EP0312969B1 - Verstellbares Rollstuhlgestell - Google Patents

Verstellbares Rollstuhlgestell Download PDF

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Publication number
EP0312969B1
EP0312969B1 EP88117276A EP88117276A EP0312969B1 EP 0312969 B1 EP0312969 B1 EP 0312969B1 EP 88117276 A EP88117276 A EP 88117276A EP 88117276 A EP88117276 A EP 88117276A EP 0312969 B1 EP0312969 B1 EP 0312969B1
Authority
EP
European Patent Office
Prior art keywords
section
wheelchair
backrest
fasteners
sideframe
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.)
Revoked
Application number
EP88117276A
Other languages
English (en)
French (fr)
Other versions
EP0312969A2 (de
EP0312969A3 (en
Inventor
Lawrence K. Mulholland
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.)
Mulholland Designs Inc
Original Assignee
Mulholland Designs Inc
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Filing date
Publication date
Family has litigation
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Application filed by Mulholland Designs Inc filed Critical Mulholland Designs Inc
Publication of EP0312969A2 publication Critical patent/EP0312969A2/de
Publication of EP0312969A3 publication Critical patent/EP0312969A3/en
Application granted granted Critical
Publication of EP0312969B1 publication Critical patent/EP0312969B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • A61G5/10—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
    • A61G5/08—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
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1062—Arrangements for adjusting the seat adjusting the width 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
    • A61G5/006—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs convertible to stretchers or beds
    • 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
    • A61G5/107—Arrangements for adjusting the seat positioning the whole seat forward or rearward

Definitions

  • U.S. Patents Nos. 3,815,586 and 4,073,537 describe universally adjustable body support pads. The pads are connected to a fixed non-adjustable wheelchair framework.
  • U.S. Patent No. 4,592,570 describes a seat frame which is adjustably attached to a fixed main frame. The frame itself cannot be altered.
  • U.S. Patent No. 4,595,212 sets forth a fixed side frame having means for adjustable connection with wheel assemblies. Again, adjustment of the sideframe is not possible.
  • U.S. Patent No. 4,082,348 describes an adjustable wheelchair.
  • the wheelchair includes a pair of sideframe assemblies which move relative to each other between a closed and an open position.
  • Upper and lower frame members are provided for selectively adjusting the distance between the members.
  • Cross brace assemblies are provided.
  • the various frame members are constructed from rigid thin-walled tubing interconnected with each other by conventional means such as welding or brazing. This patent does not permit angular adjustability between the frame member joints or the ability to move the joints themselves longitudinally along the frame member.
  • a wheelchair having a seat, backrest, wheels and opposing adjustable sideframes supporting the seat, backrest and wheels characterized by each sideframe comprising at least three discrete frame bar sections adjustably joined together in a selected angular and longitudinal orientation and a base section having an elongated part and a leg part connected to at least one of the frame bar sections.
  • a wheelchair having a framework comprising opposing sideframe structures which can be geometrically varied as desired.
  • the sideframes may be adjustably spaced-apart by a folding assembly.
  • the sideframes comprise individual frame sections having track means that is utilized in forming a wide variety of structural and supplemental connections.
  • Link and attachment means are used to adjustably interconnect the frame sections to create a stable lightweight framework.
  • Fig. 1 is a perspective view of a wheelchair constructed in accordance with the present invention with the seat, backrest and drive wheels shown in phantom.
  • Fig. 2 is a side elevational view of the wheelchair shown in Fig. 1.
  • Fig. 3 is a front elevational view taken along lines 3-3 of Fig. 2.
  • Fig. 4 is an enlarged fragmentary cross-sectional view taken along lines 4-4 of Fig. 2.
  • Fig. 5 is an enlarged fragmentary cross-sectional view taken along lines 5-5 of Fig. 2.
  • Fig. 6 is an enlarged fragmentary cross-sectional view taken along lines 6-6 of Fig. 2.
  • Fig. 7 is an enlarged fragmentary cross-sectional view taken along lines 7-7 of Fig. 2.
  • Fig. 8 is an enlarged fragmentary cross-sectional view taken along lines 8-8 of Fig. 2.
  • Fig. 9 is an enlarged fragmentary cross-sectional view taken along lines 9-9 of Fig. 2.
  • Fig. 10 is an enlarged fragmentary cross-sectional view taken along lines 10-10 of Fig. 2.
  • Fig. 11 is an enlarged fragmentary cross-sectional view taken along lines 11-11 of Fig. 2.
