ES1212268U - BACKING FOR ARMCHAIRS WITH RUBBISH PUPITER (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Backrest for stools with retractable desk, which being of the type that incorporate in its rear area a housing for a tilting box from which a desk is removable, is characterized because it is constituted from a metal frame (1), with its corresponding anterior padding (2), in which rear area is defined a cavity (3) open inferiorly, in which plays a box (4), from which a desk (5) is removable, with the particularity that the box (4) presents dimensions in elevation according to the hollow that is defined later in said metal frame (1), so that in inoperative situation it is flush with it, it being provided that said box (4) includes recesses (6) with a rounded bottom, on its sides, in its intermediate zone, which rest on cylindrical supports (7) acting as axes of rotation for the box by its intermediate zone, and which emerge from the internal sides of the cane idor (1) in said intermediate zone, so that in the tilting position of the cassette (4) and removal of the desk (5), in the backrest a lower recess is defined due to the introduction of the lower end of the cassette (4) in the sine of said frame, while in an inoperative situation or of picking up the desk (5) the box (4) completely closes the hole that is defined later in said metallic frame (1). (Machine-translation by Google Translate, not legally binding)

Description

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BACKUP FOR ARMCHAIRS WITH SCAMOTABLE PUPITRE

DESCRIPTION

OBJECT OF THE INVENTION

The present invention relates to a backrest for armchairs, of the type used in exhibition halls and the like, arranged in parallel rows, and which in its rear area include a retractable desk that in an inoperative situation is inserted in a box, so that the same does not constitute an obstacle for the users, either when they are sitting in the armchair, or when traveling between the rows of seats.

The object of the invention is to provide a backrest for seats with retractable desk that, by virtue of its special configuration, allows maximizing the space available for the user's legs.

The invention is especially applicable in seats that are arranged in stands, that is, at different heights, where the feet of the user of the desk or table are at the height of the lower part of the backrest of the armchair from which said desk emerges, optimizing thus the space in this type of facilities, offering therefore a greater comfort of use.

It is also the object of the invention to provide a structurally simpler, easy to assemble backrest that significantly reduces the installation time of the seats.

BACKGROUND OF THE INVENTION

Within the practical scope of the invention, seats are known on whose back a box is integrated from which a desk is removable for use by the person sitting in the row of seats immediately after.

The problem presented by this type of backup is that although the desk inoperative situation is housed inside the aforementioned box, this box is an element

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prominent that subtracts space between rows, which forces to separate the seats a certain distance, which obviously affects negatively the optimization of the available space of the auditorium or room in question.

Trying to obviate this problem, the utility model U201200093 is known, in which a multifunctional backrest for seats is described, in which a back and rigid frame participates, which receives by its previous mouth the padded elements constituting the backrest itself, and subsequently opened, said frame constituting a housing for a box, flattened, open superiorly, capable of tilting a small angle through its lower end zone, and housing in its bosom a constitutive plate of a retractable desk, which in situation Inoperative, it is housed integrally inside the box and, in an operating situation, forms an obtuse angle with said box, while at the same time adopting a limit and stable position close to the horizontal.

While it is true that with this solution it is possible to reduce the volumetric occupancy of the desk container container, it is no less true that said box is housed within a frame, which must be returned with respect to the thickness that a frame could have of an armchair of this conventional type, so that, when said box is tilted with respect to the frame through its lower extremity, it will always have a constant horizontal dimension, in this area of the armchair, and where appropriate in the lower area of the frame, if it is closed, regardless of whether the desk is extended or retracted, being the limit that determines the space between rows of seats.

In addition, this special structuring means that, for aesthetic reasons, the space defined between the box and the lower edge of the armchair frame must be closed by means of a cover that is flush with said box, without affecting its tilting, which increases the tilt. number of parts of the armchair and consequently complicates its assembly and makes the final price of the product more expensive.

In this sense, the assembly of this type of armchairs in which the utility model U201200093 usually materializes is also complex, since it is necessary to send the bodies separately from the backrest, desk and cover, because its system of Assembly is carried out by means of transverse screws, which must be hidden with the aforementioned cover after fixing.

