ES2701350T3 - Backrest / headrests of variable height for an article of upholstered furniture that has an electromechanical lifting mechanism - Google Patents

Abstract

An article of upholstered furniture (100) comprising a lumbar support (50), a backrest (51) that also acts as a headrest, a seat (52), a footrest (53) and a support base (54), which also comprises a device (101) inserted into said backrest / headrest (51), wherein said device (101) comprises a first upper frame (60), two rail systems comprising two guides (61, 61a) and two sliding bodies (62, 62a), a second lower frame (64) serving as a base and comprising two fixings (63, 63a) and a linear electric actuator piston (70), and wherein said first upper frame (60) is joined to said second lower frame (64) by means of said two rail systems, joining the guides (61, 61a) of the rail systems to said first upper frame (60) and joining the sliding bodies (62, 62a) of the systems of rails to the fixings (63, 63a) of said second lower frame ( 64), said first upper frame (60) being designed to move longitudinally along the axis of the rail system driven by said electric linear actuator piston (70), whose electric linear actuator piston (70) is attached to the first upper frame (60). ) and to the second lower frame (64) by means of perforated fasteners (65, 66), and wherein said first and second upper frame (60) and lower frame (64) form a single frame (80) mounted on which it is mounted said piston (70) electric linear actuator, and wherein said device (101) inserted into said backrest / headrest (51) of said article of upholstered furniture (100) can generate the vertical movement of said backrest / headrest (51) of said article of upholstered furniture (100) completely independent of the movement of said lumbar support (50) and said seat (52), and wherein said backrest / headrest (51), when operated by said device (101), ismoves vertically, longitudinally with respect to the support base (54) of said article of upholstered furniture (100), and completely independently of said lumbar support (50) and of said seat (52), characterized in that both said lumbar support (50) as said seat (52) are separated from said backrest / headrest (51) and because the article of furniture comprises mechanisms designed to move the lumbar support (50) and the seat (52), the mechanisms being separated from the frame single (80) mounted on said device (101).

Description

DESCRIPTION

Backrest / headrests of variable height for an article of upholstered furniture that has an electromechanical lifting mechanism

Technical field

The present invention relates to the field of upholstered furniture and, in particular, to the field of electromechanical systems designed to allow the vertical movement of the backrest of an article of upholstered furniture (such as a sofa or an armchair), whose article of furniture upholstery also comprises a seat base, a reclining lumbar support and an extendable footrest and whose backrest also functions as a headrest.

The object of the present invention is a mechanical device that is suitable for installation in an article of upholstered furniture, and is designed to allow longitudinal movement of the backrest / headrest with respect to the base that supports the article of upholstered furniture, whose backing / Headrest is not anchored or mechanically connected to the seat or lumbar support, and whose backrest / headrest can be moved, by means of said mechanism, independently of the movement of said seat base or said lumbar support.

Also an object of the present invention is an article of upholstered furniture comprising a backrest / headrest, a seat base, a reclining lumbar support and an extendable footrest and also incorporating an electromechanical lifting mechanism for vertically moving said backrest / headrest with independence of the movement of said seat base or of said lumbar support.

State of the art

US-3,738,706 A describes a furniture article similar to the invention. In the current state of the art there are already mechanisms designed to move the backrest and the headrest of upholstered furniture (such as a sofa or armchair) but all of them present problems.

The main problems of the existing mechanisms are that they require that the designs of the upholstered furniture have specific shapes, being especially bulky and requiring a considerable amount of material for its realization; These aspects will be clarified below in the present description.

First of all and with reference to Figure 1, it should be noted that, usually, a high quality upholstered furniture 1 structurally, for aesthetic and ergonomic reasons, has a backrest 10 and a headrest 11, different from each other, but both united to form one body

These types of headrests 11 generate a semicircular movement, as shown in Figure 1A, to change from a "closed" position, in which they are horizontal, parallel to a seat 13, to an "open", fairly vertical position. , perpendicular (or almost perpendicular) to said seat 13, passing through all the intermediate positions.

