EP0658334B2 - Refuse container - Google Patents

Description

The invention relates to a disposal container according to the preamble of claim 1.

Such containers serve e.g. in hospitals and medical practices for collection, transportation and disposal of hazardous medical waste. They have different sizes depending on the application, angular or round cross-section and are, e.g. in this size a toy bucket, e.g. also as "disposal box" designated. They are for disposal by incineration Containers usually made of a thermoplastic Material made. For cost-effective production and a space-saving stacking before use are those made separately from the lid Container body at the top over the entire container cross-section open and taper to the bottom of the container there. For hazardous waste over a longer period of time in e.g. small dimensions and small quantities, such as. Cannulas of used disposable syringes, To be able to collect safely, the containers are included closed a lid, which in turn is a smaller, easily lockable for the duration of the collection and has the opening opening to be opened again. For a single filling with hazardous waste subsequent disposal, however, the containers also, e.g. on the top of the container, one through have a lid closable opening, the is smaller than the cross section of the container.

So that the lid after closing the Can not detach containers from them again, so a potentially harmful contact with a to prevent contaminated container contents Containers are usually provided with a lid lock. Such is e.g. from DE G 92 04 212 for a conically tapering towards the bottom, open at the top "Disposal box" known. It is a kind of snap lock trained and accordingly has two complementary securing parts. One of them is, so to speak as a locking device, as an outside on the edge of the Box housing opening all around, frustoconical downwards expanding material thickening and the other is, as it were, a snap-in element, as one on the inner wall of the outer leg of the almost U-shaped rib collar circumferential bead of material. To close this disposal box and secure yours The lid has to be opened with some effort the edge of the box housing to be pressed to the outer Leg of the lid collar over the material thickening at the edge of the box housing until the Beaded material on the lid edge collar below this Material thickening is engaged, causing the box lock and the lid securing process has ended. The stiffness of the thermoplastic used is decisive Material, the thickness of the side wall of the box housing and the cover collar wall as well as the thickness of the material bead on the lid collar leg and the thickening of material on the edge of the boxing area about how to close the lid and bring about the locking device goes. For adequate locking security these factors are coordinated so that to close the box, which is only by snapping it into place the lid is finished, not just a not insignificant one Effort, but for some users probably also requires some skill. Because due to through the necessary expansion of the exterior Leg of the lid rim collar when pressed on generated on the edge of the box housing in this Material tension resists the lid, so to speak the pushing movement on the box housing or bringing about the engagement. So it is helpful to him to hold on to where it is already locked then fully engage in the rest of the area. With regard on a still manageable handling of a such a lid closure or securing leads possibly to limit the diameter of a a cover to be closed in this way. In addition, this causes the material bead due to the taper on the edge of the box housing edge snapping the cover into the outer cover collar leg existing material tension that under unfavorable conditions, e.g. if during transportation such a disposal box is jammed for disposal or the weight of other filled boxes you are burdened by indenting its side wall in the Area of the lid opening, e.g. even when falling, this known type of snap lock does not hold and the lid detaches from the box housing. This can also material fatigue due to prolonged storage of the Contribute boxes before putting them into use.

In addition, this well-known cover lock, especially in a version that is a lighter To enable such a box to be closed, wantonly even by a minor, by means of an aid easy to perform expansion movement of the Cover collar, e.g. with the blade of a knife, to be solved so far that the lid is back can be removed from the container.

From document EP-A-0 168 877 is a container made of plastic according to the preamble of Claim 1 with an also against automatic Loosen secured lid for collecting and Known hazardous waste disposal. With regard good demoldability of that to be produced by injection molding This has a lid from the injection mold a preferred embodiment a V-shaped edge collar widening downwards, being at the free The outer edge of the collar is claw-like at intervals, V-shaped flaps that point upwards are trained. The container body has below one of the edge of the container lid opening protruding circumferential rib on the outside, covering the cover flap has corresponding recesses. At the Closing the container with the lid penetrate the Rag into the recesses, bend after back to the container wall and finally rest below the rib, forward to its outer edge jumping, a. So the lid is from that of the The elasticity of the cover flaps determined the spring force held the container, the rib being one of the curved rag represents engaging abutment.

