DE1922218A1 - Cushions for sitting or lying furniture - Google Patents

Description

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SöoietS Anonymous Beige (! 'Exploitation de la Navigation A§rienne.

Bruxelles / Belgium

concerning
Cushions for seating or lounging furniture

The invention relates to a cushion for seating or reclining furniture or for "use as a mattress."

In a known cushion of this type, the filling is made of foam such as latex, polyether, polyester or from fibers, especially wool, horsehair, glass fiber or synthetic fiber. These fillers are generally soft and permeable to the surrounding air Case included.

In order to provide such cushions with a certain level of comfort, it is known to be useful to give them a profile adapted to the anatomy of the user. One The difficulty, however, lies in the choice of the anatomical shape. When a large number of people who are in size, Differentiating weight, age and gender, the pad to use is the profile that you give the pad

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•. ₂ _ t $ 22210

may, necessarily a very random compromise. For example, there must be anatomically correct support be arranged for the back in the lumbar region, whose Height in relation to the seat but from one person to the to others is just as different as that of the curve. It is therefore impossible to make a cushion so that its bulge a large number of different people satisfied.

For surgical purposes, a pad has been proposed that closely conforms to the anatomical shape of the User adapts. This pad is made of a soft one and tight shell, which is partially filled with small, light but resistant balls and attached to a vacuum pump connected so that they are under the influence of the Ambient pressure more or less strong around the body or body part to be tied and hold it together tightly. The presence of small, non-deformable balls in the interior of the shell has the effect that the cushion stiffened as the interior of the envelope is evacuated to form a rigid footprint. This imprint is therefore achieved at the expense of convenience. Since the little balls aren't compressible, so is it not possible to effectively change the main dimensions of the pad, for example its overall thickness.

Another proposed medical pad has the purpose of improving the user's blood circulation by that. the user is alternately supported by different parts of the cushion. This cushion is made made of a soft, dense shell, which is divided by bulkheads into at least two dense cells or groups of cells each containing an elastically compressible filler. The cells are single or in groups alternately connectable to a negative pressure atmosphere and are then compressed by atmospheric pressure, so that

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the user is only carried by the cell or group of cells from which the air has not been evacuated. In the case of a cushion of this type, those which divide the cover prevent them Bulk free movement of air in the entirety of the filler. Foreclosure prevents that Creation of a print that is adapted to the user everywhere. It also produces one in several dense cells divided shell not only difficult in terms of the construction of the cushion, but also in terms of the Arrangement of numerous lines and devices with which the cells selectively either to the vacuum pump or let the ambient air connect.

The invention is based on the object of a cushion to create that does not have these disadvantages.

The pad according to the invention comprises a soft and airtight, not subdivided or sealed off and particularly compressible in the direction of the thickness of the cushion Sheath, the interior of which contains an elastically compressible porous filler and optionally with the ambient air or is connectable or lockable with a negative pressure atmosphere, such that the internal pressure of the Regulate or maintain the envelope and the porous filler can be compressed by the negative pressure in the envelope.

The cushion according to the invention has an inherent rigidity which can be traced back to the elastically compressible filler. If one tries to compress the cushion by an external force, for example by the weight of the user, then the porous filler and the air contained in it oppose the one resistance. In _v where one regulates the internal air pressure in the cushion according to the invention, one can also change the shape of the pad when the external pressure forces remain unchanged. Of the

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elastically compressible porous filler causes a Heterogeneity, the different internal pressures in different Areas of the shell of the pad can arise. The internal air pressure in the roister is static as well as constant in an air mattress. The cushion according to the invention behaves dynamically when it is subjected to external forces is, however, different from an air cushion, since the porous filler is not exposed to the same pressure everywhere.

Any gown suitable for generating a vacuum, for example, is provided as the vacuum source a vacuum pump or the negative pressure of an engine.

In one embodiment of the invention, the cushion is connected to the negative pressure atmosphere through a tight container.

If the cushion is provided on an armchair, this can have a hollow frame that is tight and the Forms container in which the negative pressure atmosphere is generated.

In an armrest of the chair there is expediently an actuator for the internal pressure of the cushion regulating valve arranged.

