DE3243097A1 - Safety cap closure - Google Patents

Abstract

Published without abstract.

Description

State of the art

The collection and disposal of dangerous goods, medical and pharmaceutical Substances, environmentally hazardous, from the field of small business, etc.

come, have special requirements for safe storage. As of now, there are a number of proposals for this, both on the Based on different materials, such as cardboard, plastic and metal, but also on the basis of various designs, in particular with regard to a secure closure.

Special designs in the lids with overlapping edges which is to be sealed gas-tight on the outside with adhesive sealing tape and the edge of the lid where adhesive sealing strips are applied on both sides are to be used special sealing elements attributable to the high demands on the proper Service.

Another special design uses a tension ring, the lid to bind tightly and tightly with the container, but due to the partial tension does not represent a secure all-round seal. In any case, these closures not only the dangers of direct contact with infected container or lid elements clearly1 but also the difficulties of safe filling and temporary filling Storage. In addition, the lids are not intended for repeated use. The sealing elements can be damaged in the process.

Task In addition to the main requirement, liquid and gas tightness regardless of the gravitational position of the vessel and the external loads, including impact loads To ensure there are additional requirements and tasks that on one special closure element dispenses with the fact that the cover cannot be destroyed without destroying it or the container can be reopened and that when the contents through the lid is closed, the vessel can be handled safely In addition, a centric stacking of the vessels on top of one another should improve the sealing force increase solution The task, a safety lid lock with the To obtain fulfillment of the above requirements is achieved in that the inverted edge of a lid has an inwardly protruding nose, the lower, inner leg of which is bevelled so that it: the outer beaded edge (1) of the container inwards and at the same time presses the inverted rim outwards, whereby the leg of the nose becomes one Forms an angle equal to or greater than zero to the lateral surface of the flanged edge (4) at a distance that corresponds approximately to the outer surface of the StUlprand, a Has sealing lip (14) which presses on the inverted edge so that in the inverted edge jacket when the nose is snapped in, an axial compressive stress is generated and the shear resistance values the nose and surface of the beaded edge (4) at least meet the stresses from this pressure tension, internal overpressure and the mechanical load.

Advantages The safety lid closure offers elastic when used Materials, especially for the sealing elementsD a number of advantages: The sealing elements are integrated in the cover and snap over by applying pressure and loosening of the Brdelranddeckel effective over the flip edge of the container. The seal remains constantly under sufficient resilient residual preload, which the mechanical, Pressure and other stresses against internal gas overpressure and liquid leakage if the container is reversed, counteracts this by moving the seal with it the tightness is guaranteed even with external impact loads. It also exists the possibility of a sealing chamber by connecting sealing elements in series establish and increase the reliability of the tightness. When loading through Stacking increases the tightness, which is particularly important for storage and transport is important in vehicles. Due to the simple design of the resilient centered Sealing elements in connection with a snap-rinosum closure occurs an increase the tightness, but also an increase in the effort to solve the seal. This is particularly advantageous in the case of disposable containers for collecting and destroying dangerous substances, e.g. 5. by burning the container and its contents. Therefor environmentally friendly, flammable elastomers are particularly suitable. An additional The advantage arises from a tapering ring edge of the inverted edge of the container, whereby the transporter is warned when manual immediate lifting that the Lid must first be attached for better handling. Because the The inverted rim is designed so that it can be fitted onto a receptacle at the same time in addition, the advantage of using it as a hanging basket and in addition to increasing the Dimensional stiffness an improvement of the closure.

Due to the further design of the closure as a clamping device for bags, the advantages of the one-way container with lid are also reduced to those of the clamping transferred from flexible bags and sacks.

The integrated design of the lid closure means that not just a safe, tight, simple, but an economical closure produced, which is particularly evident when disposable containers for incineration can be considered as a use case. This occurs even at low 6 service effort to produce the closure by putting on the cover and the high reliability of the non-detachable or difficult-to-detach lock in the Foreground.