The lid edge collar has to form the rag a - seen in cross-section - complex S-shape. For evenly locking the tabs under the container rib for a permanently tight lid seat the flaps must be curved evenly and the Rib should be even and the used one Do not tire plastic so that the rags do not become theirs Lose elasticity.

The formation of the rag requires an additional one Cutting or punching process. Also demands closing the container some skill and Force. For this, at least several must first adjacent lobes simultaneously in the recesses the locking rib "threaded" and then to Locking are pushed through, what they are by first applying force to the container wall have to bend.

Because the tabs snapped under the locking rib are freely accessible, z. B. no security filled against unauthorized opening, for disposal certain container.

The document contains this cover lock EP-A-0 168 877 two alternatives. In there in Fig. 3rd shown are - as already mentioned explained - on the outside of the container or on the inside of the cover collar all-round ribs the former clicks into place, and the one in Fig. 4 shown around the outside of the container wall parallel to this, by incisions in an additional wall made around the faceplate Flaps with barbs at the end, which are used for the lid closure in recesses in one at the bottom facing collar protruding outwards engage all-round rib and above click into place. The latter solution offers because of rags immediately accessible no security against unauthorized loosening of the snap-on cover or influences that lead to loss of tightness of the lid closure being able to lead.

The invention is based on the problem of a Disposal container of the type described above with to create a lid lock that is exceptional high protection guarantees both against automatic Loosen the lid from the container body as well against willful attempts to remove the lid, including one simple design and therefore inexpensive manufacture of container body and lid allows, in particular also in a form that is space-saving Transport and storage by stacking the Container body allows a combined closure of the container body and securing the lid on Container body so relieved that this is neither noteworthy effort another special Dexterity is required, and a germ-tight one Lid closure of the container body allows.

The invention solves this problem with the im Claim 1 specified features. Beneficial Further training is the subject of the subclaims.

Characterized in that the edge of the container lid opening is flange-like is widened that the snap elements on the outside of this Edge, protruding elastically from it and a free end are formed, with the free ends after below indicate that the lid one in its container Ver circuit arrangement approximately the edge of the container lid opening U-shaped encompassing collar that the abutment inside the outer leg of this collar is formed that the free ends of the latching elements engage in the abutment in their locked position and that the flange-like widened edge of the container lid opening ensures the container tightness The following results in a favorable sealing contact surface.

When closing the container body with the lid with the downward movement of the Lids also take off at the same time, almost automatically without additional measures taken by the operator who: Snap elements automatically their intended Resting position for which in particular none Skill more is required. Because because the snap-in elements instead of the lid according to the invention on the container body are trained, they are now on this positionstlxlert, so when closing the Container can no longer be moved with the lid, the lid on them moves along until they rest at him and he at the same time its closed position on the container body have taken. Because the snap elements are not more are formed on the lid necessary to close the container body exact positioning and adjustment of the Cover for threading the locking elements into the corresponding Cutouts gone, which is this process now very simplified, relieved and accelerated.

Can also with the lid lock according to the invention the snap-in elements have a simple shape, which is an advantage in terms of their education is and also guarantees their functional reliability in the long term.

Because here too with the new type of cover securing several latching elements are provided, but according to the invention with its free end down point, it is achieved that the extent of the achievable security against loosening the lid from Container body u. a. no longer, as in the beginning the prior art cited from DE G 92 04 212, of the security effect of only one, but of that of several snap elements is determined. Since these several snap-in elements are intended together a securing part of the cover lock of the disposal container according to the invention form and are arranged accordingly, unfold they also have an equal hedging effect, which is reproduced according to their number due to their cooperation and which the overall effect in the thus formed Cover protection determined. It can at several snap-in elements, the single snap-in element despite a high overall security of this cover lock comparatively small and weak be dimensioned. That in turn reduces the Exertion of force due to their spacing acting independently and independently of one another To bring the locking elements into their locking position, to an exceptionally high degree. However, the effort required is reduced accordingly for the closure of the container body with the lid or its fuse as a whole, too then when a corresponding closing movement with the cover all the snap-in elements at the same time brought into their locked position become.

