EP0326500A1 - Faltbarer Rollstuhl - Google Patents

Faltbarer Rollstuhl Download PDF

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Publication number
EP0326500A1
EP0326500A1 EP89420018A EP89420018A EP0326500A1 EP 0326500 A1 EP0326500 A1 EP 0326500A1 EP 89420018 A EP89420018 A EP 89420018A EP 89420018 A EP89420018 A EP 89420018A EP 0326500 A1 EP0326500 A1 EP 0326500A1
Authority
EP
European Patent Office
Prior art keywords
seat
frame
wheelchair according
articulated
footrest
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Withdrawn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
EP89420018A
Other languages
English (en)
French (fr)
Inventor
Jean Cherpin
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.)
STRATIVER - LES STRATIFIES SA
Original Assignee
STRATIVER - LES STRATIFIES SA
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 STRATIVER - LES STRATIFIES SA filed Critical STRATIVER - LES STRATIFIES SA
Publication of EP0326500A1 publication Critical patent/EP0326500A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to folding wheelchairs, in particular for the sick, disabled or disabled, and which comprise a chassis provided with two large wheels provided with operating circles and two jockey wheels.
  • the improvements which are the subject of the present invention relate to the production of a wheelchair whose seat is comfortable and which can be dismounted from the chassis, so that the two main elements of the chair are separable for easier transport and more convenient handling, in particular due to the lightness of the materials which can constitute the whole.
  • the wheelchair according to the invention is characterized in that its seat is assembled to its chassis by means of a centering of said seat cooperating with a complementary part of said chassis, the seat comprising an articulated footrest which controls the locking the seat and the chassis in the position of use, while folding the footrest against the seat surface eliminates said locking and allows disassembly of said seat relative to the chassis.
  • the underside of the seat surface has a depression through which a latch is resiliently held
  • the chassis has a pivot of shape complementary to that of the depression, said pivot having a hole allowing the bolt to engage in this pivot when released by the footrest in the use position and to be extracted therefrom when the footrest is folded.
  • the depression and the pivot are frustoconical, the footrest being connected to the lock by a funicular element attached to said footrest in the vicinity of its axis of articulation.
  • the chassis 1 is composed of a central frame 3 and two lateral side members 4 connected to said frame by means of connecting rods as will be specified better below.
  • a jockey wheel 5 of small diameter
  • a wheel of large diameter tre 6 is rotatably mounted at the opposite end of each beam.
  • each of the wheels 6 is provided with a circle 6 a which the user actuates to rotate them.
  • connection between the central frame 3 and the two longitudinal members 4 is effected by means of connecting rods 7 articulated on the one hand to the upper part of the frame 3 and on the other hand above the longitudinal members 4.
  • the rods 7 are articulated to a clevis 4 is placed on top of each of the side members 4 and a yoke 3 is disposed in front of the 4a, but secured to the frame 3.
  • the lower part of frame 3 carries a longitudinal axis 8 (fig. 2) on which one of the ends of two connecting rods 9 is articulated, the opposite ends of which are articulated on an axis supported by a gusset 4 b secured to the underside of the side members 4.
  • This is thus determined a system of deformable parallelograms which allows the two side members 4 to be brought closer to one another in order to reduce the size of the chassis during transport.
  • each lever 10 is articulated on the internal face of each spar 4 by one of their ends, while their internal end is bent and has a lumen 10 a having substantially the shape of a square.
  • a finger 11 secured to the frame 3 passes through the light 10 a .
  • the inner end of each lever 10 is pivotally associated with a rod 12 sliding in a hole in a plate 3b of the upper part of the frame 3 (fig. 3 and 4).
  • a compression spring 13 surrounds each rod 12 and pushes the head 12a of the rod downwardly.
  • each rod is assembled at one end of a cable 14, the other end of which is associated with a trigger 15 pivotally mounted in the frame 3 for reasons which will be better explained below.
  • the top of the frame 3 is also provided with a pivot 16 having the shape of a truncated pyramid and which is provided with an axial hole 16 a .
  • two funicular elements 17 are provided intended to serve as security by limiting the maximum spacing of the lon gerons.
  • Each spar is also provided with a brake 18 acting on each of the wheels.
  • the seat 2 firstly comprises a seat surface 19 associated with a metal frame 20, the bottom of which comprises a depression 20 a of shape corresponding to that of the pivot 16 of the chassis 1.
  • the frame also comprises a lock 21 loaded by a spring 22 in the direction of the depression in order to protrude therefrom and enter the hole 16 a of the pivot to lock the seat 2 relative to the chassis 1.
  • the lock 21 is associated by means of a cable 23 with a bent lever 24 articulated relative to the frame 20 by one of its ends, while its other end receives a platform 25 constituting a footrest.
  • the platform 25 is rotatably mounted relative to the lever 24 so that it can be folded against the latter when desired. In the position of use, that is to say when the platform 25 is close to the ground, the lever 24 does not act on the cable 23, so that the spring 22 resiliently holds the latch engaged in the hole of the pivot 16.
