RU2789300C1 - Mattress for convertible furniture - Google Patents

Abstract

FIELD: furniture.

SUBSTANCE: invention relates to the furniture industry, namely to mattresses for convertible furniture, and can be used in the design of sofa beds. The mattress contains the first layer (1) and the second layer (2), made transversely divided over the entire thickness with the formation of at least two adjacent parts (2a, 2b), the first layer (1) is made integral, and the second layer (2) is connected with the first with the possibility of opening the parts (2a, 2b) of the second layer and elastic deformation of the first layer when the mattress is bent. At the same time, the mattress additionally comprises a flat base (3) attached to the second layer (2), made of an inelastic material with the possibility of being connected to the furniture transformation mechanism, which provides bending of the mattress, and the specified base (3) is transversely divided over the entire thickness in the area (4) separating parts of the second layer (2).

EFFECT: increasing the thickness of the mattress while maintaining the possibility of folding it when transforming furniture, reducing the wear of the mattress, as well as eliminating the formation of irregularities in the folding area.

8 cl, 11 dwg

Description

[01] Field of technology

[02] The invention relates to the furniture industry, namely to mattresses for transformable furniture and can be used in the construction of sofa beds.

[03] State of the art

[04] In traditional sofa beds, the sleeping place is usually formed from several soft elements. At the joints of these elements, there are protrusions or depressions associated with the design features of the transformable parts. Transformable furniture with a solid thin mattress is also used, which is completely bent when folded, which, during prolonged use, leads to the formation of creases at the fold in the unfolded state. That is, unlike conventional beds, the lying surface in convertible furniture is not flat. Regular use of such sleeping furniture is not comfortable and in the long run can lead to health problems.

[05] Thus, there is a need to develop a design for a folding mattress for convertible furniture, having sufficient thickness and which could provide the comfort of a standard mattress for a conventional bed.

[06] In the Chinese patent CN 202112709 U, 01/18/2012, a folding mattress design is disclosed, which includes a first (upper) layer and a second lower layer connected to it. The second layer is divided over the entire thickness in the transverse plane to form two adjacent parts. In this case, the first layer is also divided by a T-shaped slot, which does not pass through the entire thickness of the first layer. This design provides the possibility of opening the parts of the second layer with elastic deformation of the first layer when the mattress is bent. The first layer can be made of latex cotton and the second layer of polypropylene. This design allows you to fold the mattress in half at an angle of up to 180 °. The disadvantage of this analogue is the impossibility of its use for transformable furniture due to the lack of fastening elements to the transformation mechanism. In addition, the presence of a cut in the first layer during prolonged use due to wear of the material will lead to deformation of the junction and the formation of creases or depressions on the outer part of the first layer, which will cause discomfort when lying.

[07] The closest analogue of the invention is a mattress for a transformable bed, described in the publication of the application of Japan JP 2004242798 A, 02.09.2004. Said mattress contains three layers: a top layer made of foam material with notches to improve flexion, an intermediate layer made of individual parts separated in transverse planes, and a base layer made of a material based on synthetic resin fibers. In this case, the elements of the intermediate layer are attached to the main layer using tapes. This design allows you to bend the mattress at a small angle in a bed with a lifting back. However, such a configuration is not suitable for use in sofa bed compositions where a larger bending angle of the parts is required, which makes it impossible to produce a thick foldable mattress. In addition, the presence of notches in the upper layer and the absence of its attachment to the intermediate layer will inevitably lead to the formation of uneven sleeping places in the form of bumps, depressions or creases during prolonged use of the mattress.

[08] Thus, the technical problem to which the invention is directed is the impossibility of providing a mattress for convertible furniture with the characteristics of a traditional mattress. These characteristics include a sufficient thickness of the mattress (more than 200 mm), as well as the possibility of forming an even sleeping place in the unfolded state without creases and depressions that form during repeated bending.