But not only the effort can be put on this Way drastically decrease but it now requires no special skill anymore, the disposal container with its lid lock according to the invention close with the lid and close it to back up. This is due to the elasticity of the outside of the container body protruding snap-in elements allows to close the container body can give way instead of - as in the prior art - to oppose this process, which also still saves power.

These two properties of the invention Lid locks are just in medical Sector where such disposal containers are very often from female employees, such as Nurses, are used, which should not be underestimated. You can be very accepting of these containers for those who only put the containers into use have to close with the lid, contribute. It also closes the container body and bringing about the cover lock accelerates when there is hardly any strength and Skill are required.

Due to the elastic arrangement of the snap-in elements on the outside of the container body Close the lid opening with the lid one - if only slight - build up material tension, that at the end of the closing movement of the lid to independently take their snap-in position can be used as it is e.g. B. in a spring-loaded Pawl in a tooth lock is the case.

Because the snap elements with their free end According to the invention point downwards Cover in its intended locking arrangement on the container body in which he is now from the on this trained latching elements is held, so to speak, no longer consuming himself with him trained locking elements on the Container body stops, no longer from the container body to solve. To do this would be a lid movement in the axial direction of the disposal container is necessary. Such but prevented the reinforcing accordingly Pawl function of the locking elements, which yourself in such a movement as intended on the abutment designed for this purpose would get caught more and more. That follows from the fact that the locking elements even after their on the support of the abutment - that is, on the cover Locking position under a material tension stand who in this position and therefore also holds in the pawl-like engagement on the abutment. An attempted axial lid detachment movement the lid lock according to the invention would be less with regard to the quality of the engagement of the engagement elements claim than on the stability of their pawl-like Intervention at the abutment. So completely Contrary to that known from DE G 92 04 212 State of the art in which the quality of the lid lock depends on how good the - there - only - snap element after snapping off the rigid Material thickening locking device secured against disengagement is, the lack of pawl function only in this Respects again, i.e. so only this The detent movement would have to be reversed to the To be able to loosen the lid again. In contrast, the cover securing according to the invention also the willful attempted to reverse the snap motion, e.g. by pulling the carrier of the Abutment, not for disengaging the snap-in elements lead because of their elastic arrangement can take part in such a train movement and not would remain in their locked position. So you can neither axial lid detachment movements nor such Manipulations that initially result in a disengagement of the snap-in elements from their snap-in position on the abutment are directed to detaching the lid from the Guide the container body.

Because there are several snap elements, each take a lock position that is independent of the rest there are a corresponding number of snap-in elements, which are each a solving of the Resist the lid of the container. To the nevertheless To be able to detach the lid from the container next all snap elements from their snap position brought to the carrier of the camp, namely against those still existing in them in this position Material tension. This would also cause a possibly successfully disengaged snap element without immediate locking in this disengaged position back into its locked position return and so loosen the lid from the Would prevent container again. Besides, can by simple constructive measures the access to the snap-in elements, e.g. by appropriate Cover ribs, difficult or completely prevented become. This is the inventive Snap lock also against manipulation to the Secured release of the lid from the container.

The easy closability according to the invention or cover securing one - usually for handling by a single person - certain disposal container does not rule out that heavy disposal containers with e.g. thick Walls for high stability, in which the invention Snap lock also for use can come to the lid closure despite the basic "smooth running" of the invention Snap lock then accordingly higher effort may be required.

It is also conceivable for the latching elements to be on the outside on the container body directly at the edge of the container lid opening e.g. by gluing or welding to the container, to be retrofitted.