A cushion according to the invention can in particular Use on an aircraft or spacecraft with a pressurized cabin. In this case, the vacuum container can according to a Further development of the invention can be connected to a vacuum pump via a line when the vehicle is not under Internal pressure and / or with the atmosphere surrounding the vehicle when the vehicle is in flight or in space Pressure is on. When flying high, the for the effect of the

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inventive pad required pressure difference between the external environment of the cushion and the negative pressure atmosphere by means of a compressor provided on the vehicle generated, which maintains a pressure in the vicinity of the cushion that is greater than the atmospheric pressure outside the Pressure cabin with which the vacuum tank can be connected.

According to a further feature of the invention, the line that connects the container to the negative pressure atmosphere contains a check valve.

Further features of the invention result from the subclaims.

The invention is illustrated in the following with the aid of a schematic

Drawings of several exemplary embodiments explained in more detail.

Show it:

Pig. 1 shows a schematic diagram of a first mode of operation of a cushion according to the invention;

Pig. 2 shows a schematic diagram of a second mode of operation; Pig. 3 to 6 different shapes one on an armchair arranged pad which is loaded by a person and is subjected to various internal pressures; and

7 shows the use of upholstery according to the invention in armchairs of an aircraft or spacecraft only partially shown.

The pad designated 1 in the drawings comprises a one-piece filling 2 made of porous, elastically compressible material, for example from iOlyether foam. The filling could also be made of latex foam, Wool, post hair, glass fiber, synthetic fiber or the like. exist. The filling is of a soft, airtight,

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Hall 3, which is not subdivided and can be collapsed in the direction of the Mcice cies upholstery, is enclosed. This Hille "consists preferably of elastic material. The IiLiIIe can, however, optionally close a line 4, a three-way valve 5 and lines 6 and 7 or connect to the Urage-Duugsluft or to a negative pressure atmosphere 3.

According to Pig. I, in which the operation of ci.es upholstery is shown on the floor, aas cushion but a container 9 sealed against the ambient air of the cushion with a vacuum pump that creates the negative pressure atmosphere IO connected.

According to FIG. 2, in which the control principle is one in one The air cushion arranged above the spacecraft is shown at a greater plug height, forms the outer environment of the The unoerpressure atmosphere and the surroundings of the vehicle The cushion is delimited by a pressure chamber 11, which forms the hull of the vehicle, and by a compressor 12 is kept under pressure. The compressor maintains a pressure in the vicinity of the cushion that is greater than that pressure outside the vehicle. ' This external pressure also prevails in the container 9, which is through the Line 7 is connected to the external atmosphere.

The internal pressure of the cushion can be controlled by a user on the manually operable three-way valve 5, regardless of whether the principle of action according to FIG. 1 or that according to FIG. 2 applies. When the valve 5 is open to the ambient air according to FIG. 5, the internal air pressure of the cushion is in equilibrium with the environment. If, when the valve 5 is opened, the pressure in the interior of the cushion is higher than that in the surroundings, for example as a result of the absence of a passenger ^ 1J, air flows through it

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out of your cushion When the pressure inside the The upholstery, on the other hand, is smaller than the one in the vicinity, then air penetrates the upholstery. Hear these movements on when an equilibrium is reached.

If the valve 5 according to Pig. 4 on the negative pressure atmosphere ' is open, the internal pressure of the cushion decreases until it has reached the level of the negative pressure atmosphere. Under the action of the external pressure forces, air escapes from the shell of the cushion and the filler contained in it is pressed together until the lower pressure generated by the elastic material and the atmosphere Counterpressure is in equilibrium with the external pressures. In Pig. 6 the pad is compressed as much as possible.

If you connect the pillow to the surrounding air, it will be inflated again and take its original position Shape according to Pig. 3 at.

Between these two extreme forms of the cushion there can be intermediate forms such as the one in Pig. Fig . 5 assume, in which, different from one person to another, the greatest convenience arises; this is achieved by actuating the valve 5 in one direction or the other or by closing it.

When the user 15 is relieved of pressure on the cushion, the imprint of the contact surface with the person remains in the cushion obtained for a relatively long time, because it is due to the suction cup effect of the cells of the filler in the area 14 under the User is maintained. This phenomenon depends on the structure of the porous filler and occurs in different ways Strength on. The durability of the print differs from one material to another. These

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Appearance has meaning for 'comfort, as it is the properties of the upholstery and the imprint formed in it a semi-rigid form that is dependent • Formed from local prints is one very much has greater stability than is the case with known cushions.

