The present invention relates to the field of furniture and more particularly that of lift-up beds.
The patent WO 2013/156141 describes a lift-up bed which comprises a fixed framework which bears a raisable pivoting framework capable of bearing a mattress. This bed comprises a mobile support which is borne in an articulated manner by first arms fixed to the pivoting framework and by second arms articulated on the fixed framework, the first arms inducing the movements of the mobile framework during the pivoting of the pivoting framework.
A lift-up bed structure is proposed which comprises a fixed framework; a pivoting framework capable of supporting bedding, mounted to pivot on a transverse pivoting axis in such a way that the pivoting framework can pivot between a horizontal position stretched out forward and a rear vertical raised position; and a mobile support capable of supporting a seat, movably mounted on the fixed framework in such a way that the mobile support can be displaced between a high advanced position and a low retracted position in which it is lower than in the high advanced position; the mobile support, in advanced position, extending at least partly in front of the pivoting framework, in raised position, and the mobile support, in retracted position, extending at least partly below and at a distance from the pivoting framework, in stretched-out position.
The lift-up bed structure comprises guiding means which determine the travel of the mobile support relative to the fixed framework between its high advanced position and its low retracted position and link means, distinct from the guiding means, linking the pivoting framework and the mobile support and capable of displacing the mobile support from its advanced position to its retracted position when the pivoting framework is pivoted from its raised position to its stretched-out position, and vice versa, along said travel.
The guiding means can comprise guides mounted on the fixed framework and rollers or runners mounted on the mobile support and cooperating with the guides.
The guides can have horizontal front terminal portions.
The link means between the pivoting framework and the mobile support can comprise at least one arm articulated on the one hand on the pivoting framework and on the other hand on the mobile support.
The articulated arm can be linked to the mobile support by a transverse pivot and can have a travel compensation opening in which is engaged a transverse pivot borne by the pivoting framework.
The pivoting framework can be equipped with a cladding facing plate, the mobile support, in retracted position, extending at least partly below and at a distance from this cladding plate of the pivoting framework, in stretched-out position.
The fixed framework can comprise a front cross member forming an abutment for the pivoting framework, in stretched-out position.
The fixed framework can have supports on the floor such that it is self-supporting.
The structure can comprise lateral flanges linked by a reinforcing and anti-torsion cross member situated below and in front of the transverse pivoting axis of the pivoting framework.
The structure can comprise at least one cylinder between the pivoting framework and said reinforcing and anti-torsion cross member.
A lift-up bed structure, with raisable mattress and with retractable seat, will now be described by way of nonlimiting exemplary embodiment, illustrated by the drawing in which:
The lift-up bed structure 1 comprises a fixed framework 2 which comprises two opposite lateral flanges 3 spaced apart transversely, which have horizontal bottom edges 4 intended to rest on the floor.
The lift-up bed structure 1 comprises a pivoting framework 5 which has a part engaged between the lateral flanges 3 and which is mounted to pivot on these lateral flanges 3 on a transverse pivoting axis 6, in such a way that the pivoting framework 5 can pivot between a stretched-out position in which it extends substantially horizontally and a rear raised position in which it is disposed substantially vertically.
According to the present description, the stretched-out position of the pivoting framework 5 is a reference position in which a longitudinal direction between the front and the rear and a transverse direction at right angles to this longitudinal direction are established.
When the pivoting framework 5 switches from its raised position (
The fixed framework 2 comprises a link cross member 7 whose ends are secured to the lateral flanges 3. The link cross member 7 is disposed below and in front of the transverse pivoting axis 6. The link cross member 7 also constitutes a reinforcing and anti-torsion member. For example, the link cross member 7 is formed by a structural bar of square, rectangular, round, T-shaped or similar section, provided at its ends with plates fixed onto the opposing faces of the lateral flanges 3 by screws.
The pivoting framework 5 comprises a substantially rectangular frame 8 which comprises opposing lateral stringers 9 and opposing transverse bars 10 linking the ends of the lateral stringers 9, and intermediate bars 11 and 12, forming a cross and linking the centers of the lateral stringers 9 and of the transverse bars 10.