The formation of the snap elements outside on the edge of On the one hand, opening the container lid still allows a smooth inner wall of the container body, like her for a space-saving interlocking of the e.g. through an appropriately conical design Container body is advantageous and hampers on the other hand also not an interlocking, so that also conical container body with the invention Lids are inexpensive in large quantities can be purchased and stored in a space-saving manner can.

Through the flange-like widened edge of the container lid opening e.g. in the crown of the lid edge collar to be arranged flexible Sealing a sufficient tightness Support area created. This can when closing the lid by pressing accordingly the lid will be pressed together until the tongues are engaged on the locking lip. After relieving of the latched lid allow the on the Rest lip under their material tension Tongue ends that the lid and thus the seal approximately one that enables germ-tightness Press fit. But it is also conceivable that at appropriate material for the disposal container and optimal design of the tongues that of these tension on the lid leads to this. that the container without an additional seal in the lid edge collar e.g. is waterproof.

A preferred, i.e., not restrict in any way of the example to illustrate an execution. form of the invention is a Ent according to claim 2 care container with an open from the top circular Container body formed circular container lid opening. With him have the snap elements preferably the shape from the outside at the edge of the Container lid opening trained, with their free End downward-pointing tongues, from which it, preferably evenly spaced, e.g. for reasons of tightness, as explained further below will stand out like a wreath. Such tongues do not affect inexpensive mass production of disposal containers made of plastic, because they in one step with the manufacture of the container body can be trained on these and for this and with regard to the demolding of the container body no much more elaborate tools than the production of e.g. from DE-G 92 04 212 known container with the outer circumferential design Detent lock are required.

The abutment for such tongue-shaped is advantageous Snap elements one inside at the bottom of the outer leg of the cover rim collar all around trained locking lip. Such stiffens and on the one hand, advantageously reinforces the outer leg of the lid collar, which increases its stability increased against a detaching movement of the lid, at which the tongues with their free end on the locking lip would push. On the other hand, a such lip not only in a structurally simple manner the pawl-like seat for the tongues in their the Design the cover to prevent it from detaching, but at the same time also the one for snapping into place the tongue position to be specified establish. To lock the tongues, first bend the outer leg of the collar with the Locking lip when closing the container lid opening with the lid because of their material properties elastic at the edge of the container lid opening arranged tongues increasingly to the container outer wall towards them, so that there is material tension in them builds up. This leads to the fact that at the end of the Container closure movement of the lid when the Lid collar on the edge of the container lid opening that sits behind the lip for a snap certain tongues free of this and through the material tension built up in them independently like pawls of a ratchet in their locked position on the outer leg of the lid collar jump in under it on the inside wall remaining material tension.

Due to the lip-shaped design of the abutment the free tongue ends are covered so that access to them is at least difficult and with it a deliberate moving out of the tongues from its locked position. Thus this offers the invention Locking protection also provides a high level of protection against the willful detachment of the lid from the container, without additional security measures.

The tongues can be easily connected to different Load requirements are adapted, which are mainly of the size of the against Removal of the lid to be secured and the Depending on the weight of the container contents. So it can Tongue thickness and thus both the elasticity of the tongues in the area of their arrangement at the edge of the container lid opening as well as the tongue stiffness for the rest Tongue area without special manufacturing technology Additional expenditure on the respective container wall thickness be coordinated. But it can also the distances between the individual tongues The width and length of a single tongue varies become.

In a preferred embodiment of the invention on the one hand, the tongues stand when they are unlocked Container formed in one with the container axis acute angle of approximately 30 ° from the side wall of the container and is the outer leg of the Lid collar in a formed with the lid axis acute angle of approximately 20 °. As a result, the tongues set the closing movement no great resistance to the lid, since they are only slightly Container outer wall must be pressed, so that the outer leg of the lid collar with the latching lip can slide along what the Exertion of force to close the container body helps reduce. On the other hand, it does a comparison to the cantilever angle with the container unlocked from 30 ° only by approximately 20 ° projecting The tongues snap into place on the inside of the outer leg of the cover rim collar is the snap-in position securing material stress, but also a high security against detachment movements of the Cover. Because in this 20 ° inclination they have with a detaching movement of the cover in the axial direction forces transmitted from the container to the locking lip due to the very short distance in this position the locking lip from the elastic arrangement of the Tongues on the edge of the container lid opening around which they are pivotable, only a very small power arm and thus cause only a very small torque the tongues, which these e.g. not to a one tilting away from such movement can bring the outer wall of the container.

