DE102010035617B4 - Rung bag and method of making a pillbox - Google Patents

Abstract

Stake pocket made of at least two components (1, 2) in the form of shells, with - the shells (1, 2) are joined together by means of a tongue and groove connection (7); the shells (1, 2) are welded together; the stake pocket (3) is designed from two identical half-shells (1, 2) which are connected to one another by being rotated by 180 °.

Description

The invention relates to a Rungentasche, which consists of at least two welded components in the form of shells, and a method for producing such a Rungentasche. Pony bags of the type mentioned are in particular used in the commercial vehicle sector.

Systems for securing cargo in the commercial vehicle sector, in which the cargo area has openings in which load securing elements, in particular stanchions, can be used, are known in many designs. So shows DE 20 2004 009 044 a device for securing the load against slipping. In this case, the loading surface in a grid arranged openings, also called Rungentaschen, on, can be used in the holding elements. The openings consist of downwardly at least partially closed pipe sections, which are firmly connected to the underloading the cargo carriers, preferably welded. The outer dimensions of the stanchions are slightly less than the inner dimensions of the pipe sections, so that the stanchions can easily slide into and out of the stanchion pockets.

The disadvantage here is that pipe profiles compared to rolled sheets usually have a higher base price per kilogram with otherwise the same steel quality. This is particularly true for seamlessly drawn tubes that have no ridge inside and therefore particularly well suited for use as a stanchion pocket and thus for the insertion of stanchions. As far as the existing Rung bag from a piece of pipe subsequently edited, for example, must be provided with an additional hole for receiving a Runge security, incur considerable additional costs, since this is at least one additional step is required.

Out US 20100096874 A1 is a stanchion bag ( 14 ) known from at least two components in the form of shells. The 3D and 3E pertain to stake pockets that exterminate via a tongue and groove connection. This tongue and groove connection is a guide which makes it possible to move one half-shell element in relation to the other half-shell element. A welding of the tongue and groove joint having components is not provided and would prevent the desired at this point displaceability of the components.

DE 10 2009 013 222 B3 discloses a consisting of two half-shells tubular hollow body whose wall thickness is smaller than 3 mm. Although it can be identical elements in the half shells, but these elements are not connected by a tongue and groove connection, but via locking elements ( 56 . 57 . 58 ). The Holkörper formed from the half-shells is intended for use in the exhaust system of motor vehicles. An insert of the hollow body as a stanchion pocket and thus for securing cargo is not provided.

Further disclosed DE 10 2009 013 222 B3 a method for producing the hollow body consisting of two half-shells. This process involves the automated production of components of an exhaust system using complex stamping and bending tools. Although in the proposed method, a pipe section ( 50 ) made of two half-shells, However, no tongue and groove connection is produced, but rather are produced locking elements and locking tabs.

Out DE 10321863 A1 For example, a pipe and a method of manufacturing a pipe are known. This tube is made of a substantially flat, metallic sheet, wherein the longitudinal edges of the sheet are connected to each other by form-fitting interlocking elements. The proposed pipe is used for example in automotive exhaust systems. A use as Rungentasche or for securing cargo is not provided.

Also known and widely used in the field are stanchion bags in which welded assemblies made from sheet metal blanks are used instead of tube sections. As a rule, initially blanks of two mirror-symmetrical individual parts are produced, these then bent C-shaped and then welded together, so that the finished stanchion pocket has the same dimensions as the stanchion pocket made of a pipe section. Such stanchion bags are used in particular for stanchions with square cross-section.

Although such Rungentaschen are cost-effective in terms of their material price and with modern manufacturing equipment such as laser cutting centers and CNC Abkantern very economical to manufacture, but the two items must be welded together to form a tubular part. This can easily lead to inaccuracies, since the two individual parts, which are placed against each other before welding, can move relative to each other. Also, burr edges in the area of the abutting contact surfaces can prevent the exact positioning that is required to comply with the tolerances of the welding assembly, which generally amount to a few tenths of a millimeter. Also deformations due to the welding temperatures have to be considered.