Description Safety lid lock The safety lid lock consists of two elements, namely the upper flange of a vessel and the lid belonging to a slip-on edge, which in its extension over the The beaded edge grips The beaded edge (1) of a container or vessel - in cross section shown as an example - is characterized by the following features: The flanging is curved, in particular in the shape of a circular arc (2) with an associated central flange angle (3) in particular of more than 90 ° and a tangential extension of the lateral surface (4) to the outside, which opens into a beveled ring edge (5) at a certain distance The tangential extension of the lateral surface (4) can widen in cross section be designed. The ring edge surface (5) generally has a smaller angle than 90 D to the outer jacket surface (4). In a special design, the beaded edge have stiffening ribs (6) in certain segment sections in order to increase the dimensional stiffness to achieve the bead to the vessel wall.

If a thin bag (7) is clamped, the Vessel wall at a certain but short distance from the circular arc segment (8). Intended to the beaded edge is placed on a receptacle (9), the rounding of this must The dimensions of the receptacle correspond to the beaded edge. It is important here that the outer beaded edge has genuo spring travel to the receiving surface (10).

The flap of the lid is made up of four areas, the receptacle design for a vessel (11) to be stacked, a transition area to the arcuate, in particular circular arc-shaped area (12) with the center (13) and a sealing lip (14) or a further sealing lip (15), a subsequent one tangential extension area to the outside (1b) and a triangular or trapezoidal Nose (17).

This nose (17) can run around completely and have grooves (18) finite width of at least 1 - 2 mm, but can have larger interruptions and thus only segment-like, but at regular intervals over the circulation area be designed.

The tangential extension of the inverted edge (ins) can also be conical expand (19) and the lower edge (20) a finite width of at least 3 mm to have. The nose (17), which has a minimum width of 5 mm, has an angle of 0 o or greater (21) to the ring edge of the beaded edge.

The turned-up rim can also have two special features: When jammed of a bag (7) ends below the circular arc segment (22), thereby the lips can be designed to be seated (14) or (15) or to lie flat (23).

In order to increase the sealing force, the clamping ring must be placed between the sealing lip (14) and the nose (17) are under sufficient bias, which on the one hand by the position, size and elasticity of the sealing lip on the arch in the middle the beaded edge or the inverted edge is accomplished, on the other hand by sufficient Leg span between sealing lip (14) and nose (17), sufficient risk of deformation z. Bo by the equivalent curvature ratio of the turned edge to the flanged edge and stiffness of the clamp ring along the segments (12) and (15) and the inverted edge along the Segments (2) - and (4), with a stiffness ratio between the two elements Flanged to flanged and is greater than 1 and the elastic deformation of the flipped edge and the sealing lips (14,15,23) so large that the nose (17) or the alase segments between the grooves (18) above the edge of the ring and sufficient residual sealing force is guaranteed on the sealing lips. To make it easier to snap over, the Attack force m inverted edge within the friction angle of the sliding one on top of the other Materials of the nose (17) and lateral surface (4) are and the sliding surface as possible be lone, which is greater than 0 by an angle between the inner thigh the nose (17) and the beaded edge jacket surface (4) is reached. It may also be required be to form the ring edge (5) pointed and the angle between the upper leg the nose (17) and the beaded edge to be larger than D (21).

The extension of the nose inwards - equal to the length of the upper leg the nose (17) - must be equal to the inward deflection or so large that the Loosening of the lid neither by unequal deformation on the circumference of the edges partial ventilation is still possible by pressing the flanged collar inwards and that Lifting off by the shear resistance of the nose or the faceplate is prevented or is made more difficult.

The further shaping of the lid inwards causes either a centric application of a stacking load by centering the floor on top of the stacked container (11) with an increase in the sealing force or a centric Snapping the cover (12) into a receiving device, for example one Housing closure cover (23), which of the inverted rim (12,16) with its after inwardly directed receptacle (25) with a conical cross section and that of the to the axis directed jacket (26) of the receiving device is identical.