Referring again to Figure 1, a high-quality upholstered furniture 1 comprises (in addition to said reclining backrest 10, said movable headrest 11 and said seat 13, an extendable footrest 12, wherein said headrest 11 and said footrest 12 are in the "closed" position and the backrest 10 is in the vertical position with respect to the seat 13, that is, in the sitting position.

With reference to Figure 2, the same upholstered furniture 1 is shown in an extended position, or relaxation position, and has the headrest 11 raised, the backrest 10 reclined and the footrest 12 extended and elongated.

In said upholstered furniture 1, the movements of the three parts mentioned above (the backrest 10, the headrest 11 and the footrest 12) are interconnected, so that the movement of one part follows the movement of the other parts to ensure maximum comfort and the most ergonomic sitting position for a user U.

According to the above, when the user U decides to extend the footrest 12 from the "closed" position (as shown in Figure 1) to an extended position (as shown in Figure 2), the backrest 10 also reclines and necessarily moves the seat 13 forward: this happens, as mentioned, in order to ensure maximum comfort and relaxation for the user U; it should be noted that, theoretically, it would be conceivable to allow the extension of the footrest 12 without reclining the backrest 10, and therefore, without the seat 13 moving forward, but the user U would be in an unnatural and uncomfortable position that could not Hold for a long time.

The laws of ergonomics dictate that the extension of the user's legs must be accompanied by a relaxation down the back of the user; moreover, to make the user U even more comfortable, when the footrest 12 is extended and the backrest 10 is reclined, the upholstered furniture elements already existing in the market usually have the possibility of "lifting" the headrest 11, as shown in FIG. shown in Figure 2, to provide support to the head of the user should the user U, from a semi-supine position, wish to keep his head upright to carry out activities such as reading a book or watching television, or simply to prevent the head from hanging.

For clarity, all of the foregoing serves to better understand the invention which will be described in detail below and which is limited to upholstered furniture with extendable footrests, reclining backrests and adjustable headrests.

In the following, a description is given of the operating modes of the upholstered furniture articles 1 existing and known in the state of the art, which are equipped with extendable footrests 12, reclining backrests 10 and adjustable headrests 11 operating in synergy. each other, as already shown in Figure 1 and Figure 2; in said article of upholstered furniture 1, the mechanism controlling the movement of said footrests 12 must be coupled with the mechanism that regulates the movement of said backrest 10, so that the activation of the footrest 12 implies, for reasons of ergonomics, a movement forward of the seat 13 and, therefore, of the backrest 10 and the headrest 11.

The traditional system described above has some critical negative aspects: from a structural point of view, a separation is necessary between the lower part 14 of the upholstered furniture article 1 and the rear part 15 of the backrest 10 so that the latter can move forward when the footrest 12 is extended; it turns out that an article of upholstered furniture 1 equipped with this type of mechanism should always have (at its back) a crack, a gap 16 (visible in Figure 1 and Figure 2) that inevitably affects its appearance and dictates the methods of related construction.

When it is desired that the article of upholstered furniture 1 also comprises an extendable footrest 12, the mechanism responsible for its movement must be coupled with the mechanism regulating the movement of the backrest 10 and the headrest 11 since, as indicated above, extend only the footrest 12, leaving both the backrest 10 and the headrest 11 in its original position, would result in an unduly ergonomic position in the sitting / relaxing position, which would be too uncomfortable and unsustainable over time; in fact, an extension of the legs of the user must be accompanied, according to the ergonomics laws, of a resting of the user's back and the user's head and, therefore, of a resting of the backrest 10 and a lifting of the headrest 11 in a harmonic movement that supports the structure of the human body, as shown in Figure 2.

