DE102022116967A1 - FOLDABLE LOUNGING OR SEATING FURNITURE WITH COVER TENSIONING SYSTEM - Google Patents

Abstract

Foldable reclining or seating furniture (1) with a foldable cover (2) serving as a lying or sitting surface and first tension rods (3) for holding the cover (2) in place, as well as at least two transverse to the first tension rods (3) on these mountable, second tension rods (4), for tensioning the cover (2), characterized in that at least one second tension rod (4) can be fastened to a plurality of first tension rods (3) via adjusting screws (5), such that the distance between this second Tension rod (4) and the first tension rods (3) on which it is mounted can be changed by turning the adjusting screws (5) in such a way that the cover (2) receives the desired tension.

Description

The invention relates to a foldable lounger or seat with a foldable cover serving as a lounger or seat and a special tensioning system for this cover according to the preamble of claim 1.

TECHNICAL BACKGROUND

There is a wide range of foldable reclining or seating furniture that is or can be covered with a foldable cover. These include, for example, folding chairs, but also mobile camp beds, which are also known as “camping beds” or “army beds”. The structure of such foldable furniture with a foldable cover is usually similar, which is why the prior art is explained below using a piece of furniture in the form of a normal, mobile camp bed as an example.

Such a camp bed 1 is in the 1 shown. The base frame of this field bed 1 is formed by the first tension rods 3 and the feet 12, which are preferably articulated to these tension rods. In order to obtain a suitably long lying surface of the camp bed 1, but still be able to fold the camp bed into a relatively small space when dismantled, two first tension rods 3 are usually attached directly one behind the other in the longitudinal axis of the camp bed in the direction of their longitudinal axes, each by means of a joint 13 connected with each other. This joint 13 allows the first tension rods 3 to be folded down relative to one another.

The feet 12 are also preferably by means of a joint 13 (see 2 ) attached to the first tension rods 3. This in turn ensures that the camp bed can be folded into a small space and that the camp bed can be set up quickly. The feet 12 of a camp bed 1 are usually arranged in an X shape (see 1 ), whereby a pair of feet preferably consists of two rods that intersect in an X-shape and in turn form a joint at their intersection, whereby on the one hand the Most camp beds, like the one in 1 shown have three pairs of feet. One each near the front of the camp bed and one in the middle area of the camp bed.

When delivered, such a camp bed 1 usually already has a cover 2, which is designed in such a way that it forms first loops 14 on its transverse sides, into which the first tension rods 3 are inserted and preferably connected to the cover.

The construction or assembly of such a field bed 1 is therefore usually carried out in such a way that the field bed, which is initially folded into a small space, is unfolded and the legs are placed on the floor in the X position shown. This is usually done without tools, since the joints 13, especially when all parts are connected to one another, usually only allow a limited pivoting movement. The first tension rods 3, the feet 12, the joints 13 and the foldable cover 2 with its loops 14 and 15 thus form a substantially coherent system which does not require any additional assembly steps other than unfolding or unfolding and setting up. Due to the shape and arrangement of the feet 12 or the first tension rods 3 as well as the design of the cover 2, the cover 2 already has a certain tension after it has been set up and the camp bed 1 generally has a certain stability, which is however necessary for the intended use of the camp bed are not sufficient. After the camp bed has been set up for the first time, cross bars (preferably one cross bar per end side), the second tension rods 4, must be attached to the two end faces in order to achieve additional stability of the camp bed and additional tension of the cover 2.

These second tension rods 4 are mostly external parts that are pushed through the second loops 15, which the cover 2 provides on its end faces. The second tension rods 4 must then be attached to the first tension rods 3. This is usually done by a locking system such as a pin 101 with a complementary pin receptacle 102. 2 shows an example of such a locking system, with a second tension rod 4 each carrying two pins 101, which are so far apart from each other that, when the camp bed 1 is unfolded, they fit into the complementary pin receptacles 102, which are attached to the end faces of the first tension rods 3 .

2 shows such an attachment of a second tension rod 4 to the first tension rods 3, although the reference 2 is not shown here for a better overview, which of course does not correspond to real events. As already mentioned at the beginning, the cover 2 forms a second loop 15 on its end faces, which surrounds the second tension rod 4. In order to be able to insert the pins 102 shown into the pin receptacles 102, the cover 2 must be stretched considerably - usually using leverage. This usually requires considerable effort. The This can often only be achieved by averagely trained people with the help of additional aids and/or leads to various other disadvantages.

This assembly process must be carried out on both end faces, which is very complex or complicated and requires a lot of effort. This increases the risk of damaging part of the camp bed during this assembly process or of injuring the person assembling it, especially through getting trapped.

