to FIG. 11,
FIG. 14 shows an elevation of the closing cap according to a third illustrative embodiment, with fitted bottom part and removed top part,
FIG. 15 shows an elevation of the closing cap according to a fourth illustrative embodiment, with fitted bottom part and removed top part,
FIG. 16 shows an elevation of the closing cap according to a fifth illustrative embodiment, with fitted bottom part and removed top part.
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1 to 3 show a container 22 for medium, or a product, in particular liquid, having a dosing pump 21, on whose cylinder 3 a discharge head 20 can be mounted. The discharge head 20 is at the same time an actuating head and is here configured with a drip adapter 24. The represented dosing pump 21 boasts a flanged ring 1 of metal, which is flanged around a holding edge 46 of the container neck 6. The discharge head 20 is generally mounted onto the cylinder 3 after the flanging of the dosing pump 21.
The dosing pump 21 can alternatively close the container 22 using other types of fastening, such as screw closures or snap closures. The dosing pump 21 can thus be inserted in a sealed manner into the container neck 6, for drawing medium out of the medium container 22 and dispensing it in a pump stroke which can be triggered by actuation of the discharge head 20.
FIG. 3 shows the mounted discharge head 20, which is usually held on the dosing pump 21 purely by a press fit between the cylinder 3 and a receiving bore 2 on the discharge head 20. It is therefore possible at any time to remove the discharge head 20 again with relatively little force.
FIG. 4 shows the closing cap according to the invention in the sequence in which it is assembled as a closure. The closing cap accordingly comprises a sleeve-like bottom part 4, which can be fastened to the container neck 6 and can be detachably latched to a top part 5. Preferably, the bottom part 4 is non-detachably connected to the container neck 6, and thus to the container 22 and the inserted and, for example, edge-flanged dosing pump 21. The bottom part 4 is preferably a structural part, in the form of a wide-ring-like sleeve, which can be snap-locked onto the container neck 6, here the flanged ring 1, and which is seated on the flanged ring 1. In addition, the bottom part 4 can also be fastened in a clamp-like manner on the container neck 6.
As shown by FIGS. 6 and 8, the bottom part 4 has on a bottom edge, for the fastening to the container neck 6, obliquely angled claws 7, which, when the bottom part 4 is pushed onto the flanged ring 1, can deflect upwards and, once an end position is reached, return to their original position. A removal of the bottom part 4 is then no longer possible. The end position of the bottom part 4 can be determined by means of stops 8. The flanged ring 1 is then clamped in place between the claws 7 and the stops 8.
FIG. 4 shows that the bottom part 4, for locking to the top part 5, has locking edges 9 on the outer side. A number of locking edges 9 are distributed over the periphery and are arranged at a distance apart along an upper rim region of the bottom part 4. The locking edges 9 are ribs which protrude relative to the outer side and which, at one end, each have a stop 17. Between the locking edges 9, gaps 25 are respectively left. The bottom part 4 further has on an inner side latch bosses 10, which protrude relative to the inner side. The latch bosses 10 are arranged on the inner side distributed over the periphery and leave a radial distance to the outer periphery of the dosing pump 21. The position of the locking edges 9 and of the latch bosses 10 can be mutually aligned so as to obtain a latching to locking elements on the top part 5, as is described below. In addition, the bottom part 4 preferably boasts a slide face 15, which can be formed by a top edge of the sleeve-like bottom part 4.
As shown by FIGS. 4 to 6, the top part 5 is configured in the style of a cap and has a widening lower rim region 40, which overlaps the upper rim region of the bottom part 4, where the locking edges 9 are disposed.
As shown by FIGS. 7 to 10, the top part 5 has on a lower edge of the lower rim region 40 internally protruding locking edges 11, which can be brought into engagement with the locking edges 9 of the bottom part 4, thereby preventing a removal of the top part 5. Preferably, the top part 5 reaches with its locking edges 11 under the locking edges 9 of the bottom part 4. To the slide face 15 on the bottom part 4 there is preferably also assigned an opposing slide face 16 on the top part 5, as can be seen from FIG. 8. For the locking, the top part 5 is mounted such that the locking edges 11 of the top part 5 are pushed downwards through the gaps 25 of the locking edges 9 of the bottom part 4 until the slide face 15 of the bottom part 4 and the opposing slide face 16 of the top part 5 lie one upon the other. The top part 5 is then turned clockwise, so that the locking edges 11 of the top part 5 slide under the locking edges 9 of the bottom part 4 as far as the stop 17. The top part 5 preferably has, parallel to the locking edges 11, above-situated recesses 41, through which the locking edges 9 of the bottom part 4 are visible during the latching process. The locking edges 11 of the top part 5 are preferably ribs, with a length matched to the length of the gaps 25, so that it is easily possible to slide through the same.
In addition, the top part 5 boasts a formed-on resilient locking arm 12, having an actuating surface 14. The locking arm 12 has a latching tooth 42, having a locking edge 13 which, in interaction with the latch bosses 10 of the bottom part 4, prevents a rotary motion which is necessary for the unlocking. The latching tooth 42 is situated on a peripheral line inwardly distanced from the peripheral line on which the locking edges 11 are disposed. The latching tooth 42, by entering into engagement with the latch bosses 10 on the inner side of the bottom part 4, can latch-lock the top part 5. To this effect, the latching tooth 42 is moved behind a latch boss 10. As a result of the resilient coupling, the latching tooth 42 can be moved over the latch boss 10 and cannot be turned back without renewed inward deflection of the latching tooth 42 by the application of pressure to the actuating surface 14. In the other rotational direction, preferably in the clockwise direction, a block is applied by the stop 17 on the locking edges 9, against which latter the locking edges 11 on the top part 5 butt.
By means of the actuating surface 14, it is consequently possible from outside to bring the locking edge 13 into a setting that releases the latch bosses 10, by pressing on the actuating surface 14 and, at the same time, turning the top part 5, so that the locking edges 11 on the top part 5 are turned into the position of the gaps 25 on the bottom part 4.
For the latching, the resilient locking arm 12 of the top part 5 is pressed inwards, counter to the spring force 4, preferably against bevels 18 on the latch bosses 10 of the bottom part 4. Once the end setting is reached, as represented in FIG. 7, the locking edge 13 of the locking arm 12 springs behind a holding edge 19 of the latch boss 10. The top part is now in the locked state. The actuation or removal of the discharge head 20 is no longer possible. In order to unlock the top part again, the locking edge must be brought into the release setting with the aid of the actuating surface of the locking arm 12, whilst, at the same time, the top part 5 must be turned anti-clockwise.
The bottom part 4, which is non-detachably connected to the container 22 and the flanged ring 1, can still be freely rotated about its axis. An additional degree of difficulty is thereby obtained, because, as the top part 5 is unlocked, the bottom part 4 must be secured with the other hand.
FIGS. 11 to 13 show a second illustrative embodiment of the closing cap with a formed-on lug 26, which serves as a quality assurance. The lug 26 is connected to the top part 5 by a predetermined breaking point 27. The lug 26 is here arranged such that the unlocking motion of the locking arm 12 is prevented if an attempt is made, via the actuating surface 14, to unlock the top part 5. Only once the lug 26 has been broken off or removed, can the top part 5 be unlocked.
FIGS. 14 to 16 show further illustrative embodiments, which differ from the first, above-described illustrative embodiment in that the discharge head 20 is differently shaped for different applications. The respective discharge head 20 here has a dispensing device 43, which is variously shaped. The top part 5, which is usable as a protective cap, is in each case matched appropriately thereto. Otherwise, the above comments apply correspondingly.
Patent Application
20100308081