To avoid the formation of the gap 16, it can be thought (having only the mechanisms known from the state of the art) either to make the movement of the footrest 12 independent of that of the backrest 10 or to join the seat 13 to the backrest 10.

However, these solutions would not be reasonably achievable because an article of upholstered furniture manufactured in this way would not only not meet the dictates of ergonomics and would have an unpleasant appearance, but would also be technically difficult and expensive to achieve.

In fact, in case it is desired to make an article of upholstered furniture where the extension of the footrest 12 and the forward movement of the seat 13 does not cause the forward movement of the rear part 15 of the backrest 10 to prevent the creation of the gap 16 at the rear, as shown in Figure 2, there would be a movement that would create a deep crack 30 between the backrest 10 and the headrest 11, which, as already indicated, would make the sitting / relaxed position uncomfortable and aesthetically unacceptable, as shown, only as a clarification, in Figure 3. Another negative aspect of the traditional system described above is found in the fact that the existing mechanisms have consistently large dimensions, as can be seen in Figure 4. The state of the technique closest to the present invention is represented by the following patent documents: patent application US-2012/112519 A1 published on 10 May 2012, patent application US-2013/062914 A1 published on March 14, 2013, European patent application EP-0 056 070 A1 published on July 21, 1982, published patent application GB-2417895 on March 15, 2006 and patent US-8146190 B1 granted on April 3, 2012.

All the documents of the aforementioned state of the art describe, mutatis mutandae, suitable devices for moving the backrest of an upholstered furniture and comprising an upper frame and a base frame mounted by fixings with an actuator that ensures the movement of the backrest.

None of the aforementioned prior art documents describes or suggests the independence of movement of said backrest of the lumbar support or the seat base comprised in an article of furniture, which is, therefore, a need not met until now. Furthermore, none of the above-mentioned prior art documents describes or suggests an upholstered article of furniture comprising a backrest / headrest, a seat base, a reclining lumbar support and an extendable footrest and which also incorporates a device for moving vertically said backrest / headrest independently of the movement of said seat base or of said lumbar support, which is, therefore, an additional and autonomous need not satisfied up to now.

Therefore, in this context, the present invention attempts to overcome all the problems of the prior art by providing a technical and inventive solution to the existing problems.

Objects and summary of the invention

The object of the present invention is to overcome the drawbacks of the state of the art.

In particular, the present invention is designed to allow the longitudinal, or lengthwise, sliding of the backrest of an upholstered article of furniture along an axis perpendicular to that of the seat, without the need for the seat and footrest, or the mechanisms which cause them to move, be attached or connected in some way (physically or functionally) to the backrest or to the mechanism designed to move the backrest, so that it is not necessary to provide a fissure in the rear part of the upholstered article of furniture.

The attractive appearance of the lines and shapes, the comfort of the seat and ergonomics are ensured by the introduction of a lower backrest that, while the backrest remains motionless, moves forward with the seat and reclines. An advantage of the device according to the present invention resides in the fact that it is considerably smaller than those of the state of the art, the former being able to save a depth of 10 cm, as can be seen in Figure 4 and in Figure 4A when comparing the system known with that of the present invention; for this reason, due to its specific construction and assembly characteristics, the device according to the present invention allows the realization of upholstered articles of furniture having a depth approximately 10 cm lower than that of traditional products. The smaller dimensions mean, therefore, that the realization of an article of furniture equipped with the present invention is carried out with a reduced use of raw materials such as frame, upholstery and covering; Said savings increases with the size of the upholstered article of furniture, which can, as is well known, reach a considerable size, such as in the case of an extra large sofa with multiple seats. It is understood that all the appended claims form an integral part of the present description and that each of the technical characteristics claimed therein is possibly independent and independently usable from the other aspects of the invention.

It is very evident that many changes can be made to what has been described (for example on the shape, dimensions, arrangements and parts with equivalent functionalities) without leaving the scope of protection of the invention as claimed in the appended claims.