  • a backrest 26 provided with a frame 27 whose upper part constitutes a horizontal bar 27 a constituting the operating handle of the wheelchair according to the invention.
  • To the frame 27 are articulated two armrests 28 by means of an axis 29 integral with said frame 27.
  • the latter is pivotally mounted relative to that 20 of the seat surface by means of two axes 30.
  • a housing 31 In the backrest and at right of each armrest is a housing 31 in which a lock 32 moves under the influence of a compression spring 33 which loads said lock towards the outside of the housing 31 which it passes through in a hole 31 a .
  • the lock 32 is connected by a cable 34 to the corresponding armrest 28 which, in the raised position, exerts traction on the lock 32 so that it does not protrude outside the housing 31.
  • the latch 32 is released and the spring 33 projects it into a notch 20b of the frame 20 of the seat surface to lock the backrest in the upright position.
  • the platform 25 is raised against the lever 24 (arrow F1 in fig. 1) then the lever 24 and its plate shape are tilted in the direction of arrow F2 in fig. 6 to bring said lever and its platform on top of the seat surface 19.
  • This pivoting of the lever 24 causes a pull on the cable 23 which consequently displaces the lock 21 to extract it from the pivot 16 of the chassis 1.
  • the latches 32 are unlocked, so that the backrest 26 can be folded against the seat surface according to the arrow F3 in FIG. 6.
  • a flexible clip 35 fixed to the lever 24 can come to cooperate with a press button device carried by the frame 27 so that the backrest is held against the seat surface in the folded position.
  • the user grasps the trigger 15 of the frame 3 to move it upwards, so that the two cables 14 linked to the trigger pull the rods 12 upwards against the reaction of the springs 13 (fig. 4) so that the vertical portions of the lights 10a are disengaged from the fingers 11 which provided their locking in the opened state and come in subtantiellement horizontal portions of the lights thus causing the unlocking levers 10 relative to the frame 3.
  • the wheels come closer automatically to come into the position illustrated in FIG. 3.
  • the two funicular elements 17 limit the spacing of the two side members 4.
  • a wheelchair which is particularly easy to fold and whose elements can be made of extremely light materials such as carbon fiber has therefore been produced to allow easy transport. in the folded position of the two elements 1 and 2.
  • the seat surface and the backrest can be made of thick foam making the comfort appreciable, depressions being formed in the seat surface anatomically.
  • an elastic snap can be provided. as armrests 28 in vertical position relative to the frame 27.
  • each of the side members 4 shown diagrammatically in FIG. 7 carries a horizontal boss 4 c provided with a longitudinal perforation in which engages an axis not shown intended to allow the articulation of a double link 36, 36 ′.
  • Each of these consists of two parallel arms 36 a , 36 b joined by a crosspiece 36 c .
  • the outer end of each arm 36 a , 36 b is perforated to receive the aforementioned axis also passing through the perforation of the boss 4 c .
  • the opposite end of each of the arms of the link 36 is shaped as an ear provided with a circular hole 36 d , 36 e .
  • the ears of the link 36 ′ each have an oblong hole 36 f and 36 g . Each ear is bordered by a stop 36 h , 36 i oriented vertically.
  • the two connecting rods 36, 36 ′ which are identical except for the holes 36 d , 36 e , 36 f , 36 g are nested one in the other so that their holes 36 d , 36 e , 36 f , 36 g correspond when they are in a horizontal position.
  • a handle 38 having a cross section of a trapezoidal section and the upper part of which is provided with a keyhole opening, this is that is to say comprising a part 38 a whose cross section affects the shape of a circle of the same diameter as that of the axis 37 and into which opens a part 38 b with a section identical to that of the axis 37.
  • each spar 4 is provided with a yoke 4 d intended for the articulation of one of the ends 39 a of a lever 39, this end 39 a consists of a head provided with a rod threaded engaging the lever body so as to change its length if desired.
  • the other end 39 b of each lever 39 has a toothing peripheral. This end engages in a transverse groove 38c of the handle 38 to articulate around an axis 40 represented by a broken line and which engages on the one hand in a longitudinal perforation of the handle 38 and elsewhere in a hole in the center of the end 39 b of each lever.
  • the peripheral teeth of their ends 39 b mesh with each other.
  • the yoke 4 d is crossed by an axis not shown which engages in a hole in the end 39 a to allow the articulation of each lever relative to the corresponding spar 4.
  • the axis 37 is engaged in the part 38 b of the handle 38, so that this axis, which is made integral with the ears of the two links, is trapped in the portion 38 b of the handle 38.
  • the two levers 39 are also within the horizontal, as illustrated in fIG. 7. Under these conditions, the spacing of the two beams 4 is determined and locked.
  • the user grasps the handle 38 and lifts it up as illustrated in FIG. 9, so that the axis 37 passes from the part 38 b of this handle into the circular one 38 a .
  • This elevation naturally involves the indexed rotation of the two levers 39 relative to each other by virtue of their teeth.
  • the axis 37 rotates in the part 38 a of this handle so as to bring the two side members 4 as close to each other as possible, as illustrated in FIG. 10.
  • links 36 and the levers 39 can be made of various materials and in particular of composite materials such as resin reinforced with glass fibers.

