Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
  • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
  • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
  • A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
  • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
  • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

• the present invention relates to bedding consisting of a mattress and a box spring comprising one or more liftable parts and in particular a liftable backrest; it also concerns the adapted mattress
• the mattress also moves on the box spring.
• the purpose of the structure of the mattress with a liftable backrest described in the document CH-A-482 426 is to adapt the movement of the liftable backrest to eliminate the relative movement 0 of the mattress with respect to the backrest during pivoting.
• the movement and the components are not adapted to avoid the movement of the user on the mattress and this affects comfort when raising or lowering the backrest.
• the horizontal portion and the backrest are provided with independent cushions, the juxtaposition of which forms a mattress. 0 Simultaneously with the lifting movement, these devices provide for an upward movement of the pivot axis. However, this movement is simply adapted to avoid crushing the cushions against each other 5 when the backrest is raised; it only serves to compensate for the lowering of the back cushion, inherent in the pivoting of the latter upwards and it in no way responds to a concern for comfort for a user wishing to change position. In fact, during movement, the contacts between the user's back and the back cushion move from the lying position to the sitting position and vice versa.
• the present invention proposes to remedy these drawbacks by means of a suitable mattress and an original movement of the backrest which clearly improve comfort.
• the bedding according to the invention comprises an extensible mattress and a box spring provided with means which, simultaneously with the pivoting of the backrest, move its pivot axis adapted to match the movement of said backrest with that of the back of the user lying on the mattress, during its change of position.
• This bed base has a fixed part which adjoins the liftable backrest and which is arranged at the level of the user's lumbar region. In addition, it comprises, between the axis of articulation of the backrest and the frame of the bed base, a movable connection by rods, which extends under said backrest and it comprises means for operating said rods to move said axis of articulation. from the back up, as it is pivoted.
• the bedding comprises a box spring whose backrest lifting device consists of a compass comprising at least one motorized arm, articulated on the chassis, and a branch connecting the end of said arm to the backrest, in the central part of the latter.
• the means for operating the link rods in the backrest consist of an elbow lever interposed between the motorized arm and the corresponding link rod; the articulation of the lever on the arm is located opposite that of the branch, with respect to the axis of articulation of said arm on the chassis.
• the links, arms and branches have very precise lengths and positions relative to the backrest and the frame of the bed base to achieve the desired movement.
• the backrest also includes an articulated headrest which pivots at as the file is raised, by means of a finger operated by a connecting rod connected to the lifting branch of said file.
• the invention also relates to the mattress suitable for this type of box spring, and in particular a mattress consisting of a block of polyether foam comprising, in the articulation zones, V-shaped grooves, transverse.
• This mattress also has channels that extend transversely in the block at the shoulder area to provide better comfort.
• the coverings of the foam block as well as the nozzles allow the movement of the bed base to be monitored without hindrance.
• FIG. 1 illustrates, seen from the side, schematically, a bed base according to the invention proposing different positions of use
• FIG. 2 is a perspective view of the back of the box spring and in particular of its mechanism according to the invention
• FIG. 3 is a side view of the backrest lifting mechanism
• FIG. 4 illustrates different stages of raising the backrest and the headrest, showing the movements of the mechanism
• FIG. 5 shows, partially, the mattress suitable for the bed base according to the invention
• FIG. 6_a to 6_c show, schematically, three possible positions of a user on the bedding and the absence of relative movement between the bed base, the mattress and the user, regardless of the position taken.
• Figure 1 shows a box spring made up of several articulated parts, on which rests a mattress shown in thin dashed lines.
• This box spring is disposed on a frame 1. It comprises a fixed part 2 disposed at the level of the lumbar region of the user. Departure and on the other side of this fixed area, there is the backrest 3 on which the user's back and head rest and, opposite this backrest, two parts 4 and 5 which correspond to the legs of the user. Note that the backrest 3 also includes a headrest 6 which allows the user's head to be properly supported and positioned.
• the bed base may include flexible slats mounted on suitable ball joints, not shown.
• the movement of the moving parts 3, 4, 5 and 6 is obtained manually or automatically thanks to an appropriate motorization.
• the record is obtained manually or automatically thanks to an appropriate motorization.
• This motorization can be remotely controlled by the user by means of an appropriate housing.
• FIG. 2 shows the mechanism for operating the backrest 3 and the headrest 6.
• the backrest 3 consists of a rigid frame comprising longitudinal members 31 and crosspieces 32. This backrest 3 pivots about a transverse axis 7 located at the lower part of the backrest, that is to say in the lumbar region. This articulation axis 7 is movable relative to the frame 1 of the bed base.
• the backrest 3 is in fact connected to the chassis 1 by means of a movable link consisting of two links 8 arranged on each side of the backrest and interposed between the lumbar articulation axis 7 and an axis 9 located on the chassis 1, under the folder. Note, Figure 2, that the two side links 8 are interconnected by a stiffening crossbar 10 and that they are slightly inclined relative to the horizontal.