For a further increase in the stability of the tongues can be the thickness of the tongues from their root of the tongue at the edge of the container lid opening to the free tongue end to accept. This allows you to Lid detachment movement greater forces from the locking lip pick up and into the stiff container lid rim initiate without their thickening easy bendability at the root of the tongue impaired would.

The width of the locking lip advantageously takes at least on their inner flank to their base the inner wall of the outer leg of the lid collar towards. This allows the lid to be taken the latching of the tongues on Lid collar centered and under a certain Tension free of play on the edge of the container lid opening are forced.

For a container with e.g. a container lid opening with a circular cross-section the am Tongues arranged at the edge of the container lid opening preferably trapezoidal from its root of the tongue on Opening edge towards the free end of the tongue. This makes possible, despite such an opening edge curvature continue to be flexible in the axial direction of the container body Train tongues. Because the wider the tongue root in such a curved one The edge of the lid opening, the less elastic it is, because the existing curvature in the Would continue tongue and stiffen it so. By a trapezoidal extension to the free end of the tongue but the root of the tongue can be just as wide be that the opening edge curvature its elasticity not yet significantly affected while the width the free end of the tongue can be dimensioned that the tongue is so flexible in itself that it can move at least approximately in the latching position full-surface inside on the outer leg of the collar edge collar to order from this over the Tongue area supported for additional stability become. Despite the narrow root of the tongue, one can Tongue are formed in one size, which is not only adequate tongue stability against bending, but through the the lid due to a larger width of the free Tongue end on one in comparison to the root of the tongue much larger circumferential length of these in its Lock position is held and secured. Since the Number of tongues from theirs by the widths of the root of the tongue and the free end of the tongue Size depends, therefore a larger number of tongues leads to smaller and possibly also smaller dimensions Tongues and thus for an even easier handling the lid lock at a corresponding great security.

A preferred embodiment of the invention is shown schematically in the accompanying drawings and is described below.

Fig. 1

eine Draufsicht auf einen oben offenen, unverschlossenen Behälterkörper eines erfindungsgemäßen Entsorgungsbehälters;

Fig. 2

den Behälterkörper aus Fig. 1 teils im Längsschnitt, teils in Seitenansicht;

Fig. 3

den Behälterkörper aus Fig. 1 mit aufgesetztem Deckel im Längsschnitt und

Fig.4

eine Einzelheit bei X in Fig. 3 in größerem Maßstab.

Show it:

Fig. 1

a plan view of an open, unlocked container body of a disposal container according to the invention;

Fig. 2

the container body of Figure 1 partly in longitudinal section, partly in side view.

Fig. 3

the container body of FIG. 1 with the lid in longitudinal section and

Fig. 4

a detail at X in Fig. 3 on a larger scale.

1 to 3 approximately on a scale of 1: 1 shown container body 1 is a so-called "disposal box" for collection, transport and disposal of small medical waste Dimensions and small quantities, e.g. Cannulas of disposable syringes, determined and available for disposal by burning from a thermoplastic Plastic. It has a circular cross section and widens conically towards its upper end, where it is open across the entire cross-section. To close the existing container lid opening 2, a cover 3 is provided. The in Fig. 3 in Cover 3 shown in section has an approximately U-shaped Lid collar 4, the outer leg 5 in the lid locking position shown Grips around edge 6 of the container lid opening 2. The lid 3 also has a through - not shown - Lockable opening 7 for hazardous waste, so that the closed with the lid 3 Disposal container during garbage collection always be easily closed and opened can, without having to remove the cover 3, as intended after the lid lock of the container body 1 can no longer be detached from it should be.