None of the prior art known as stanchion pockets thus consists of two identical half-shells, which have a tongue and groove connection and also offset by 180 ° to each other and welded together.

The invention has for its object to offer a Rungentasche and a method with which on the one hand, the compliance of the predetermined tolerance dimensions of the Rungentasche can be guaranteed and on the other hand allow a cost-effective production.

This object is achieved by the shells are welded together in a made of two shells and joined together by a tongue and groove connection stance pocket and the stanchion pocket ( 3 ) from two equal half-shells ( 1 . 2 ) is designed, which are connected by 180 ° rotated against each other.

The components are formed as half-shells, wherein one of the half shells with at least one spring and the other with a complementary, groove-like recess, in the following groove, is provided. At least one groove and one spring each on a stake pocket half-shell are arranged so that the groove is on one cheek of the component and the spring on the other. This makes it possible to assemble two identical pillbox half shells to a stanchion pocket by the half-shells are connected by 180 ° rotated against each other. This eliminates manufacturing and storage costs for the management of two different items. Derived from this, other grooves and springs can be used.

The tolerances of the individual parts are designed so narrow that even with the most unfavorable, just within the tolerance range actual dimensions of the individual parts in particular the tolerance of the specified in the welding assembly internal pipe dimension, in abutting contact surfaces of the two components, in any case.

Preferably, the spring is configured with bevels at its corner regions, wherein the groove preferably has recesses in its corner regions, so that the assembled half shells do not touch each other in the corner regions of the tongue and groove and especially the smallest burr edges in these regions have no disturbing effects on compliance the tolerance of the Rungentasche can have.

The requirements for dimensional accuracy during welding are relatively high. However, this results in a simplification of the distance then when tongue and groove of the stanchion pocket have a limited to the bottom of the groove contact surface, which does not exceed 33% of the height of the stanchion pocket.

Embodiments have also proven advantageous in which tongue and groove in plan view have a rectangular, trapezoidal or spade shape, wherein the contact surface are formed by a flat or curved contact surface.

It is also advantageous if the tolerances of spring width and groove width are coordinated so that a displacement of the components in the direction perpendicular to Rung pocket bottom only in a range is possible, which is smaller than the tolerance range of optionally contained in the components, each other in relation standing holes, which are usually arranged in the weld assembly on a common center line.

• – Zuschnitt der Halbschalen in ihrer abgewickelten Form aus metallischen Werkstoffen, wobei die eine Halbschale mindestens eine Nut und die andere Halbschale mindestens eine mit der Nut kompatible Feder aufweist, wobei der Zuschnitt von Nut und Feder jeweils eine Anlagefläche für einen Kontakt zwischen Nut und Feder aufweist,
• – dreidimensionales Verformen der Zuschnittteile zu Rungentaschen-Schalen;
• – Zusammenfügen der Schalen in einer formschlüssigen Verbindung, wobei die Anlagefläche der Feder die Anlagefläche der Nut berührt, und darüber hinaus eine Differenz von Feder-Maximalmaß abzüglich Nut-Minimalmaß sowie Feder-Minimalmaß abzüglich Nut-Maximalmaß einen Toleranzbereich einschließt, der kleiner ist als der Toleranzbereich des die formschlüssige Verbindung begründenden Maßes der aus den Schalen bestehenden Schweißbaugruppe;
• – Verschweißen der Halbschalen zu einer Rungentasche.

The invention also relates to a method for producing a tongue-and-groove jointed stanchion pocket consisting of at least two identical shells twisted 180 ° to each other in the form of shells and in which the stanchion pocket is made using the following method steps becomes:

• - Cutting the half-shells in their unwound form of metallic materials, wherein the one half shell has at least one groove and the other half shell at least one compatible with the groove spring, wherein the blank of tongue and groove each having a contact surface for a contact between the tongue and groove .
• - Three-dimensional deformation of the blank parts to stake pocket shells;
• - Assembling the shells in a positive connection, wherein the contact surface of the spring contacts the contact surface of the groove, and moreover a difference of maximum spring size minus minimum groove dimension and spring minimum dimension less groove maximum dimension includes a tolerance range which is smaller than that Tolerance range of the form-fitting connection-establishing measure of the existing from the shells welding assembly;
• - Welding the half shells to a stanchion pocket.