• the backrest lifting movement 3 is obtained by means of a system of the compass type 11 disposed laterally; each compass 11 comprises a motorized arm 12 and a branch 13 interposed between this arm and an axis hinge 14 arranged on the side members of said backrest.
• the arms 12 are integral with a shaft 15 articulated around an axis 16 on the chassis 1.
• This shaft 15 comprises a yoke 17 which receives the end of the rod 18 of a jack
• This cylinder can be of the electric cylinder type. It performs the operation of the arms 12 and in particular their pivoting about the axis 16.
• the jack
• transverse rod 0 serving to reinforce and maintain the spacing between the arms 12.
• the headrest 6 forming 5 a frame articulated around an axis 22 on the backrest 3.
• the movement of this headrest is obtained by means of levers 23 bent and articulated around an axis 24 on a plate 25 reported under the backrest 3.
• These levers 23 are movable under the effect of connecting rods 26 connected to each branch 0, near their axis of articulation 14.
• FIG. 3 the entire mechanism ensuring the movement of the backrest 3 and the headrest 6.
• the backrest 3 pivots around this axis 7 by means of the compass 11 consisting of the driving arm 12 and of the branch 13.
• the driving arm 12 is articulated around the axis 16 which is fixed relative to the chassis 1.
• the arm 12 is driven by means of the yoke 17 which receives the end of the rod 18 of the jack 19.
• the branch 13 interposed between the axis 27 located at the end of the arm 12 and the axis 14 of the backrest 3 has a length substantially equal to that of the arm 12. It is noted that the axis 16 is positioned at about 1/3 of the length of the backrest 3 with respect to the articulation axis 7 of this backrest 3.
• the arm 12 and the branch 13 have a length which corresponds substantially to half the length of the backrest 3.
• the file 3 is connected to the chassis 1 by means of the link 8 interposed between the articulation axis 7 and an axis 9 secured to the chassis 1, located under said file 3.
• This link 8 has a length which corresponds substantially to 2 / 3 of the length of the backrest 3. It is noted that the axis 14 of the branch 13, disposed on the backrest 3, is situated slightly above the level of the hinge pin 7 of said backrest 3.
• the movement of the arm 12 causes movement of the link 8 thanks to a bent lever 21 interposed between the two.
• This lever is bent to pass under the shaft 15 centered on the axis 16.
• This lever is articulated on the extension 12 ′ of the arm 12, around an axis of articulation 28 and around an axis of articulation 29 located on the link 8 near its fixed axis 9.
• the link 8 pivots about the axis 9, pushed by the lever 21 and thus raises the articulation axis 7 of the backrest 3.
• the headrest 6 is articulated around an axis 22 on the backrest 3.
• This headrest is movable under the effect of a bent lever 23 which has a finger 30 at its end, under said headrest 6, to pivot this last around its articulation axis 22.
• the bent lever 23 is articulated around an axis 24 located under the backrest 3, at the end of a plate 25 secured to said backrest.
• a connecting rod 26 is interposed between the bent lever 23 and the branch 13 for maneuvering the backrest, articulated around an axis 33 arranged near the axis
• the connecting rod 26 is articulated about an axis 34 located in the bend of the lever 23.
• the connecting rod 26 exerts traction on the bent lever 23 and, by its finger 30, the latter pivots the headrest 6 around its axis 22.
• FIG. 4 shows a series of positions taken by the backrest and the headrest as the arm 12 pivots about its hinge pin 16 located on the chassis 1. This illustration is essentially theoretical. In reality, we note that the hinge axis 7 of the backrest 3 remains fixed at the start of the pivoting movement.
• the headrest 6 has a movement which is only noticeable from the position at around 45 ° to the backrest 3. It can be seen in this FIG. 4 that the compass 11 develops around 90 °; in its starting position, the angle a ⁇ formed by the arm 12 and the branch 13 is of the order of 30 °; in the maximum position of the backrest 3, this angle _a is of the order of 120 °.
• This mattress mainly consists of a block of foam 40.
• This block of foam comprises, on each face, so as to be reversible, transverse grooves 41 with V-shaped cross section and the depth of which corresponds substantially to a quarter of the thickness of the block 40.
• These transverse grooves 41 are arranged in groups of two, for example at the level of the folding zones of the mattress, that is to say at the level of the articulation zones of the bed base. Both sides of block 40 have a coating
• the coating used on the surface is for example a stretch, that is to say a fabric or knitted fabric which allows a certain extension. Seams and stitching
• orifices 44 which provide better comfort for the user. These cutouts have a section whose dimension corresponds substantially to one third of the thickness of the block and they are spaced by a distance which corresponds substantially to half the thickness of the block. Three orifices 44 have been shown which extend transversely and which are arranged substantially in the center of the area of the mattress which is placed on the backrest 3.
• This mattress is particularly suitable for use in combination with all types of articulated bed base and in particular with the bed base described above, but it is obvious that its applications are not limited to this type of bed base.
• this new bedding practically avoids the relative movements of the mattress on the box spring.
• the backrest-mattress assembly is adapted to faithfully reproduce the movement of the user's torso, thus maintaining permanent contacts from the lying position to the position seated and vice versa. It is indeed noted that the points A, B and C of contact between the user and the back part of the mattress do not change, whatever the position of the bedding.

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• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Nursing (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)
• Invalid Beds And Related Equipment (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9408688

Family Applications (1)

Country Status (2)

Cited By (3)

Families Citing this family (4)

Citations (6)

Family Cites Families (3)

• 1991
  • 1991-01-11 FR FR9100389A patent/FR2671468A1/fr active Granted
• 1992
  • 1992-07-09 WO PCT/FR1992/000662 patent/WO1994001022A1/fr active Application Filing

Patent Citations (6)

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