EP4243752A1 - Fauteuil roulant, présentant des jambes support de roues, articulees sur une platine support d'assise en vue d'etre regroupees en position de pliage - Google Patents
Fauteuil roulant, présentant des jambes support de roues, articulees sur une platine support d'assise en vue d'etre regroupees en position de pliageInfo
- Publication number
- EP4243752A1 EP4243752A1 EP21799302.1A EP21799302A EP4243752A1 EP 4243752 A1 EP4243752 A1 EP 4243752A1 EP 21799302 A EP21799302 A EP 21799302A EP 4243752 A1 EP4243752 A1 EP 4243752A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leg
- plate
- legs
- wheelchair
- configuration
- 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.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 38
- 230000035939 shock Effects 0.000 claims description 11
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
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
- 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
-
- 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
-
- 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
- A61G5/1054—Large wheels, e.g. higher than the seat portion
-
- 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
- A61G5/1081—Parts, details or accessories with shock absorbers or other suspension arrangements between frame and 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
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0891—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having rigid supports, e.g. seat or back supports which retain their shape after folding of the wheelchair
Definitions
- Wheelchair having wheel support legs, articulated on a seat support plate in order to be grouped together in the folding position
- the field of the invention is that of the design and manufacture of equipment for people with reduced mobility.
- the invention relates to a wheelchair of the type comprising at least three wheel support legs, including two side wheels and a central, front or rear wheel.
- these comprise two lateral sub-assemblies, each carrying a rear wheel and a front wheel, the two sub-assemblies being connected by two rigid elements crossing each other and being hinged together in their center, so that the two sub-assemblies can be separated from each other in the rolling position or, in the folding position, moved closer together, almost one against the other other.
- wheelchairs for sports activities are designed to ensure their lightness as much as possible. For this reason, wheelchairs for sports activities do not incorporate a complex structure for their folding, such as those mentioned above.
- the aim of the invention is in particular to overcome these drawbacks of the prior art.
- the object of the invention is to provide a wheelchair, of the transfer or transport type or of the type for sports activities, which has a structure that is both light for its maneuverability and which is provided to allow the folding of the wheelchair. .
- the invention also aims to provide such a wheelchair which makes it possible to pass from a rolling configuration to a folded configuration, or vice versa, easily and quickly.
- the invention also aims to provide such a wheelchair which, although of light structure, ensures the comfort of the user.
- a wheelchair of the type comprising a frame from which extend at least three legs each having a lower end carrying at least one wheel and an upper end connected to the chassis, among which two lateral legs each carrying a lateral wheel and at least one central leg carrying at least one directional wheel, the legs having, according to a configuration rolling, an inclined position in which their lower ends have a spacing between them greater than that between their upper ends, characterized in that the chassis comprises a central plate, at least the side legs each being mounted articulated around an articulation on the central plate and movable around the articulation between the rolling configuration and a folding configuration, in which the lateral legs are pivoted, in the direction of the central leg, and grouped together in the vicinity of each other, characterized in that the chassis comprises, for each leg, a pivoting stopper surmounting the leg to prevent the pivoting of the leg beyond a predetermined angular travel from the rolling configuration, and in that the plate has, for each
- a wheelchair can have two characteristics that are a priori antagonistic according to the prior art, namely: having a light frame and being foldable.
- the folding is not obtained by means of a complex frame implementing articulated crosses, connecting rods or even locking systems, and does not involve the implementation of side and/or seat support tubular sub-assemblies.
- the frame of a wheelchair according to the invention is foldable thanks to the implementation of a particularly light structure in which the frame is essentially reduced to the plate, and in which the folding is simply obtained by mounting the legs in an articulated manner on the plate. It is understood that with such a technique, the folding or unfolding is done quickly and simply, insofar as it suffices to rotate the side legs, and possibly the central leg, to move them from the position of taxiing in the stowed position, or vice versa.
- the person who manipulates the wheelchair to bring it into its rolling configuration has very few gestures to make, and does not have to worry about the locking in rolling configuration since the mere weight of the person seated on the wheelchair guarantees that the wheelchair is maintained in its rolling configuration.
- the frame consisting essentially of the plate which supports the legs, the latter can be designed with reduced dimensions, that is to say dimensions necessary and sufficient to constitute a seat support. between the two side wheels.
- the user is satisfied, to pass the wheelchair from its folding configuration to its rolling configuration, to pivot the legs until bringing them into abutment against the frame.
- the legs occupying in the rolling position an inclined position (according to which the longitudinal axis of the legs forms a non-zero angle with the vertical axis and the gap between the lower ends of the lateral legs is greater than or equal to the width of the plate), the sheer weight of a person sitting on the chair (or even the sheer weight of the chair alone) is sufficient to maintain both:
- the legs are pivoted and grouped close to each other under the plate.
- the side legs are advantageously mounted articulated on the plate around an axis parallel to a median axis between the side legs.
- the side legs are mounted articulated on the plate around an axis orthogonal to a median axis between the side legs.
- the central leg is also mounted articulated on the plate, around an axis orthogonal to a median axis between the side legs.