For this purpose the disposal container is included a locking mechanism designed in the manner of a locking mechanism provided which comprises two securing parts. The one securing part is twenty-four in the Form of downward-pointing tongues 8 Snap-in elements. You are with the one shown here Embodiment evenly spaced from each 15 ° from each other in the shape of a ring on the outside at the edge 6 the container lid opening 2 arranged distributed from which due to their material properties or that of the container body 1 protrude elastically. It is but also a much smaller angle between the individual tongues conceivable what the lid lock according to the larger number of tongues then possible can increase even further.

The other securing part is - as an abutment for the tongues 8 - one inside at the bottom of the outer Leg 5 - as a support for the abutment - the decorative rim collar 4 all-round locking lip 9.

As in Fig. 4 in the lower, hatched sectional view with the tongue 8 'shown in dashed lines indicated, is that formed with the container axis acute projection angle of the tongues 8 when unlocked Container body 1 approximately 30 ° while the outer leg 5 of the lid collar 4 at an acute angle formed with the lid axis of only approximately 20 °.

When closing the container body 1 with the Cover 3, the elastically protruding tongues 8 - as indicated in the upper part of FIG. 4 with the lid 3 ' - pressed towards the outside of the container, whereby a material tension builds up in them. If the cover 3 its in the hatched sectional view 4 shown in the closed position on the Has taken up edge 6 of the container lid opening 2, is at the same time the locking lip 9 over the free end 8a the tongues 8 slid out so that the tongues 8 in to give in to this moment of material tension and - audibly engaging - in their engaging position on jump outer leg 6 of the lid collar 4. Since this approximately 20 ° locking position not their tension-free, almost 30 ° starting position with unlocked Corresponds to container body 1, they are therefore located still in a state of tension leading to this leads to a residual stress on the inner wall of the outer leg 5 of the lid collar 4 and each individually as one Pawl of a ratchet engages with the locking lip 9 stand.

Since the pivoting of the tongues 8 when putting it on of the lid 3 to its closed position the edge 6 of the container opening 2 only approximately Is 10 ° and the tongues here because of their smooth Surface texture of the container closure movement of the lid 3 offer practically no resistance, requires this locking movement one extremely compared to the prior art minor effort while inducing the associated lid lock none at all More effort is required because of the tongues 8 their material stress automatically in jump into their locked position. So the container closure and the lid lock in the inventive Disposal container, so to speak Child's play, so that's neither really strength nor Skill required.

When the cover 3 is moved away from Container body 1, which take place only in the axial direction could, the free ends 8a of the tongues 8 due to the in them in the of them still engaged Material tension like a pawl on the inside Hook edge 10 of the locking lip and so with one here a total of 24 times pawl engagement on the Locking lip 9 such a detaching movement of the cover 3rd prevent. A willful attempt to cover 3 from the container body 1, for example by pulling off the outer one Leg 5 of the lid collar 4 away from the To solve the outer wall of the container is the elastic Arrangement of the tongues on the edge of the container lid opening 2 opposed, due to which such a movement join in and not their locking position inside leave on the outer leg 5 of the cover collar 4 would.

As can further be seen from FIG. 4, the thickness of the tongues 8 decreases downward from its tongue root at the edge 6 of the container lid opening 2, from which they protrude in an arc shape with a radius of curvature that eases their bending when the lid 3 is placed on the container body 1 free end 8a towards, which further increases their own rigidity - with a simultaneous elastic arrangement.

The locking lip 9 widens on its inside Flank 10 to its base on the inner wall the outer leg 5 of the cover collar 4, whereby the cover 3 without play under a certain exerted by the tension-loaded tongues 8 Train in its closed position on the edge 6 of the Container lid opening 2 is held.