The invention will be explained in more detail with reference to an embodiment illustrative drawing.

The figures of the drawing show:

1 : two identical components of a stake pocket in perspective and exploded view;

2 : the front view of the juxtaposed components;

3 : the side view of the two juxtaposed components;

4 : A plan view of the juxtaposed components.

1 shows a stake pocket 3 according to the invention in exploded view, wherein the two components, namely two equal half-shells 1 and 2 can be seen. After assembling the half-shells 1 and 2 results in a configuration of the stanchion pocket 3 according to the 2 to 4 , The half-shells 1 and 2 have in cross-section about a C-shape, consisting of two cheeks 15 and 16 as well as a back wall 17 composed. The one free edge 15.1 the cheek 15 has two springs 5 on. Correspondingly at the same height are compatible grooves 4 on the other free edge 16.1 the cheek 16 intended. Both half shells 1 and 2 are sheet metal parts.

In the construction of the stake pocket half shells 1 and 2 , which are preferably identical, at least equal, the cut dimensions of the settlement in the range of groove 4 and spring 5 so dimensioned that the observance of the tolerance range of the dimensions M3 and M3 'of the finished stanchion pocket contained in a corresponding welding group drawing is guaranteed.

In addition, the corner areas of the springs 5 with bevels 8th and the corner areas of the grooves 4 with recesses 9 provided so that when pushing together the half shells 1 and 2 Contact and contact surfaces 12 and 13 from groove 4 and spring 5 in the groove bottom.

Advantageously, embodiments have proven in which tongue and groove in plan view have a rectangular, trapezoidal or spade shape, wherein the groove bottom is formed by a flat or curved contact surface.

The flat developments of the half-shells 1 and 2 are made in their shape from a steel sheet having a sufficient thickness, preferably by a cutting laser, in compliance with the predetermined cutting tolerances by the laser automatically performs a cut along the previously entered into the computer of the laser cutting machine contour lines in a known manner. An analog cutting technique with a waterjet cutter is used when cutting aluminum sheet.

The cut-to-size parts are shaped three-dimensionally with a folding machine in such a way as to give half-shell half-shells 1 and 2 arise. Both half shells have at least one spring 4 and at least one groove 5 as shown in the figure.

The two half shells 1 and 2 Be including the tongue and groove connection 7 pushed into each other until the contact surfaces 12 . 13 the feather 5 and the groove 4 touch each other or rest on each other. The dimension M1 of the spring is greater than the dimension M2 of the groove, so that in fully pushed together state only the contact surfaces 12 and 13 from groove 4 and spring 5 touch and between the two components 1 and 2 otherwise edge regions a gap 6 remains.

The width M4 of the spring 5 is chosen so that the sum of the widths M4 all on the cheek 15 contained springs 5 less than 33% of the height H of the stanchion pocket 3 accounts.

Furthermore, the width M4 of the spring 5 and the width M5 of the groove 4 so that their tolerance field forms a clearance fit. Here is the size of the tolerance field of groove 4 and spring 5 so narrow that after joining the half-shells 1 and 2 from the bore semicircles 11 resulting holes 10 within the hole for this 10 provided tolerance range of the finished stanchion pocket 3 to be maintained bore tolerance. The opposite holes 10 lie on a common alignment line and serve to accommodate security bolts, not shown.

After joining, you get one from the half shells 1 and 2 existing rat pocket 3 , The thus in a defined manner to each other positioned half shells 1 and 2 are welded together by means of a welding device, wherein the weld preferably from the outside on the Rungentasche 3 is stored to the later insertion of stanchions (not shown) in the stanchion pocket 3 not to be a hindrance.

