JPS6362428B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Consisting of a sheet metal strip having at least two welding projections on its end face and curved approximately in a U-shape,
This invention relates to a retaining web that retains side grips.

A retaining web of the type described above, which retains the side grips, is fixed to the container by lug welding. For this purpose, the welding protrusion must be pressed against the container wall with sufficient pressure. For this purpose, the retaining web is inserted into a welding mold. This welding mold usually has two movable welding fingers which serve as counter-receiving for the welding projections and press the retaining web against the container wall. The welding between the retaining web and the container wall is effected at points on the retaining web at the locations where the welding projections are provided by resistance welding. In this case, the respective container diameter requires a retaining web adapted to the radius of the container, and
When the holding web is welded, the container wall is tensioned. This can sometimes lead to deformation of the container. Furthermore, the load capacity of known holding webs in the direction parallel to the container wall is relatively low, which can lead to damage to the side grips during use or especially when assembling large containers. . Additionally, welding molds are quite complex due to their moving parts. In addition, this movable welding finger has the disadvantage that the welding process is time-consuming due to the necessary closing and opening movements of the welding finger. Furthermore, the service life of the welded type is shortened by the presence of movable parts.

The problem of the invention is that for welding the holding web and the container wall, only one welding mold without moving parts is required, and the holding web only needs to be fitted into this welding mold. , this results in a short welding time, the holding web has a relatively high strength, and the holding web is configured in such a way that it is suitable for a range of container diameters and for automatic feeding into the welding mold. The object of the present invention is to provide a retaining web of the type described in .

In order to solve this problem, in the configuration of the present invention,
Both legs of the U-shaped retaining web are each folded back towards the outside in a tongue-like manner, with the outer part of the leg extending approximately parallel to the inner part and configured in a tongue-like manner. A front free end of the outer portion is bent inwardly and is substantially in line with a connecting web joining the legs, and the free end of the outer portion is offset relative to the bonding web in a plane located approximately at right angles to this portion;
The welding protrusions provided on the connecting web of both legs and the free end are arranged to be offset from each other in the plane.

The welding projections, which are located on a line corresponding to the contour of the container wall, are offset from one another in height due to the special shape of the holding web, so that special displaceable welding fingers or the like are required. The welding protrusion can be supported linearly by the welding die without the need for additional welding. The welding die can be configured as a simple telescoping die, in which case the welding lugs are directly supported, so high pressure is applied to them, which reduces the welding time,
The welding effect is improved.

The welding projections on the tongues of the retaining web are arranged offset from one another at the height of the container, thereby creating a supporting effect on the container, so that the retaining web can be moved in a direction perpendicular to this retaining web. can withstand relatively large forces acting on it. Since the tongue is elastic, the weld projection spacing can be varied. This allows the retaining web to be installed in different container diameters without loading the container walls. When using universal retaining webs and thin container walls, with retaining webs that are not adapted to the container diameter, the container can become so loaded that the lid can no longer be fitted satisfactorily.

Limited by the rigid spacing structure of the retaining web according to the invention, the material thickness can be reduced by about 20%. In this case, it is completely guaranteed to fully take on all the forces that arise.

According to a further proposal of the invention, the holding web is fixed to the container with four welding projections, which further increases the strength and stability.

The tongue-shaped design of the retaining webs also provides a high lateral stability, which is particularly important when transporting the container material within the factory.
Furthermore, because the holding web is symmetrically constructed, it is possible to feed the holding web automatically into the welding mold. This is because the individual parts do not touch each other.

According to another embodiment of the invention, the free ends of the outer parts of the legs are once again folded inwards, so that the free ends again extend parallel to the first leg part. , and can touch this leg portion. With this configuration, even when a large external force occurs, the opening of the tongue portion is prevented from becoming undesirably small. This is especially important for enameling. This is because if the tongue has a sufficient diameter, no enamel bridge will be formed. Due to the increased strength, the material thickness can be reduced, which is advantageous during enameling.

Next, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, the container wall of, for example, a pan is designated by the reference numeral 1. A retaining web 2 constructed according to the invention is fastened to this container wall 1 by four welding projections 3-6. The U-shaped retaining web 2 has a connecting web 7, which connects two side webs 8, 9, each forming a tongue, to one another. The connecting web 7 has approximately the curvature of the container wall 1.

The side webs 8, 9 are tongue-shaped or box-shaped. The side webs 8, 9 have a rearwardly projecting portion 10, a portion 11 extending approximately at right angles to this portion 10, a portion 12 extending again approximately parallel to the portion 10, and a free section 10. It has an end portion 13. This free end 13 is correspondingly aligned with the connecting web 7 in plan view. The free end 13, as shown in FIG.
It extends below the connecting web 7 and has a welding projection 6 . Since this part of the free end 13 as well as the rear side of the welding projection 5 is freely accessible from the rear, the retaining web 2 can be fitted with a correspondingly constructed mold with a surface in direct contact with the rear side of the welding projection 5, 6. It can be fitted in. The retaining web 2 is generally symmetrically constructed.