The inclinations of the jacket from the lid (25) and the receptacle (26) in Direction of the axis (24) are so small, in particular smaller than designed in that the snap-in or release force here is less than that of the release force of the lid to vessel is.

It is important that the force causing the snapping is immediate on the inverted edge of the lid (27), i.e. on the apex or outer segment plate (28) attaches and dß the bottom of the receiving device (29) not on that of the lid (3fl) sits on.

The choice of material for the individual parts of the security cover lock must correspond to the Farderunnen in terms of stiffness, elasticity, scratch resistance, etc., when used as a Eineg container closure also that of the flammability or incineration. A design as a safety clamping frame connection with bag (7) must meet this requirement be matched to its material.

Claims (16)

P a t e n t a n s p r ü Safety lid lock of the ff. Mark comprises: 1. Sliding edge (12) of a cover or cover frame in cross section with inwardly projecting triangular or trapezoidal nose (17), whose lower inner leg is beveled so that it has the outer beaded edge (1) of the Container pushes inwards and at the same time the flip edge outwards, with the Leg of the nose an angle equal to or greater than zero to the lateral surface of the The beaded edge (4) is formed at a distance that is approximately the same as the outer surface of the turned-over edge corresponds to a sealing lip (14) which presses on the inverted edge so that Axial compressive stress is generated in the slip-on skirt when the nose is snapped in and the shear resistance values of the nose and lateral surface of the flange edge (4) at least the stresses from this compressive stress, internal overpressure and the mechanical load. 2. Claim according to 1) Another to the middle of the lid or to the outside The lying sealing lip (15) forms, with the lip from FIG. 1, a chamber on the vertex of the inverted edge. 3. Claim according to 1) The lid is inwardly at least 60 ° des associated central flange (3) arched that on the one hand a secure centric Marking or mounting for a container to be stacked is guaranteed and on the other hand the sealing tension between lip and nose is increased. 4. Claim according to 1 to 3) The inwardly drawn beaded edge has directed to the cover axis, conical in cross-section lateral surface, whose Point inwards, with slopes smaller than those of the angle of friction between the sliding materials (possibly a conical surface of a receiving cover), however, the lower angle is not greater than 10 5. Claim according to 1 to 4) The beaded and turned-up edges are segments of a circular arc of at least 90 6. Claim according to 1 and 5) The beaded edge runs from the circular arc outwards tangentially, the Thickness ggr. Widening. 7. Claim according to 1 and 5) The inverted rim of the container expands from the arc tangential to the outside0 8. Claim according to 1 to 7) The angle from the associated surfaces of the nose (upper leg) and the ring edge of the Slip edge is larger than 0 0 0 9. Claim according to 1 and 2) The rigidity (product Modulus of elasticity x moment of inertia) and thus also the thickness must be so large that the gas and liquid tightness is guaranteed in the tensioned state0 10. Claim according to 1 and 9) The leg span between the sealing lip and the nose is at least 5 mm. 11. Claim according to 1 to 9 and 10) The leg span length with flanging and the folded edge must be so large in their entirety that elastic deformation, allows the beaded edge to snap over the flanged edge with its nose is, in particular due to the flexibility of the sealing lip or Sealing lips or a curvature ratio smaller than that of the beaded edge to slip edge. 12. Claim according to 1) There are elastomers, preferably injection-molded, used. 13. Claim according to 1) The lower edge of the flange has a Stroke edge width of at least 3 mm and a nose width of at least 5 mmO 14th Claim according to 1 and 12) In the nose (17) of the inverted rim is at least a gas or leakage groove. 15. Claim according to 1 and 12) nose of the inverted rim evenly in sections overarching. 16. Claim according to 1 to 13) cover frame curved inward and monkeys, so that it acts as a clamping frame when a bag (7) is clamped between the flanged edge and the folded edge works.