WO2007131370A1 - Mobile bed substructure - Google Patents

Abstract

A mobile bed substructure comprises two longitudinal members (1) and transverse slats (2) running therebetween. The transverse slats (2) are divided transversely to the longitudinal direction and are guided in a box-profile portion (3). The longitudinal members are covered by a strap (20), which has a number of rows (24 to 26) of buttonhole-like slots (27). Correspondingly, one part (29) of the strap can run over the transverse-slat parts (2' and 2'') and another part (29') of the strap (20) runs beneath the transverse-slat parts, the free ends of the transverse-slat parts being accommodated in something akin to pockets (31) in the strap. This special configuration means that the mobile bed substructures can easily be assembled by the customer, and the assembled mobile substructure can be adapted to any form of bed.

Description

 Mobile couch substructure

The present invention relates to a mobile deck substructure for use in caravans, mobile homes or ship cabins according to the preamble of claim 1.

Most caravans, motorhomes or ship cabins do not use a real bed system. In most cases, the sofa will be converted into a bed in the evening. For this purpose, the pads made of foam, which are placed on a wood or chipboard. These solutions do not allow air to circulate and the resulting condensation settles in the upholstery fabric or on the plastic film forming the upholstery side. Accordingly, a mold and odor can not be avoided. But since the normal bed systems consist of a heavy slatted base with a relatively strong or heavy mattress, these solutions are in most cases out of the question.

- l - Exactly the same problems with mold and odor and condensation are also common in air mattresses. Accordingly, these form no alternative, also because they only allow a low level of sleep comfort.

From the documents EP-B-116237, EP-B-243383 and the patent application EP-A-1084664 mobile lying substructures are known which consist of two spaced and parallel to each other ■ arranged under pressure elastically deformable longitudinal beams, which are arranged in envelopes moldings are fixed, rest on the transverse slats, which are fastened connecting in or on the sheaths of the longitudinal bars. For the mobile sunbed are filled with foam longitudinal bars as they are the EP-B-243383 less suitable because they can not roll up to save space during the day, as is the condition mentioned in the applications mentioned.

Accordingly, mobile couch substructures have become known in which the longitudinal beams are designed as inflatable body. This applies in particular to EP-B-116237. Here, the longitudinal beams are provided with a welded plastic tape which is formed by means of transverse welds to pockets in which engage the ends of the crossbars. The longitudinal spars are not surrounded by a stabilizing shell and accordingly they must Transverse beams by means of stabilizers, which connect the spars transverse to their longitudinal directions are secured together. Depending on the width of the desired mobile deck substructures must be tailored according to the crossbars and also be provided at the same time adapted stabilizers.

From EP-A-1084664 a correspondingly improved variant is provided in which the transverse stabilization was realized by special design of the longitudinal bars. These multi-part longitudinal beams were surrounded by a textile shell and releasably connected to the crossbars, which are inserted in corresponding pockets of the shell. The crossbars were additionally stabilized by a longitudinally extending on each longitudinal spar extending with the sheath band provided, wherein the crossbar is held laced over the sheath and under the band.

Finally, from EP-B-422416 a mobile bed base known whose longitudinal beams are made of foam and provided with a fabric cover through which the crossing slats are guided in two places each. Since the ends of the transverse slats do not stick in pocket-shaped receptacles, the longitudinal spars need not take a straight course. Their relative position to the crossbars is also changeable. The beds in mobile homes or caravans and especially in ship quay huts must be adaptable to the given space. Accordingly, the lying areas are often not rectangular. While also in this area the lengths of such beds in the normal framework of 1.90 meters to 2 meters, the widths vary virtually arbitrarily. The problem of this extraordinarily different mass of beds, which require corresponding couch substructures, hardly allows a series production in the systems known today. In particular, lying substructures that have no rectangular shape, had to be realized as custom-made according to MassZeichnungen. This is not only expensive, but also problematic because the purchaser had to send the supplier corresponding sketches that are often inaccurate or unclear and correspondingly led to mobile deck substructures that did not fit on the particular bed.

It is therefore the object of the present invention to provide a deck base that is practically adaptable to any bed shapes and the customer can be assembled on site without appropriate tools.

This object is achieved by a mobile bed base with the features of claim 1. Prerequisite for

Production of such a sunbed substructure is the use a likewise inventive woven endless belt with the features of claim 10.

Further advantageous embodiments of the subject invention will become apparent from the dependent claims and their meaning and effect is explained in the following description with reference to the accompanying drawings.

