WO1995032700A1 - Collapsible wheelchair frame - Google Patents

Collapsible wheelchair frame Download PDF

Info

Publication number
WO1995032700A1
WO1995032700A1 PCT/SI1995/000010 SI9500010W WO9532700A1 WO 1995032700 A1 WO1995032700 A1 WO 1995032700A1 SI 9500010 W SI9500010 W SI 9500010W WO 9532700 A1 WO9532700 A1 WO 9532700A1
Authority
WO
WIPO (PCT)
Prior art keywords
flexibly
joint parts
joint part
support bar
joint
Prior art date
Application number
PCT/SI1995/000010
Other languages
French (fr)
Inventor
Vladimir MARKOVIC^¿
Original Assignee
Markovic Vladimir
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 Markovic Vladimir filed Critical Markovic Vladimir
Priority to AU25429/95A priority Critical patent/AU2542995A/en
Publication of WO1995032700A1 publication Critical patent/WO1995032700A1/en

Links

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
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • A61G5/021—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person having particular propulsion mechanisms
    • A61G5/023—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person having particular propulsion mechanisms acting directly on hubs or axis
    • 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
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • A61G5/024—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person having particular operating means
    • A61G5/025—Levers
    • 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
    • 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
    • A61G5/0833—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair
    • A61G5/0841—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding

Definitions

  • the invention concerns a collapsible wheelchair frame which is constructed so that the wheelchair is easily folded for carrying or transportation without the use of any additional tools.
  • the proposed construction provides sufficient solidity in using the wheelchair.
  • the invention belongs to IPC class A 61 G 05/02.
  • the technical problem which is successfully solved by the proposed construction consists in carrying out a frame which would make it possible to fold the wheelchair to a dimension suitable for carrying and/or transporting the wheelchair e.g. in a motor car, and at the same time preserve all the vital functions of the wheelchair (possibility of manual drive, stability, agility, and the like).
  • a normal collapsible wheelchair has the base frame carried out in such a way that the bigger rear drive wheels are fixed to the frame which is transversely assembled.
  • the front and the rear transverse supports have to be pushed away, then the wheelchair is "pressed together” by bringing closer the parts on which the drive wheels are mounted.
  • a wheelchair thus folded preserves its outer dimensions which equal the side projection dimensions of an assembled wheelchair; this means that it is very difficult to transport such a wheelchair in a cab or boot of a motor car and that it is by all means very difficult to load and unload a wheelchair thus folded.
  • a wheelchair frame in accordance with the invention makes it possible to link its joint parts by means of flexible, interconnected bars, to fold the frame longitudinally and transversely by pulling the seat rods tied together by a seat canvas out of the upper front joint parts. In folded state, all four upper joint parts are brought closer to each other by approaching each two opposite upper joint parts.
  • Fig. 1 is an axonometric side view of a collapsible wheelchair frame in accordance with the invention in unfolded state;
  • Fig.2 illustrates a collapsible wheelchair frame in accordance with the invention in folded state.
  • Figure 1 illustrates a collapsible wheelchair frame in accordance with the invention in axonometric side view in unfolded state.
  • the frame of the wheelchair consists of an assembly of rods which are flexibly linked in joint parts A through F.
  • two upright tubes 1 , 1 ' are inserted, and into the upper sides two wheelchair pushing handles 3, 3'are inserted.
  • the pushing handles 3, 3' are tied together by a backrest belt 4.
  • the opposite ends of the tubes 1 , 1 ' are pushed into the lower joint parts C, D, and onto the same joint parts C, D rollers 2, 2' are mounted in a rotating way.
  • the joint parts A and D are flexibly interlinked by a crossbar 5, while the joint parts B and C are flexibly interlinked by a crossbar 5'.
  • the crossbars 5, 5' are also flexibly interlinked.
  • a support bar 6 is carried out of the upper joint part A ending in a drive wheel 9, while a support bar 6' is carried out of the upper joint part B ending in a drive wheel 9'.
  • the support bars 6, 6' are also fitted with hand-operated drives 7, 7' with bidirectional driving effect which are equipped with drive handles 8, 8'.
  • the hand-operated drives 7, 7' may be either directly mounted on the drive wheels 9, 9' or indirectly linked with them via drive belts, as shown in Figure 1 , or via chains or by some other known means X, Y.
  • the upper joint parts E, F are at the one side flexibly linked with the rear lower joint parts C, D via crossbars 10, 10', while the crossbars 10, 10' are also flexibly linked with the support bars 6, 6', and the front upper joint parts E, F are linked with crossbars 11, 11' with the support bars 6, 6' at the place where the drive wheels 9, 9' are mounted.
  • the front upper joint part E is linked via the crossbar 11 with the support bar 6', while the upper joint part F is linked with the support bar 6 via the crossbar 11 '.
  • the crossbars 11 , 11 ' are also flexibly interlinked.
  • a collapsible wheelchair frame in accordance with the invention thus folded occupies very little space.

