FR2963080A1 - Bed standing desk for computing and multimedia medium of portable computer, has tightening device fixing frame and lateral beam and receiving and supporting arm on top of device to carry types of medium - Google Patents

Abstract

The desk has a bed and inversed U-shaped frame tightening device (1) with a short side inserted between a mattress and a lateral beam of a bed, and a long side jointly integrated to welded nuts that receive clamps. The device fixes an inversed U-shaped frame of the bed and the lateral beam of the bed and receives and supports an articulated arm (4) on top of the device to carry types of computing and/or multimedia medium and raise ventilation systems with respect to the mattress and a user.

Description

DESCRIPTION

The present invention relates to "a lectern" or more commonly a "bedding computer tray". This jib-shaped device is non-permanently fixed to the lateral beam of any bed structure, and has a platform for carrying any media or multimedia and / or computer technologies not exceeding the maximum size. a 17-inch notebook PC and the maximum weight of 5KG included. Thus, it raises relative to the mattress and its user, the (s) ventilation system (s) of all types of media or multimedia and / or computer technologies, respectively protecting and improving the health and 101st comfort of the user , and optimally sustaining the life expectancy of this kind of technological support when used in this kind of setting. Currently there is no sufficiently sturdy desk that can not only be fixed on his bed, but is also able to carry a laptop in bed regardless of its user, while preserving the ventilation system of the computer. In addition, the problem is threefold: how to combine technically fixation, independent use, mobility and protection in the context of bedding. In view of this, we have not only realized the technical and scientific shortcomings that may be related to this type of product, but also the industrial non-feasibility of previously proposed patents. The technical difficulty lies in the type of fastening, sizing and ergonomics of such a desk. It must be light, adjustable, swivel, easy to use, low in heat conductor, recyclable and able to be stored easily without leaving the bed. Therefore, the objective of the present invention is to try to create a principle stem combining these features and which is capable of supporting a maximum weight of 5 kilos, specifically for multimedia and computer media not exceeding the size of a computer 17 inches included, and the assembly and disassembly takes place in less than 3 minutes. Our invention meets all these requirements. Indeed, our analysis is based on the principle that the desk works in "traction - compression - flexion". Therefore, we have worked three complementary systems: The present desk is composed of a plurality of interconnected systems so that they form only one general inventive concept

- a clamping device of the bed frame (1) - three alternative lower link systems (2), (2) (bis) and (2) (ter) - and an upper bent connecting device (3) and its symmetrical (3 (bis)) comprising a tube storage system (5) (5 (bis)) and a tube pivot system (6) (6 (bis))

If one attaches firstly to the clamping device of the bed frame in the shape of an inverted "U" (1), it is observed that it consists of a plane surface on its top (a) making it possible to weld or screw the lower link of the bracket (4), a short side (b) can be inserted between the mattress and the lateral beam of a bed and a long side opposite (c), the latter jointly integrating two welded nuts for accommodating two joined greenhouses (d), which are individually composed, of a "vise screw" (e) and a "vice support" (f) (f ') . This clamping device, which can be of various sizes, allows not only to be fixed on the frame / side beam of any bedding, but is also intended to accommodate and support on its top a bracket (4) " articulated ", which allows not only to carry all types of media or multimedia and / or computer technologies not exceeding the size of a 17-inch laptop included and the maximum weight of 5Kg included, but also and especially to allow to elevate the ventilation system (s) from the mattress and its user; protecting and 50 respectively improving the health and comfort of the user, and optimally sustaining the life expectancy of this kind of technological support when used in this kind of framework.

