EP1774943A1 - Motorised wheelchair - Google Patents
Motorised wheelchair Download PDFInfo
- Publication number
- EP1774943A1 EP1774943A1 EP05405579A EP05405579A EP1774943A1 EP 1774943 A1 EP1774943 A1 EP 1774943A1 EP 05405579 A EP05405579 A EP 05405579A EP 05405579 A EP05405579 A EP 05405579A EP 1774943 A1 EP1774943 A1 EP 1774943A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chassis
- seat
- seat frame
- wheelchair
- hinge
- 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- Withdrawn
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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
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
-
- 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
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
- A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
- A61G5/042—Front wheel drive
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- 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)
- Seats For Vehicles (AREA)
Abstract
The wheelchair comprises a chassis (3), which is mounted on wheels, and a seat fixed on a seat frame (2), mounted on the chassis, so as to be movable between a driving position of the seat and a service position of the seat allowing access to the chassis. In this view, the seat frame is mounted on the chassis through a trapezium type device (18, 21, 6, 3) arranged to displace the seat according to a slightly curved translation movement.
Description
- The present invention relates to a motorised wheelchair comprising a chassis, which is mounted on wheels, and a seat fixed on a seat frame mounted on the chassis so as to be movable between a driving position and a service position allowing access to the chassis.
- A motorized wheelchair of the above mentioned type is known from
GB 2269143 - Hence it is a general object of the present invention to provide a motorised wheelchair of the above-mentioned type that avoids, in particular, these disadvantages.
- With this end in view, the motorised wheelchair according to the present invention concerns a motorised wheelchair as defined in claim 1. Important features of the wheelchair according to the present invention are further defined in the claims depending on claim 1.
- An embodiment of a motorised wheelchair according to the invention will be described hereafter by way of example and with reference to the appending drawing.
- Figs 1 to 3 are respectively a three-quarter front view, a side view and a rear view of an example of a wheelchair according to the present invention,
- Fig. 4 is a partial schematic perspective view of the seat frame and of the chassis of the wheelchair of Fig. 1 in the driving position of the seat,
- Fig. 5 is a partial schematic perspective view of the seat frame and of the chassis of the wheelchair of Fig. 1, after the first displacement step of the seat frame,
- Fig. 6 is a partial schematic perspective view of the seat frame and of the chassis of the wheelchair of Fig. 1, after a subsequent displacement step of the seat frame,
- Fig. 7 is a partial schematic perspective view of the seat frame and of the chassis of the wheelchair of Fig. 1, in the service position of the seat after the last displacement step of the seat frame,
- Fig. 8 is a side view of the seat frame and of the chassis of the wheelchair of Fig. 1, in the driving position of the seat,
- Fig. 9 is a side view of the seat frame and of the chassis of the wheelchair of Fig. 1, after the first displacement step of the seat frame,
- Fig. 10 is a side view of the seat frame and of the chassis of the wheelchair of Fig. 1, in a subsequent (but not last) displacement step of the seat frame, and
- Figs 11 to 13 are partial schematic views of the locking system of the seat frame in the driving position of the seat.