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)
  • Handcart (AREA)

Abstract

The invention concerns a collapsible wheelchair frame which is constructed so that the wheelchair can be easily folded for carrying or transportation, without the use of any additional tools. In addition, the proposed construction provides sufficient solidity in using the wheelchair. The construction of a collapsible wheelchair frame in accordance with the invention allows the linking of joint parts (A through F) with flexible, interlinked crossbars (5, 5', 10, 10', 11, 11') in such a way that the frame is longitudinally and transversely foldable by pulling out seat rods (13, 13') stuck into the upper front joint parts and tied together by seat canvas (14). In folded state all four upper joint parts (A, B, E, F) are brought closer to each other in such a way that, the each two opposite upper joint parts (A and F, B and E) are approached.

Description

COLLAPSIBLE WHEELCHAIR FRAME
The invention concerns a collapsible wheelchair frame which is constructed so that the wheelchair is easily folded for carrying or transportation without the use of any additional tools. In addition, the proposed construction provides sufficient solidity in using the wheelchair. The invention belongs to IPC class A 61 G 05/02. The technical problem which is successfully solved by the proposed construction consists in carrying out a frame which would make it possible to fold the wheelchair to a dimension suitable for carrying and/or transporting the wheelchair e.g. in a motor car, and at the same time preserve all the vital functions of the wheelchair (possibility of manual drive, stability, agility, and the like).
A normal collapsible wheelchair has the base frame carried out in such a way that the bigger rear drive wheels are fixed to the frame which is transversely assembled. When the frame is being folded, the front and the rear transverse supports have to be pushed away, then the wheelchair is "pressed together" by bringing closer the parts on which the drive wheels are mounted.
A wheelchair thus folded preserves its outer dimensions which equal the side projection dimensions of an assembled wheelchair; this means that it is very difficult to transport such a wheelchair in a cab or boot of a motor car and that it is by all means very difficult to load and unload a wheelchair thus folded.
In some wheelchair versions it is possible to take off the wheels; in this way the outer dimensions of the folded wheelchair are made smaller, but the disassembling and assembling of the wheelchair is more difficult.
The construction of a wheelchair frame in accordance with the invention makes it possible to link its joint parts by means of flexible, interconnected bars, to fold the frame longitudinally and transversely by pulling the seat rods tied together by a seat canvas out of the upper front joint parts. In folded state, all four upper joint parts are brought closer to each other by approaching each two opposite upper joint parts.
The invention will be described by way of example and with reference to the accompanying drawings in which:
Fig. 1 is an axonometric side view of a collapsible wheelchair frame in accordance with the invention in unfolded state;
Fig.2 illustrates a collapsible wheelchair frame in accordance with the invention in folded state.
Figure 1 illustrates a collapsible wheelchair frame in accordance with the invention in axonometric side view in unfolded state. Essentially, the frame of the wheelchair consists of an assembly of rods which are flexibly linked in joint parts A through F. Into the lower sides of the upper joint parts A, B two upright tubes 1 , 1 ' are inserted, and into the upper sides two wheelchair pushing handles 3, 3'are inserted. The pushing handles 3, 3' are tied together by a backrest belt 4.
The opposite ends of the tubes 1 , 1 ' are pushed into the lower joint parts C, D, and onto the same joint parts C, D rollers 2, 2' are mounted in a rotating way. The joint parts A and D are flexibly interlinked by a crossbar 5, while the joint parts B and C are flexibly interlinked by a crossbar 5'. The crossbars 5, 5' are also flexibly interlinked. A support bar 6 is carried out of the upper joint part A ending in a drive wheel 9, while a support bar 6' is carried out of the upper joint part B ending in a drive wheel 9'. The support bars 6, 6' are also fitted with hand-operated drives 7, 7' with bidirectional driving effect which are equipped with drive handles 8, 8'. The hand-operated drives 7, 7' may be either directly mounted on the drive wheels 9, 9' or indirectly linked with them via drive belts, as shown in Figure 1 , or via chains or by some other known means X, Y.