LIST OF REFERENCE NUMBERS

1

half shell

2

half shell

3

Runge pocket

4

groove

5

feather

6

gap

7

Tongue and groove

8th

chamfer

9

recess

10

drilling

11

Bore semicircle

12

Contact surface of the spring

13

Contact surface of the groove

14

15

cheek

15.1

free edge

16

cheek

16.1

free edge

17

rear wall

M1

Height of the spring

M2

Depth of the groove

M3

Rohrinnenmaß

M3 '

Rohrinnenmaß

M4

Width of the spring

M5

Width of the groove

H

height

Claims (9)

Rung bag made of at least two components ( 1 . 2 ) in the form of trays, wherein - the trays ( 1 . 2 ) by means of a tongue and groove connection ( 7 ), - the trays ( 1 . 2 ) are welded together, - the Rungentasche ( 3 ) from two equal half-shells ( 1 . 2 ) is designed, which are connected by 180 ° rotated against each other. Rung pocket according to claim 1, characterized in that by means of a tongue and groove connection ( 7 ), the dimension (M1) of the spring ( 5 ) is greater than the dimension (M2) of the groove ( 4 ), wherein the tolerance range resulting from the difference between the spring maximum dimension minus the minimum groove dimension and the spring minimum dimension minus the maximum groove dimension is smaller than the tolerance range of the measure of the welded rat pocket that establishes the positive connection. Rung bag according to claim 1 or 2, characterized in that the spring ( 5 ) at their corners via chamfers ( 8th ). Rung pocket according to one of claims 1 to 3, characterized in that the groove ( 4 ) in their corner areas via recesses ( 9 ). Rung pocket according to one of claims 1 to 4, characterized in that the half shells ( 1 . 2 ) via at least one groove ( 4 ) as well as at least one spring ( 5 ) feature. Rung pocket according to one of the preceding claims, characterized in that groove ( 4 ) and spring ( 5 ) the stanchion pocket ( 3 ) each one on the groove bottom limiting contact surface ( 12 ; 13 ), which is 33% of the height (H) of the stanchion pocket ( 3 ) does not exceed. Rung pocket according to one of the preceding claims, characterized in that groove ( 4 ) and spring ( 5 ) in plan view have a rectangular or spade shape, wherein the contact surface is formed by a flat or curved contact surface. Method for producing a stanchion pocket ( 3 ), which consists of at least two identical half-shells welded together by 180 ° relative to each other (US Pat. 1 . 2 ) in the form of shells, characterized in that the stanchion pocket ( 3 ) is produced using the following method steps: • cutting the half-shells ( 1 . 2 ) in its unwound form of metallic materials, wherein the one half-shell ( 2 ) at least one groove ( 4 ) and the other half shell ( 1 ) at least one with the groove ( 4 ) compatible spring ( 5 ), wherein the blank of groove ( 4 ) and spring ( 5 ) each have a contact surface ( 13 ; 12 ) for a contact between tongue and groove, • three-dimensional deformation of the cut parts to stake pocket shells ( 1 and 2 ); • joining the shells ( 1 and 2 ) in a positive connection, wherein the contact surface ( 12 ) the feather ( 5 ) the contact surface ( 13 ) of the groove ( 4 ), and moreover a difference of spring maximum dimension minus groove minimum dimension and spring minimum dimension minus groove maximum dimension includes a tolerance range which is smaller than the tolerance range of the positive connection establishing dimension of the from the shells ( 1 . 2 ) existing welding assembly; • welding the half shells ( 1 . 2 ) to a stake pocket ( 3 ). Method according to claim 8, characterized in that during the assembly of the half shells ( 1 . 2 ) a positive connection only in the region of the groove ( 4 ) and the spring ( 5 ) and, moreover, after the positive assembly, a gap ( 6 ) remains between the half-shells.

Images