DE202005001760U1 - Mattress core comprises spiral springs with middle ring halfway up for connection in adjoining rows to spiral wires on diametrically opposite sides of rings - Google Patents

Abstract

The mattress core comprises spiral springs (2) connected to spiral wires (4). The springs have a middle ring (1) halfway up so that the springs are connected in adjoining rows to the wires on diametrically opposite sides of the rings. Adjacent spiral springs are connected into groups of two or four springs through staple webs fixed onto end rings (3).

Description

The The invention relates to mattress cores made of wire coil springs, which halfway up Having center rings and adjacent rows of coil springs on this Center rings by means of spiral wires connected to each other.

The spiral wires connect the coil springs in adjacent rows to two diametrically opposite Side of the respective center rings, so that a flexible, elastic Medium - connection level arises.

The Spiral springs have a barrel or a double Bonnell shape symmetrical to the middle rings and have open or closed end rings.

In addition, neighboring Spiral springs with the help of clip webs attached to the coil spring end rings are attached, advantageously connected to doublets or Quadruplets become. These groups of two or four can be prefabricated and then for connection to the spiral wires in the mattress core Association inserted become.

These Summary to groups prevents a very reliable one Falling or snagging of adjacent coil springs even in extreme, punctual load and claim of the mattress. The abstract impaired the point elasticity the mattress core hardly, since it is at a middle ring diameter from e.g. 6 cm only around areas 6 cm × 12 cm or 12 cm × 12 cm whose elasticity is due to the summary is only slightly reduced.

• 1. Sie sind sehr viel punktelastischer und mindestens vergleichbar mit Taschenfederkernen aufgrund der fexiblen Mittel – Verbindungsebene.
• 2. Sie sind sehr preiswert mit der bewährten Spiraldraht-Verbindungstechnik auf programmierbaren Automaten herstellbar.
• 3. Sie benötigen weniger Stahldraht als bisherige Kerne.
• 4. Die neutrale, flexible Mittelebene macht sie anpassungsfähiger bei großer Höhenverstellung der Kopf- und Fußteile (z.B. bei einem Motorrahmen).
• 5. Eine Zonenaufteilung des Kerns ist möglich durch Variation der Drahtstärke und der Windungszahl der Sprialfedern und durch Zusammenfassung in Dublets und Quadrublets der Spiralfedern.

Due to their construction, these mattress cores have the following novel, advantageous properties in comparison to conventional spiral wire-bonded Bonnell or light spring cores:

• 1. They are much more point elastic and at least comparable to pocket spring cores due to the fexible middle connection plane.
• 2. They are very inexpensive to produce with the proven spiral wire connection technology on programmable machines.
• 3. You need less steel wire than previous cores.
• 4. The neutral, flexible center plane makes it more adaptable with high height adjustment of the head and foot parts (eg with a motor frame).
• 5. A zoning of the core is possible by varying the wire size and the number of turns of the Sprialfedern and summarized in doublets and quadrublets of the coil springs.

State of technology

The Previous mattress cores made of wire coil springs are continuous equipped with Bonnell or light feathers, if necessary with omission each second spring in series, or as pocket spring cores.

The closed, continuously connected to the surfaces with spiral wires Construction is sturdy and shows only an overall stiff, uniform Surface elasticity.

The on the gap set Lightweight feather version tends to cowl under overstretching the connecting spiral wires.

The more elastic pocket spring cores are disproportionately expensive, on average by one Factor three to five across from the cores processed with sprial wire.

characters

1a and 1b Top view and cross section through an edge section of a mattress core, consisting of barrel-shaped coil springs 2 symmetrical about their center rings 1 to which spiral wires 4 the connection to adjacent spiral spring 2 Create rows.

2a and 2 B As 1a and 1b with different clip webs ( 5 . 5 ' . 5 ' . 15 ' ), attached to the outer coil spring end rings 3 . 3 ' for connecting two or four groups of coil springs 2 in linear 5 or cross 5 ' . 15 ' or ring 5 ' shape

3 Various clip webs made of wire

3a and 3b Top view and cross section through a center point-welded 8th Doppelhaken- 5 ' Cross for connecting a quadruplet of end rings 3 with loop 6 attachment

3c Cross section through a linear double hook 5 for connecting a doublet of spiral spring 2 end rings 3 with loops 6

3d Doppelhaken- 5 ' Cross connected by central twist 9

3e Ring-shaped clip bridge 5 ' by cramping connected to a quadruplet of spiral spring 2 end rings 3

4a and 4b View below and cross section through a cross-ring-shaped bracket bar 15 ' made of plastic attached to four coil spring end wrestle 3 with clip-in devices 16

4c View under a linear clip bridge 15 for two spiral spring end rings 3 with clip-in devices 16

figure description

The 1 shows barrel-shaped coil springs 2 connected with spiral wires 4 at middle rings 1 , thus forming an elastically flexible middle connection plane.

