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 of textile material form an individual 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 adjacent regions wherein: at least some of the individual banks of springs (1) consist 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) have the same spring behavior, the adjoining banks of springs (1) comprise adjacent partial banks of springs (2, 3), 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) that have a the same spring behavior are directly connected to one another by gluing or welding, and the partial banks of springs having different spring behavior within an individual bank of springs are not directly connected to each other, and 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 (2,3) has a length that is different than a length of the partial banks of springs (2, 3) adjacent on both sides of the further partial bank of springs, so that at least one individual spring (4,5) of the further partial bank of springs (2,3) is adjacent springs (4,5) of a different spring behavior in the adjacent partial banks of springs and the at least one individual spring is directly connected to the springs of a different spring behavior in the adjacent partial banks of springs (2, 3).

2. 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.

3. A method for the mechanical production of a pocket spring core according to claim 1, comprising first producing the partial banks of springs (2, 3) of different lengths, then directly connecting these adjoining partial banks of springs (2, 3) to one another by gluing or welding.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

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

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

DETAILED DESCRIPTION OF THE EMBODIMENTS

(3) 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.

(4) 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.

(5) 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.

(6) According to the invention, the partial banks of springs 2, 3 are of different lengths, in the examples by one spring 4, 5 each.

(7) 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.

(8) 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.

(9) 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.

(10) 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.