- The wheelchair represented on Fig. 1 comprises a seat 1 secured to a
seat frame 2 mounted on achassis 3, said chassis being itself mounted onwheels 4. Thelegrest 26 is secured to theseat frame 2. - As illustrated on Figs 4 to 7, the
seat frame 2 mainly comprises twolongitudinal elements 5 and 6 and twotransversal elements chassis 3 so as to be movable between a driving position as shown on Figs 4 and 8 and a service position as shown on Fig. 7 allowing access to the battery and motors located in the chassis. In that purpose, theseat frame 2 is connected to the chassis through a trapezium type device comprising two pairs oflateral members lateral members lateral member 18 being on one of itsends 20 hinged to thechassis 3 at a location corresponding approximately to the middle of the length of the seat frame when the seat frame is in the driving position of the seat, and on itsother end 19 hinged at the free end of anelement 24 protruding out of theseat frame 2 in the prolongation of theelement 7. The secondlateral member 21 is hinged on one of itsends 22 on thelateral element 6 of the seat frame, at about one third of its length from the rear part of the seat frame, and on itsother end 23 is hingedly mounted on the ends of a transversal horizontal bar ortube 15. Said transversal horizontal bar ortube 15 is in its turn hingedly mounted to be translated in rotation parallely to anaxis 16, 16' parallel to said horizontal bar ortube 15, and which can be secured to said chassis or to atilt mechanism 17 of the seat, when the seat is provided with such a tilt mechanism. - The trapezium type device allowing the displacement of the seat from a driving position to a service position is arranged in a manner to avoid any increase of height of the wheelchair when the seat is in the driving position. To this end, as illustrated on Figs 4 and 8, due to their arrangement, the
lateral members longitudinal elements 5 and 6 of the seat frame, on which are hinged thelateral members 21 is smaller than the internal width of the chassis. - As illustrated on Figs 11 to 13, the locking of the seat frame in the driving position of the seat illustrated in Figs 4 and 8 is obtained on the one part by the action of two
claws 11, 11' fixed to thefront element 8 of theseat frame 2, said claws being clampled on the horizontal bar ortube 15, and on the other part by the action of twoscrews 25, 25' which fix the seat frame to the chassis through the transversal axis 30 (see also Fig. 4). - For moving the seat frame from the driving position of the seat to the service position of the seat, first the
screws 25, 25' must be removed from their fixing position on the chassis. Secondly, as shown in Figs 11 to 13, abowden cable 33 crossing therear element 7 of the seat frame and connected at its twoends 34, 34' to theclaws 11, 11' must be pulled in the direction of thearrow 35 on Fig. 11, which opens theclaws 11, 11' and thereby disconnects thetransversal element 8 of theseat frame 2 from the transversal bar ortube 15. By pulling the seat to slightly recline the same in the direction of thearrow 30 on Fig. 9, the claws are completely disconnected from the transversal bar or tube 15 (see also Fig. 5). Then, by pulling the seat in the up direction, thelateral members gas springs 24, 24' fixed to the internal side of the chassis and acting on thelateral members 18. - Since, apart from the first reclining movement of the seat in the first step of the displacement, the seat frame remains substantially horizontal during the whole movement (that is why the movement of the seat has been called a slightly curved translation movement), avoiding any important forwards inclination of the seat.
- Further, due to the action of the two
lateral gas springs 24, 24', the displacement movement of the seat can be easily handled by a single person, said gas springs ensuring the positioning of the seat in the service position once displaced. - Further, it is to be noted that the device is provided with a safety means for disabling the drive mode of the wheelchair when the seat is removed from its driving position. Such safety means can comprise a micro switch or any other suitable switch placed on any suitable part of the seat frame.
Claims (10)
- A motorised wheelchair comprising a chassis (3), which is mounted on wheels (4), and a seat fixed on a seat frame (2) mounted on the chassis so as to be movable between a driving position and a service position allowing access to the chassis, characterised in that it comprises a trapezium type device (18, 21, 6, 3) arranged to displace said seat according to a slightly curved translation movement.
- Wheelchair according to claim 1, characterised in that said trapezium type device comprises two pairs of lateral members (18, 21) disposed on both sides of the wheelchair, each of said first lateral members (18) being mounted on its first end (20) to hinge on the chassis (3) and on its second end (19) to hinge on the seat frame (6), each of said second lateral members (21) being mounted on its first end (22) to hinge on said seat frame (6) and on its second end (23) to hinge on a transversal horizontal axle (15), said axle being mounted to be translated in rotation around an axis (16, 16') secured to a tilt mechanism (17) of the seat.