To ensure that the pivoting framework 5 is mounted so as to pivot on the fixed framework 2, transverse pivots 13 disposed along the transverse pivoting axis 6 are interposed between the lateral stringers 9 and the lateral flanges 3, these transverse pivots 13 being provided at short distances from the rear transverse bar 10 of the frame 8 given the length of the lateral stringers 9.
When the pivoting framework 5 is in stretched-out position (
The pivoting framework 5 is capable of supporting, for example on the top face of the frame 8 and of the crossed bars 11 and 13, a mattress 14 via, for example, a slatted base 15. The mattress 14 and the slatted base 15 can be held by straps (not represented) and by a rear transverse plate 16 of the pivoting frame 5 against which the rear extent of the mattress 14 comes to bear.
The pivoting framework 5 comprises bottom transverse bars 17 whose ends are linked to the stringers 9 and to the intermediate bar 12 by offsetting bars 18.
The pivoting framework 5 is provided with a cladding plate 19 fixed onto the transverse bars 17. The cladding plate 19 extends parallel to and at a distance from the frame 8 and covers the surface of this frame 8.
When the pivoting framework 5 is in stretched-out position (
When the pivoting framework 5 is in raised position (
When the pivoting framework 5 is in stretched-out position (
For example, the cross member 20 can be formed by a vertical plate whose ends are secured to the vertical front edges of the lateral flanges 3, this plate being able to be reinforced by L-shaped folds.
When the pivoting framework 5 is in raised position (
In order to make the pivoting framework 5 pivot relative to the fixed framework 2, also provided are lateral actuation cylinders 22, for example electrical, gas or spring cylinders 19, which are mounted between the link cross member 7 and the stringers 9 of the pivoting framework 5, on which they are transversely articulated.
The lift-up bed 1 further comprises a mobile support 23 disposed at least partly in the free space 21 and movably mounted on the fixed framework 2 in such a way that the mobile support 23 can be displaced between a high advanced position, corresponding to a position of use, and a low retracted position (
Over at least a part of its travel from its high advanced position to its low retracted position, the mobile support 23 retracts backward while lowering. Conversely, over at least a part of its travel from its low retracted position to its high advanced position, the mobile support 23 advances forward while rising.
The mobile support 23, in advanced position, extends at least partly in front of the pivoting framework 5, in raised position, and the mobile support 22, in retracted position, extends at least partly below and at a distance from the pivoting framework 5, in stretched-out position.
The mobile support 23 comprises a rectangular frame 24 which comprises lateral stringers 25 and transverse bars 26 linking the ends of the stringers 25.
The flanges 3 are provided, on their opposing faces, with two pairs of opposing guides 27 and 28, offset longitudinally, forming opposing pairs of guiding grooves 29 and 30.
The lateral stringers 25 are provided laterally with opposing rollers 31 and 32 engaged in the guiding grooves 29 and 30. These rollers could be replaced by runners mounted on the stringers and possibly articulated on these stringers 25 on transverse axes.
The guiding grooves 29 and 30 are arranged as follows.
With the pivoting framework 5 in raised position (
The frame 24 is dimensioned in such a way that the stringers 25 are at a short distance from the opposing guides 27 and 28 and the transverse bars 26 are at a short distance from the cladding plate 19 and from the front cross member 20.
With the pivoting framework 5 in stretched-out position (
The guiding grooves 29 and 30 and the rollers 31 and 32 constitute sliding guiding means. The guiding grooves 29 and 30 determine the sliding travels of the rollers 31 and 32 and have short, horizontal front terminal portions 29a and 30a followed by portions 29b and 30b that are inclined backward and downward.
In the high advanced position of the rectangular frame 24 of the mobile support 23 (
From its high advanced position (
The lift-up bed 1 further comprises link means 34, distinct from said guiding means, which link the pivoting framework 5 and the mobile support 23. These means 34 are capable of displacing the mobile support 23 from its high advanced position (
The link means 34 comprise opposing lateral arms 35 which are articulated on the one hand on the mobile support 23 and on the other hand on the pivoting framework 5.
The articulated lateral arms 35 are mounted to rotate on short backward extensions of the stringers 25 of the mobile support 23 via transverse pivots 36 and have, in their lengthwise direction, travel compensation openings 37 in which are engaged transverse pivots 38 borne by backward extensions of the stringers 9 of the pivoting framework 5.