However, depending on the choice of frame material, choice of cover material, cover manufacturing and the stretch of the cover material, the tension of the assembled cover varies. Due to these diverse influencing factors, selecting the “correct” tension of the cover is very difficult to achieve.

• - Ist die Spannung zu stark, wird die Montage kraftaufwendiger und es ist sogar eine Beschädigung des Materials möglich.
• - Ist die Spannung nicht ausreichend, hängt das Textil bei Belastung durch.

When choosing the tension of the cover, there are often two extremes that need to be avoided:

• - If the tension is too strong, assembly will require more effort and damage to the material is even possible.
• - If the tension is not sufficient, the textile will sag under load.

Ordinary camp beds are usually just a compromise between the two factors mentioned and there is only a certain tension in the cover after assembly. This generally results in a system that is only slightly flexible, has no possibility of adjusting the tension of the cover and is often felt to be too soft or too hard and is also associated with complicated, force-intensive assembly and the dangers explained at the beginning.

In addition, with most reclining or seating furniture designed in this way, the cover “wears out” over time, meaning that the sitting or lying behavior of the furniture is no longer perceived as pleasant and/or the risk of damage to the cover increases. Re-tightening the cover is not possible with the camp bed 1 explained at the beginning as an example.

THE UNDERLYING TASK

In light of what has been said above, the task is to provide a means by which the construction of such a foldable reclining or seating piece of furniture is simplified.

THE SOLUTION ACCORDING TO THE INVENTION

According to the invention, this problem is solved with the features of the first main claim.

For this purpose, a foldable lounger or seat with a foldable cover that serves as a lounger or seat is proposed.

The “foldability” of a piece of furniture was already explained at the beginning with the description of the state of the art and here primarily means the fact that the piece of furniture is foldable and can be folded and unfolded repeatedly without causing damage.

The “foldable cover” is ideally a textile or a film (e.g. a truck tarpaulin) or leather, which can be folded in half at least twice when unstretched.

The furniture has - as described at the beginning - first tension rods for holding the cover in place, as well as at least two second tension rods that can be mounted transversely to the first tension rods for tensioning the cover. Here, the first tension rods are attached to and/or in the cover before the second tension rods. The first tension rods are preferably already “pre-assembled” when the furniture is delivered, i.e. attached to and/or in the cover; preferably in such a way that a first tension rod has already been inserted into a loop of the cover, but is not firmly fixed to the cover. After the first tension rods have been attached, the second tension rods are also fastened in and/or to the cover and provide an additional tension force to the tension force already applied by the first tension rods, which corresponds to “holding tension”. This “keeping it stretched” is preferably created essentially by unfolding the furniture and the tensioning force exerted on the cover by the first tension rods.

This reclining or seating furniture is generally characterized in that at least one second tension rod can be attached to a plurality of first tension rods via adjusting screws, such that the distance between this second tension rod and the first tension rods on which it is mounted can be adjusted by turning the adjustment screws can be changed in such a way that the cover receives the desired tension.

Thus, at least one second tension rod is attached to at least two first tension rods by means of adjusting screws, the number of adjusting screws preferably being the number of corresponds to the first tension rods connected directly to the respective second tension rod.

If an adjusting screw is now turned, the distance between the respective first tension rod and the section of the second tension rod that is equipped with this adjustment screw changes. This is preferably done by an adjusting screw encompassing or reaching through the respective second tension rod and permanently pressing the end of the adjustment screw against the respective first tension rod and with each rotation of the adjustment screw the second tension rod along the thread of the adjustment screw upwards or downwards (depending on the direction of rotation). is moved and so the distance between the fixed first tension rod and the second tension rod which can be moved via the thread can be varied.

This makes the assembly of the second tension rods on the respective first tension rods considerably easier; especially since the tension of the cover does not yet have to have the final tension after connecting the first and second tension rods. A piece of furniture can be designed in such a way that the respective second tension rod is fastened in or on the cover and placed transversely to the respective first tension rods without considerable effort. Preferably, there is at most a slight clamping effect between the respective second tension rod and the respective first tension rods in order to hold the respective second tension rod in position. The adjusting screws are then inserted, which connect the first and second tension rods to one another, and only by turning these adjusting screws and the associated change in distance is the final tensioning force of the cover achieved.

This significantly reduces the risk of injury to the person assembling or damage to parts of the furniture, as the assembly process is possible with reduced effort. In general, this also creates a flexible system of furniture in which the tension of the cover can be individually adjusted. This also makes it possible to re-tighten the cover if, as explained at the beginning, it “wears out”.

