FI74676B - TILLSLUTNINGSGARNITYR FOER PLAOTBEHAOLLARE. - Google Patents

Description

1 74676

Shut-off device for tin tank

The invention relates to a closure device for a sheet metal container, preferably for a bucket or similar packaging container 5, which is formed by a lid ring connected to the upper end edge of the container body by a folding seam and a push-in lid cooperating with the lid ring opening.

Packaging containers, e.g. buckets, having the above-mentioned closure device in many modifications are generally known and have been used successfully for many years.

It is known to those skilled in the art that these packagings thus shaped generally have a limited structural size. Experience has shown that the closing safety from a given container diameter of 15 with a rising diameter can no longer be maintained. The reason for this is not only that external deformations, e.g. collision, creep or the like / occurrence, cause severe deformation and e.g. the lid can fly away completely, but also that the push-in lid can explode more easily due to internal pressure in the container. caused by the filling article itself or the filling article column due to external mechanical stress on the tank.

To avoid this problem, the solutions proposed so far, such as the double-sided lid, where the lacquered and non-lacquered surfaces correspond in the closed position (DE-GM 1 945 111), were regularly too expensive, both in terms of material and the variety of manufacturing steps and thus too expensive. -30 paste.

Other solutions again had the disadvantage that separate additional securing elements were necessary to close the lid.

It is an object of the present invention to provide a closure device of the kind previously described which solves the above-mentioned problems in order to solve the above-mentioned problems and avoids the disadvantages of the known solutions. as described above, i.e., effectively prevents the push-in lid from exploding open, thereby incurring very little cost in the construction, material, and manufacture of the device.

According to the invention, this object is achieved in that the cover ring has a rim below the end of the folding seam from the inner wall, which is shaped inwards and turns into a vertical collar ending in an outer rim, the law of which is in the area of the folding seam. an contact surface acting together with the collar, which is limited by an outwardly directed shoulder rotating downwards in an annular manner.

This design increases or improves the contact of the push-in lid in the closed position in practically two interconnected ways. Thus, the shoulder of the retractable lid in the closed position at the transition edge between the rim of the lid ring and the collar provides a virtually shape-based closure, which is further strengthened by

The leading position of the edge portion of the cover ring further facilitates the insertion of the push-in cover from above, since again also the flexibility of said edge portion downwards occurs this time, and the export of the shoulder past the collar is facilitated.

The general design of the closure device is such that in the closure situation no free edges extend into the interior of the container, so that all corrosion is prevented.

3,74676

A further feature of the invention is that the outer edge of the lid ring is approximately equal to the material thickness of the lid below the horizontal plane formed by the free edge of the fold seam. This feature, together with a further feature of the invention, according to which the free edge of the push-in lid is formed as a horizontal flange covering the outer edge of the lid ring and the end edge is turned inwards, has the advantage that no component of the closure device extends beyond the plane. edge.

A further feature of the invention is that the push-in cover has a vertical wall portion between its shoulder and its base, which is smaller in diameter than the diameter of the contact surface. This facilitates the insertion of the insertion-15 cover, especially if this is done mechanically, in the sense of axial alignment before the cover is brought into the final closed position.

In a variant of this feature, the wall part can be conically directed inwards.

According to a further feature of the invention, the contact surface is transformed into a horizontal flange by forming an annularly rotating inwardly directed ball.

Finally, it is still conceivable to break up the rotating shoulder of the structure according to the invention into a plurality of individual platforms, preferably evenly spaced on the circumference.

The invention is described in more detail below by means of an embodiment, which is shown in the drawing.

The illustration of the drawing shows an enlarged section of a part of the closure device according to the invention, connected to the body of the container 30, in a sectioned side view.

In the figure of the drawing, the body of a sheet metal container, primarily a bucket or a similar packaging container, is marked with 1, the upper end of which carries the lid ring 3 by means of a folding seam 2.

Said lid ring 3 has a rim 5 extending from its inner wall 4 below the end of the fold seam 2, which, μ 74676 clearly shows in the drawing, is shaped to be carried towards the interior of the container. Through the edge 6 the edge part 5 becomes a vertical collar 7 ending in the outer edge 8. The drawing shows that the law of the outer edge 8 is in the region of the or-5 thesaurus, and the shown shape is shaped so that the outer edge 8 is approximately equal to the horizontal thickness 9 of the printable cover 10, which the upper edge of the fold seam 2 forms. It is clear from this, as is clear from the drawing, that no part of the shut-off device according to the invention exceeds the said horizontal plane 9.

