ES2212873B1 - FRAME FOR SOFAS. - Google Patents

Abstract

Sofa frame. It has a supporting structure composed of two modules in "L" (13), formed by two modules (13, 13 '') in "L" articulated by the lower front end. Of which the lower module (13 '') is fixed and the upper module (13) capable of rotating on a horizontal articulation axis (15). Joint means (25) link the two modules at the end thereof opposite to said horizontal joint. A frame (7), intended to support a cushion or similar element, is integral with the articulation means, and a compression spring (10) joins the members in "L". When a person feels, his weight exerts a downward force, overcoming the resistance of the spring and causing the upper module to swing (13), so that the frame, and with it the headrest, acquires an essentially vertical position.

Description

Sofa frame.

Technical sector of the invention

The present invention relates to a framework for sofas, of the type constituted by a structure carrier that is covered by cushion elements, covers and others coating elements.

Background of the invention

Sofas and armchairs are usually comprised of a framework consisting of a supporting structure, usually metallic, although it can be made of other rigid materials, such as wood or plastic, or a combination thereof. This structure It is covered by cushion elements, covers and other elements of covering, which determine the horizontal seat, the backrest and, In some cases, a headrest.

In certain cases, the presence of a headrest that rises from the back of the sofa can be Unsightly and prevent vision. When a sofa is found located in the middle of a space where right behind you don't have a wall, it is very difficult, if not impossible, for the user to arrange a cushion to support the head. All this can lead inconvenience in some applications.

Explanation of the invention.

In order to solve these inconveniences, the This invention discloses a frame for sofas, which in its essence is characterized because said structure is composed by two modules essentially in "L", each of which it is in turn formed by two members also essentially in "L", the two modules being articulated by one of their extremes; a frame, intended to support a cushion or element analogous, simultaneously solidary of the modules in "L" by means of articulation; and elastic means of union between the modules, which tends to separate them permanently, all adapted so that in the absence of solicitations, the frame is in a resting position essentially different from the vertical and that when a downward force is exerted on the module, overcoming the resistance of elastic means from from said resting position, the upper module descends and is approaches the lower module, causing the tilting of the articulation means, so that the frame acquires a essentially vertical position.

According to a preferred embodiment, the lower module is fixed and the upper module is susceptible to rotate on a horizontal articulation axis.

According to another feature of the invention, the analog members of each module are joined by crossbars that support both modules.

According to another feature of the invention, the articulation means between the frame and the modules comprise two respective levers that link the "L" members of each module at the end thereof opposite to the horizontal joint, each lever being composed of two arms, respectively articulated to each member for a joint.

Preferably, the elastic means are constituted by at least one spring arranged vertically between a crossbar, which joins the members of the lower module, and a crossbar, which joins the members of the upper module.

Brief description of the drawings

The description is made below detailed of a preferred embodiment, although not exclusive, of the sofa frame of the invention, for whose best understanding is accompanied by some drawings, given merely by way of  non-limiting example In these drawings:

Fig. 1 is a perspective view of an example of embodiment of the frame of the invention, which shows a position folded from the frame;

Fig. 2 is another perspective view, analogous to that of Fig. 1, in which the frame of Fig. 1 is shown in An extended position.

Fig. 3 is a side elevation view, corresponding to the frame of Fig. 1;

Fig. 4 is another side elevation view, corresponding in this case to the frame of Fig. 2; Y

Fig. 5 is a side elevation view, which illustrates a sofa provided with the frame of the invention, in the stowed position of this one.

Detailed description of the drawings

In these drawings it can be seen that the frame 1 for sofas 20 in question is constituted by a structure bearing, in particular metallic, intended to be coated by cushion elements 11, 12, covers and other elements of covering, to form the horizontal seat 21, the backrest for the back 22 and a headrest 23, as seen in the Fig. 5.

The structure is composed of two modules 13 and 13 'in "L" articulated by one of its ends 14, in this case the lower front end corresponding to the sofa 20 in question.

Each of modules 13 and 13 'consists of two respective members 2, 2 'and 3, 3' essentially in "L".

