Classifications

• • 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 a device for automatically raising and lowering the mobile elements - bust and leg rests - of an armchair or a bed and, in the case of an armchair and bed for the sick, intended to allow the actuation by them of these adjustable elements without requiring any particular effort on their part.
• the present invention improves a device, described in French Patent No. 8812011, comprising a self-locking gas spring associated with each movable element, forming a headrest and footrest for the seat and the bed and arranged so to allow by its elongation the lifting of this movable element, each gas spring being associated with a mass acting in antagonism thereof and able to be moved so as to compensate at rest the force of the gas spring relative to the weight of the person, resting on this mobile element.
• each movable element on one side of each movable element is also arranged a bar extending in parallel, on which a mass is sliding and can be locked at a determined location by means of a screw, and allows '' calibrate the headrest or footrest lifting device, based on the weight of the person lying on the bed.
• the mass system acting in opposition to the self-locking cylinder although functioning satisfactorily, can be improved. Indeed, the mass adding to the weight of the patient weighs down the bed In addition, the adjustment of the mass at the end of the movable element and in the raised position as much as possible can cause a shock by its sudden descent by unlocking the mass.
• the present invention aims to counter these drawbacks.
• the device for lifting and lowering the movable elements, relative to a fixed frame (frame), of a chair or bed which comprises a gas spring associated with each movable element, namely, a backrest and a leg rest, and arranged so as to allow, by its elongation, the lifting of this movable element.
• the backrest or leg rest includes a point for anchoring the thrust of the jack, aiming to vary (decrease or increase the distance from the axis of rotation of the backrest) the force exerted on the movable element.
• the cylinder will be located close to the axis of rotation of the backrest or leg rest and for high weights it will be further away. This adjustment corrects the effort that the cylinder must provide according to the weight of different people and this system is suitable for all types of mattresses. In addition, it increases the operating life of the gas cylinders by varying the distance of the thrust from the cylinder.
• FIG. 1 is a side view of the bed frame equipped with a first embodiment of the device.
• FIG. 2 is a top view of the bed frame equipped with the device in its second embodiment according to the invention.
• FIG. 3 is a side view of the bed frame in its second embodiment according to the invention.
• FIG. 4 is a detail view in longitudinal section of the frame of Figure 3.
• FIG. 5 is a detail view in longitudinal section of the frame of the bed of Figure 1.
• Figures 1 to 5 show the application of the device according to the invention for a patient bed or for domestic use.
• This bed is made up of a frame made up of a rectangular frame (2) and feet (3).
• On the frame (2) are articulated two movable elements (4 and 5) intended to serve respectively as backrest and leg rest.
• Each of these elements (4 and 5) is articulated at the central part of the bed, shown without mattress in order to facilitate understanding, along axes of articulation (6 and 7).
• Gas springs (8) are each articulated between the frame (2) of the bed and the backrest (4) or legrest (5) element by rotation about its axis (6 and 7). The joints of these gas springs (8) are carried out in a manner known per se by means of yokes 10.
• Figure 1 shows one. first form of the device according to the invention.
• the gas spring (8) associated with the backrest (4) is of the self-locking type, it is articulated between a fixing lug 10 ', belonging to the fixed frame, and one belonging to the backrest (4), namely 10 ".
• An adjustment means is arranged to cause the gas cylinder thrust axis to go up or down, making it possible to reduce or increase the force exerted for the movement of the backrest.
• the adjustment will be made by guiding in a U and a notched light to position the actuator in thrust.
• the operation of the lifting device for the backrest is as follows: once the person is in place on the bed. the backrest is slightly raised by placing the adjustment pin in a notch (12), close to the articulation (6) of the backrest for people of small stature. For a taller person, the distance between the cylinder axis and the rotation axis is greater. It is a taring without weight. It is therefore sufficient for the person to pull the lever (1 1 or 1 l), to straighten his head slightly which causes a break in balance: the backrest goes up. To go back down, you just have to pull the lever, put your head down and the backrest goes down. It should be added that the same manipulation is done with the leg lifter (5), comprising a self-locking cylinder (8) not shown in the drawing.
• the handle (14) allowing the height adjustment of the jack via an adjustment pin
• a jumper (16) taken on this same axis comprising a spring (15), and a lever (17) - able to extend the spring according to the size of the notch desired - simply relieves the relief -bust and leg rest; the jack (8) will automatically position itself in the desired notch (12).
• a jumper (16) taken on this same axis comprising a spring (15), and a lever (17) - able to extend the spring according to the size of the notch desired - simply relieves the relief -bust and leg rest; the jack (8) will automatically position itself in the desired notch (12).
• REPLACEMENT SHEET (RULE 26) The positioning of the notch will be symbolized by a pictogram: small figurine for people of small size and larger figurine for people of larger size.
• a system lock makes it possible to prohibit the operation of the controllers if the patient's condition requires it. It consists of an axis (54) comprising a U (53) which, by tilting, immobilizes the triggering plate (52) of the yoke 10. The axis (54) is immobilized in translation, so that that the U (53) is always in front of the dish (52).
• Figures 2 to 5 show the second embodiment of the device according to the invention, in its application to a patient bed. In these figures, the same elements will be designated by the same references as above.
• the handle can be telescopic (11) and foldable (11 ').
• FIG. 4 shows the foldable lever (11 ′) which comprises a cylinder with a notch (55) firstly, allowing the lever to pivot in rotation without causing the movement of the triggering of the gas spring and secondly, allowing the movement of the articulation (49) and (51) and the triggering of the gas spring (8).

Landscapes

• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Nursing (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)
• Invalid Beds And Related Equipment (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9453506

Family Applications (1)

Country Status (3)

Families Citing this family (2)

Family Cites Families (1)

• 1993
  • 1993-11-29 FR FR9314484A patent/FR2713065B1/fr not_active Expired - Fee Related
• 1994
  • 1994-11-29 WO PCT/FR1994/001387 patent/WO1995014412A1/fr not_active Application Discontinuation
  • 1994-11-29 EP EP95902805A patent/EP0804110A1/de not_active Withdrawn

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events