The upper joint parts E, F are at the one side flexibly linked with the rear lower joint parts C, D via crossbars 10, 10', while the crossbars 10, 10' are also flexibly linked with the support bars 6, 6', and the front upper joint parts E, F are linked with crossbars 11, 11' with the support bars 6, 6' at the place where the drive wheels 9, 9' are mounted. The front upper joint part E is linked via the crossbar 11 with the support bar 6', while the upper joint part F is linked with the support bar 6 via the crossbar 11 '. The crossbars 11 , 11 ' are also flexibly interlinked.
At the inside of the lower part of the support bars 6, 6' feet supports 12, 12' are mounted.
Into the upper joint parts A, B also the ends of seat rods 13, 13' are flexibly mounted, the rods being tied together by a seat canvas 14 and, when the collapsible wheelchair frame under the invention is not folded, their opposite ends are stuck under the front upper joint parts E, F.
In order to fold a collapsible wheelchair frame into the state shown in Figure 2, one first has to push and lift the ends of the seat rods 13, 13' out of the front upper joint parts E, F, then push the opposite lying upper joint parts e.g. A towards F and B towards E. In this way one folds the frame longitudinally and transversely, and finally one lowers the seat rods 13, 13'.
A collapsible wheelchair frame in accordance with the invention thus folded occupies very little space.

Claims

CLAIMS:
1. A collapsible wheelchair frame, characterised in that it is longitudinally and transversely foldable by pulling out seat rods (13, 13') stuck under joint parts (E, F) and tied together by seat canvas (14), and by pushing joint part (E) towards joint part (B), and joint part (A) towards joint part (F).
2. A collapsible wheelchair frame as claimed in claim 1 , characterised in that it is composed of two parallel upright tubes (1, 1') of which tube (1) is fitted at the upper end with joint part (A), and tube (1') is fitted with joint part (B), while at the lower end tube (1) is fitted with joint part (C) and tube (1') with joint part (D), whereby on the joint parts (C,D) rollers (2, 2') are mounted and in the joint parts (A, B) pushing handles (3, 3') are mounted which are tied together by backrest belt (4), whereby joint parts (A, D) are flexibly interlinked by crossbar (5), and joint parts (B, C) by crossbar (5'), while both crossbars (5, 5') are also flexibly tied with each other; that support bar (6) is flexibly carried out of joint part (A) and ending in drive wheel (9), and on support bar (6) drive mechanism (7) with drive handle (8) is also mounted; that support bar (6') is flexibly carried out of joint part (B) and ending in drive wheel (9'), and on support bar (6') drive mechanism (7') with drive handle (8') is also mounted; that joint parts (E, C) are flexibly linked by crossbar (10) which is also flexibly mounted to support bar (6), while joint parts (F, D) are flexibly linked by crossbar (10') which is also flexibly mounted onto support bar (6'); that joint part (E) and support bar (6') are interlinked, at the place where drive wheel (9') is mounted, by crossbar (11), while joint part (F) and support bar (6) are interlinked, at the place where drive wheel (9) is mounted, by crossbar (11'), crossbars (11, 11') being also flexibly interlinked; that at the ends of support bars (6, 6') feet supports (12, 12') are mounted from the inside; that in joint parts (A, B) seat rods (13, 13') are flexibly mounted and stuck into joint parts (E, F), which are tied together by seat canvas (14).
3. A collapsible wheelchair frame as claimed in claims 1 and 2, characterised in that drive mechanisms (7, 7') may be mounted directly on drive wheels (9, 9'), or indirectly via drive belts, chains or some other known means (X, Y).
PCT/SI1995/000010 1994-05-30 1995-05-29 Collapsible wheelchair frame WO1995032700A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU25429/95A AU2542995A (en) 1994-05-30 1995-05-29 Collapsible wheelchair frame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI9400242A SI9400242A (en) 1994-05-30 1994-05-30 Collapsible wheelchair frame
SIP-9400242 1994-05-30