  • Fig. 12 is a side elevational view showing the sideframe of Fig. 1 without auxiliary attachments.
  • Fig. 13 is a side elevational view showing the sideframe of Fig. 12 in a different configuration and without the lower frame section.
  • Fig. 14 is a side elevational view showing the sideframe of Fig. 13 in an open configuration.
  • the basic wheelchair framework comprises two generally parallel spaced-apart sideframes 12,14 which are usually configured to be mirror-images of each other. Although the sideframes may be fixed in a spaced-apart relationship by conventional cross-pieces (not shown), they are preferably movable together by a folding assembly 16.
  • each sideframe comprises a base section 20 and at least three discrete frame bar sections shown as upright section 21, upper section 22 and front section 23.
  • the bar sections consist of linear structural elements preferably of lightweight extruded aluminum, aluminum alloy or composite plastic.
  • Each section includes a track means which, as shown, comprises an undercut slot 24 extending laterally along at least one, and preferably two opposing bar section sides.
  • the slots extend throughout the length of the inner face 38 and outer face 39 of each bar section.
  • Each slot has a cross-sectional shape corresponding to the outline of a slidable fastener 25 which is retained therein.
  • the slots have a T-shaped cross-section and the slidable fasteners comprise a conventional nut having a threaded accessible through said slot.
  • track means will be dictated by bar section connections and the requirements of supplemental engagement means. Further, it will be appreciated that track means may include slotted strips or sliding bolt means and the like, secured to one or more of the bar section faces.
  • Base section 20 comprises an elongated part 28 secured to a transversly extending leg part 29. Each part has an outer end that includes attachment for connection with a frame bar section.
  • the attachment means comprises an outer bar opening 30 at the outer end of elongated part 28 including upper opening 31 and lower opening 32 at the opposing ends of leg part 29.
  • An end of a frame bar section is inserted into a selected opening and adjusted longitudinally as desired.
  • End fasteners 33 extend transversly through the outer end walls and engage corresponding fasteners 25 in the bar section slots to secure the bar sections in place.
  • the base section comprises straight hollow structural parts having quadrilateral cross-sections corresponding to, and slightly larger than, the quadrilateral cross-sectional shape of the frame bar sections.
  • the bar sections can telescope into the base section openings and be readily adjusted longitudinally.
  • leg part 29 extend about perpendicularly across the back end of the elongated part. In this manner, a fixed angular corner A will be formed to provide a strong foundation for the overall sideframe structure.
  • upright section 21 extends upwardly from opening 31 and a lower bar section 26 extends downwardly from the lower bar opening 32.
  • the longitudinal axis of both sections and the leg part are coextensive forming a straight backside to the sideframe.
  • the upright and lower sections have identical cross-sectional shapes and, in fact, the lower section 26 may simply be a continuation of upright section 21 that extends through leg part 29.
  • use of the lower section is optional and it functions primarily to secure the lower end of a brace means in a manner to be hereinafter described.
  • bottom frame bar section 27 serves as a linearly adjustable extension of elongated part 28. Its' construction is the same as the lower and front bar sections. It includes slots 24 and slidable fasteners 25 which serve to adjustably secure it to opening 30 with end fasteners 33.
  • the outer end of the bottom section is joined to front section 23 by a link means 35.
  • link means 35 Although various types of H brackets, yoke bars, clamps and braces could be used for the link means, the preferred means is shown as connector elements 36 with link fasteners 37.
  • the connector elements are flat generally rectangular plates having spaced-apart orifices through which the link fasteners extend.
  • the link fasteners preferably comprise bolts which are threaded to engage the female threads of the slidable fasteners.
  • link fasteners could be used as dictated by the particular link means and track means being utilized such that the invention should not be limited by any specific fastening system.
  • the link fastener orifices are arranged to include at least two at a securement end portion of each connector element and one at an opposing pivot end portion thereof.
  • link fasteners extending through the securement end orifices into engagement with the respective slidable fasteners will serve mainly to firmly fix the element to the end of a bar section.
  • the link fastener extending through the pivot end orifice into engagement with a slidable fastener on the adjacent connecting bar section will function as a pivot until tightened.
  • an angularly adjustable joint is formed between the connecting bar sections.
  • the joint will be longitudinally adjustable as a result of the slidable fastener on the adjacent bar section.
  • the connector elements can be reversed for allowing either bar section to be pivotable.
  • a connector element is secured to the bottom section outer end with two securement end link fasteners 37.
  • a pivot end fastener 37' extends through the pivot end orifice and engages a slide fastener from front section 23.
