SE462678B - PACKAGING CONTAINER OF PLATE WITH ASSEMBLY LID - Google Patents

Description

462 678 It is further known that the annular portion of the lid _ is designed with an asymmetrical cross-section as indicated in the attached patent claims, By the inner arcuate transition between the annular portion ocn the vertical wallï designed with a smaller radius, a better and more precise one is achieved centering of containers and by the external transition to the cylindrical wall is given a larger radius becomes' this transition is more elastic and can withstand better oscillations.

The result is that the filled containers are better able to withstand stacked on top of each other.

More specifically, it has been found that the relationship ~~~ e ' between the radii of the arcuate Transitions should be about 2: 1.

Furthermore, it has proved appropriate to the transition between the curtain mirror and the surrounding vertical wall are shaped with a radius equal to the radius of the transition between this wall and the annular portion. This radius ratio is practical both from the manufacturing point of view and in terms of the power distribution in the lid during the stresses to which it is later subjected.

The invention aims to create a diameter transition at the cylindrical wall between the annular portion and the top of the lid. Through the transition, the terrace similar jumps which merge downwards into a cylindrical wall portion which is substantially parallel to the container wall.

This gives the curtain mirror some freedom of movement in radial direction at different stresses, such as that the door mirror strikes outwards, which could otherwise cause damage or at least dents on the container wall. Another advantage consists in that the lid comes easier when right it must be pressed firmly onto the container. And finally is the terrace-like leap an advantage when new lids are stacked on each other, these centering nicely in relation to eachother. ~ _í .__, ._, ___. , b) 462 678 By shaping the bottom of the annular portion completely flat also improves stabiliuetez on a pile of f * “da containers.

It hg. further proved to be the terrace-like leap should preferably be at half the total height of the lid, ie in the middle between the bottom of the annular portion and the highest the point on the outer edge of the lid. At this height should also the lower edge of the outer edge of the lid lie to give good stacking of new lids on top of each other.

The invention will moreover be described in more detail below : v * ~ ..; g to attached drawings, there Fig. 1 shows a part of a section through the upper part of a known container according to the invention with associated lid at large magnification, Fig. 2 shows the lid of Fig. 1 and the lower edge of one thereon stacked other containers, the lid being changed according to the invention, there Fig. 3 shows a lid according to Fig. 2 at an internal overpressure in the container and there Fig. 4 shows two lids stacked on top of each other.

Figures 1 and 2 show the upper part 1 of the wall in one closest cylindrical container. At least the lower part of such a container is, however, partially conical. Over the edge of the container turns into a collar 2 as in the drawings has a circular cross section.

The depressed lid 3 which closes the container seals against its wall at a cylindrical outer wall 4 which fits tight in the container opening. Upwards, wall 4 passes into an arch 5 to a bent edge 6. Inside the arch 5 is located an elastic sealant 55 as from the beginning has a crescent-shaped cross-section as shown in Fig. 4.

In this way, this sealant comes when the lid is attached 10 15 20 25 30 462 678 the container to fill the space between the container collar 2 and the lid edge 5,6 and the frame 5 surrounds the collar 2 almost concentric. 9 turns into a serrated edge 7 directed inwards «ct be» 4 "Worse; U the retaining wall so that the handle grips the collar 2 and the edge 7 goes over the_sn & da wall 9 into a rounded outer edge 80 Under the cylindrical outer wall 4 of the lid, this merges into an annular portion 10 which has a flat portion at the bottom ll. As can be seen, the annular portion 10 is asymmetrical '/ f _, _, ---._. \ _ ~ __?, __ \ _ ,, cross section in that it passes both outwards and inwards “ in arcuate portions 12,13. The party has 12 between the bottom ll and the cylindrical wall 4 larger radius than the portion 13 between the bottom and a vertical, cylindrical wall 14.

The cylindrical wall 14 passes upwards via another arcuate portion 15 of the concave curtain mirror 16.

The radius of the arcuate portion 12 is suitably double as large as the radius of the party 13.