If we are interested in starting the lower link, we propose three alternative 55 systems of gallows mobility.

a system (2) composed of grooves / grooves only a system (2) (bis) composed by the combination of a nut / screw set and a pin - and a system (2) (ter) composed by the combination of It is necessary to point out that each lower link has a lower tube of its own. The first system (grooves only) is a lower connection device (2) welded or screwed together. on the flat surface (a) of the clamping device of the bed frame (1), which has within it a system of "guide groove" or "grooves" machined symmetrically on both sides of the lower link, namely semicircular grooves ranging from 0 ° to 180 °, composed of left grooves (h) (h ') and straight grooves (i) (i'), and vertical grooves (j) (j) '), being respectively the axes of perpendicular symmetry of the semicircular grooves (h + i) (h' + i ') (left and right). The grooves (h) (h ') (i) (i') (j) (j ') are intended to accommodate the outgoing ends (nipples) of the 70 rods of force at the base and passing right through outer lower tube (o) of the stem (4), namely two opposite upper nipples (k) (k ') and two opposite lower nipples also (1) (1'), which fit and slide in the grooves the lower link (2); so that when the outer lower tube (o) is in a vertical position, the upper (k) (k ') and lower (1) (l') pads thereof are aligned and fully engaged to the base ( x) of the lower link 75 (2) in the vertical grooves (j) (j '), which furthermore includes an opening (y ") on the top to facilitate machining, whereas when it is desired to the outer lower tube (o) in one of the two elongate positions, it suffices to pull said tube upwards along the vertical grooves (j) (j '), in order to disengage it from the base (x) of the connection lower, then engage only the "upper pads" either to the left furrows (h) (h ') or right (i) (i'), to obtain 80 the elongate position, the desired side. This lower link makes it possible in the end, not only to fix, support, direct and deploy the outer lower tube of the articulated stem, along a horizontal axis, on three positions. ns major: two elongated positions "natural" left and right of the clamping device, and parallel to the beam of the bed, and a vertical position, perpendicular and blocked; but also inevitably reduce, coupled with a system 85 interlocking (3 or 4 tubes in 1 only) offered by the upper bent (3) 3 (bis)), space congestion optimally.

The second system (bolt only) is a lower connecting device (2) (bis) welded or screwed onto the flat surface (a) of the clamping device of the bed frame (1), which provides therein a 90 system nut and screw passing through both and from the lower link (2) and the lower outer tube of the bracket (4) in (v) and (v '); allowing then a rotation along a horizontal axis with three major positions: two elongated positions to the left and right of the vice, and parallel to the beam of the bed, but also a vertical position and perpendicular to the beam of the bed. In each of the three positions, the outer lower tube (o) is blocked 95 manually by means of an additional pin passing through both (v ") and (v" (bis)).

The third and last system (grooves plus screw / nut) is a lower connecting device (2) (ter) screwed or welded to the flat surface (a) of the clamping device of the bed frame (1), which has in its in a combined system: on the one hand, a system of nuts and bolts passing 100 times through the lower link (2) and the outer lower tube (o) of the stem (4) ) in (w) and (w '); thus allowing the latter to rotate along a horizontal axis with three major positions: two "natural" elongated positions on the left and right side of the clamping system of the bed frame, and this parallel to the beam of the bed, but also a vertical position , natural and perpendicular to the bed beam; And secondly, a machined "groove guide" system 105 symmetrically on both sides of the lower link, namely semicircular grooves ranging from 0 ° to 180 °, composed of left grooves (H) ( H ') and straight grooves (I) (I'), and reduced vertical grooves (J) (J ') including an opening (y "(bis)) on the top to facilitate machining, combined with the system The alignment of the reduced vertical grooves and the screw / nut system represents the perpendicular axis of symmetry of the semicircular grooves (H + I) (H '+ J). '(left and right) .The grooves (H) (H') (I) (I ') (J) (J') are intended to accommodate the nipples located above the nut / screw system ( w) (w ') and at the base of the outer lower tube (o) of the bracket (4), namely two opposed studs (K) (K'), which fit and slide in the grooves of the link lower (2), so that when the outer lower tube (o) is e n vertical position, the upper lugs 115 (k) (k ') thereof are aligned and fully engaged in the reduced vertical grooves (J) (J'), to the base (x ') of the lower link (2). This commitment absolutely and simultaneously requires that the nut / screw system is positioned within the longer perforations of the outer lower tube (o) intended to accommodate said system in the highest configuration; whereas when it is desired to put the outer lower tube (o) in one of the two elongated positions 120, it suffices to pull said tube upwards from its base (x ') according to the reduced vertical grooves (J) (J '), then simultaneously disengaging the nut / screw system from its highest configuration for the lowest preferred, then engaging only the upper nipples (k) (k') or towards the left grooves ( H) (H ') or on the right (I) (I'), in order to obtain the elongate position, on the desired side. This lower link makes it possible in the end, not only to fix, support, direct and deploy the outer lower tube of the articulated stem, along a horizontal axis, in three major positions: two "natural" elongated positions on the left and on the left. right of the clamping device, and parallel to the beam of the bed, and a vertical position, natural and perpendicular; but also inevitably to reduce, coupled with an interlocking system (of 3 or 4 tubes in only 1) offered by the upper bent connection (3) (3 (bis)), space congestion in an optimal manner 130 .