The barrel shape can be symmetrical around the center ring 1 arranged double Bonnell shape of the coil springs with smaller end rings 3 . 3 ' as the middle rings 1 be replaced.

In 2 to 4 are different clip web systems 5 . 5 ' . 5 ' . 15 . 15 ' around the coil spring end rings 3 . 3 ' shown which the coil springs 2 connect to groups of two or four. The combination of different coil spring shapes and clip webs can also be used for hardness zone training or edge stabilization.

The Examples shown each represent only one of several types of use represents.

In 1a are the plan view and the cross section through an edge cutout of a mattress core, consisting of barrel-shaped coil springs 2 shown a symmetrical structure around the center rings 1 to have. coil springs 2 from adjacent rows are made with spiral wires 4 connected, which on diametrically opposite sides in each case two middle rings 1 with two to four spiral wire 4 Wrap turns and connect them in a mobile way.

On This way becomes a neutral but quite elastic flexible Middle level produced as the main connection of the coil springs. This creates a flexible and by the on both sides of the middle Connection plane movable and elastic coil spring parts of one very point elastic mattress core with very good adaptability all body contours.

The outer flat end rings 3 . 3 ' can be open, with advantageously inwardly bent ends, or even closed.

The middle ring 1 Diameter can be 4 to 8 cm and the end ring 3 Diameter 3 to 6 cm amount. The number of turns on both in 1 and 2 freestanding coil spring parts varies between two and four, with the lateral stability and elasticity increasing with the number of turns and decreasing with the wire thickness, which can be chosen for different hardness zones between Ø = 1.2 to 2.6 mm, depending on Total height of the coil springs 2 from 10 cm to about 16 cm.

The elastically flexible middle connection plane is lowered by a factor of two under pressure load of the mattress as the pressure-loaded mattress surface, since both free, symmetrical about the center ring 1 yield arranged coil spring parts.

Of the Distance between the spiral spring doublets or quadruplets can if necessary, be a little bit larger as within the coil spring groups.

at the mattress cores presented have the coil springs no bias like the pocket spring cores. This has the advantage that the pressure, for compressing the coil springs, e.g. by a third of Height is needed by a factor of two to three is less (depending on the bias from 1/4 to 1/3 of the original height), what a higher elasticity and adaptation to the rough contour of the body allows.

at greater Height, elasticity and adaptability the mattress core is at very large punctual or improper load the Risk of falling over or catching the free outer coil spring parts.

This can be prevented by clip webs connecting two or four sets of helical springs, as in the constructions of 2 to 4 shown.

In 2a and 2 B are in principle the same mattress core cutout as in 1 shown, with additional, different clip webs 5 . 5 ' . 5 ' . 15 ' for connecting two (doublets) and quad (quadruplets) groups of coil springs 2 , attached to the outer end rings 3 . 3 ' ,

The staple bars can be made of wire in linear 5 , Cross 5 ' or ring 5 ' Shape or made of plastic in cross-ring 15 Shape (or linear shape, in 2a not drawn).

In 3 and 4 these clip webs are shown in detail.

3a and 3b show the plan view and the cross section through a centrally spot-welded 8 Doppelhaken- 5 ' Cross made of steel wire for connecting a quadruplet of spiral springs with loop 6 at the ends for attachment to the coil spring end rings 3 ( 3 ' ).

In 3c is the cross section through a linear double hook 5 from steel wire to the verbin a doublet of coil spring end rings 3 ( 3 ' ) again with loops 6 shown.

3d shows one by twisting 9 the wires assembled double hook 5 ' Cross.

In particular, the in 3a to 3c clipboard 5 . 5 ' Steel wire versions enable fully automated, very cost-effective production and installation of double-hook 5 . 5 ' Clip webs (similar to a paper staple machine).