[09] Disclosure of the Invention

[010] The technical result of the invention is to increase the thickness of the mattress while maintaining the possibility of folding it during the transformation of furniture, reducing the wear of the mattress, as well as eliminating the formation of irregularities in the folding area.

[011] The specified technical result is achieved in the claimed invention due to the fact that the mattress for transformable furniture contains the first layer and the second layer, made transversely divided over the entire thickness with the formation of at least two adjacent parts. The first layer is made integral, and the second layer is connected to the first one so that parts of the second layer can be opened and the first layer can be elastically deformed when the mattress is bent, while the mattress additionally contains a flat base attached to the second layer, made of inelastic material with the possibility of connection with the furniture transformation mechanism , providing bending of the mattress, and the specified base is transversely divided over the entire thickness in the area of separation of the parts of the second layer.

[012] The specified result is also achieved in private embodiments of the invention:

[013] - the base is made of a material based on wood or metal or plastic,

[014] - the first layer is made of foam,

[015] - the second layer is made of a foam material having a greater rigidity in relation to the material of the first layer,

[016] - the second layer is made of spring blocks,

[017] - the area of separation of the parts of the second layer, runs across the mattress or along the mattress, or along its diagonal,

[018] - the thickness of the first layer is not more than 150 mm,

[019] - the first layer and/or the second layer, and/or the base includes several sublayers.

[020] Unlike analogs, in the claimed invention, the first (top) layer is made integral, and the second (carrier) layer is connected to it and divided into two or more parts in the transverse direction over the entire thickness. This allows you to increase the thickness of the mattress up to 400 mm and more while maintaining the possibility of folding it to an angle sufficient to transform the furniture up to 180°. At the same time, the presence of a third layer in the form of a flat base made of inelastic material increases the bearing properties of the mattress, preventing deformation of the first layer, and also further facilitates folding. Thus, the design provides easy transformation with a large thickness of the mattress, reduced wear during multiple transformations (folding) and the elimination of the formation of uneven mattress in the folding area.

[021] Brief Description of the Drawings

[022] The invention is illustrated by drawings, where:

The figure 1 shows a General view of the mattress in the unfolded state;

The figure 2 shows a longitudinal section of the mattress in the unfolded state;

Figure 3 shows a general view of the mattress in the folded state;

Figure 4 shows a side view of the mattress when folded;

Figure 5 shows a longitudinal sectional view of the mattress in an alternative embodiment with a box spring.

Figures 6-11 show alternatives for the transverse separation of the second layer.

[023] Structural elements are indicated in the figures by the following positions:

1 first layer;

2 - second layer;

2a - the first part of the second layer;

2b the second part of the second layer;

3 - flat base;

4 separation area of the second layer;

5 frame transformation mechanism.

[024] the Implementation of the invention

[025] The claimed mattress includes a first (upper) layer (1), a second layer (2) and a third layer in the form of a flat base (3), which is a means of attaching the mattress to the transformation mechanism.

[026] The first layer (1) is a bonding layer and is made in one piece, without cuts and cavities. Said layer can be made of an elastic elastic material, in particular a foam material, such as polyurethane foam (foam rubber).

[027] The second (middle) layer (2) performs a support (bearing function) and is attached to the first (1) over the entire contact surface of the layers (1) and (2). In this case, the second layer (2) is divided into two parts (2a, 2b) by a transverse region (4) in the form of a cut, passing through the entire thickness of the second layer (2). Thus, the parts (2a, 2b) of the second layer in the unfolded state are joined to each other along the specified area (4).

[028] The separation area (4) of the parts (2a, 2b) can be made in the form of a plane passing perpendicular to the second layer (2) (see Fig. 1-5) or at an angle, or can form a broken or curved surface (Fig. .6-11). In this case, the area (4) can run across the mattress (parallel to the short side), along it (parallel to the long side) or diagonally. Also in the second layer (2) it is possible to perform several separation areas (4). These areas (4) may run in parallel or may be associated with the formation of a shaped separation surface of the parts of the second layer (2). In one of the embodiments of the invention, the second layer (2) can be made of foamed material, such as polyurethane foam (foam rubber). In this case, the second layer (2) should preferably have a greater rigidity with respect to the first layer (1). This will allow the mattress to deform less during operation. In another embodiment, the implementation of the second layer (2) can be made of spring blocks (Fig. 5). The design features of the mattress allow you to combine spring blocks and foam rubber with different properties and characteristics to obtain different properties of the mattress.