The articulated lateral arms 35 are arched, their concave form being on the side of the rear part of the pivoting framework 5.
When the pivoting framework 5 is in its stretched-out position (
When the pivoting framework 5 is in its raised position (
When the pivoting framework 5 is pivoted from its stretched-out position (
The high advanced position of the mobile support 23 can be limited by front lateral abutments 39 of the fixed framework 2 and the low retracted position of the mobile support 23 can be limited by rear lateral abutments 40 of the fixed framework 2 (
The mobile support 23 is capable of supporting a seat 41 via a slatted base 41a, or the like, borne by the frame 24. The seat 41 can be formed by a seating cushion or several transversely adjacent seating cushions, of substantially parallelepipedal forms.
The movements described above of the pivoting framework 5 and of the mobile support 23 are designed for the seat 41 to occupy a position of use in front of the cladding plate 19 when the pivoting framework 5 is in its raised position (
The space between the mobile support 23, in low retracted position, and the cladding plate 19 of the pivoting framework 5, in stretched-out position, is designed to house the seat 41 therein, in stowed-away position, without crushing or possibly slightly crushing the seat 41.
Moreover, the mobile support 23 can be subject to displacement-assisting springs or elastic tensioners 23a (
Advantageously, the fixed framework 2 is self-supporting.
For that, the longitudinal position of the cross member 20 linking the front edges of the lateral flanges 3, on which the pivoting framework 5 bears in stretched-out position, must be in front of a position of equilibrium of the torques resulting from the weights or masses of the bed 1, fully equipped, behind and in front of the cross member 20 and the floor supports of the lateral flanges 3, to prevent any forward tilting. For example, the cross member 20 is situated in front of the center of the length of the pivoting framework 5, while remaining fairly distant from the front of the pivoting framework 5. Also, when the pivoting framework 5, fully equipped, is in raised position, the floor supports of the fixed framework 2, in particular given the longitudinal position of the transverse articulation axis 6, prevent any tilting of the bed, backward in particular.
Thus, the bed 1, fully equipped, can be used without the need to fix the fixed framework 2 to the floor or to an adjacent wall and without the need to equip the pivoting framework 5 with front supporting feet.
Advantageously, the following arrangements can be adopted.
The lateral flanges 3 comprise rear parts 3a and front parts 3a stretched out forward of and lower than the rear parts 3a.
The top edges of the front parts 3b of the lateral flanges 3 are level with the top edge of the front cross member 20 in the form of a plate.
The rear parts 3a of the lateral flanges 3 bear the link cross member 7 and the transverse pivots 13, at levels situated higher than the top edges of the front parts 3b.
The top front vertical edges of the rear parts 3a of the lateral flanges 3 can be in the area of the lateral extents of the cladding plate 19 when the pivoting framework 5 is in its raised position.
The rear vertical edges of the lateral flanges 3 can be linked by a vertical plate 42.
The bottom edges of the lateral flanges 3 can be linked by a horizontal plate 43.
Cladding plates can be provided. In particular, the pivoting framework 5 can be equipped with lateral plates 44 and a front plate 45, having edges linked to the edges of the cladding plate 19 and edges adjacent to the frame 8 and linked thereto.
The lateral flanges 3 can be equipped, externally, with blocks forming arm rests.
When the pivoting framework 5 is in raised position and the seat 41 is in position of use, a removable backrest (not represented) formed by one or more cushions can be placed against the cladding plate 19.
According to a variant embodiment, a backrest can be fixed against the cladding plate 19. Such a backrest could then be brought, in the forward pivoting of the pivoting framework 5, into a position stowed away above the seat 41 in stowed-away position, and vice versa.
Moreover, the bed can be equipped with lateral plates fixed externally against the lateral flanges and with a top linked to the top ends of these lateral plates. These lateral plates can have a reduced width allowing for the existence of clearances on either side of the bed in stretched-out position and for the placement of bedside tables.
Number | Date | Country | Kind |
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1653093 | Apr 2016 | FR | national |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2017/057922 | 4/4/2017 | WO | 00 |