- Wheelchair according to claim 1, characterised in that said trapezium type device comprises two pairs of lateral members disposed on both sides of the wheelchair, each of said first lateral members being mounted on its first end to hinge on the chassis and on its second end to hinge on the seat frame, each of said second lateral members being mounted on its first end to hinge on said seat frame and on its second end to hinge on a transversal horizontal axle, said axle being mounted to be translation in rotation around an axis secured to said chassis.
- Wheelchair according to any one of claims 1 to 3, characterised in that the displacement of said trapezium type device is assisted by two spring means (24, 24') supported on one of there ends by said chassis (3).
- Wheelchair according to claims 2 or 3 and 4, characterised in that each of said spring means act on its other end on one of said first lateral member (18, 21).
- Wheelchair according to any one of the preceding claims, characterised in that it comprises a locking means to secure said seat frame to the chassis in the driving position of the seat.
- Wheelchair according to the preceding claim, characterised in that said locking means comprise two screws (25, 25') including head screws able to be hand manipulated.
- Wheelchair according to claim 6 or 7, characterised in that said locking means comprise two claws (11, 11') mounted on the front part (8) of the seat frame (2).
- Wheelchair according to any one of the preceding claims, characterised in that it comprises a safety means arranged to disable the driving mode when the seat frame is removed from its driving position.
- Wheelchair according to the preceding claim, characterised in that said safety means comprise at least one switch.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05405579A EP1774943A1 (en) | 2005-10-11 | 2005-10-11 | Motorised wheelchair |
PCT/IB2006/053740 WO2007043016A1 (en) | 2005-10-11 | 2006-10-11 | Motorised wheelchair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05405579A EP1774943A1 (en) | 2005-10-11 | 2005-10-11 | Motorised wheelchair |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1774943A1 true EP1774943A1 (en) | 2007-04-18 |
Family
ID=35929737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05405579A Withdrawn EP1774943A1 (en) | 2005-10-11 | 2005-10-11 | Motorised wheelchair |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1774943A1 (en) |
WO (1) | WO2007043016A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011054647B4 (en) * | 2011-10-20 | 2017-06-29 | Drive Medical Gmbh & Co. Kg | Foldable rollator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2269143A (en) * | 1992-07-29 | 1994-02-02 | Alexander Rowlands | Wheelchair with monocoque chassis and pivotable seat. |
GB2275029A (en) * | 1993-02-12 | 1994-08-17 | Stephen John Rose | Wheelchairs |
WO2000021478A1 (en) * | 1998-09-28 | 2000-04-20 | Hans Balle Aps | Lift, preferably for seats on wheelchairs |
EP1417948A1 (en) * | 2002-10-28 | 2004-05-12 | Pride Mobility Products, Corporation | Transportable powered wheelchair |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4613151A (en) * | 1984-02-16 | 1986-09-23 | Kielczewski William J | High/low extension-lift power wheelchair |
US5011175A (en) * | 1989-06-05 | 1991-04-30 | Nicholson J Dudley | Wheelchair |
-
2005
- 2005-10-11 EP EP05405579A patent/EP1774943A1/en not_active Withdrawn
-
2006
- 2006-10-11 WO PCT/IB2006/053740 patent/WO2007043016A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2269143A (en) * | 1992-07-29 | 1994-02-02 | Alexander Rowlands | Wheelchair with monocoque chassis and pivotable seat. |
GB2275029A (en) * | 1993-02-12 | 1994-08-17 | Stephen John Rose | Wheelchairs |
WO2000021478A1 (en) * | 1998-09-28 | 2000-04-20 | Hans Balle Aps | Lift, preferably for seats on wheelchairs |
EP1417948A1 (en) * | 2002-10-28 | 2004-05-12 | Pride Mobility Products, Corporation | Transportable powered wheelchair |
Also Published As
Publication number | Publication date |
---|---|
WO2007043016A1 (en) | 2007-04-19 |
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Effective date: 20071019 |