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EP0297831A2 - Rollstuhl - Google Patents

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Publication number
EP0297831A2
EP0297831A2 EP88305871A EP88305871A EP0297831A2 EP 0297831 A2 EP0297831 A2 EP 0297831A2 EP 88305871 A EP88305871 A EP 88305871A EP 88305871 A EP88305871 A EP 88305871A EP 0297831 A2 EP0297831 A2 EP 0297831A2
Authority
EP
European Patent Office
Prior art keywords
seat
chassis
coupling
wheel chair
alignment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88305871A
Other languages
English (en)
French (fr)
Other versions
EP0297831A3 (de
Inventor
John Charles Payne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0297831A2 publication Critical patent/EP0297831A2/de
Publication of EP0297831A3 publication Critical patent/EP0297831A3/de
Withdrawn legal-status Critical Current

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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

Definitions

  • This invention relates to a wheel chair.
  • a known type of wheel chair is made up of a frame mounted on wheels the frame being fitted with flexible seat and back support members to accommodate an occupant.
  • Such chairs are frequently equipped for self propulsion with two relatively large wheels positioned for manipulation by the occupant.
  • the lateral width or some other significant dimension of the chair can be reduced by folding the frame which generally requires that the seat and back support members should be flexible.
  • a wheel chair comprising a wheeled chassis incorporating a seat
  • the seat and the chassis are discrete, self supporting members
  • a demountable coupling is provided linking the seat to the chassis, the coupling being operable between a first position where the coupling secures the seat to the chassis and a second position where the coupling releases the seat from engagement with the chassis
  • a control linkage provides for regulating the operation of the coupling at least from the first to the second position
  • a lifting point is incorporated in the seat structure to enable at least the seat (with or without an occupant) to be lifted alone whether or not coupled to the chassis.
  • a wheel chair is characterised in that the seat and the chassis are provided with complementary alignment structure adapted so that on the juxtaposition of the separated seat portion with the chassis the complementary alignment means interact to urge the seat towards a predetermined final location of the seat relative to the chassis prior to or during transition of the coupling from the second to the first position.
  • the complementary alignment structure provides for alignment of the seat with the chassis in first and second directions at right angles, the first direction being coaxial with or parallel to the usual direction of travel of the wheelchair.
  • the complementary alignment structure provides for alignment of the seat in the first direction to occur prior to alignment in the second direction.
  • a further preferred form of the present invention, or the first preferred form thereof, is characterised in that the coupling is adapted to automatically change from the second to the first position on the close approach of the seat to, or on its arrival at, the first position.
  • FIGS 1-3 are views of the chassis in which:
  • Figures 4-6 are views of the seat in which:
  • a given component has the same reference numeral in each figure in which it appears. Items frequently associated with a wheel chair, such as foot rests, are omitted to improve the comprehensibility of the drawings.
  • the wheel chair has as major components a structurally discrete chassis 11 and a structurally discrete seat 12.
  • the chassis 11 comprises side frames 15, 16 linked by upper transverse bars 17, 18 and lower transverse bars 19, 20.
  • Each lower corner of the chassis 11 is equipped with a castor action wheel 14 to allow for the combined chassis and chair (or the chassis on its own) to be propelled and manoeuvred.
  • the chassis 11 includes part of a complementary alignment structure made up of: a crutch 21 providing for fore-and-aft alignment; triangular projections 22, 23 on the transverse bar 17 and projections 24, 25 on the transverse bar 18 which projections all provide for lateral alignment.
  • a complementary alignment structure made up of: a crutch 21 providing for fore-and-aft alignment; triangular projections 22, 23 on the transverse bar 17 and projections 24, 25 on the transverse bar 18 which projections all provide for lateral alignment.
  • the function of the alignment structure will be described hereafter with reference to longitudinal axis X.
  • the arrow F indicates the normal forward direction of the wheel chair when in use.
  • the coupling includes four pads 26A, 26B. 27A, 27B.
  • Each pad 26A, 26B is mounted on an arm 28 which is secured to bar 29.
  • the bar 29 is mounted for rotation about axis 30 beneath upper transverse bars 17, 18.
  • each pad 27A, 27B is mounted on an arm 31 which is secured to bar 32.
  • the bar 32 is mounted for rotation about axis 33 beneath upper transverse bars 17, 18. In mounting the pads in this way rotation of the bars 29, 32 results in the associated pads being displaced along an arc of a circle centred on axis 30 or 33.
  • the ends of bars 29. 32 are provided with, respectively, off-set plates 34, 35.
  • Plate 35 is pivotably coupled by pin 36 (parallel to but off-set from axis 33) to one end of link 37 whose other end is pivotably coupled by pin 38 to plate 34.
  • Pin 38 is parallel to but offset from axis 30).
  • Handle 39 is secured to bar 29 and can be used to rotate the bar 29 and simultaneously, by virtue of the connection provided by link 37, rod 32.
  • the arrangement of the link 37 and the off-set plates 34, 35 ensure that the bars 29, 32 rotate in an opposite handed way on using handle 39.
  • the seat 12 is made up of a tube frame with a back section 40 and a squab section 41.
  • the back section 40 incorporates a manoeuvering handle 42, rest pad 43 and a lifting sleeve 44.
  • Cross-bar C forms the lower part of the back section 40 and the rear of the squab section 41.
  • the squab section 41 has mounted on it a seating pad 45 (in this case in the form of a commode seat).
  • the side tubes of the squab section 41 S are provided with four stubs 46 each positioned in plan in a square pattern corresponding to disposition of the pads 26A, 26B, 27A, 27B.
  • the seat 12 is a discrete substantially rigid structure which can be supported by a lift arm attached to the seat by way of sleeve 44. In this way the seat 12 supports the weight of an occupant when separated from the chassis. Having engaged lifting sleeve 44 with a hoist the occupant of the seat or an assistant can operate the hoist controls to safely lift or lower the seat (and so the occupant) either with the seat 12 separate from, or even with it attached to, the chassis 11.
  • the seat is positioned above and clear of the chassis 11 and aligned so that stubs 46 are approximately vertically above the pads 26A, 26B, 27A, 27 with the seat facing in the direction of arrow X.
  • the seat On lowering the seat 12 in the direction of the arrow L onto the chassis 11 the seat is caused to firstly take up a correct fore and aft position by the initial contact of the cross-bar C with crutch 21.
  • the crutch 21 has upwardly facing jaws of sufficient width in the direction of axis X to enable a fair degree of misalignment between seat and chassis to be compensated for and ensure the subsequent satisfactory fore-and-aft alignment of the seat relative to the chassis.
  • each stub 46 will strike the upper surface of one of the pads 26A, B and 27A, B.
  • the pads 26A, B and 27A, B will be displaced outwardly allowing the squab side frames to seat on the transverse bars 17, 18.
  • the pads 26A, 26B, 27A, 27B are biassed to restore themselves to a position in which the lower edge of the pads 26A, B and 27A, B engage with upper sides of the stubs 46 to lock the seat 11 on the chassis 12.