- the wheelchair comprises, for each leg, at least one shock absorber between the leg and the plate, in contact with the leg and the plate in the rolling configuration, and intended to produce a damping of the tilting of the leg for pivoting of the leg approaching a predetermined angular stroke from the folding configuration.
- the plate has, for each leg, a cage in which extends an axis around which the leg is capable of pivoting, the upper end of the leg being housed in the cage facing a bottom of the cage, the shock absorber being mounted in the extension of the upper end of the leg and intended to bear against the bottom of the cage.
- Such an embodiment proves to be particularly effective and also has the advantage of involving very simple and very rapid assembly.
- the damper consists of an elastomer pad.
- the plate comprises two blocks one on top of the other providing between them the housings for the hinge pins of the legs.
- Such a solution facilitates the assembly of the hinge pins of the legs, this with machining of the blocks in question which can be carried out inexpensively.
- the plate has, for each leg, a groove in height in which the upper end of the leg is housed and allows movement in pivoting of the leg.
- Such an assembly therefore makes it possible to embed the upper end of the legs in the plate while allowing the pivoting of the legs around their articulation on the plate.
- the articulated mounting of the legs on the plate is carried out without having to increase the dimensions of the plate to allow the mounting and the pivoting of the legs.
- FIG. 1 and 2 are overall views of a wheelchair according to the invention, respectively in the rolling configuration and in the folded configuration;
- - Figures 3 and 4 are perspective views of a subassembly of a wheelchair according to the invention, respectively in the rolling configuration and in the folded configuration;
- FIGS. 5 and 6 are top views of a subassembly of a wheelchair according to the invention, respectively in the rolling configuration and in the folded configuration;
- FIG. 7 is a view of a subassembly of a wheelchair according to an alternative embodiment of the invention, in which is schematically illustrated the transition from the rolling configuration to the folded configuration;
- FIG. 8 and 9 schematically illustrate the frame of a wheelchair according to the invention, respectively seen in perspective and from the side.
- a wheelchair according to the invention is of the type comprising:
- each leg - at least three legs 2, extending from the frame 1 and each having a lower end 20 carrying at least one wheel R, each leg having an upper end 21 connected to the frame.
- the wheelchair according to the invention has:
- At least one central leg 2C carrying at least one directional wheel 23 (in this case carrying a hanger 230 provided with a directional wheel at each of its ends).
- the legs 2, and in particular at least the side legs 2L, are mounted on the frame so as to be able to occupy two distinct configurations, namely:
- the chassis comprises a central plate 10 on which the lateral legs 2L are each mounted articulated around a joint 100.
- the lateral legs 2L are movably mounted on the central plate around the joint 100 between the rolling configuration ( Figures 1 and 3) and the folding configuration ( Figures 2 and 4).
- the side legs 2L are pivoted in the folding configuration in the direction of the central leg 2C, the legs 2 being grouped close to each other in the folding configuration.
- the legs 2 are, in the folding configuration, pivoted and grouped close to each other under the plate 10.
- the central leg 2C is also mounted articulated on the plate 10.
- the side legs 2L are mounted articulated on the plate 100 around an axis 101 parallel to a median axis A (FIG. 5) between the side legs 2L.
- the central leg 2C is for its part mounted articulated on the plate 10 around an axis 103 orthogonal to the median axis A between the lateral legs 2L.
- the legs 2 are pivoted from the rolling configuration around their respective articulation.
- the lateral legs 2L are pivoted in the direction of the space extending under the plate 10, as well as the central leg 2C.
- the lateral legs 2L are indeed pivoted in the direction of the central leg 2C when the latter occupies its position in the folding configuration.
- the legs 2 are all grouped close to each other under the plate 10.
- the lateral legs 2L are mounted articulated on the plate 10 around an axis 102 orthogonal to the median axis A between the lateral legs 2L.
- the lateral legs 2L are, from the rolling configuration, pivoted around each of their axes 102 in the direction of the central leg 2C, such illustrated by the arrows F1 and F2 (the central leg being able to remain in the same position in the rolling configuration and in the folding configuration).
- the legs are grouped close to each other, in front or behind the chair depending on the position of the central leg 2C.
- the plate 10 has a cage 12 in which extends the axis around which the corresponding leg 2 is capable of pivoting.
- the axis 101 extends into the cage 12 and, for the central leg 2C, the axis 103 extends into the cage 12.
- the upper end 21 of the legs 2 is housed in cage 12.
- this cage 12 is delimited by the walls of a groove 105 extending over the entire height of the plate 10 allowing both to accommodate the upper end 21 of each leg and allowing movement in pivoting of the leg inside the groove.
- the chassis comprises, for each leg, a pivot stop 11 surmounting the leg to prevent the pivoting of the leg beyond a predetermined angular travel from the rolling configuration, that is that is to say so that the legs do not present, with respect to vertical, an inclination greater than that illustrated by FIGS. 1 and 3 for example.
- a part constituting the stopper 11 in pivoting is attached to the plate 10 to close the cage 12 from above.
- This part 110 as illustrated in Figures 8 and 9, also constitutes a seat support coupled to the plate 10, with, for information, a series of elastic balls 111 interposed between the part 110 and the plate 10.