To weld the container to the holding web 2, the holding web 2 simply needs to be inserted into a constructed welding mold. The container wall 1 is then placed on the holding web 2, positioned accordingly, and pressed onto the holding web 2 by means of a tool. Welding is performed immediately after this. On the one hand, the welding mold can be manufactured simply and, on the other hand, wear can be reduced to a minimum, since no moving parts need to be provided in the welding mold anymore. The welding mold can thus be constructed as a simple snap-in mold, and it is also possible to provide the welding mold with, for example, replaceable welding point supports. This results in a significantly longer service life of the welding die and the already mentioned time savings when inserting the retaining web. Furthermore, the welding effect is significantly improved. This is because there are no movable parts that impair the welding effect.

The height of the leg is set relative to the recess in the side grip in such a way that this recess is guided by a form-locking connection in the side grip and thus receives the forces that occur when handling the pan.

4 and 5 show the assembly of the side grip 15 with the container wall 1 by means of a retaining web 2 constructed according to the invention. The side grip 15 has a cutout 16 into which the box-shaped side webs 8, 9 engage. Furthermore, two springs 17 shown in FIG. 7 are arranged within the cutout 16. Instead of this spring shape, a spring 18 shown in FIG. 8 may be used. Rear end 19 of spring 18
are curved upwards to form lateral guides. The front end 19 of each spring 17, 18 is bent downward and engaged with a notch 23 provided in the side grip 15. As a result, the springs 17, 18 are fixed relative to the side grip 15. The retaining web 2 engages behind the hump 20 of the springs 17, 18 with both side webs 8,9. The springs 17, 18 are tightened when the side grip 15 is pushed in, and are somewhat relaxed again after passing the hump 20. As a result, spring 1
7, 18 are subjected to a moment which loads these springs 17, 18 in the direction of the container wall 1. However, since the spring 17 is fixed at its front end 19 to the side grip 15, the moment causes the side grip 15 to be pressed against the container wall 1 without any play, so that the side grip 15 is positioned on the container wall 1 without any play. It will be done. Furthermore, the side grip 15 is pressed firmly against the holding web 2 with the wall 21 of the recess 16, so that the side grip 15 is positioned without play both at right angles and parallel to the container wall 1. Since the springs 17 or 18 have a relatively large spring distance even when extremely high forces occur, manufacturing errors or unavoidable enameling errors will result in a reliable installation of the side grips 15. It has no effect on fixation.

It is advantageous if the springs 17 are connected to one another via a central web 22 (see FIG. 6). This central web 22 is in this case locked in a recess 23 provided in the side grip 15, as shown in FIG. be done. The central web 22 has the advantage not only of the locking thereby created with the side grips 15, but also of the possibility of handling two springs 17 at the same time, i.e. the pre-assembly of side grips 15 and springs 17. This has the advantage of being significantly simpler. The spring 17 is inserted into the recess 16 as well as the recess 23 before the side grip 15 is inserted into the retaining web 2, and then the side grip 15 is inserted into the retaining web 2. The provision of humps 20 on the springs 17, 18 also makes possible a flawless removal of the side grips 15. For removal, the side grips 15 need only be pulled away from the container wall 1 with great force. This large force is set to be significantly larger than the force generated when handling the pan. When withdrawn, the spring 17 is tightened again and slides under the side webs 8,9.

[Brief explanation of drawings]

1 is a side view showing a container wall and a retaining web fixed to the container wall, FIG. 2 is a perspective view of the retaining web, and FIG. 3 is a top view of the retaining web shown in FIG. 4 is a top sectional view of the side grip assembled by the retaining web and two springs; FIG. 5 is a sectional view of the side grip shown in FIG. 4, seen from the side. , 6, 7 and 8 are diagrams showing different shapes of springs for fixing the side grip to the container. 1... Container wall, 2... Holding web, 3-6...
Welding protrusion, 7... Joining web, 8, 9... Side web, 10-12... Part, 13... Free end, 14... End range, 15... Side grip, 16... Notch, 17 , 18...spring, 19
... end, 20 ... hump, 21 ... wall, 22 ...
...Central web, 23...notch.

Claims (1)

Claims: 1. A holding web for holding side grips consisting of a sheet metal strip curved approximately in a U-shape with at least two welding projections on its end face, in which both legs of the U-shaped holding web 2 the outer portions 12 of the legs extend approximately parallel to the inner portions 10, said outer portions 12 being tongue-shaped; The front free end 13 of the outer part 12 is bent inwardly and lies approximately in line with the connecting web 7 joining the two legs, and the free end 13 of the outer part 12 is bent towards the inside. 12, the welding projections provided on the connecting web 7 and the free end 13 of the two legs are offset relative to the connecting web 7 in a plane lying approximately perpendicular to the plane. Retaining webs for holding side grips of a container, characterized in that they are arranged offset from each other at the sides of the container. 2. Claim 1, in which the free end 13 has an end region 14 bent inwards by 90°
Retaining web as described in section. 3. The height of the leg is measured and the leg is constructed in such a way that the leg is guided by form-locking in the recess of the side grip.
Retaining web as described in section. 4 The leg of the holding web 2 projects into the notch 16 of the side grip 15 and is held within this notch 16 by springs 17, 18, the front ends of which are inserted into the side grip 15. The springs 17 and 18 are then latched to the hump 20.
2. A retaining web according to claim 1, having a V-shaped configuration. 5. Retaining web according to claim 4, in which the two springs 17, 18 are connected to each other via a central web 22. 6. The holding web according to claim 4, wherein the central web 22 is held in the notch 23 of the side grip 15.