Other advantageous features will be more apparent from the following description of preferred, but not exclusive, embodiments provided solely by way of example and not as limitation.

BRIEF DESCRIPTION OF THE DRAWINGS

All the features of the present invention will become apparent from the following description of a preferred embodiment provided by way of non-limiting example, with reference to the accompanying drawings in which: Figure 1 illustrates a side view of an article of upholstered furniture with a known traditional mechanism designed to move the backrest / headrest and the footrest, in the closed position;

Figure 1A illustrates, by dashed lines, the semicircular movement that a known traditional headrest (also called "ratchet" headrest) can perform;

Figure 2 illustrates a side view of an upholstered article of furniture with a known traditional mechanism designed to move the backrest and footrest, wherein the backrest is reclined and the footrest is extended; Figure 3 illustrates a known structural hypothesis where the extension of the footrest is not followed by a reclining of the backrest to avoid the gap in the rear part;

Figure 4 illustrates the traditional headrest system known as "ratchet" and shows, by means of broken lines, the semicircular movements it can make;

Figure 4A illustrates the system according to the present invention and shows, by means of dotted lines, the longitudinal movement that the backrest according to the present invention can perform;

Figure 5 illustrates a side view of an article of upholstered furniture equipped with the device according to the present invention in the backrest, said article of upholstered furniture also having a lumbar support and a seat with a footrest;

Figure 5A illustrates a side view of an article of upholstered furniture equipped with the device according to the present invention, in which the backrest has been moved upwards, the footrest is extended, the seat has been moved forward and the lumbar support is reclined

Figure 6 illustrates an exploded perspective view of the device according to the present invention comprising an upper frame, a rail system comprising guides and sliding bodies, a lower frame serving as a base and comprising two fixings to fix them on the guides of the system of rails;

Figure 7 illustrates a perspective view of the device according to the present invention forming a single frame mounted with an electric linear actuator piston fixed to both upper and lower frames; Y

Figure 8 illustrates a perspective view of the device according to the present invention wherein the electric linear actuator piston is elongated, having driven the upper frame along the rail system.

Detailed description of the invention

Although the invention is susceptible to various modifications and alternative forms, some relevant embodiments described will be shown in the drawings which will be described in greater detail below. It should be understood, however, that it is not intended to limit the invention to the specific embodiment described, but, on the contrary, the intention of the invention is to cover all modifications, alternative forms and equivalents included in the scope of the invention defined in The claims.

The use of "for example", "etc.", "or" indicates non-exclusive alternatives without limitation, unless defined otherwise. The use of "included" means "included, but not limited to," unless otherwise defined.

According to a first aspect, a device suitable for mounting in an article of upholstered furniture is described, said article of upholstered furniture having a base, a seat with a footrest, a backrest that also serves as a headrest and a lumbar support.

The principle resides in that said device is designed to move the backrest / headrest longitudinally, or lengthwise, with respect to the base of the upholstered article of furniture and completely independently of the seat and the lumbar support.

In particular, what is described herein is a device 101 designed to move longitudinally with respect to the base of an article of upholstered furniture 100 on which the backrest 51 of said article of upholstered furniture 100 is mounted, the article of which Upholstered furniture 100 also includes a lumbar support 50 and a seat 52 with a footrest 53, whose backrest 51 also serves as a headrest, completely independent of the seat 52 and the lumbar support 50 and designed to move vertically, and comprising: an upper frame 60, two rail systems, a frame serving as base 64, a piston 70 electric linear actuator, wherein the upper frame is joined to the base frame by means of a pair of rail systems, the guides 61 being joined, 61a of the rail system to the upper frame and joining the sliding bodies 62, 62a of the rail system by means of fixings 63, 63a of the frame serving as a base. and, the upper frame being designed to move longitudinally along the axis of the rail system by means of an electric linear actuator piston 70, the electric actuator of which is connected to the upper frame and to the base frame by means of two perforated fixings 65 and 66. , said frames 60, 64 constituting a single frame 80, whose single frame, after the actuator is mounted, is designed to be inserted inside the backrest of the upholstered furniture article and designed to generate the vertical movement of the backrest of the article of furniture completely independently of the movement of the seat 52 and the lumbar support 50, both the seat 52 and the lumbar support 50 being separated from the backrest and the mechanism being designed to move the lumbar support 50 and the seat 52 separated from the frame 80.