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DESCRIPTION OF THE INVENTION

The backrest for seats with retractable desk that is recommended solves in a completely satisfactory way the problem previously exposed, in the different aspects mentioned, based on a simple but extremely effective solution.

For this, the backrest of the invention is formed by a metal frame that comes out next to the injected mold and that in its back forms a cavity that will be used for the placement of the desk as a whole. Said cavity is open inferiorly, that is to say, that there is no lower cross member in it

More specifically, the retractable desk is arranged in a box, which, unlike the previously mentioned backrests, swings by its intermediate zone.

Said box, obtained on the basis of folded sheet and that houses the corresponding removable desk, has dimensions in elevation according to the hole defined by the aforementioned metal frame, in order to be in an inoperative situation, that is to say, the collection of the desk, is flush with the aforementioned frame by its back or sight.

The aforementioned box contains some openings in the sides in the middle part of the latter and that will rest on supports that will contain the metal frame of the backrest and that will be located one on each side in an intermediate area in height and on which said box will rotate , allowing the table to be evicted and used.

In this way, the box has a monobody character, which houses the desk, covering and using all the free space offered by the backrest on its back, thus avoiding the need for covers or other additional and accessory parts that could complicate the assembly and increase the price of the final product.

From this new tilting axis for the box, a greater space is obtained to give the user greater comfort, because as the whole desk rotates in its intermediate zone, the entire lower part of the desk is introduced into the space of the backrest in its lower part, obtaining an extra 3 or 4 cm of space.

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This solution is of special application for the seats installed in the stands, where the user's feet of the table / desk are arranged at the height of the lower part of the backrest, a space that with the special configuration of the backrest of the invention is increased, being used by the user providing greater comfort.

In addition, the form used for fixing the backrests to the sides allows not having to incorporate in the lower free space of the backrest the classic holes for fixing the backrest as the seats described in the background section of the invention.

From this structuring, the lower back space of the backrest is completely clear to gain space without problems and even to house any necessary device be plug, USB ...

It is worth noting the ease when mounting the backrest "in situ", since as the desk next to the backrest arrives factory assembled, only the backrest must be fixed in the guided system that will contain the side and it will be ready for use .

As for the means of immobilization of the desk, means of any conventional type may be used, either by magnets or similar.

To limit the tilt of the box, to the folded metal sheet that acts as a box and that houses the table, a transverse metal tube with holes located horizontally is added.

The backrest in its lower part, contains a transverse plate that contains two rods facing the desk easily manipulated. When the desk as a whole is inserted into the backrest cavity, these rods fixed on the backrest plate enter the holes housed in the transverse tube that contains the box and which will act as safety stops so that no user can dislodge the desk of the backrest.

In addition these stops will have the correct length so that the whole desk rotates at its maximum useful angle and these rods collide with the wall of the box in its

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maximum tilt and can be used correctly.

Regarding the tilting of the table or desk, it will incorporate, as is conventional in this type of devices, stops limit the exit of the desk and the maximum tilting for the same, corresponding to its operational position, forming an obtuse angle with the box, while adopting a limit and stable position close to the horizontal.

DESCRIPTION OF THE DRAWINGS

To complement the description that will then be made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:

Figure 1 shows a perspective view of a backrest for seats with retractable desk made in accordance with the object of the present invention, in an inoperative position for said desk.

Figure 2.- Shows a view similar to that of the previous figure, but in which the box appears in a tilting situation, a previous position necessary for the removal of the desk.

Figure 3.- Shows a view similar to that of Figure 2, but in which the desk appears in use situation.

Figure 4.- Shows a profile view of two seats installed in a stand, with the back of the invention in use for your desk, showing how the user's feet can be arranged internally to the external structure of the chair immediately before .

Figure 5.- Shows a perspective view of the backrest devoid of its padding.

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Figure 6.- Shows an enlarged detail of the backrest at the height of the tilting means for the box.

Figures 7 and 8.- Finally show respective details of the means for limiting the rotation of the box, in its two working limits.

