DE1778534A1 - Poster body made entirely or primarily of synthetic foam without a frame or tubular frame - Google Patents

Description

Additional patent to the application Akt.Z .: N 32.212 X / 34 g subject of The innovation is upholstered furniture or parts made entirely from a combination of different ones Foams including a load-bearing shell using the molded foam process.

Upholstered furniture and upholstered bodies usually consist of a support frame, a flexible body as upholstery and a cover fabric. The flexible upholstered body is again mostly formed by a combination of different spring bodies, such as spring mattress, rubber hair pad, cushion cover, etc.

There are also upholstered bodies known that on a spring core dispense and are made entirely of foam. There are also combinations of Known foam with foamed-in rubber hair or flake composite panels. Further One knew foam bodies with foamed-in feathers in the most varied of variations: More recently, whole pieces of upholstered furniture have only been made of foam which were, however, still of a very simple construction, especially Furniture for children and teenagers.

They still had the deficiency of having rather misshapen wall thicknesses, to achieve the necessary load-bearing capacity; besides, the upholstered body had to be be clad with an upholstery fabric, which partially had the function of the individual parts like holding the seat and back together in a creamy fashion. According to the patent 1 233 991 was the first successful attempt made by a combination of foams of different densities within a cushioned body a cushioned body to produce different hardness and compressibility. Another Step was done with the development of "small cushioned bodies with molded, flexible Outer skin "and the" method for producing small cushions from synthetic foam and other cushioning material ". The foamed outer skin formed from reagents but was still limited to smaller upholstered bodies.

Significant progress was only made when it became possible to provide entire sections of a cushion with a hard-wearing foam layer, by making this hard-wearing layer in the same shape, but with a second lid was prefabricated and then poured back with soft foam. In the end it also succeeded after registering Akt.Zign. N 32.212 X / 34 g larger upholstery without covering the frame with a dense, film-forming foam by using a Core made of other upholstery material such as flake composite or reinforced soft foam foamed. The outer skin here only has the task of being a frame-less upholstered body to give a protective surface instead of a textile cover.

The task of this innovation is now to design the outer skin in such a way that that, in addition to clothing, they are load-bearing, resistant to the effects of the weather Function.

The surprising fact has emerged that the outer skin with the cellular layer behind it, with sufficient wall thickness, such a high tear strength has that not only individual upholstered bodies but entire pieces of upholstered furniture without every frame made of wood or pipe has a high dimensional stability without any flexibility very much to lose when combining firm and soft foam is brought into a certain ratio, or when the stressed tension and compression Parts have a stronger solid layer than those only designed for compression Parts. In the flexible foam area, block foam, or flake composite or Rubber hair plates are foamed in, as has been done so far.

In the following drawings, upholstery increases with increasing Stress on tear and tensile strength demonstrated as examples.

Fig. 1 shows a simple seat in section, as it is for garden furniture, Boat seats etc. is needed. The outer shell 1 is preformed and has a tight, hard-wearing outer film, behind which there is a cellular and therefore flexible, but has formed tough layer 2. This was caused by the internal pressure of the reagents achieved, whereby dosage and mold temperature play a role.

Shortly before the setting and the completion of the chem. Reaction is that The lid of the mold is removed and the amount of flexible foam reagents poured in in precisely dosed quantities after on the second (now flat, De -..- -; on spacer bolts a Plate (4) has been attached from other padding material.

The mold was closed and the flexible foam that formed could fill the cavity of the mold. It has become firmly attached to the square foam (1,2) and the plate (4) connected. In Fig. 2 a cushion of a similar type is shown.

The core plate 4 is missing. The contour of the surface (21) (jüantelschaum) is modeled on a pillow with retracted buttons. The surface can therefore can be designed permanently in any desired shape.

Zig. 3 shows the section through a car seat in which the seat mirror (31) has a relatively thin covering layer, the circumferential edge beads (32) have a noticeable reinforcement of the covering layer and thus give the seat a firm hold. Since the seat mirror should be particularly soft, it is built under with a block-foamed plate, which can consist of 2 or more parts (33 and 34). Shell layer (31/32) and core plates (33/347 are through: the Soft foam (35), the density of which can vary from the core plates, surrounded.

Fig. 4 represents the section through a seat for Landwirtschaftlis @ äbM @ .sier @ tn 'The shaped back (41) is largely through the side cheeks (42). Since all rigid frame parts are missing and only spring bars (43) in the back and a support spring (44) under the seat offer this a "floating" fixation on the vehicle, the seat not only has a progressive shock impact, but is depending on the displacement of the main load in yielding to certain limits (45/46). The dense outer skin also makes the seat waterproof and washable.