Finally, the lower and upper tubes are connected by an upper bent connecting device (3) and its symmetrical (3 (bis)) which integrates within it a joint and combined system: On the one hand, a system storage of the tubes (5) and its symmetrical (5 (bis)), on the other hand, a pivot system of the upper tubes (6) and its symmetrical (6 (bis)) .. 135 First, the tube storage system (5) (5 (bis)) has at its center a machined tube-shaped guide space (m) (m (bis)), containing a symmetrical lug / protrusion (z) ) (z (bis)) - composed of a vertical subspace (m ') (m' (bis)) perpendicular to the horizontal subspace (m ") (m" (bis)) - as well as a another complementary guide space machined in quarter-circular form (n) (n (bis)) separated from (m) (m (bis)) by a protrusion (n ') (n' (bis)). It is the combination of these two forms of symmetrical space (m) (m (bis)) (n) (n (bis)) and their respective growths that make it possible to receive, deploy and / or store the (s) upper tube (s) (p) (p ') or only (p). the lugs or protuberances (z) (z (bis)) and (n ') (n' (bis)), of the tube storage system (5) (5 (bis)) forming an integral part of the upper bent connection ( 3) (3 (bis)), are intended to engage 145 and slide within the grooves (z) (z '(bis)) of the tube (p). This system of lugs / grooves is necessary and complementary to the spaces (m) (m (bis) and (n) (n (bis) both for directing the outer upper tube through the spaces (m) (m (bis) )) / (n) (n (bis)) and prevent it from falling out of the bent upper link (3) (3 (bis)) during its storage or deployment, since the horizontal subspace (m ") ) (m "(bis)) of the space (m) (m (bis)) has not only an opening (y) in its upper part, offering the possibility of lifting, vertically and turning around the lugs (z) (z (bis)) engaged in the grooves (z ') (z "), the outer upper tube (p) and its inner tube (p') both uniformly circular, but also a laying zone (y ') (y' (bis)) to support the weight of the outer upper tube (p) in the horizontal extended position The vertical subspace (m ') (m' (bis)) allows to slide the fixed lugs (z) ) (z (bis)) within the grooves (z ') (z ") of the upper outer tube (p) at inside the lower inner tube (o '). The quarter-circular space (n) (n (bis)) is separated from the space (m) (m (bis)) by the outgrowth (n ') (n' (bis)), and allows the passage upper tubes (p) (p ') from the horizontal position to the vertical position, and vice versa. When it is desired to arrange by fitting the tubes (p) (p ') or only (p), if (p') is non-existent, within (o ') (o), it is necessary to lift ( s) top tube (s) (p) (p ') or 160 only (p) at 90 ° through open space (y). This movement is also possible thanks to the lug (z) (z (bis)) located in the surface (m ') (m' (bis)) of the tube storage system (5) (5 (bis)) . Indeed, the grooves (z ') (z ") are naturally rotated around the lugs (z) (z (bis)) .Therefore, this makes it possible to disengage the outgrowth (n') (n '(bis) ) from the lower end of the upper tube (p), and out of the quarter-circular space (n) 165 (n (bis)) until it reaches the maximum vertical position. to direct the tubes vertically (p) (p ') or only (p) towards the lower link (2), (2 (bis)) or (2 (ter)) by sliding the lugs (z) (z (bis) )) within their grooves (z ') (z "), until reaching the desired nesting level. The lugs (z) (z (bis)) or the horizontal clamp (p "), depending on the assembly chosen, can then act as an abutment, depending on the engagement level 170 chosen. it is desired to deploy the bracket (4), in order to switch to a horizontal position, it is sufficient either to block together the upper inner tube (p ') and the upper outer tube and circular (p), thanks to the horizontal clamping collar (p "), or only (p") on (p) if (p ') is non-existent, then pull the upper tubes (p) (p') or only (p) upwards, in the direction of the upper bent link (3) (3 (bis)), through the end of the opening (y), according to the vertical guide subspace (m ') (m' (bis)), up to the symmetrical and opposite grooves (z ') (z ") of the tube (p) are locked by the lugs (z) (z (bis)) serving as a stop therefor. Then, before reaching the horizontal position offered by the horizontal guiding subspace (m ") (m" (bis)), the last end of the outer upper tube (p) emerging from the inner lower tube 180 must first be engaged. (o ') in the quarter-circular space (n) (n (bis)), while pivoting around the lugs (z) (z (bis)). The outer upper tube (p) will then position itself naturally in the horizontal subspace (m ") (m" (bis)), provided for this purpose, and be blocked simultaneously by the outgrowth (n ') (n '(bis)) inserted in the outer upper tube and by the surfaces (y') and its symmetrical (y '(bis) intended to support the weight of the upper tubes.