PREFERRED EMBODIMENT OF THE INVENTION

In view of the aforementioned figures, it can be seen how the backrest for seats with retractable desk of the invention is constituted from a metal frame (1), with its corresponding anterior padding (2), in whose rear area a cavity is defined (3) open inferiorly, in which a box (4) plays, from whose breast a desk (5) is removable, with the particularity that the box (4) in an inoperative situation, the one shown in Figure 1, presents dimensions in elevation according to the hollow that defines the aforementioned metal frame, so that it is flush with it.

According to one of the main features of the invention, the box (4) obtained on the basis of folded sheet, swings through its intermediate zone,

For this, and as can be seen in the detail of Figure 6, the box contains rounded bottom recesses (6), on its sides, in its intermediate zone, which are supported on cylindrical supports (7) in function of rotation axes for the box, and emerging from the internal sides of the frame (1) in said intermediate zone.

Thus, and as stated above, the box (4) has a monobody character, which houses the desk (5), covering and using all the free space offered by the backrest at its back, thus avoiding the Need for caps or other additional parts.

This structuring allows a greater space to be obtained when the desk (5) is removed, of the order of 3 or 4 cm with respect to the lower area of the frame (1), when the box (1) is introduced into the frame (1) in said lower zone.

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For its part, the backrest will incorporate lateral guides (8), visible in figures 1 to 3, for plugging into the sides of the seats (9) (see figure 4), so that this maneuver is extremely simple and comfortable , allowing to bring from the factory all the assembly of the backrest already mounted, including the box (4) and the desk (5), so that it is only necessary, as just said, to plug said backrest to the sides of the armchair through the aforementioned lateral guides, being ready for use.

To limit the tilt of the box, and according to figures 7 and 8, a metal transverse tube (10) with holes (11) is added to its face to the folded sheet metal that acts as a box (4) previous.

For its part, the frame (1) of the backrest in its lower part, contains a transverse plate (12) that contains two rods (13) oriented towards the box (4), equipped with positional adjustment means.

In this way, and as shown in the aforementioned figures 7 and 8, when the box with the desk is inserted into the backrest cavity, these rods (13) fixed on the back plate (12) enter the holes (11 ) housed in the transverse tube (10) that contains the box (4) and that will act as safety stops so that no user can dislodge the desk from the backrest, also regulating the degree of tilt for said box, when making stops.

As for the means of positioning, tilting and retention of the desk (5) these will be of any conventional type, since they are elements well known in the sector.

Claims (1)

5 10 fifteen twenty 25 30 1a.- Backrest for armchairs with retractable desk, which being of the type of those that incorporate in its rear area a housing for a tilting box from whose breast a desk is removable, is characterized because it is constituted from a metal frame (1) , with its corresponding front padding (2), in whose posterior area a cavity (3) open inferiorly is defined, in which a box (4) plays, from whose breast a desk (5) is removable, with the particularity that the box (4) has raised dimensions according to the hole that is defined later in the aforementioned metal frame (1), so that in an inoperative situation it is flush with it, it being provided that said box (4) includes recesses ( 6) with a rounded bottom, on its sides, in its intermediate zone, which are supported on cylindrical supports (7) in function of rotation axes for the cassette through its intermediate zone, and which emerge from the internal sides of the ba stidor (1) in said intermediate zone, so that in the tilting position of the box (4) and removal of the desk (5), a lower gap is defined in the back due to the introduction of the lower end of the box (4) in the bosom of said frame, while in an inoperative or collecting position of the desk (5) the box (4) is completely blocking the gap that is defined later in said metal frame (1). 2nd.- Backrest for seats with retractable desk, according to claim 1a characterized in that it includes lateral guides (8), for installation by plugging on the sides of the seats (9). 3a.- Backrest for seats with retractable desk, according to claim 1a characterized in that it includes means for limiting the degree of tilt of the box (4), in which to said box (4) a transverse metal tube (10) is added with some holes (11) on its front face, complementary to respective rods (13) emerging from a transverse plate (12) provided in the lower part of the metal frame (1), rods (13) which include positional adjustment means.