Furthermore, the present device 101 is characterized by the fact that the single frame 80 mounted is designed to be inserted into the back 51 of the upholstered article of furniture, said backrest 51 being unattached to the lumbar support 50 and without joining the seat 52, the lumbar support 50 simply resting on said backrest 51.

In addition, the present device 101 is characterized in that the single frame 80 mounted is designed to be inserted into the back 51 of the upholstered article of furniture, said single frame being unattached to the mechanism designed to move the lumbar support 50 and unjoined to the mechanism designed to move the seat 52.

According to the invention as defined in claim 1, an article of upholstered furniture is described, said article of upholstered furniture having a base, a seat with a footrest, a backrest that also serves as a headrest and a lumbar support and also incorporating a device which can move the backrest / headrest longitudinally, or lengthwise, with respect to the base of the upholstered article of furniture and completely independent of the seat and the lumbar support.

In particular, what is described herein is an article of upholstered furniture 100 comprising a backrest 51, a lumbar support 50 and a seat with a footrest 52, said backrest also serving as a headrest, characterized by the fact that also comprises a device designed to move, longitudinally with respect to the base of the upholstered furniture article on which it is mounted, the backrest of said article of upholstered furniture, completely independent of the seat and the lumbar support and designed to move vertically, and which comprises: an upper frame 60, two rail systems 61, 61a, a base frame 64, a piston 70 electric linear actuator, wherein the upper frame is joined to the base frame by means of a pair of rail systems, the rail system guides joining said upper frame and joining the sliding bodies 62, 62a of the rail system to the frame fixings 63, 63a serving as the base, the upper frame being designed to move longitudinally along the axis of the rail system by means of a linear electric actuator piston 70, whose electric actuator it is attached to the upper frame and to the base frame by means of two perforated fasteners 65 and 66, said frames 60, 64 constituting a single frame 80, whose single frame, after the actuator is mounted, is designed to be inserted inside. of the backrest of the article of upholstered furniture and designed to generate the vertical movement of the backrest of the article of furniture completely independently of the movement of the seat 52 and the lumbar support 50, both the seat 52 and the lumbar support 50 being separated from the backrest and the mechanism being designed to move the lumbar support 50 and the seat 52 separated from the frame 80.

In addition, the present article of upholstered furniture 100 is characterized in that the single frame 80 is designed to be inserted into the back 51 of the upholstered article of furniture, said backrest 51 being unattached to the lumbar support 50 and unattached to the seat 52 , the lumbar support 50 being simply supported on said backrest (51). In addition, the present article of upholstered furniture 100 is characterized in that the single frame 80 is designed to be inserted into the back 51 of the upholstered article of furniture, said single frame being unattached to the mechanism designed to move the lumbar support 50 and without joining the mechanism designed to move the seat 52.

With reference to Figure 4A, an article of upholstered furniture 100 incorporating the device of the present invention is shown; in particular it can be seen that, due to the specific construction and assembly characteristics of said device, the article of upholstered furniture 100 occupies a space that is practically smaller than that occupied by the traditional furniture shown in Figure 4, ie , the article of upholstered furniture 100 of the invention has a depth approximately 10 cm lower than that of traditional products.

With reference to Figure 5, the article of upholstered furniture 100 comprises a support base 54, a seat 52 with a footrest 53, a backrest 51 (which also acts as a headrest) and a lumbar support 50, all the elements being in one "closed" or sitting position; Figure 5a shows the attractive appearance of the lines and shapes, the comfort of the seat and the ergonomics which are ensured by the introduction of the lower lumbar support 50 which, although the backrest 51 remains immobile, moves forward with the seat 52 and is reclines.