The drawing is a preferred embodiment of the subject invention shown and described below. It shows:

Figure 1 is a mobile deck under construction in the side view with a view parallel to the longitudinal beams;

Figure 2 is a partial view of the mobile

Lying substructure from above on the lying surface;

Figure 3 is a detail view in the region of the holder of a crossbar on the longitudinal spar;

Figure 4 shows a portion of an endlessly woven belt for the preparation of the inventive seat base, while finally FIG. 5 ^• . represents a detail of this belt.

The mobile bed base consists, like a large number of such known mobile bed bases, of two longitudinal spars and a multiplicity of transverse slats resting on these longitudinal spars. These two spaced-apart longitudinal beams are formed as inflatable bodies, or from selbstinflatierenden bodies. These inflatable bodies are filled with a relatively low overpressure, which on the one hand is advantageous for lying comfort and on the other hand also allows the deformability of the longitudinal bars. This also applies in particular to longitudinal spars from self-inflating bodies. are made. These inflatable body, or self-inflating body are not shown in detail in the drawing, but only schematically and designated 10. While in inflatable body the corresponding valves are usually designed from Steckventile.n, self-inflating body are provided with screw valves that have a high density.

The inflatable bodies 10 have a weld seam on at least one side, but mostly around the circumference, wherein ^• . this weld seam 11 has a sufficient width, so that this ^' for fixing the, the. inflatable body 10 surrounding envelope, to serve. The envelope surrounding the inflatable body 10 is designated 12. The surrounding envelope is formed according to the invention at least on the top of an endless belt material. This endless belt material is cut to length according to the longitudinal spars, while the width of the belt material is designed so that it is able to encompass the inflatable body 10. Depending on whether the inflatable body 10 has only at the outer longitudinal edge of a weld 11 or circumferentially such a weld 11 sits, the encompassing strap along one, namely the outside of the inflatable body 10 can be sewn along, or even circumferentially on the weld 11 sewn. The circumferential sewing results in a higher relative resistance to displacement of the belt is denoted by 20 and in the sewn state forms at least on the upper side of the longitudinal spar, the surrounding shell. However, the two-sided sewing is not mandatory and in any case, it requires the presence of two-sided flap-shaped welds 11. If by means of the belt 20, the surrounding sheath 12 is formed, it will be advantageous to use a hem band sew the flap-shaped weld. This increases the strength and protects the inflatable body against damage, while at the same time projecting no disturbing relatively hard seam on the mobile deck substructure. ^{• ■}

With regard to the more accurate design of the belt 20 and its use is in particular to the figures 3, 4 and 5 directed. In the figure ^' 4, a portion of the inventive belt 20 is shown spread. Since this is a woven belt, this consists of a variety of warp and weft threads. The tissue is the sake of clarity and symbolically shown to relieve the drawing only in the upper right corner. The warp threads 21 extend over the entire length of the belt, while the weft threads are continuous only where they are not interrupted by buttonhole-like slots. With regard to the embodiment in this area, reference is made to FIG. The belt 20 is on the left half in the drawing at least two, in the example shown here, however, four rows of slots 23 to 26 on. The rows of slots 23 to 26 extend in the longitudinal direction L of the belt 20. The length of each buttonhole-like slot 27 is slightly larger than the width of the. In the areas of these rows of slots Cross bars 2, so that they can be passed through the buttonhole-like slots 27. The running direction of the weft threads is denoted by B. Between two adjacent buttonhole-like slots 27 of the second row 24 and the third row 25 through holes 28 are present. Since the belt is woven from a plastic yarn with high tear resistance, the through-holes 28 are baked with a mandrel-like, heated tool. In this area, the warp and weft threads 21, 22 merge with each other, so that the interruption of the threads caused by the weld joint no harm to the woven belt material. The strap portion extending between the second row 24 and the third row 25 is indicated at 29 and represents the portion 29 of the strap 20 crossing in the finished condition of the mobile bed base. The area between the third row 25 and the fourth row 26 is denoted by 29 'and represents that part of the belt 20, which passes under the crossbar in the finished state of the mobile deck substructure. The middle of the belt is marked with a dashed line 30. Preferably, the belt 20 is folded in the final state of the mobile bed base to be described. In this case, in the drawing right half of the belt will come to rest directly on the inflatable body 10, while the left in the drawing part of the belt is above. When the belt is fastened to the inflatable body 10 in the folded state, the region 31 between the center line 30 and the fourth row 26 of the buttonhole-like slots 27 forms a type of pocket 31 in which the free ends of the crossbars 2 are received.