[029] The thickness of the first (1) and second (2) layers may vary depending on the design of the furniture and the transformation mechanism. As a rule, the second layer (2) has a thickness significantly greater than the first one in order to enable easy folding of the mattress, as well as to prevent its deformation. It is preferable to make the first layer (1) not more than 150 mm thick, which allows the mattress to be easily folded without unevenness on the outer surface. More optimal thickness of the first layer is up to 100 mm. The overall thickness of the mattress can then vary, in particular from 100 mm to 400 mm. However, in this construction it is possible to manufacture mattresses of greater thickness by using a composite second layer, which in any case will not interfere with the easy folding of the mattress.

[030] The base (3) of the mattress is its third (lower) layer. The base (3) is connected to the second layer over the entire contact surface and is also divided into two or more parts in the transverse direction in the separation area (4) to enable the parts of the second layer (2) to open. The base (3) is made of a hard, non-elastic material, such as a material based on wood (plywood), plastic or metal. In this case, the base is attached to the frame (5) of the transformation mechanism, for example, by means of screws.

[031] Each of these layers: the first layer (1), the second layer (2) and the base (3), may consist of several sublayers of different materials to form a multilayer mattress structure. In this case, the mattress may additionally include a layer of outer upholstery made of fabric, leather or other material.

[032] The mattress functions as follows

[033] In the unfolded state, the mattress, due to the presence of a solid first layer (1), supported by the more rigid parts (2a and 2b) of the second layer (2) and the base (3), forms a flat bed. When folding, part of the frame (5) of the transformation mechanism rotates and opens parts (2a) and (2b) of the second layer (2), as well as part of the base (3) and creates an elastic deformation of the first layer (1). During the reverse unfolding, the mattress returns to its original position due to the elastic top layer (1) without the formation of creases and depressions in the folding area. In this case, the second layer (2) and the base (3) perform a load-bearing function, keeping the first layer (1) in an even state.

[034] The use of such a mattress as part of a convertible furniture will increase the comfort of the bed, which will be comparable to the use of a solid bed mattress.

Claims (8)

1. Mattress for convertible furniture, containing the first layer (1) and the second layer (2), made transversely divided over the entire thickness with the formation of at least two adjacent parts (2a, 2b), characterized in that the first layer (1) is made solid, and the second layer (2) is connected to the first one so that the parts (2a, 2b) of the second layer can be opened and the first layer (1) can be elastically deformed when the mattress is bent, while the mattress additionally contains a flat base attached to the second layer (2) ( 3), made of non-elastic material with the possibility of connection with the mechanism of furniture transformation, providing bending of the mattress, and the specified base (3) is transversely divided over the entire thickness in the area (4) of separation of parts of the second layer (2). 2. Mattress according to claim. 1, characterized in that the base is made of a material based on wood, or metal, or plastic. 3. Mattress according to claim 1, characterized in that the first layer (1) is made of foam material. 4. Mattress according to claim. 3, characterized in that the second layer (2) is made of foam material, which has a greater rigidity in relation to the material of the first layer. 5. Mattress according to claim 1 or 4, characterized in that the second layer (2) is made of spring blocks. 6. Mattress according to claim 1, characterized in that the area (4) of separation of parts of the second layer runs across the mattress, or along the mattress, or along its diagonal. 7. Mattress according to claim. 1, characterized in that the thickness of the first layer (1) is not more than 150 mm. 8. Mattress according to claim 1, characterized in that the first layer (1) and/or the second layer (2) and/or the base (3) includes several sublayers.

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