This training can also be used for a press fit one e.g. in the crown of the lid collar 4 arranged flexible seal for the purpose of germ-tight Lid closure of the disposal container used be, whereby the gem. Fig. 1 widened flange-like Edge 6 of the container lid opening 2 a tightness favoring sealing contact surface forms. However, it has been shown that even at an angle of 15 ° between the individual tongues, so as in illustrated embodiment, one with Tongues 8 on the circular container lid opening equipped "disposal box" without additional Seal e.g. is waterproof. This effect could be by reducing the angle between each Tongues, i.e. by increasing their number, still reinforce.

As shown in Figs. 1 and 2, the broaden Tongues 8 trapezoidal from their tongue root on Edge 6 of the container lid opening 2 to its free Tongue end 8a. This is due on the one hand a narrow tongue root an elastic arrangement guaranteed at the edge 6 and on the other hand the Length of engagement of the tongues 8 on the locking lip 9 is increased. This allows the cover 3 over the locking lip 9th with only short breaks between each Tongues almost evenly all over Circumferential length of the outer leg 5 of the lid collar 4 on the edge 6 of the container lid opening 2 what is seated on the Container body 1 and thus its closure very much makes sure. You can also use the cover 3 acting transfer movement forces with only minor Interruptions between the free tongue ends 8a and the locking lip 9 transferred to the tongues 8 and in initiated the stable edge 6 of the container lid opening 2 become.

Claims (6)

1. Waste disposal container with a container body which can be closed by a lid and a lid securing device to prevent detaching of the lid from the container lid opening, the lid securing means comprising at least two securing parts, one of which is formed on the container body in the region of the container lid opening and one is formed on the lid in the region of the lid rim and the one securing part is formed as an arrangement of a plurality of latching elements (8) which each project elastically from the relevant region at least with a portion or component distanced from adjacent latching elements (8) and directed at least partially downwards, and the other securing part is formed as an abutment (9) for the latching elements (8), a latching position which can be assumed by latching and is determined by the carrier of the abutment being provided for these latching elements (8) in the arrangement of the lid (3) provided for the latching elements in the container lid opening (2), in which latching position the latching elements (8) mesh with the abutment (9) in a locking pawl-like manner, characterised in that the rim (6) of the container lid opening (2) is widened in the manner of a flange, in that the latching elements (8) are formed externally on this rim (6) so as to protrude therefrom elastically and have a free end (8a), the free ends (8a) pointing downwards, in that the lid (3) has in its container closure arrangement an approximately U-shaped peripheral collar (4) which surrounds the rim (6) of the container lid opening (2), in that the abutment (9) is formed internally on the outer limb (5) of this peripheral collar (4), in that the free ends (8a) of the latching elements (8) engage in their latching position in the abutment (9) and in that the rim (6) widened in the manner of a flange of the container lid opening (2) forms a sealing support face which promotes the container tightness.
2. Container according to claim 1, with a circular container lid opening formed by the open container body which is circular at the top, characterised in that the latching elements (8) are formed as tongues which are evenly spaced apart from one another and project from the rim (6) of the container lid opening (2) in a ring-like manner and in that the abutment is formed as a latching lip (9) which extends round the inside of the lower edge of the outer limb (5) of the peripheral collar (4) of the lid.
3. Container according to claim 2, characterised in that when the container body (1) is not closed, the tongues (8) project from the side wall of the container body (1) at an acute angle formed with the container axis of approximately 30°, and in that the outer leg (5) of the peripheral collar (4) of the lid forms an acute angle with the lid axis of approximately 20°.
4. Container according to claim 2 or 3, characterised in that the thickness of the tongues (8) increases from the tongue root at the rim (6) of the container lid opening (2) toward the free tongue end (8a).
5. Container according at least to claim 2, characterised in that the width of the latching lip (9) increases at least from its inner edge (10) to its base.
6. Container according to at least claim 2, characterised in that the tongues (8) widen trapezoidally from the tongue root at the rim (6) of the container lid opening (2) toward the free tongue end (8a).

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