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)
  • Seats For Vehicles (AREA)
EP88305871A 1987-06-27 1988-06-27 Rollstuhl Withdrawn EP0297831A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8715149 1987-06-27
GB878715149A GB8715149D0 (en) 1987-06-27 1987-06-27 Wheelchair

Publications (2)

Publication Number Publication Date
EP0297831A2 true EP0297831A2 (de) 1989-01-04
EP0297831A3 EP0297831A3 (de) 1990-07-04

Family

ID=10619714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88305871A Withdrawn EP0297831A3 (de) 1987-06-27 1988-06-27 Rollstuhl

Country Status (2)

Country Link
EP (1) EP0297831A3 (de)
GB (1) GB8715149D0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8907802U1 (de) * 1989-06-26 1989-08-03 Markwald, Ute, Dipl.-Kaufm., 5202 Hennef Sitzschalen-Fahrgestell
EP0361774A1 (de) * 1988-09-29 1990-04-04 Mangar Aids Limited Rollstuhlvorrichtung
EP0490660A2 (de) * 1990-12-13 1992-06-17 F J Payne (Manufacturing) Ltd Rollstuhl

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917312A (en) * 1974-07-29 1975-11-04 Everst & Jennings Inc Indoor/outdoor wheelchair frame
DE2946391A1 (de) * 1978-11-16 1980-05-29 Per Gotthold Bergman Zerlegbarer rollstuhl

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917312A (en) * 1974-07-29 1975-11-04 Everst & Jennings Inc Indoor/outdoor wheelchair frame
DE2946391A1 (de) * 1978-11-16 1980-05-29 Per Gotthold Bergman Zerlegbarer rollstuhl

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361774A1 (de) * 1988-09-29 1990-04-04 Mangar Aids Limited Rollstuhlvorrichtung
DE8907802U1 (de) * 1989-06-26 1989-08-03 Markwald, Ute, Dipl.-Kaufm., 5202 Hennef Sitzschalen-Fahrgestell
EP0490660A2 (de) * 1990-12-13 1992-06-17 F J Payne (Manufacturing) Ltd Rollstuhl
EP0490660A3 (en) * 1990-12-13 1992-07-15 F J Payne (Manufacturing) Ltd Wheel chair

Also Published As

Publication number Publication date
GB8715149D0 (en) 1987-08-05
EP0297831A3 (de) 1990-07-04

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