Then and finally, the pivot system of the upper tubes (6) (6 (bis)) integrated together with the tube storage system (5) (5 (bis)), on the lower end of the upper bent connection ( 3) (3 (bis)). Its circular internal machining must form a perfect cylinder, when the two symmetrical parts of the bent upper link (3) and (3 (bis)) are assembled by means of screws at the specified locations (t) (t ') and their symmetrical (t (bis)) (t '(bis)). The locking in translation is ensured, on one side, by a symmetrical and semicircular projection / over-thickness (u) (u (bis)) intended to accommodate the circular groove (u ') and machined on the upper part of the inner lower tube (o '); and on the other hand, thanks to the rectangular mouth (u "), smaller than the diameter of the cylinder, at the junction between the tube storage system (5) (5 (bis)) and 195 that allowing the pivot (6) (6 (bis)) within the bent upper link (3) (3 (bis)), thus avoiding upward slipping, it is this circular protrusion / groove system (u) (u ') integrated in the pivot connection which will allow the outer upper tube (and its inner upper tube if applicable) to rotate from 0 ° to 180 °, from inside the bed to the outside of the bed, and vice versa.

This invention is susceptible of industrial application because it allows in a bed to carry 200 all media or multimedia and / or computer technologies not exceeding the maximum size of a 17-inch notebook included and the maximum weight of 5KG included. Thus, it raises the ventilation system (s) of all types of media or multimedia and / or computer technologies relative to the mattress and its user, respectively protecting and improving the health and comfort of the user. and optimally sustaining the life expectancy of this kind of technological support when used in this kind of setting.

In order to complete and improve the understanding of our invention, we have attached a series of sketches: 370 3D sketch: - sketch 1 - example 3D assembly with lower link 2 (ter) and outer upper tube without inner tube - sketch 2 375 ° example 3D view upper link bent (3) - sketch 3 - example 3D cutaway view upper link bent (3) sketch 4 - example 3D cutaway view symmetrical top link bent (3) bis 380 - sketch 5 - example 3D view lower link (2) with drilling - sketch 6 example 3D view lower link (2) without drilling - sketch 7 385 0 example 3D view lower link (2 (bis)) with drilling - sketch 8 - example 3D view lower link (2 (bis)) without drilling - sketch 9 - example 3D view lower link (2 (ter)) with drilling 390 - sketch 10 - example 3D view lower link (2 (ter)) without drilling - sketch 11 - example 3D view clamping device of bed frame (1 ) with drilling - sketch 12 395 0 ex emple 3D view device clamping bed frame (1) without drilling

Claims (10)