Washability is particularly important for hospital furniture, as it is used by a wide variety of patients. They are also required to be particularly light and adaptable and collapsible when not in use in order to be transportable and space-saving.

As examples, 2 supports for the sick or infirm are demonstrated in FIGS. 5-8. Such supports are known. However, they consist of block foamed panels that are covered with textile fabric. The foam sheets should be able to be put together. The strength is , naturally low and the cleaning of the pollutant must heaps venonmen r # d #. instruction is right g $. ea unhappy. In contrast to the known designs, the supports according to this proposal are firmly connected by the outer skin. In addition, the strength is correspondingly significantly increased and the cleaning is not a problem. The armrests 52a and 52b are hinged on the back (51), which can be shaped as desired Seat plate 54 are attached. This fixes the armrests in their teeth. At the same time, the backrest (51) is also stabilized and immovable when the patient is sitting on the seat surface 54. Due to the foam combination described above, the support is resiliently firm. If it is no longer required, the armrests can be swiveled behind the backrests and held together with the seat plate in a suitable manner to form a relatively narrow package (Fig. 7). 55) are formed by compressed shell foam.

The patient support according to FIGS. 6-8 is designed similarly to the armrests 62 are rotatably mounted in ball sockets 73, which are from the shell foam 7o of the backrest 61 are formed and into which an expansion ball 81 attached to the armrests engages.

This expansion ball 81 can also be formed from shell foam. she is secured by a plate 82 similar to a washer by tightening a Wing nut 83 stretched so that it rests almost positively in ball socket 73. As a result, the armrests 62a and 62b can be brought into any angle to the backrest will.

A seat plate or a connecting strip 63 is also fixed here the armrests in use and rest position.

The shell foam 1 gives the inner soft foam 3 such a great hold that the very light support made of foam. has a real practical value, and the dense Xunstatoff outer skin can be quickly washed off. The fact that entire pieces of upholstered furniture can also be produced using this foam process is becoming apparent in the Big. 9 and 1o demonstrated on 2 examples. It shows: Fig. 9a center section through an armchair with armrests Fig. 9b section AB through an armchair with armrests Fig.loa center section through a cocktail chair Fig.1ob front view of the armchair Fig.loe top view In all cases, the required foot frame is not shown, but only the actual upholstered body.

The backrest 9.2 or 1o.2 is in its inclination to the seat 9.3. or 10.3 held by the armrests 9.1 or the side cheeks 1o.1 of the backrest. The shell foam 1/2 of these side parts absorbs the train that is created by the load on the backrest 9.2 or 1o.2. It is certainly possible (and desirable) for the backrest to give a little; but after the discharge it returns to the position it was given in the form when it was foamed. With these models, too, it is entirely possible and useful to make certain areas softer by inserting sheet goods (91,92,93,94). As an example of the design option, the surface in FIG. 9 is designed with the character of the button insert pad, but it can have any other structure, since the whole body is manufactured using the molded foam process.

In those cases in which the dense outer skin of the shell foam or The piece of furniture can of course have the color or structure of which should not be visible can be covered with an additional textile or other upholstery material.

Claims (1)

Molded foam upholstered furniture or parts therefor, characterized in that they 1. from a combination of a Weiceha # hauummkern (3) --- sore the core on all sides or @p @@ - T- $ eg enclosing shell foam with a dense, hard-wearing outer skin (1) and a cellular layer (2) behind it, the shell foam being more load-bearing, tear-resistant and tensile-resistant than the core, 2. the soft foam both homogeneous and through insert panels (4 ) other (prefabricated) upholstery materials "such as block foam, rubber hair, or the like. 3. cushion body or upholstered furniture according to claims 1 and 2 characterized in that the surface of the body is designed as desired, 4. cushion body or upholstered furniture according to claims 1,2 and 3 characterized in that the kantelschaum places is used without pdchschaußkern and a few mm thickness may be zusammengeprellt (55), 5. cushion body or upholstered furniture according to claims 1,2 and 3 gekennseichnet characterized in that, for moving or from and to mntierbare parts, such as arm rests or the like. Hefestignrgselexente 3.s and are formed from sheath foam , 6. cushion body according to claims 1 to 5 characterized in that it susät-DSSS $ liehesit an upholstery fabric can be related.