FIG. 5 shows an enlarged detail of the belt 20 in the region of a row of buttonhole-like slots 27. Clearly, two adjacent buttonhole-like slots 27 extending in the longitudinal direction of the belt can be seen. Around one or two warp threads are missing in the area of these buttonhole-like slots 27. In the direction B transverse to the Gurtlinksrichtung run between the two here in a row adjacent buttonhole-like slots only the weft threads 22 through. On the one hand, weft threads 22 'are present in the area of the buttonhole-like slots 27, extending from the outer edge of the belt to the first or fourth row of buttonhole-like slots 27, these weft threads being designated 22' only in this figure. In the figure seen from the viewer left, run more weft threads 22 '' only between two in the transverse direction B of the belt 20 adjacent buttonhole-like slots 27 run back and forth.

The preferred use of the belt according to the invention for the production of the mobile bed base according to the invention is explained with reference to FIG. Here, a cross section through a longitudinal spar 1 is shown schematically. The longitudinal spar 1 is formed by an inflatable body 10, in the present case a self-inflating inflatable body 10. The inflatable body is formed by a lower sealing layer 16 and an upper sealing layer 17. The upper and lower sealing layers 17, 16 are joined together along the welds 11. Preferably, these welds are designed circumferentially and have a corresponding width, so that they can also be used to attach the surrounding shell 12. At least at one point between the lower layer 16 and the upper layer 17 in the weld 11, a valve 13 is welded. If the inflatable body 10, as shown here, designed as a self-inflating body, so there is a filler 15 between the lower sealing layer 16 and the upper sealing layer 17. It is usually an open-cell foam with large pores can be compressed very compactly and with a great restoring force it is able to expand after compression into its original form. With the valve 13 open, such inflatable bodies 10 can easily be rolled up and as soon as the longitudinal bars 1 formed by the inflatable body 10 are completely rolled up, the valves 13 can be closed and the longitudinal bars remain in the corresponding state. For reuse unrolling the mobile deck substructure, opens the valves 13, whereupon the self-inflating body self-inflate by the expansion of the filler 15, whereupon the valves 13 can be closed again.

As already mentioned, the inflatable bodies 10 are covered on both sides by a surrounding sheath 12. The surrounding shell is covered by a lower cover layer 14 in the example shown here. This cover layer may be a fabric which along the welds 11

- li - is sewn on or by a fabric which has been applied in the manufacture of the inflatable body 10 directly to the lower sealing layer 16. The same may of course also apply to the upper sealing layer 17. In any case, however, the belt 20 is mounted above the upper sealing layer 17. In the illustrated and preferred example here, the strap 20 is placed twice and connected in the region of the weld seam 11 with the inflatable body 10. The slot-free half of the belt lies directly on the inflatable body 10. The provided with the various rows 23 to 26, left in the drawing 4 half of the belt, is above the former half of the belt. Normally, of course, both belt half are sewn to the flap-shaped weld 11. In the figure 2, the crossbar 2 and a cross-member 2 is located. It can be seen that the crossbar 2 is crossed by a part 29 of the belt 20, while a second part 29 'crosses the crossbar 2, or is crossed by the crossbar 2. In the area between the crossbar 2 traversing part 29 'of the belt and extending to FaIt 33 area the crossbar 2 is in a kind of pocket 31, is recorded. Consequently, the transverse end of the bat is covered by the belt, so that the user can not injure himself, or the crossbar also does not hurt the bedding coming over it. The part 29 of the belt that crosses the crossbar 2 is secured with a securing element 40. This is preferably a plastic dowel, which is provided with a sawtooth-like ribbing and having a head. The securing element 40 passes through the through hole 28 which is mounted in the part 29 of the belt 20. The crossbar 2 is correspondingly provided with a through hole. In principle, it would of course also be possible to provide a plurality of parts 29 of the strap which cross the crossbar 2, this essentially depending on the width of the longitudinal spar 1.

Finally, reference is again made to Figures 1 and 2. While Figure 1 shows the assembled mobile

Lying substructure in a side view with a view into the

Longitudinal, is in the figure 2, the mobile

Lying substructure shown in the view from above. On both sides a longitudinal spar 1 is ever visible. Depending on the intended use, the mobile bed base is placed directly on a bedstead 0 or on a floor. The two longitudinal beams 1 are connected only via the transverse slats 2 with each other.

According to the invention, the transverse slats 2 are transverse to the

Longitudinally divided into the two transverse leaf parts 2 'and 2' '. The two mutually facing ends of

Querlattenteile 2 'and 2' 'are in a rail of a

Box profile 3 sliding. The box section 3 has on the bottom, with respect to the installation position, at least one longitudinal slot, but preferably two slots, which form two elongated holes 4. In each cross-member part 2 'and 2''is mounted on the longitudinal center axis each have a bore into which a guide means 5 is pressed. This may be, for example, plastic or metal pins, which have a corresponding head, which is larger in diameter than the width of the slots 4.