REVENDICATIONS1. Lectern characterized in that it comprises a CLAIMS1. Bedrest characterized in that it comprises a device for clamping the inverted "U" shaped bed frame (1), consisting of a flat surface on its top (a) for welding or screwing the lower link the bracket (4), a short side (b) that can be inserted between the mattress and the side beam of a bed and a long side opposite (c), the latter jointly integrating two welded nuts for accommodate two joined greenhouses (d) (of), which consist of 235 individually, a "vise screw" (e) (e ') and a "vise support" (f) (f'). This clamping device, which can be of various sizes, allows not only to be fixed on the frame / side beam of any bedding, but is also intended to accommodate and support on its top a bracket (4) "articulated Which not only allows you to carry all types of media or multimedia and / or computer technologies that do not exceed the size of a 240-17 inch laptop included and the maximum weight of 5Kg included, but also and above all to allow you to elevate the ventilation system (s) from the mattress and its user; protecting and improving respectively the health and the comfort of the user, and optimally perpetuating the life expectancy of this kind of technological support during their use in this kind of frame. 245 2) A bed sheet according to claim 1) characterized in that it comprises a lower connecting device (2) screwed or welded to the flat surface (a) of the clamping device of the frame of the bed (1), which has in within it a system of "guide grooves" or "grooves" machined symmetrically on both sides of the lower link, namely semi-circular grooves ranging from 0 ° to 180 °, composed of 250 of left furrows (h) (h ') and straight grooves (i) (i') and vertical grooves (j) (j ') being respectively the perpendicular axes of symmetry of the semicircular grooves (h + i) (h '+ i') (left and right); 3) Lectern according to claim 2) characterized in that the grooves (h) (h ') (i) (i') (j) (j ') are 255 intended to accommodate the nipples of the rods of force being at the base and passing right through the outer lower tube (o) of the bracket (4), namely two opposite upper studs (k) (k) and two opposite lower studs also (1) (1 '), which fit and slide within the grooves of the lower link (2); so that when the outer lower tube (o) is in a vertical position, the upper (k) (k ') and lower (1) (l') pads thereof are aligned and fully engaged up to 260 the base (x) the lower link (2) in the vertical grooves (j) (j), which also includes an opening (y ") on the top to facilitate machining, whereas when it is desired to put the outer lower tube (o) in one of the two elongate positions, it suffices to pull said tube upwards along the vertical grooves (j) (j '), in order to disengage it from the base (x) of the lower link, then engage only the "upper studs" either towards the left furrows (h) (h ') or on the right 265 (i) (i'), in order to obtain the elongate position, on the desired side. lower allows the final, not only to fix, support, direct and deploy the lower outer tube of the articulated stem, along a horizontal axis, on three positio ns major: two elongated positions "natural" left and right of the clamping device, and parallel to the beam of the bed, and a vertical position, perpendicular and blocked; but also unavoidably reduce, 270 coupled with an interlocking system (3 or 4 tubes in 1 only) offered by the upper link bent (3) 3 (bis)), space congestion optimally. 4) A bedrest according to claim 1) characterized in that it comprises a lower connecting device (2) (bis) screwed or welded to the flat surface (a) of the clamping device of the frame of the bed (1), 275 which provides within it, a system of nut and screw passing through both and from the lower link (2) and the lower outer tube of the bracket (4) in (v) and (v ') ; allowing then a rotation along a horizontal axis with three major positions: two elongated positions to the left and right of the vice, and parallel to the beam of the bed, but also a vertical position and perpendicular to the beam of the bed. In each of the three positions, the outer lower tube (o) is blocked manually by means of an additional pin passing through both (v ") and (v" (bis)). 