In the closed position, the printable cover marked 10 has a contact surface 11 cooperating with the collar 7 of the cover ring 3, which abuts the downwardly rotating, outwardly directed shoulder 12. The shoulder is connected from below by a vertical wall portion 13, which, as the drawing shows, has a diameter of smaller than the contact surface 11. Thus, the guiding insertion of the printable cover 10 within the closing event is facilitated, while the cover 10, especially in mechanical cover devices, to some extent provides centering in the area of the opening to be closed.

As a modification of the above-mentioned features, the wall part 13 can also be shaped to be inwardly conical 25.

The bottom of the printable cover is marked with 14. In the present embodiment, the free edge of the printable cover 10 above the contact surface 11 is formed by a annularly rotating inwardly directed flange 15 into a horizontal flange 16, which, as the drawing shows, covers the outer edge 8 of the cover ring 3 and has an end edge 17 rounded inwards.

Finally, within the scope of a modification, it is still conceivable to break up the rotating shoulder 12 into a plurality of separate platforms (not shown in the drawing) wrapped around the circumference mie-35 plum at regular intervals

II

5,74676

As can be clearly seen from the drawing, in the closed position of the printable cover 10, the shoulder 12 engages the edge 6 of the cover ring 3 from behind and thus provides a shape-based locking, which secures the cover 10 to its closed position.

5 The lock increases, for example, due to the internal pressure caused by the filling or due to the pressure of the filling column due to external mechanical effects on the container, e.g. bounce when the container falls, and precisely because the rim 5 moves outwards from 10 inside the container. diameter. The session based on the force of the printable cover 10 in its closed position will thus increase.

Experience has shown that despite the firm closing position of the pressure-15 lid, it is relatively easy to open it, for example by gripping the edge 2 with a simple tool supporting the roller 17 from below, whereby the contact surface 11 slightly bends away from the vertical collar 7 of the cover ring. lever out.

The resilient property of the edge portion 5 of the cover ring 3, which is shaped to be inserted inwards, also continues to have a favorable effect when the printable cover 10 is brought out of its closed position. Namely, it has been found that said edge part 5, when the lid 10 is axially oriented in its insertion frame, pivots slightly downwards and allows space for the shoulder 12 of the lid 10 to pass past the collar 7.

In both cases, it can be assumed that the pivot point for the elasticity of the rim 5 is approximately 30 in the region A.

Finally, it can be seen from the drawing that in the embodiment shown here a free space a is formed between the twisted edge 17 of the lid 10 and the inner wall 4 of the lid ring 3, which can be suitably used when similar containers are to be stacked on top of each other, e.g. . In this case, there are e.g. keskittämismahdollisuus. Otherwise, by means of the plane 9, over which no part of the closing device according to the invention extends, it is in fact known in the known manner 5 that similar containers with a cylindrical body can be superimposed, the bottom seam resting in each case with a folding seam (z) in the upper body.

As already stated above, the construction of the closure device according to the invention offers the advantage that the printable lid is very secure in its closing position. Thus, the restriction on its insertion only in small diameter containers is omitted. Furthermore, containers with a lid structure according to the invention are particularly well suited both as packaging containers, which are subject to external mechanical loads, e.g. due to transport or the like, the effect develops an increased internal pressure (over-20 pressure) inside the tank.

Il

Claims (8)

7 74676 A closure device for a sheet metal container, preferably a bucket or similar packaging container, consisting of a lid ring (3) connected to the upper end edge of the container 5 body by a folding seam (2) and a push-in lid (10) cooperating with the lid ring opening. 4) an edge portion 10 (5) extending below the end of the folding seam (2), which is shaped to be inwardly extensible and turns into a vertical collar (7) terminating in an outer edge (8) whose law is in the region of the folding seam (2), and that the push-in cover (10) in the closed position is a contact surface (11) cooperating with the collar (7) of the cover ring (3), which is delimited downwards by an annularly rotating outwardly directed shoulder (12). Closure device according to Claim 1, characterized in that the outer edge (8) of the cover ring (3) is approximately equal to the material-20 thickness of the push-in cover (10) below the horizontal plane (9) formed by the free edge of the folding seam (2). Closure device according to Claim 1, characterized in that the free edge of the push-in lid (10) consists of a horizontal flange (16) which covers the outer edge (8) of the cover ring (3) and the end edge of which is screwed inwards (17). Closure device according to Claim 1, characterized in that the push-in cover (10) has a vertical wall part (13) between its shoulder (12) and its base (14), the diameter of which is smaller than the diameter of the contact surface (11). Closure device according to Claim 4, characterized in that the wall part (13) is conically directed inwards. Closure device according to Claims 1 and 3, characterized in that the transition of the contact surface (11) into a horizontal flange (16) takes place by forming an annularly rotating, inwardly directed ball (15). Closure device according to Claim 1, characterized in that the rotating shoulder (12) is distributed in a plurality of individual platforms, which are preferably evenly distributed on the fork. It 9 74676