The arcuate portion 15 between the wall 14 and the mirror 16 should have the same radius as the lot 13. Except that gives a nice geometry, it is advantageous from the production at the same time as it provides a good power distribution between the portions 13 and 15 in case of deformations in_1ocket as for example if this tends to dent outwards.

The lid of Fig. 2 differs from that of Fig. 1 thereby that the outer wall 4 downwards turns into a terrace-like jump 17 which merges into another cylindrical portion 18 with a smaller diameter than the wall 4. Both the wall 4 and the wall 18 are substantially parallel to the outer wall of the container l. The ridge 17 is approximately at half the height of the lid, i.e. midway between the bottom ll and the upper edge of the frame 5. 10 l5 20 25 30 35 in!! 462 678 This position of the jump seems to be favorable for the distribution of deformations in the lid.

Fig. 2 further shows that the lower edge of the outer edge of the lid 8 li gives in the same plane E as the leap l7. The advantage of this is shown in Fig. 4 which shows two lids stacked on top of each other and one sees how well the upper lid with the gap 17 and the oblique wall 9 settles on the upper edge 5 of the lower lid. In this way, a large number can lids are stacked on top of each other without squeezing the edges each other. The large radius of the arc 12 also participates to avoid contact between parties other than just the edge sections.

Fig. 2 shows the stacking of closed containers on top of each other.

The lower part of the wall ~ can be seen from the upper container l and the bottom l9 which two parts are assembled in a bent rebate 20. This rebate forms the lower edge of the container and in that at least the lower part of the container is conical the diameter of the seam becomes smaller than that of the top of the container part. It is seen that the rebate 20 rests on the inner part of the bottom of the annular portion 10 is almost towards it the arcuate portion 13 which thereby centers the upper container in relation to the lower one. The drawing gets here considered purely schematic. The stacking shown in Fig. 2 is, moreover, the same as occurs at lid according to Fig. 1.

Without having to go into a more detailed franc position of power distribution and power loads at the temptations and deformations that may occur during transport sport of stacks of containers is easy to understand that the large radius of the arcuate portion 12 gives this batch has good elasticity so that it can absorb and deflections without permanent deformation or crack. The same is the case if the door mirror is on due to overpressure in the container strikes outward to convex form. 462 678 In the design according to Fig. 1, the arcuate is added the portion 12 and the bottom ll tend to spring downwards while; id üfformningen, en1igt "f1g% 2§dess parts tend to spring radially outwards as shown in Fig. 3. This is a consequence of the fact that the cylindrical part 18 has less diameter than the container wall, which is why such a suspension to the outside can be allowed without risk of deformation of the the wall§ In none of the cases do you need to fear any damage on container or lid. »R

Claims (1)

7 462 678 CLAIMS 1. Packaging container (1), preferably a bucket, of sheet metal with an outwardly directed collar (2) around the opening and intended to cooperate with a retractable lid (3) made of sheet metal, the cylindrical outside (4) of which is friction-fitted to abut the inside of the container opening, this outside of the lid upwards having a bent edge (6), which is provided with an elastic sealing means (55), which is intended to enclose substantially concentrically the collar of the container with the lid attached and which bent edge (6) is followed by a lid grip, and the lid downwards merges into a horizontal circumferential recess which is connected with its inner edge to a lid mirror which circumferential recess has an asymmetrical cross-section with transitions having different radii of curvature, characterized in that the cylindrical outside (4) is provided with a diameter transition (17) so that two successive cylindrical parts (4 and 18) to the outside arise, the upper part being intended for abutment against the inside of the container opening and the second part (18) is intended to be located at a distance from said inside and then substantially parallel to said inside. Packaging container according to Claim 1, characterized in that the diameter transition (17) lies approximately midway between the bottom (11) of the circumferential recess and the ridge (5) to the bent edge (6) of the lid (4). Packaging containers according to claim 1 or 2, characterized in that the diameter transition (17) is at the same level as the lower end of said bent edge (6).