- a damper 24 is interposed between the corresponding leg 2 and the plate 10. These dampers are intended to be in contact with the leg and the plate in the rolling configuration, to produce a damping of the tilting of the leg for pivoting of the leg approaching a predetermined angular stroke from the folding configuration.
- each shock absorber is in contact with a leg and the plate, so that, due to shocks or vibrations exerted on the wheels of the chair or due to tremors imposed by the user himself, each shock absorber is capable of being compressed to dampen the corresponding jolt or vibration.
- each shock absorber is mounted in the extension of the upper end of a leg and is intended to come into contact with the bottom 120 of the corresponding cage 12 in the wheelchair rolling position.
- each leg is limited by the abutment of the upper surface 210 of the upper end 21 of each leg against the lower face part 110 which closes each cage 12 in height.
- the shock absorbers 24 are compressed between the upper end 21 of each leg, or of one of the legs, thus preventing upper surface comes to shock the part 110 too perceptibly by the user of the chair.
- the weight of the user installed in the chair tends to constrain the legs in the rolling configuration. Indeed, the user's weight is exerted on the seat support constituted by the part 110, which results in a force from the underside of the part 110 being exerted on the upper ends 21 of the legs.
- the upper ends project in height above the corresponding cage 12, this projecting part extending between the axis of the articulation and the bottom of the cage. It follows that, by pressing on this part projecting from the upper end above the cage, pressing on the latter tends to promote the inclined position of the rolling configuration.
- the pre-determined maximum angular travel has been reached, the upper surface of the upper ends of the legs is in abutment under the part 110, preventing each leg from tilting further.
- each damper 24 consists of an elastomer pad.
- These elastomer pads each have a base and the upper ends of the legs have a cavity intended to receive the base of the pads.
- the assembly of the base of the bearings in the cavity is carried out by light force (that is to say by compressing the elastomer material of the bearing to introduce it into the cavity of the upper end), ensuring the maintenance of the pad in the upper end of the corresponding leg.
- the plate 10 comprises two blocks 102 and 103 arranged one on the other (FIGS. 8 and 9) and forming between them housings 104 (FIG. 8) intended to receive the axes of articulation of the legs.
- the joining of the two blocks 102 and 103 together is carried out by means of fixing means passing through the two blocks, the elastic balls 111 and the part 110.
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)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2011566A FR3115981B1 (fr) | 2020-11-10 | 2020-11-10 | Fauteuil roulant, présentant des jambes support de roues, articulées sur une platine support d’assise en vue d’être regroupées en position de pliage |
PCT/EP2021/080861 WO2022101111A1 (fr) | 2020-11-10 | 2021-11-08 | Fauteuil roulant, présentant des jambes support de roues, articulees sur une platine support d'assise en vue d'etre regroupees en position de pliage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4243752A1 true EP4243752A1 (fr) | 2023-09-20 |
Family
ID=75108391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21799302.1A Pending EP4243752A1 (fr) | 2020-11-10 | 2021-11-08 | Fauteuil roulant, présentant des jambes support de roues, articulees sur une platine support d'assise en vue d'etre regroupees en position de pliage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4243752A1 (fr) |
CN (1) | CN116806137A (fr) |
FR (1) | FR3115981B1 (fr) |
WO (1) | WO2022101111A1 (fr) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007062654B4 (de) * | 2007-12-24 | 2010-02-04 | Gregor Schulze-Eyssing | Klappbares, behindertengerechtes Trike |
DK2140846T3 (da) | 2008-07-03 | 2011-07-18 | Invacare Int Sarl | Sammenklappelig kørestol |
EP2156814A1 (fr) | 2008-08-22 | 2010-02-24 | Invacare International Sàrl | Fauteuil roulant pliable |
CN104703571A (zh) | 2012-07-31 | 2015-06-10 | 英维康国际责任有限公司 | 包含自锁定装置的可折叠轮椅架 |
ES2548844T3 (es) | 2013-04-23 | 2015-10-21 | Gregor Horacek | Silla de ruedas plegable |
US8998245B1 (en) | 2014-08-13 | 2015-04-07 | Sunrise Medical (Us) Llc | Folding wheelchair |
CN204197172U (zh) | 2014-11-05 | 2015-03-11 | 常州高尔登科技有限公司 | 一种折叠代步车 |
US10335330B2 (en) * | 2017-03-02 | 2019-07-02 | Travelsys4u Ltd. | Motor-driven chair steered by seat rotation |
-
2020
- 2020-11-10 FR FR2011566A patent/FR3115981B1/fr active Active
-
2021
- 2021-11-08 WO PCT/EP2021/080861 patent/WO2022101111A1/fr active Application Filing
- 2021-11-08 EP EP21799302.1A patent/EP4243752A1/fr active Pending
- 2021-11-08 CN CN202180090060.5A patent/CN116806137A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3115981A1 (fr) | 2022-05-13 |
FR3115981B1 (fr) | 2022-11-04 |
WO2022101111A1 (fr) | 2022-05-19 |
CN116806137A (zh) | 2023-09-26 |
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