In particular, the article of upholstered furniture 100 comprising a backrest 51 that also serves as a headrest, a lumbar support 50 and a seat 52 with a footrest 53 is characterized in that it also comprises a device 101 designed to move vertically and designed to move said backrest 51 longitudinally, or along, with respect to the support base 54 of the upholstered furniture article 100 on which it is mounted and completely independent of the seat 52 and the lumbar support 50.

The movement described above is made possible by the device 101 of the present invention which, once introduced into the article of upholstered furniture 100, is capable of longitudinally moving the backrest 51 (in one way, ie, longitudinally, which also acts as headrest) and completely independently of the seat 52, thus eliminating the need to provide a crack in the rear part of the upholstered furniture article 100 and, therefore, improving the appearance of the upholstered furniture article 100, reducing the overall size of the article of upholstered furniture and thus allowing a more efficient use of manufacturing materials.

With reference to Figure 6, the device 101 of the present invention is shown.

The device 101 comprises a first upper frame 60 comprising two first sides 60a, 60b; at least a pair of rail systems, each of which is constituted by a guide 61, 61a and by a sliding body 62, 62a; a second lower frame 64 comprising two fixings 63, 63a.

The guides 61, 61a of the rail systems are joined to the upper frame 60 and the sliding bodies 62, 62a are attached to the fixings 63, 63a of the second frame serving as the base 64.

Said upper frame 60 is designed to move longitudinally, or longitudinally, along the axis of the rail systems when being driven by an electric linear actuator piston 70, which can be seen in Figure 7 and Figure 8; said piston 70 electric linear actuator is attached to the upper frame 60 and to the lower frame 64 by two systems of perforated fasteners 65 and 66, respectively.

As can be seen in Figure 7 and Figure 8; said upper 60 and lower frames 64 form a single frame 80 mounted, which can be inserted in the back 51 of the article of upholstered furniture 100 and which allows, once inserted, the longitudinal movement, or along the back 51 of the article of furniture upholstered 100 which is substantially independent of the movement of the seat 52 and the lumbar support 50.

It should be noted that the lumbar support 50 is included in the article of upholstered furniture 100 to ensure the comfort and ergonomics of the sitting / relaxing position.

The characteristics of the mechanism described above allow the embodiment of the article of upholstered furniture 100 shown in Figure 5 and Figure 5A, equipped with an extendable footrest 53, a reclining lumbar support 50 and a backrest 51 that, being able to rise and get off, it also acts as a headrest.

After the extension of the footrest 53, the seat 52 moves forward (as in traditional systems) with the particularity that said seat 52 is not attached to the backrest 51, but is attached to the lumbar support 50 (physically and mechanically separated from the backrest 50). backrest / headrest 51) designed to recline following the movement of the seat 52 and the extension of the footrest 53, leaving the vertical backrest 51, whose height furniture element can be adjusted, as shown in Figure 4A, for a comfortable support of the head of the user.

As can also be seen when comparing Figure 5 and Figure 5A, on the one hand, and Figure 1 and Figure 2, on the other hand, the present invention allows the realization of absolutely superior aesthetic forms, avoiding the formation of the gap 16 of the state of the technique, reducing the overall dimensions of the known headrests (referred to as "ratchet" headrests) and allowing their realization with the use of less material compared to that necessary to realize the mechanisms known in the art.

Next, a presently preferred embodiment for the embodiment and execution of the present invention is described in the specification; this preferred embodiment is described in detail for illustrative purposes only, since the invention can be made in any size, or in different proportions than those listed, and with different materials and manufacturing techniques.