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)
EP89420018A 1988-01-27 1989-01-25 Faltbarer Rollstuhl Withdrawn EP0326500A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801142A FR2626171B1 (fr) 1988-01-27 1988-01-27 Fauteuil roulant repliable
FR8801142 1988-01-27

Publications (1)

Publication Number Publication Date
EP0326500A1 true EP0326500A1 (de) 1989-08-02

Family

ID=9362828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420018A Withdrawn EP0326500A1 (de) 1988-01-27 1989-01-25 Faltbarer Rollstuhl

Country Status (2)

Country Link
EP (1) EP0326500A1 (de)
FR (1) FR2626171B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439206A1 (de) * 1990-01-10 1991-07-31 Skive Bomi Rollstuhl
WO2002056816A1 (en) * 2001-01-18 2002-07-25 Sunrise Medical Hhg Inc. Assistive opening and closing devices for wheelchairs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115350011B (zh) * 2022-09-09 2025-03-28 江苏瑞布特智能科技有限公司 折叠轮椅

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1442805A (en) * 1973-05-22 1976-07-14 Hille Int Ltd Wheel chair chassis
DE3038249A1 (de) * 1980-10-10 1982-05-27 Bernhard E. Prof. Bürdek Behinderten-rollstuhl
DE3136099A1 (de) * 1981-09-11 1983-04-07 Ortopedia Gmbh, 2300 Kiel Rollstuhl

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1442805A (en) * 1973-05-22 1976-07-14 Hille Int Ltd Wheel chair chassis
DE3038249A1 (de) * 1980-10-10 1982-05-27 Bernhard E. Prof. Bürdek Behinderten-rollstuhl
DE3136099A1 (de) * 1981-09-11 1983-04-07 Ortopedia Gmbh, 2300 Kiel Rollstuhl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439206A1 (de) * 1990-01-10 1991-07-31 Skive Bomi Rollstuhl
WO2002056816A1 (en) * 2001-01-18 2002-07-25 Sunrise Medical Hhg Inc. Assistive opening and closing devices for wheelchairs

Also Published As

Publication number Publication date
FR2626171B1 (fr) 1990-06-29
FR2626171A1 (fr) 1989-07-28

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