PREFERRED EDUCATION OPPORTUNITIES

A particularly preferred embodiment of the furniture is that at least two first tension rods have a thread-free bearing hole on at least one of their end faces, preferably in the form of a blind hole, which forms a pivot bearing for the headless end of an adjusting screw. The adjusting screw can be supported exactly in this bearing hole on the first tension rod. The adjusting screw must and can always be “deep enough” to prevent it from tipping sideways. The adjusting screw can either be supported on its end face, very preferably, on the bottom of the bearing hole, or the screw has a plate in the form of a washer, via which it is supported on the free end face of the first tension rod.
Here, the bearing hole is preferably designed so that its height is at least 3 mm, preferably at least 15 mm and expediently at most 40 mm.

In addition, it is particularly preferred if at least one second tension rod has at least two threaded through holes, each of which is penetrated by an adjusting screw when the furniture is assembled and which is mounted on the end face of a first tension rod. These through-threaded holes enable the aforementioned displacement of the second tension rod along the thread of the adjusting screw when the adjusting screw is rotated.

It is also particularly preferred if said second tension rod is made of wood or plastic or metal and the through-threaded hole is formed by a threaded bushing inserted into the second tension rod. This threaded bushing can be designed in various ways and can be inserted into the second tension rod in various ways.

For example, the threaded bushing can be screwed in, pressed in, injected or introduced in some other way. In general, it is only necessary that an internal thread is formed in the threaded bushing. This represents a simple and stable way to hold the adjustment screw securely, regardless of the material used for the second tension rod, and to be able to guide the tension rod safely and long-lasting along the thread of the adjustment screw. This primarily prevents the thread from wearing out or tearing out prematurely.

A further preferred embodiment is that the two through-threaded holes of a second tension rod are so far apart from each other in adaptation to the dimensioning of the cover that the adjusting screws passing through them, after being inserted into the bearing holes of two first tension rods opposite one another on the cover, the two Keep the first tension rods at a distance from each other in such a way that the cover is kept stretched in the direction of the longitudinal axis of the second tension rod with the tension required for the intended use of the furniture.

In addition, it is particularly preferred if the first tension rods are hollow profiles, preferably made of metal, ideally made of aluminum or an aluminum alloy or steel, or plastic, which are closed at the end by a plug in which a bearing hole for an adjusting screw is formed. The “bearing hole” is preferably the thread-free bearing hole already mentioned. This means that the entire piece of furniture can be made stable, cost-effective and low in weight.

In addition, it is particularly preferred if the second tension rods are hollow profiles, preferably made of metal, ideally made of aluminum or an aluminum alloy or steel, or plastic, which are closed at the end by a plug through which a through-threaded hole extends transversely to its insertion direction, which is in inserted state is aligned with corresponding holes in the wall of the hollow profile. This also allows the furniture to be stable and lightweight. It should be emphasized that it is also possible and often even practical to make the second tension rods from simple structural steel.

FIGURE LIST

• The 1 shows an ordinary field bed according to the state of the art in a three-dimensional view.
• The 2 shows the usual method of attaching a second tension rod to the first tension rods according to the prior art.
• The 3 shows a piece of furniture according to the invention with a reference clamping system in a three-dimensional view.
• The 4 shows the preferred embodiment of the reference clamping system in the starting position in a sectioned side view.
• The 5 shows the preferred embodiment of the reference tensioning system in a fully tensioned position in a sectioned side view.
• The 6 shows the preferred embodiment of the reference clamping system in the starting position in a top view.
• The 7 shows the preferred embodiment of the reference clamping system in a fully clamped position in a top view.
• The 8th shows the second tension rod with plug and adjusting screw in a three-dimensional detailed view.
• The 9 shows the adjustment screw and the plugs of the first and second tension rods in a three-dimensional individual view.

PREFERRED EMBODIMENT

The 3 until 9 show the preferred exemplary embodiment of the furniture 1 according to the invention or the associated reference clamping system 16.

First shows 3 the overall view of the furniture 1 according to the invention, in comparison to the prior art ( 1 ) the two adjusting screws 5 with their actuating elements 9 are particularly noticeable. The exact differences that arise from the new reference clamping system compared to the prior art are shown and explained in more detail, especially in the other figures. It should be noted that the basic structure of the furniture 1 according to the invention corresponds to a large extent to what was already described at the beginning in the “Technical Background” chapter, so that what was said there also applies here. This will therefore not be listed again here. For this reason, the differences to this prior art will be described below, which are due to the new reference clamping system 16 in the front side area of the furniture 1.