In Fig. 7 is the application of padding according to the invention shown in armchairs 15, which are on a support 16 are arranged in an aircraft or spacecraft, of which only a part of the fuselage 17 is indicated. Upholstery of the described type are on the backrest 18 in the area of the lena of the user and in the front area of the seat part 19 provided. The cushions 1 are each connected via a line 4 to a manually operated three-way valve 5, which is arranged in the armrest of the chair and connected to the ambient air by lines 6 and 7 and a container 9 are; the container is formed by the hollow supporting structure of the armchair that supports the upholstery. In The negative pressure reaches this container through a line 21 which opens out on the outside of the fuselage and either if the aircraft or spacecraft on Boaen without internal overpressure is connected to a vacuum pump via a quick-action coupling 22, or to the external environment of the vehicle is connected if it is under increased internal pressure when flying high.

Two-way several containers are parallel to each other connected to the same line 21. In the line 21, a check valve 23 is provided, which is in the sense of the arrow in Fig. 7 opens and allows the internal pressure Maintainable in the container when the vehicle is on the ground. Between the container and the check valve a manometer 24 is arranged, which makes it possible to monitor the negative pressure in the container.

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In addition, every seat or back cushion comes with the Ambient air connected through a safety valve 25, which is in the direction of the arrow in Pig. 7 Opens when the pressure the ventilation air is lower than the internal pressure of the cushion is.

The aircraft or spacecraft is equipped with a compressor 12, the pressure difference between the environment of the chair and the container during the flight maintains. The check valve 23 makes it possible to automatically maintain the negative pressure prevailing in the container, when the vehicle is at the Bouen; However, if the negative pressure in the container as a result of repeated or simultaneous The actuation of the cushions at a low plug height or while staying on the floor has become insufficient, For example, a vacuum pump 10 can be connected to a coupling 22 that can be operated quickly.

Even if the cushion according to the invention in the above in particular has been described as equipment of an aircraft or spacecraft, so it can be just as good as Vohnmöbel in the form of an armchair, divan or reclining seat as well as medical furnishings or for the Use land or sea transport.

Expectations:

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Claims (9)

DH ₁ IJfO-F-WUKeTHOKi- · KÜNCHSN ÖO DIPIfclWa.G. ΡϋΙΛ. · ΟΑντ * ΐΟ «β * τ» Αββζ · DRJfcr.PSCHlCAN N - - ratanm »a ·« si DR-UtGLD-BKBKXNS ψξ} mHununmti 1A / G-36 220 EXPECTATIONS Cushions or mattresses for seating or reclining furniture, is in particular for use as seat and / or back upholstery in armchairs for aircraft and space vehicles, characterized in that it is soft and airtight, not subdivided or sealed off and particularly compressible in the direction of the thickness of the pad (1) Sheath (3), the interior of which contains an elastically compressible porous filler (2) and optionally 'with the ambient air or with a suppressed atmosphere connectable or lockable did, in such a way that the internal pressure of the shell regulate or maintain and the porous filler can be compressed by the negative pressure in the shell. 2. Cushion according to claim 1, characterized in that the porous filler (2) is a single one Piece forms, 3. Cushion according to claim 1 or 2, characterized in that the interior of the shell (3) with the Ambient air is verbunaen through a safety valve (25), which opens when the bridge of the ambient air is smaller than the internal pressure of the pad (1). 4. Cushion according to one of claims 1 to 3 * thereby gakennseiohnet that it is with the atmosphere through a tight container.jrerbundeo 1st 909847/0611 5 «· Upholstery according to claim 4, characterized in that the sealed container (9) the substructure of the pad (1) forms. 6. Cushion according to claim 4 or 5 for aircraft or spacecraft with a pressurized cabin, characterized in that that the container (9) via a line (7) with a vacuum pump (10) and / or with the atmosphere outside the pressurized cabin (11) under pressure can be connected. 7. Cushion according to one of claims 4 to 6, characterized characterized in that the line (7) which connects the container (9) with the negative pressure atmosphere, a Non-return valve (2'5) contains 8. Cushion according to one of claims 4 to?., Characterized characterized in that the container (9) communicates with corresponding containers of other cushions (1). 9. Cushion according to one of claims 1 to 8, characterized in that the device? (Valve 5) for optionally connecting the interior of the envelope (3) with the ambient air or the negative pressure atmosphere unu to Completing the cover on an armrest (20) of a üessel (15) are arranged. 909847/061