Publications (1)

Publication Number Publication Date
WO1995032700A1 true WO1995032700A1 (en) 1995-12-07

Family

ID=20431403

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SI1995/000010 WO1995032700A1 (en) 1994-05-30 1995-05-29 Collapsible wheelchair frame

Country Status (3)

Country Link
AU (1) AU2542995A (en)
SI (1) SI9400242A (en)
WO (1) WO1995032700A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0960044A2 (en) * 1996-10-11 1999-12-01 Wheelchair Carrier, Inc. Lightweight motorized wheelchair
WO2006048913A1 (en) * 2004-11-08 2006-05-11 Ormesa S.R.L. Push chair for elderly or disabled adults foldable in two planes
CN104274285A (en) * 2014-09-27 2015-01-14 吴玲玲 Wheel chair
CN104546325A (en) * 2015-02-02 2015-04-29 宁波德坤工业设计有限公司 Foldable electric wheelchair suitable for aged for shopping

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL4674C (en) *
GB646902A (en) * 1948-08-18 1950-11-29 Stanley Albert Eldridge An invalid chair
US2847058A (en) * 1953-09-10 1958-08-12 Anthony G Allison Folding wheel chair
US4025088A (en) * 1976-04-13 1977-05-24 Rothschild Barbara G Folding wheelchair
US4380343A (en) * 1978-04-24 1983-04-19 Lovell W C Folding scissor frame wheel chair
GB2224980A (en) * 1988-11-08 1990-05-23 Peter James Rae Bradshaw A wheelchair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL4674C (en) *
GB646902A (en) * 1948-08-18 1950-11-29 Stanley Albert Eldridge An invalid chair
US2847058A (en) * 1953-09-10 1958-08-12 Anthony G Allison Folding wheel chair
US4025088A (en) * 1976-04-13 1977-05-24 Rothschild Barbara G Folding wheelchair
US4380343A (en) * 1978-04-24 1983-04-19 Lovell W C Folding scissor frame wheel chair
GB2224980A (en) * 1988-11-08 1990-05-23 Peter James Rae Bradshaw A wheelchair

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0960044A2 (en) * 1996-10-11 1999-12-01 Wheelchair Carrier, Inc. Lightweight motorized wheelchair
EP0960044A4 (en) * 1996-10-11 2001-05-02 Wheelchair Carrier Inc Lightweight motorized wheelchair
WO2006048913A1 (en) * 2004-11-08 2006-05-11 Ormesa S.R.L. Push chair for elderly or disabled adults foldable in two planes
CN104274285A (en) * 2014-09-27 2015-01-14 吴玲玲 Wheel chair
CN104546325A (en) * 2015-02-02 2015-04-29 宁波德坤工业设计有限公司 Foldable electric wheelchair suitable for aged for shopping

Also Published As

Publication number Publication date
SI9400242A (en) 1995-12-31
AU2542995A (en) 1995-12-21

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