The invention comprises a piston 70 electric linear actuator; a first upper frame 60 having a width of 730 mm with two first sides 60 a and 60 b, each having a length of 390 mm; a second lower frame 64 having a width of 730 mm with two fasteners 63, 63a, each having a length of 160 mm; two guides 61, 61a, each 360 mm long.

The two guides 61, 61a are firmly joined to the upper frame 60 by means of welding. The sliding bodies 62, 62a are connected to the lower frame 64 by means of four pins having a diameter of 6 mm each.

The electric linear actuator piston 70 is attached to the two frames 60, 64 by two perforated fastener systems 65, 66; the perforated fixings 65 of the upper frame 60 are parallel to each other, each of which is 30 mm long and 30 mm apart from each other.

Finally, the electromechanical device 101, specifically the electric linear actuator piston 70, is suitable for connecting it (and is connected during operation) to a switch (not shown in the figures) powered by an electric cable connected to the power source of the electrical network or by a lithium battery or by a different known energy source, which allows the operation of said device 101.

As can be seen in Figure 8, activation of the electric linear actuator piston 70 will cause the upper frame 60 to slide upward by vertically moving the backrest / headrest 51 of the upholstered article of furniture 100.

Therefore, from the above description it becomes evident how the device of the present invention and the relevant upholstered article of furniture incorporating said device allow reaching the aforementioned objects.

It is also evident to a person skilled in the art that it is possible to make changes and other variants to the solution described, without thereby departing from the teaching of the present invention and the scope of protection as defined in the appended claims.

Claims (1)

An article of upholstered furniture (100) comprising a lumbar support (50), a backrest (51) that also acts as a headrest, a seat (52), a footrest (53) and a support base (54), which also comprises a device (101) inserted into said backrest / headrest (51), wherein said device (101) comprises a first upper frame (60), two rail systems comprising two guides (61, 61a) and two corresponding sliding bodies (62, 62a), a second lower frame (64) serving as base and comprises two fixings (63, 63a) and a piston (70) electric linear actuator, and wherein said first upper frame (60) is attached to said second lower frame (64) by means of said two rail systems, joining the guides (61,61a) of the rail systems to said first upper frame (60) and joining the sliding bodies (62, 62a) of the rail systems to the fixings (63, 63a) of said second lower frame (64). ), said first upper frame (60) being designed to move longitudinally along the axis of the rail system driven by said electric linear actuator piston (70), whose electric linear actuator piston (70) is attached to the first upper frame (60) and to the second frame i lower (64) by means of perforated fixings (65, 66), and wherein said first and second upper frame (60) and lower frame (64) form a single frame (80) mounted on which said electric linear actuator piston (70) is mounted, and wherein said device (101) inserted into said backrest / headrest (51) of said article of upholstered furniture (100) can generate the vertical movement of said backrest / headrest (51) of said article of upholstered furniture (100) completely independently of the movement of said lumbar support (50) and said seat (52), and wherein said backrest / headrest (51), when operated by said device (101), moves vertically, longitudinally with respect to the support base (54) of said article of upholstered furniture (100), and completely independently of said lumbar support (50) and of said seat (52), characterized in that both said lumbar support (50) and said seat (52) are separated from said backrest / headrest (51) and that the article of furniture comprises mechanisms designed to move the lumbar support (50) and the seat (52), the mechanisms being separated from the single frame (80) mounted on said device (101). An article of upholstered furniture (100) according to claim 1, characterized in that said assembled single frame (80) is inserted inside the backrest (51) of the article of upholstered furniture, said backrest (51) being unattached nor to the lumbar support ( 50) or to the seat (52), the lumbar support (50) being simply supported on said backrest (51). An article of upholstered furniture (100) according to claims 1 and 2, characterized in that said single frame (80) assembled is not attached either to the mechanism designed to move the lumbar support (50) nor to the mechanism designed to move the seat (52). ). An article of upholstered furniture (100) according to any of claims 1 to 3, characterized in that said device (101) being consistently small, is able to save more than 10 cm in depth.