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
  • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
  • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
• • 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
  • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
  • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
  • A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair
  • A61G5/0825—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding

Definitions

• Collapsible wheelchairs are known, which are constructed sub ⁇ stantially as illustrated in the U.S. Patent Specification 2 401 085, and namely include two side portions and crossed struts articulately connecting them, the struts extending from the lower edge of each side portion and towards the upper edge of the opposing side portion.
• the upper end of said support strut is united with the upper edge of the respective side portion by a link connection.
• this link joint consists in that the seat is hinged at the middle, and when the wheelchair is collapsed the seat folds upwards.
• the disadvant ⁇ age with such wheelchairs is that they are extended in height when they are collapsed, which results in that the collapsed frame becomes clumsy and voluminous, thus making it difficult to put into such as the back seat or boot of a car.
• the object of the present invention is to achieve a collapsible frame, preferably for wheelchairs, in which extension or collapse takes place in a single operation, the side portions, respectively, moving away or towards from each other and where the parts included in the frame are situated substantially within the periphery of the side portions the whole time.
• the frame including a locking rod which is articulately attached to a first support means and glidably, united with a second support means, the rod being adapted to lock them in a predetermined relation to each other in the position of use.
• Fig. 1 is a perspective view of an inventive frame, particularly for a wheelchair.
• Fig. 2 is a view from above of a collapsed frame.
• Fig. 3 is a side view of the collapsed frame.
• a collapsible frame particularly for wheelchairs. It includes two vertical side portions 1 and 2 which are parallel and mutually spaced in a position of use, these portions preferably comprising tube structures, with each portion forming a rigid lattice.
• the frame further includes two U-shaped tubular members 3 and 4, the free ends of which are articulately connected to the side portions 1 and 2 by pivot joints 5, 6 and 7, 8, the members also are mutually connected with the aid of a hinged joint 9.
• the frame further has two struts 10 and 11.
• One end of the strut 10 is articulately connected to the side portion 1 with the aid of a pivot joint 12 and its other end is articulately connected by a pivot joint 13 to the U-shaped member 4, which is articulately connected to the opposing side portion 2.
• the second strut 11 is at one end connected by a pivot joint 14 to the other side portion 2, and at its other end is pivotably connected to the opposing U-shaped member 3, which as mentioned is pivotably connected to the side portion 1.
• a locking head 16 is rotatably united with the first strut 10 at a predetermined place along its length.
• a locking rod 17 which is adapted glidable in a hole in the locking head 16 is rotatably and articulately united to the hinged joint 9 between the U-shaped member 3 and 4 at one end, and at its other end it is provided with a handle 18 for opening out and collapsing the frame.
• the locking rod 17 may be rotatably and articulately united with one of the U-shaped members 3 and 4.
• the locking rod 17 is locked to the locking head 16 in a predetermined position, which concurs with the opened-out or usable state of the wheelchair.
• This locking means comprising the locking head 16 and recess 21 on the locking rod 17, may of course be replaced by some other known locking device. It is however important that the locking means meets the purpose of locking the U-shaped members 3 and 4 and the struts 10 and 11 in a predetermined position in relation to each other in the position of use, so that a stiff frame is formed, comprising two parallel, mutually spaced side portions, which are so stable that they can carry, inter alia, rear wheels 22, 23, front wheels 24, 25 and footrests, illustrated in Fig. 1 by chain-dotted lines, as well as an unillustrated seat carried between the upper longitudinal tube portions of the side portions, and furthermore also support an unillustrated back support between the rods 19 and 20.

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)
• Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
• Special Chairs (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20353183

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (4)

• 1983
  • 1983-11-04 SE SE8306068A patent/SE446502B/sv not_active IP Right Cessation
• 1984
  • 1984-10-31 WO PCT/SE1984/000369 patent/WO1985001873A1/en unknown
  • 1984-10-31 EP EP84904201A patent/EP0162885A1/en not_active Withdrawn

Patent Citations (4)

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