The preferred embodiment, which is in the 3 until 9 is shown, has the reference clamping system 16 only on one end face, while the opposite end face preferably has a locking system according to the prior art. However, it is also possible for both end faces to have a new type of reference clamping system 16; especially if the furniture cover has to have a lot of tension.

The starting point of the reference tensioning system 16 is, as already explained at the beginning, the unfolded and erected frame made up of first tension rods 3, feet 12 articulated on these tension rods in an X arrangement and the cover 2 attached to the first tension rods 3. The first tension rods 3 are like this mentioned by the first loops 14 of the cover 2.
The first tension rods 3 are preferably designed as a rectangular, preferably square, hollow profile.

In order to fully assemble the furniture 1, the second tension rods 4 must now be assembled, with only the assembly of the second tension rod 4, which has the reference tensioning system 16, being discussed in more detail below.

For this purpose, the second tension rod 4 is preferably pulled through the second loop 15 (or the second loops), which is located on the front side of the cover 2, so that the second tension rod 4 is pulled laterally by essentially the same amount from the cover 2 or . whose loop 15 protrudes. The second tension rod 4 is thus arranged perpendicular to the two first tension rods 3. The second tension rod 4 is also preferably designed as a rectangular, particularly preferably as a square, hollow profile, which preferably has two through holes each, which are preferably located in the end region of the tension rod 4.

The end faces of the second tension rods 4 are preferably closed by means of a special second plug 11, this plug 11 preferably being designed in such a way that it has a threaded through hole 7, which is formed by a threaded bushing 8 (see 9 ). It should be mentioned here that the plug is of course only used when the tension rods are designed as hollow profiles and not with solid material tension rods. If the plug 11 is now pushed into the second tension rod 4 at the front, it is preferred that the axis of the through hole of the hollow profile is essentially aligned with the axis of the threaded bushing 8 (see 8th ). The adjusting screw 5 can now be screwed into the thread of the threaded bushing 8 or the through-threaded hole 7. This adjusting screw 5 comprises a threaded rod, which is preferably at least 35 mm long and has a thread, and an actuator 9 for conveniently turning the adjusting screw (see 9 ).

With such a structure of the second tension rod 4, it is also preferred that the two first tension rods 3 are closed at the end with a plug, the first plug 10. The preferred embodiment of this first plug 10 is in 9 clearly visible. The plug 10 has a thread-free bearing hole 6 centrally.

The second tension rod 4 is now closed at the front by a second plug 11, which has a threaded through hole 7, preferably in the form of a threaded bushing 8. Through the through holes in the second tension rod 4, the adjusting screws 5 can be screwed into the through-threaded hole 7 or the threaded bushing 8 so that they reach through the second tension rod 4. The through holes of the second tension rod 4 must be spaced apart from one another in such a way that the axes of the adjusting screws 5 are at least essentially aligned with the axes of the bearing holes 6 of the two first tension rods 3 in the unfolded state of the furniture 1 (see 6 ). The adjusting screws 5 can thus be inserted into the bearing holes 6, preferably in such a way that they touch the bottom of the bearing holes 6. For this purpose, the adjusting screws 5 must be screwed in further via the through-threaded hole 7, preferably in the form of the threaded bushing 8.

If the adjusting screws 5 are now on the bottom of the bearing hole 6, the adjusting screws 5 can be turned further, whereby the adjusting screws rotate loosely in the bearing hole 6 and the threaded bushing 8 and thus the entire second tension rod 4 is moved along the thread of the adjusting screw 5 and the distance between the first and second tension rod can be varied. The distance between the first and second tension rod can be increased until the second tension rod 4 has reached the upper end of the thread of the adjusting screw 5 or a corresponding stop (see 7 ). In this position, the cover 2 is maximally tensioned, with the tension of the cover 2 increasing continuously as the distance between the first and second tension rods increases. It should be mentioned here that tensioning the cover only works in this way because the cover is also attached to another second tension rod on the opposite side of the second tension rod described.

The 4 and 5 show this clamping process of the reference clamping system 16 even more clearly in a sectioned side view. Here the embodiment of the tension rods 3 and 4 as a hollow profile and the attachment of the plugs 10 and 11 and their embodiment become clear. This shows 4 the “starting position” in which the second tension rod 4 still rests on the first tension rod 3 or its plug 10. Even in this “starting position”, the reference 2 can already experience tension through the reference tensioning system 16, with this first tension preferably being achieved by clamping the second tension rod 4 on the end faces of the first tension rods 3 with little effort on the part of the installer.

It should be mentioned again in general that the first and second tension rods of the furniture can also be designed as solid profiles, for example as solid profiles made of wood. A threaded bushing can be inserted into such a full profile regardless of this and is therefore no longer part of the plug. These plugs are of course not necessary when using solid profiles. However, it is also possible that when using hollow profiles for the first and/or second tension rods, the threaded bushings are not part of the respective plug, but are also individually inserted into the hollow profile.