For this purpose, the double-hook 5 . 5 ' Webs with vertically protruding hooks over the spiral spring end rings 3 ( 3 ' ) and two or four Umknicker form the loops 6 from the hooks around the end ring 3 ( 3 ' ) Wires.

The spiral spring doublets or quadruplets can thus be prefabricated and then inserted into the spiral wire 4 Connection machines are used.

In 3e is a ring-shaped 5 ' Bracing bar made of steel wire crimped to a quadruplet of coil spring end rings 3 ( 3 ' ) is movably mounted.

Of the Ring can by spot welding closed or made open.

Also Here, an automated production and installation is provided.

4a and 4b show the view below and the cross-section through a cross-ring 15 ' plastic clip with four clip-in eyelets 16 for mounting on four spiral spring end rings 3 ( 3 ' ).

In 4c is the view under a corresponding linear stapling bar 15 Plastic version for a spiral spring end ring 3 Dublet shown.

Both can be fully automatically attached again. The part can be out inexpensive bulk plastics.

As with eg 400 spiral springs 2 in a mattress core 200 or 400 staple web parts are required for the quadruplet or Dublet compounds, represent the 1 to 2 Euro-cents manufacturing costs (estimated) is a cost factor.

The cost of the clamp bars in 3 made of wire are much lower.

In summary the following can be said:

In the 2 and 3 shown constructions represent an optimum of point elasticity, safety of use and affordability, which can be produced with the proven spiral wire connection technology to date. The great essential advantage results from the middle ring (neutral fiber) connection level by means of the spiral wires and the automatable, small parcellular additional connection of two or four-coil spring groups, which ensures security against kinking and entanglement, even with strong point load.

With normal proper use by normgewichtige users is the in 1 shown construction absolutely safe to use, especially in barrel-shaped coil springs with a total of seven turns, flat Endringen and good steel wire quality.

One More (seven) zones mattress core can be with the o.a. variations easy to make.

Claims (7)

Mattress core, consisting of wire coil springs, which are connected to spiral wires, characterized in that a) the coil springs ( 2 ) halfway up a middle ring ( 1 ) and b) the coil springs ( 2 ) in adjacent rows on diametrically opposite sides of the middle rings ( 1 ) with spiral wires ( 4 ) are connected. Mattress core of wire coil springs according to claim 1, characterized in that the spiral springs ( 2 ) a) have a barrel shape that is symmetrical about the center ring ( 1 ), and b) open or closed outer end rings on both sides of the spiral spring ( 3 . 3 ' ) exhibit Mattress core of wire coil springs according to one of claims 1 and 2, characterized in that adjacent coil springs ( 2 ) by clip webs ( 5 . 5 ' . 5 ' . 15 . 15 ' ) attached to the end rings ( 3 . 3 ' ) are connected to two (doublets) or four (4) coil spring groups (quadruplets). Mattress core of wire coil springs according to at least one of claims 1 to 3, characterized in that the clip webs ( 5 . 5 ' ) consist of wires with hooks at the ends surrounding the coil springs ( 2 ) End rings ( 3 . 3 ' ) to loops ( 6 ) are bent and the wires have the form a) of a linear double hook ( 5 ) for the spiral spring ( 2 ) Doublets or b) of two crossed double hooks ( 5 ' ) for the quadruplets, which are spot-welded at the crossing point ( 8th ) or by twisting ( 9 ) together are connected. Mattress core of wire coil springs according to at least one of claims 1 to 4, characterized in that the clip web for the spiral spring ( 2 ) Quadruplets of a wire ring ( 5 ' ), which cramps ( 7 ) with the spiral spring ( 2 ) End rings ( 3 . 3 ' ) connected is. Mattress core of wire coil springs according to at least one of claims 1 to 5, characterized in that the clip webs ( 15 . 15 ' ) made of plastic, in linear ( 15 ), Cross-ring-shaped ( 15 ' ) or ring-shaped arrangement with clip-on eyelets ( 16 ) on the spiral spring ( 2 ) End rings ( 3 . 3 ' ) are clipped. Mattress core of wire coil springs according to at least one of claims 1 to 6, characterized in that the coil springs ( 2 ) one symmetrically around the middle ring ( 1 ) arranged double Bonnell shape, wherein the end rings ( 3 . 3 ' ) has a smaller diameter than the middle ring ( 1 ) to have.