Thanks to the configuration described here, it is now possible to adapt the inventive mobile bed base any bed shape. Even a certain curvature of the longitudinal bars is easily possible. Of course, the longitudinal bars also do not need to be parallel to each other. The inventive mobile bed base is particularly suitable to offer it in the mail order. As already mentioned, the longitudinal beams can be rolled up and the transverse slats 2 or the transverse slat parts 2 'and 2 "and the box section sections 3 can all be shipped as individual parts in a box. The buyer can now insert himself the crossbars accordingly and press through the through holes 28, the securing means 40. He then puts the transverse leaf parts 2 'and 2''in the corresponding box section sections and beats the guide means 5, the longitudinal holes 4 crossing into the corresponding holes in the transverse slat parts. once Assembled, the mobile decking needs to be laid together, or rolled up, not to be dismantled. The flexibility of the longitudinal bars allows it to easily, that the entire bed base can be rolled up in the assembled state.

By no means mandatory, but advantageous to avoid injury to the edges of the longitudinal beams, or to avoid injury to the bedding, you will sew on the lap-shaped welds 11 with the existing here parts, the surrounding shell 12 each a encompassing hem band 50.

List of reference numbers:

0 bed frame.

1 longitudinal spar, inflatable body

2 crossbars 3 box section

4 longitudinal holes

5 guiding means

10 inflatable body

11 Welded seam, flap-shaped 12 surrounding sheath

13 valve

14 lower cover layer of the casing 1

15 filler

16 lower sealing layer 17 upper sealing layer

20 belt

21 warp threads

22 wefts

23 first series slots 24 second series slots

25 third row slots

26 fourth row slots

27 buttonhole-like scarfleeve

28 through holes 29 Part of the strap that crosses the crossbar

29 'part of the strap that passes under the crossbar

30 middle of the belt

31 pockets

40 securing means 50 hem band

L longitudinal direction of the belt 20

B transverse direction of the belt 20

Claims

claims 1. Mobile lying base with two spaced-apart, inflatable, longitudinal members forming bodies and a plurality of crossbars, which are indirectly connected to the longitudinal beams, characterized in that each longitudinal spar is sewn to a woven longitudinally extending, the longitudinal spar partially encompassing belt, the at least three spaced, parallel longitudinally of the belt extending rows of slots are provided, wherein in each row of longitudinal slots, the slots are mounted so that a transverse to the longitudinal direction of the belt crossbar in each row is able to pass through a slot, so that each Crossbar at the free ends of the bag-like belt is covered, then crosses a portion of the belt and then traversed under a portion of the belt, wherein the slats crossing the end part (29) of the belt (20) is anchored by a fuse element anchored in the crossbar, while the crossbars across are divided to the longitudinal direction and the two transverse leaf parts are slidably mounted in a connecting profile section 2. Mobile sunbed according to claim 1, characterized in that all the slots are woven in the belt. 3. Mobile bed base according to claim 1, characterized in that each crossbar in the area in which it passes under a part of the belt with a belt passing through the means is held in a fixing. 4. Mobile sunbed according to claim 1, characterized in that the securing element is a plastic dowel with a head. 5. Mobile bed base according to claim 1, characterized in that each strap is sewn along both longitudinal edges of an inflatable longitudinal spar. 6. Mobile deck underlay according to claim 1, characterized in that the profile section consists of a longitudinally slotted at the bottom box section, the inner mass maximum and approximately equal to the outer dimensions of the transverse slats share in the area where they are stored in the profile section. 7. Mobile bed base according to claim 1, characterized in that each inflatable longitudinal spar is formed from a self-inflating body. 8th . Mobile bed base according to claim 1, characterized in that each longitudinal bar along the outer Longitudinal and broad edges have a circumferential protruding hem to which the belt is sewn and is surrounded by a hem band. 9. Mobile deck undercarriage according to claim 1, characterized in that at the lower edge of the box profile two aligned one behind the other longitudinal holes (4) are present and each cross-member part has a guide means (5) which passes through a respective longitudinal hole and the displaceability of the cross-member parts in the box section limited. 10. Mobile deck undercarriage according to claim 1, characterized in that the belt has twice the width of the longitudinal spar and is double stitched with the slots sewn up on the longitudinal spar. 11. Woven endless belt for the creation of a mobile deck base according to claim 1, characterized in that the belt has three parallel rows of parallel to the warp direction extending woven buttonhole-like slots, wherein in each row each with respect to the Kettfädenverlaufsrichtung at the same height a buttonhole-like slot starts and ends and that all slots are the same length. 12. Woven endless belt according to claim 10, characterized in that run between two button-like slots in the same row only weft threads. 13. Woven belt according to claim 11, characterized in that between two transverse to the belt longitudinal direction buttonhole-like slots, a through hole is attached.