The lower 13 'module is fixed, while the upper module 13 is tiltable, being able to pivot on an axis of horizontal joint 15.

Members 2 and 2 'of the lower 13' module are rigidly linked to each other by means of crossbars 8. By its part, the 3 and 3 'members of the upper module 13 are rigidly linked to each other by means of crossbars 9.

Each module 13 and 13 'comprises, means 25 of joint arranged at the upper rear end of the sofa 20 contrary to that of the lower front joint 15, which articulation means 25 comprise a lever 4 for each member 2, 2 'and 3, 3' of the module that links both members in 2, 3 and 2 ', 3'. Each lever 4 is composed of two arms 5 and 6. The arm 5 is articulated to the lower "L" member 2 and the arm 6 is articulated to the upper "L" member 3 of the module 13. Arms 5 and 6 are articulated with each other in a joint 16.

The frame 1 comprises a frame 7, intended for be supporting a cushion or similar element for a headrest 23. The frame 7 is simultaneously integral with the arms 6 of both levers 4 of the articulation means 25 of each of modules 13 and 13 '.

Between modules 13 and 13 'there is a spring 10 arranged vertically between a crossbar 8, which joins the members 2 and 2 'of module 13', and a crossbar 9, which joins members 3 and 3'del module 13. The spring 10 is compression, so that it tends to that, in the absence of solicitations, when there is no one on the sofa 20, the upper module 13 is separated from the lower module 13 'and therefore, the frame 7 remains in position horizontal down.

The operation of the sofa 20 provided with Frame 1 according to the invention is as follows. In absence of solicitations, the frame 7 is in a rest position, (Figs. 1, 3 and 5) essentially different from the vertical. When a user sits on sofa 20, exerts a downward force on the upper module 13, essentially equivalent to the weight of the person, who overcomes the resistance of the dock 10. Then, the upper module 13 descends and approaches the lower module 13 ', causing the tilting of the levers 4 of the means of articulation 25, which levers drag on its turn to frame 7, and with this one to the headrest 23, this one acquiring a position essentially vertical (Figs. 2 and 4), in which you can fulfill your function.

Once the nature of The invention, as well as a preferred embodiment, is for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (5)

1. Frame (1) for sofas (10), of the type constituted by a supporting structure intended to be covered by cushion elements (11, 12), covers and other covering elements, characterized in that said structure is composed of two modules (13, 13 ') essentially in "L", each of which is in turn formed by two members also essentially in "L" (2, 2' and 3, 3 '), the two modules being articulated by one of its ends (14); a frame (7), intended to support a cushion or similar element, simultaneously integral with the modules (13, 13 ') by means of articulation means (25); and elastic joining means (10) between the modules (13, 13 ') that tend to separate them permanently, all adapted so that in the absence of solicitations, the frame (7) is in a resting position essentially different from the vertical and that when a downward force is exerted on the module (13), the resistance of the elastic means (10) being overcome from said resting position, the upper module (13) descends and approaches the module (13 ' ) lower, causing the tilting of the articulation means (25), so that the frame (7) acquires an essentially vertical position. 2. Frame (1) for sofas (10) according to claim 1 characterized in that the lower module (13 ') is fixed and the upper module (13) is capable of rotating on a horizontal articulation axis (15). 3. Frame (1) for sofas (10) according to claim 1, characterized in that the analogous members (2, 2 'and 3, 3') of each module (13, 13 ') are connected by respective crossbars (8, 9 ) that support both modules. 4. Frame (1) for sofas (10) according to claim (1) characterized in that the articulation means (25) between the frame (7) and the modules (13, 13 ') comprise two respective levers (4) which link the members in "L" (2, 2 'and 3, 3') of each module (13, 13 ') by the end thereof against the horizontal joint (15), each lever being composed of two arms (5 and 6), respectively articulated to each member by a joint (16). 5. Frame (1) for sofas (10) according to claim 1, characterized in that the elastic means (10) are constituted by at least one spring arranged vertically between a crossbar (8), which joins the members (2, 2 ') of the lower module (13 '), and a crossbar (9), which joins the members (3, 3') of the upper module (13).