In addition, the materials of the tension rods are such that the first tension rods and the second tension rods are essentially preferably made of the same material. When designed as a solid profile, the tension rods are then preferably essentially made of wood and, when designed as a hollow profile, preferably essentially made of metal or plastic.

VARIOUS

As already mentioned, the solution according to the invention can be used for all types of furniture. The term “reclining or seating furniture” is to be understood accordingly broadly.

In its preferred, narrower meaning, it really only refers to furniture that is supported by at least part of the weight of a person sitting on it when used as intended. The invention is particularly advantageous where it is used to build a piece of furniture and in particular a bed; a bed on which a person lies completely for several hours when used as intended.

As described, it is particularly favorable if the first tension rod consists of several rod sections which are foldably connected to one another via a joint. Alternatively, solutions can be considered in which several rod sections are inserted into one another at least in sections in order to jointly form a first tension rod. Alternatively, the first tension rods can be telescopic into one another simply or multiple times for the purpose of reducing the size during transport.

The connection options mentioned can also be used for the second tension rod without this detracting from the invention.

REFERENCE SYMBOL LIST

1

Furniture/cot

2

Relation

3

first tension rod

4

second tension rod

5

Adjusting screw

6

Bearing hole (thread-free)

7

Through threaded hole

8th

Threaded bushing

9

Actuator

10

Plugging the first tension rod

11

Plugging the second tension rod

12

Foot

13

joint

14

first loop of the cover

15

second loop of the cover

16

Reference clamping system

101

Pen

102

Pen holder

Claims (10)

Foldable reclining or seating furniture (1) with a foldable cover (2) serving as a lying or sitting surface and first tension rods (3) for holding the cover (2) in place, as well as at least two transverse to the first tension rods (3) on these mountable, second tension rods (4), for tensioning the cover (2), characterized in that at least one second tension rod (4) can be fastened to a plurality of first tension rods (3) via adjusting screws (5), such that the distance between this second Tension rod (4) and the first tension rods (3) on which it is mounted can be changed by turning the adjusting screws (5) in such a way that the cover (2) receives the desired tension. Furniture (1) after Claim 1 , characterized in that at least two first tension rods (3) have on at least one of their end faces a thread-free bearing hole (6), preferably in the form of a blind hole, which forms a pivot bearing for the headless end of an adjusting screw (5). Furniture (1) after Claim 2 , characterized in that at least a second tension rod (4) has at least two threaded through holes (7), each of which is penetrated by an adjusting screw (5) when the furniture (1) is assembled, which is located on the end face of a first tension rod (3). is stored. Furniture (1) after Claim 3 , characterized in that said second tension rod (4) is made of wood or plastic or metal and the through-threaded hole (7) is formed by a threaded bushing (8) inserted into the second tension rod (4). Furniture (1) according to one of the preceding claims, characterized in that the end of an adjusting screw (5), which - in the direction away from the cover (2) - protrudes from the second tension rod (4), has an actuating member (9), preferably in the form of a toggle, star or other rotary handle, the lever arm or Diameter is preferably so large that the tension required for complete clamping can be applied without tools. Furniture (1) according to one of the preceding claims, characterized in that the two through-threaded holes (7) of a second tension rod (4) are so far apart from each other in adaptation to the dimensions of the cover (2) that the adjusting screws (5) passing through them , after inserting them into the bearing holes (6) of two first tension rods (3) opposite each other on the cover (2), keep the two first tension rods (3) at a distance from one another in such a way that the cover (2) is in the direction of the longitudinal axis the second tension rod (4) is kept clamped with the required tension. Furniture (1) according to one of the preceding claims, characterized in that the first tension rods (3) are hollow profiles, preferably made of metal, ideally made of aluminum or an aluminum alloy or steel, or plastic, which are closed at the end by a first plug (10), in which a bearing hole is formed for an adjusting screw (5). Furniture (1) according to one of the preceding claims, characterized in that the second tension rods (4) are hollow profiles, preferably made of metal, ideally made of aluminum or an aluminum alloy or steel, or plastic, which are closed at the end by a second plug (11). , through which a through-threaded hole (7) extends transversely to its insertion direction. Furniture (1) according to one of the preceding claims, characterized in that the cover (2) forms first tunnels and/or first loops (14) through which first tension rods (3) pass. Furniture (1) according to one of the preceding claims, characterized in that the cover (2) forms second tunnels and/or second loops (15) through which at least one second tension rod (4) passes.

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