Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C7/00—Parts, details, or accessories of chairs or stools
  • A47C7/02—Seat parts
  • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C7/00—Parts, details, or accessories of chairs or stools
  • A47C7/02—Seat parts
  • A47C7/024—Seat parts with double seats
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C7/00—Parts, details, or accessories of chairs or stools
  • A47C7/02—Seat parts
  • A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions
• • 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
  • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
  • A61G5/10—Parts, details or accessories
• • 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
  • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
  • A61G5/10—Parts, details or accessories
  • A61G5/1091—Cushions, seats or abduction devices

Definitions

• the present invention relates to an arrangement for a chair, preferably of the type that is both adaptable and versatile, such as to be suitable for a person with a stiff hip, or other disability.
• the chair includes a seat, having two flaps at its front portion, these being angularly adjustable as required, in relation to the general plane of the seat.
• the thumbwheel If the thumbwheel is tightened too heavily, it may be prac ⁇ tically impossible for the disabled person to release it again for adjustment. If the positional fixation of the movable parts should suddenly become loose, or be released by itself, e.g. due to insufficient tightening of a thumb ⁇ wheel, a person, and particularly one newly operated, could be caused injury and pain as a result. It is accordingly very difficult for the disabled person him- or herself, as well as any attendant, to achieve a positive and exact setting of the adjustable parts of the chair seat, as desired by the person in question.
• the object of the present invention is to surmount these drawbacks, and to provide an arrangement for a chair with an adjustable seat of the type mentioned in the introduc ⁇ tion, with which a disabled person may obtain full support from the seat.
• This is achieved by the respective flap being operated by a drive means actuated by an easily accessible control means, such that the flap is automati ⁇ cally, infinitely variably adjustable from/to a bottommost, lowered position, forming a negative angle relative to the general plane of the seat, and to/from an uppermost, raised position, forming a positive angle relative to this plane.
• the in ⁇ ventive arrangement constitutes a safety lock of the mov ⁇ able parts, in that during, as well as after the actual adjustment the parts are automatically locked in precisely that position in which they are in.
• Fig. 1 is a perspective view of a chair including the arrangement in accordance with the invention
• Fig. 2 is a partial view, seen in perspective from below, showing the seat of the chair illustrated in Fig. 1 and
• Fig. 3 is a schematic side view of the chair in Fig. 2, showing the flaps in different positional settings.
• the invention constitutes an arrangement for a chair, which includes a seat 1, having flaps 3, 4 at its front portion 2, where the angles of these flaps can be adjusted as desired, relative to the general plane of the seat 1.
• the respective flap 3 or 4 is operated by a drive means 6 actuated by an easily access ⁇ ible control means 5, such that the flap is automatically, infinitely variably adjustable from a bottommost, lowered postion A, forming a negative angle relative to the plane of the seat 1, and to an uppermost, raised position B, forming a positive angle relative to the plane of the seat 1, and vice versa.
• the seat 1 includes a base plate 7 having two flap elements 9, 10 pivotably mounted on the front edge 8 of the base plate.
• a sitting cushion or pad 26 is mounted on a support member 11 and its support parts 12, 13, the member 11 and parts 12, 13 being in turn respectively mounted on the base plate 7 and elements 9, 10.
• the pad 26 forms an integrated seating member having two flap-like formations 14, 15.
• the drive means 6 comprises a piston 17, reciprocably movable into, and out from a drive cylinder 16. At its free, outer end 18 the piston 17 is pivotably attached to a link 19, the other end of which being pivotably connected to a guide pin 20 fixed to, and projecting downwards from the underside of the respective flap element 9 or 10.
• the reciprocable piston 17 is infinitely variably movable to different, selectable, fixed positions in its direction of movement, via the drive cylinder 16, which is actuated by the control means 5.
• the drive cylinder 16 is provided with an internal thread (not illustrated on the drawing) mating with a complemental thread on the piston 17. Accordingly, when the drive cylinder 16 is turned, the threads coact to cause the piston 17 to move into, or out from the cylinder, while simultaneously affecting the angular attitude of the respective flap 3 or 4 to the seat 1.
• control means 5 comprises a thumbwheel 23, rotatably mounted in a holder 24, and connected to a drive cylinder 16 with the aid of a cable or wire 25, for translating the rotational movement of the thumbwheel 23 to the cylinder 16.
• the latter is rotatably mounted in retaining bearing blocks 21, 22 on the underside of the base plate 7.
• the flap elements 9 and 10 are pivotably mounted on the base plate with the aid of hinges 27 in a suitable way, the seat pad 26 is attached to the support plate 11 and its support parts 12, 13 carrying the formations 14, 15. These support plates 11-13, with the seat pad 26 resting on them, are fastened to the base plate 7 and its flap elements 9 and 10 in a suitable way, e.g. with the use of screws 28.
• the drive means 6 may comprise any suitable form of driving device, e.g. a pneumtic piston or electric motor, for actuating the movement of the link 19 such as to swing the respective flap 3 or 4 with, or without assistance from the reciprocably movable piston 17.
• the control means 5 may comprise, instead of a thumbwheel 23, some form of switch for activation of the drive means 6.
• the control means 5 is placed at each of the rear corner portions of the seat.

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)
• Chair Legs, Seat Parts, And Backrests (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20385525

Family Applications (1)

Country Status (5)

Cited By (13)

Families Citing this family (2)

Citations (3)

• 1992
  • 1992-03-05 SE SE9200680A patent/SE500832C2/sv not_active IP Right Cessation
• 1993
  • 1993-03-04 DE DE69306938T patent/DE69306938T2/de not_active Expired - Lifetime
  • 1993-03-04 EP EP93905735A patent/EP0631481B1/en not_active Expired - Lifetime
  • 1993-03-04 WO PCT/SE1993/000185 patent/WO1993017604A1/en active IP Right Grant
• 1994
  • 1994-08-31 NO NO943224A patent/NO308284B1/no not_active IP Right Cessation

Patent Citations (3)

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