POCKET SPRING CORE AND METHOD FOR PRODUCING THE SAME

Abstract

A pocket spring core as well as a method for producing a pocket spring core for use in the manufacture of mattresses or furniture upholstery. The pocket spring core has a plurality of springs, a number of which lie in a row one behind the other in respective flexible pockets, forming a bank of springs, and a number of adjacent banks of spring, which together form a supporting surface, are interconnected. The springs of at least one region of the supporting surface have different springing characteristics from the springs of the neighboring regions. At least one part of the individual banks of springs consists of bank portions with differing spring characteristics, the pocketed springs of each bank portion are identical, at least some of the neighboring portions of adjacent banks of springs are of different lengths and the neighboring portions of adjacent banks of springs are interconnected.

Claims

1. A pocket spring core, having a plurality of springs (4, 5), of which a plurality thereof arranged one behind the other in a row and each lying in a flexible pocket formed preferably of textile material form a bank of springs (1) and a plurality of adjoining banks of springs (1) which jointly form a lying surface are connected to one another, wherein the springs (4, 5) of at least one region of the lying surface are different in their spring behavior with respect to the springs (4, 5) of the adjacent regions wherein: at least a part of the individual banks of springs (1) consists of partial banks of springs (2, 3) with different spring behavior, the pocketed springs (4, 5) of the respective partial banks of springs (2, 3) are the same, at least some of the adjacent partial banks of springs (2, 3) of adjoining banks of springs (1) are of different lengths, the adjacent partial banks of springs (2, 3) of adjoining banks of springs (1) are connected to one another.

2. The pocket spring core according to claim 1, wherein a further partial bank of springs (2, 3) of a further bank of springs (1) is arranged between two partial banks of springs (2, 3) of two of the banks of springs 1, wherein the further partial bank of springs has a length that is different from the partial banks of springs (2, 3) adjacent on both sides of the further partial bank of springs.

3. The pocket spring core according to claim 1, wherein the partial banks of springs (2, 3) of adjacent banks of springs (1) overlap in the region of at least one pocketed spring (4, 5).

4. The pocket spring core according to claim 1, wherein the banks of springs (1) correspond in their length to the length of the pocket spring core formed as a rectangle.

5. The pocket spring core according to claim 1, wherein the adjacent banks of springs (1) are connected to one another in the region of the pocketed springs (4, 5).

6. The pocket spring core according to claim 1, wherein the adjacent banks of springs (1) are connected to one another by gluing or welding.

7. A method for the mechanical production of a pocket spring core according to claim 1, wherein first the partial banks of springs (2, 3) of different lengths are produced, then these adjoining partial banks of springs (2, 3) are connected to one another, then the partial banks of springs (2, 3) with different spring behavior in the region of their different lengths are joined together and connected to one another.

Description

[0023] Embodiment examples of the invention are described below using the attached drawings, wherein:

[0024] FIG. 1 shows a schematic illustration of a section of a pocket spring core according to the invention in perspective view,

[0025] FIG. 2 shows a schematic illustration of a section of another example of a pocket spring core according to invention in a plan view.

[0026] The figures each show a section in the region of a corner of a pocket spring core, having a plurality of pocketed springs 4, 5, of which several form a bank of springs 1 arranged one behind the other in a row, wherein the springs 4, 5 each lie in a flexible pocket, preferably formed from textile material. These pockets are connected to each other by webs 6.

[0027] Several of the banks of springs 1, which are arranged side by side and connected to each other, for example by gluing or welding, form a lying surface, wherein the length of the banks of springs 1 correspond to the length of the rectangular lying surface.

[0028] In the example shown, the individual banks of springs 1, disposed in parallel next to each other, are each formed by partial banks of springs 2, 3, whose spring behavior is different, which is illustrated in the figures by the different line widths of the pocketed springs 4, 5.

[0029] According to the invention, the partial banks of springs 2, 3 are of different lengths, in the examples by one spring 4, 5 each.

[0030] Since the length of the individual banks of springs 1 is the same, the connecting region of the partial banks of springs 2, 3 leads to meshing, i.e. according to the example in FIG. 2, a shorter partial bank of springs 3 is arranged between two longer partial banks of springs 3, so that the partial bank of springs 3 completing the bank of springs 1 projects between the two longer partial banks of springs 3 and, like the short partial bank of springs 3, is fastened to the longer partial banks of springs 3 on both sides in the region of a connection point 7. In addition, all adjoining banks of springs 1 are connected to each other in the waist area of their individual springs 4, 5 or at their pockets.

[0031] In the variant of the invention shown in FIG. 2, the lower bank of springs 1 forming an outer edge of the lying surface in the drawing plane is continuously equipped with the same springs 5 and thus forms an edge reinforcement, as also the angled row of adjoining springs 5 resulting from the last spring 5 of the adjoining banks of springs 1, wherein this edge reinforcement can be circumferential.

[0032] The springs 5 shown in the figures with larger line widths are harder in their spring characteristics than the springs 4 shown with smaller line widths.

[0033] The arrangement of the partial banks of springs 2, 3, depending on the desired spring behavior of the corresponding areas of the spring core, can be selected at will and only depends on the customer's requirements.