5) A bedrest according to claim 1) characterized in that it comprises a lower connecting device (2) (ter) screwed or welded to the flat surface (a) of the clamping device of the frame of the bed (1), which has within it a combined system: on the one hand a system of nut and through screw 285 at a time and right through the lower link (2) and the outer lower tube (o) of the bracket (4) in (w) and (w '); thus allowing the latter to rotate along a horizontal axis with three major positions: two "natural" elongated positions on the left and right side of the clamping system of the bed frame, and this parallel to the beam of the bed, but also a vertical position , natural and perpendicular to the bed beam; And secondly, a symmetrically machined "guide groove" system 290 on both sides of the lower link, namely semicircular grooves ranging from 0 ° to 180 °, composed of left grooves (H) ( H ') and straight grooves (I) (I'), and reduced vertical grooves (J) (J ') including an opening (y "(bis)) on the top to facilitate machining, combined with the system screw / nut passing through (w) (w ') The alignment of the reduced vertical grooves and the screw / nut system of (w) (w') represent the perpendicular axis of symmetry of the semi-circular grooves 295 (H) + I) (H '+ J') (left and right). 6) A bedrest according to claim 5) characterized in that the grooves (H) (H ') (I) (I') (J) (J ') are intended to accommodate the nipples located above the system d nut / screw of (w) (w ') and at the bottom of the outer lower tube (o) of the bracket (4), namely two opposite nipples (K) (K'), which fit and slide at within the grooves of the lower link (2); so that when the outer lower tube 300 (o) is in a vertical position, the upper nipples (k) (k ') thereof are aligned and fully engaged in the reduced vertical grooves (J) (J'), until at the base (x ') of the lower link (2). This commitment absolutely and simultaneously requires that the nut / screw system is positioned within the longer perforations of the outer lower tube (o) intended to receive said system in the highest position; whereas when it is desired to put the outer lower tube 305 (o) in one of the two elongated positions, it suffices to pull said tube upwards from its base (x ') according to the reduced vertical grooves (J) (J '), then simultaneously disengage the nut / screw system from its highest configuration for the lowest preferred; then to engage only the upper nipples (k) (k ') or towards the left (H) (H') or right (I) (I ') furrows, in order to obtain the extended position, on the wish. This lower link allows the final 310 not only to fix, support, direct and deploy the outer lower tube of the hinged arm, along a horizontal axis, three major positions: two elongated positions "natural" left and to right of the clamping device, and parallel to the beam of the bed, and a vertical position, natural and perpendicular; but also inevitably reduce, coupled with an interlocking system (3 or 4 tubes in 1 only) offered by the upper link 315 bent (3) (3 (bis)), space congestion optimally . 7) A bedrest according to one of the preceding claims characterized in that it comprises a bent upper connecting device (3) and symmetrical (3 (bis) which incorporates within it a joint system and combined: Of a a tube storage system (5) and its symmetrical 320 (5 (bis)), on the other hand, a pivot system of the upper tubes (6) and its symmetrical (6 (bis)). 8) Lectern according to claim 7) characterized in that it comprises a tube storage system (5) (5 (bis)) which has within it a guide space of the tubes machined in the form of square (m) (m (bis)), containing a symmetrical lug / protrusion (z) (z (bis)) - consisting of a sub-vertical space (m ') (m' (bis)) perpendicular to the sub -space horizontal (m ") (m" (bis)) - as well as another complementary guiding space and machined quarter-circular (n) (n (bis)) separated from (m) (m (bis) )) by an outgrowth (n ') (n' (bis)). It is the combination of these two forms of symmetrical space (m) (m (bis)) (n) (n (bis)) and their respective excrescences which make it possible to receive, deploy and / or store ( s) upper tube (s) (p) (p ') or only (p) .0 9) A lectern according to claim 8) characterized in that the lugs (z) (z (bis)) and (n ') (n' (bis)), of the tube storage system (5) (5 ( bis)) forming an integral part of the upper bent connection (3) (3 (bis)) are intended to engage and slide within the grooves (z ') (z' (bis)) of the tube (p). This system of lugs / grooves is necessary and complementary to the spaces (m) (m (bis) and (n) (n (bis) 335 both for directing the outer upper tube through the spaces (m) (m ( bis)) / (n) (n (bis)) and prevent it from falling out of the bent upper link (3) (3 (bis)) when it is stored or deployed, since the horizontal subspace (m ") (m" (bis)) of the space (m) has not only an opening (y) in its upper part, offering the possibility of lifting, vertically and rotating around the lugs (z) (z ( bis)) engaged in the grooves (z ') (z "), the outer upper tube 340 (p) and its inner tube (p') both uniformly circular, but also a laying zone (y ') (y') (bis)) for supporting the weight of the outer upper tube (p) in the horizontal extended position The vertical subspace (m ') (m' (bis)) makes it possible to slide the fixed lugs (z) (z (bis) )) within the grooves (z ') (z ") of the outer upper tube (p) within the t lower internal ube (o '). The quarter-circular space (n) (n (bis)) is separated from the space (m) (m (bis)) by the protrusion (n ') 345 (n' (bis)), and allows the passing the upper tubes (p) (p ') from the horizontal position to the vertical position, and vice versa. When it is desired to arrange by fitting the tubes (p) (p ') or only (p), if (p') is non-existent, within (o ') (o), it is necessary to lift ( s) top tube (s) (p) (p ') or only (p) at 90 ° through open space (y). This movement is possible 350 also thanks to the lug (z) (z (bis)) located in the surface (m ') (m' (bis)) of the tube storage system (5) (5 (bis) ). Indeed, the grooves (z ') (z ") are naturally rotated around the lugs (z) (z (bis)) .Therefore, this makes it possible to disengage the outgrowth (n') (n '(bis) ) from the lower end of the upper tube (p), and out of the quarter-circular space (n) (n (bis)) until it reaches the maximum vertical position. vertically direct the 355 tubes (p) (p ') or only (p) to the lower link (2), (2 (bis)) or (2 (ter)) by sliding the lugs (z) (z (bis) )) within their grooves (z ') (z "), until reaching the desired nesting level. The lugs (z) (z (bis)) or the horizontal clamp (p "), depending on the assembly chosen, can then act individually as a stop, depending on the level of interlocking chosen. it is desired to deploy the bracket (4), in order to switch to a horizontal position, it is sufficient either to block together the upper inner tube (p ') and the upper outer tube and circular (p), thanks to the horizontal clamping collar (p "), or only (p") on (p) if (p ') is non-existent, then pull the upper tubes (p) (p') or only (p) upwards, in the direction of the bent upper link (3) (3 (bis)), through the end of the opening (y), following the vertical guide gap (m ') (m' (bis)) up to the symmetrical and opposite grooves (z ') (z ") of the tube (p) are locked by the lugs (z) (z (bis)) serving as a stop therefor. Then, before reaching the horizontal position offered by the horizontal guiding subspace (m ") (m" (bis)), it is necessary first to engage the last end of the outer upper tube (p) coming out of the inner lower tube ( o ') in the quarter-circular space (n) (n (bis)), while pivoting around the lugs (z) 370 (z (bis)). The outer upper tube (p) will then position itself naturally in the horizontal subspace (m ") (m" (bis)), provided for this purpose, and be blocked simultaneously by the outgrowth (n ') (n '(bis)) inserted in the outer upper tube and by the surfaces (y') and its symmetrical (y '(bis) to support the weight of the upper tubes. 10) A bedrest according to claim 7) characterized in that it comprises a pivot connection (6) (6 (bis)) integrated together with the tube storage system (5) (5 (bis)), on the lower end of the bent upper link (3) (3 (bis)). Its circular internal machining must form a perfect cylinder, when the two symmetrical parts of the upper bent connection (3) and (3 (bis)) are assembled with screws at the specified locations (t) (t ') and their symmetric (t (bis)) (t '(bis)). 380 Locking in translation is ensured, on one side, by a symmetrical and semi-circular protrusion / over-thickness (u) (u (bis)) intended to accommodate the circular groove (u ') and machined on the upper part inner lower tube (o '); and on the other, thanks to the rectangular mouth (u "), smaller than the diameter of the cylinder, at the junction between the tube storage system (5) (5 (bis)) and that allowing the pivot (6) (6 (bis)) within the bent upper link (3) (3 (bis)), 385 thus avoiding upward slipping, it is this circular protrusion / furrow system (u) (u ') integrated in the pivot connection which will allow the outer upper tube (and its inner upper tube if applicable) to rotate from 0 ° to 180 °, from inside the bed to the outside of the bed, and vice versa.