  • the angle B between the bottom and front sections can be varied as desired.
  • the front section can be moved longitudinally relative to the bottom section outer end.
  • the link means may be used, as shown, on both the inner and outer bar section faces.
  • angular and longitudinal adjustable link fastener joints can be formed with upper section 22 at the upper ends of front section 23 and upright section 21. As shown, the securement portion of each connector element is secured to the bar section upper ends.
  • the pivot link fasteners 37' engage respective slidable fasteners at opposing ends of the upper bar section.
  • Angle C between the front and upper bar sections and angle D between the upright and upper bar sections can be varied in the same manner as angle B. All three angles will also vary in accordance with the desired spacing between joints on the upper section and front section and, per the amount the bottom section and upright sections extend from the base section parts.
  • FIG. 13 In the Fig. 13 embodiment, lower section 26 and bottom section 27 are omitted.
  • the front section 23 is rotated inwardly forming an acute angle C and is attached to the elongated part 28. As shown, the securement portion of the connector elements are fixed to the outer end of part 28 and to the upper end of front section 23. This permits securement anywhere along the longitudinal extent of the front section.
  • the sideframe configuration of Fig. 13 may be appropriate where leg support is not required or where obstructions at the wheelchair front must be minimized for desk or counter work.
  • Fig. 14 illustrates the basic sideframe construction of Fig. 13 in an open configuration.
  • the front section inclines outwardly from its' upper end forming an obtuse angle C without connection to elongated part 28.
  • This embodiment provides an ultra lightweight structure suitable for use by children or in sport applications.
  • upper bar sections 22 have a greater cross-sectional area than the front, bottom, upright and lower bar sections which, otherwise preferably have identical cross-sections.
  • the increased area allows for the addition of a set keyway 34 on inner faces 38.
  • the seat keyway extends throughout the length of the upper bar section and includes an enlarged inner area 84. The enlarged area provides a means for retaining the expanded side edges 87 of seat 85.
  • seat 85 preferably comprises a durable pliable material that spans the area between opposing upper bar sections.
  • a seat engagement means is provided whereby the material is folded 180° to form the opposing edges 87,87 and, retainer rods 86 are inserted between the folds to expand the edges. The edges are then guided simultaneously into respective open ends of the seat keyways on each upper bar section. Free ends of the edge folds (not shown) may be secured by hemming or be drawn together by lacing or the like.
  • the seat material is pliable, such as with canvas, leather or reinforced Nylon fabric, it will flex and crease along its' midportion when the sideframes are drawn together into a wheelchair closed position. It will be appreciated, however, that if the wheelchair is non-collapsing, a rigid seat with engagement edges could be used in place of the pliable seat material.
  • the brace means may comprise an elongated member that connects upper section 22 with base section 20 or lower section 26. Most basically, it may simply consist of a shaft conventionally secured to the aforesaid sections. However, it is preferable that the brace means include means to accomodate the variable geometry of the sideframe. To this end, universal joint means are used to connect the brace to the frame sections at varying angular adjustments. Longitudinal adjustment means may also be used to vary the brace length and facilitate attachment along the length of a frame bar section.
  • the brace means includes an elongated hollow brace member 41 having opposing upper and lower open ends.
  • the lower end is provided with a stationary plug 42 which is secured therein by pin 43.
  • a lower universal joint assembly 44 Attached to the outer end of the plug is a lower universal joint assembly 44.
  • This includes a ball fastener 45 having a ball end and a shaft end which is threadably engaged to the plug end.
  • annular joint fastener 46 Surrounding the ball end and forming a universal joint therewith is annular joint fastener 46.
  • the joint fastener includes a threaded portion that extends through base section orifices and engages corresponding threads in a lower bar section slidable fastener.
  • a set nut and washer assembly 47 inhibits loosening of the fasteners.
  • brace member 41 contains longitudinal adjustment means which, as shown, comprises sliding shaft 50.
  • the shaft includes orifices 51 that are axially spaced-apart and correspond to brace member orifices 52.
  • a releasable pin 53 engages selected aligned orifices of the shaft and brace member in accordance with the desired axial extent of the plug (and overall brace length).
  • an upper universal joint assembly 54 is attached to the end of sliding shaft 50.
  • the upper assembly includes a ball fastener 45 secured to the end of shaft 50.
  • a joint fastener 46 forms a universal joint with the ball fastener.
  • the threaded end of the joint fastener is secured to a joint block 56.
  • the block facilitates a strong connection with upper section 22 and includes upper fasteners 57.
  • the upper fasteners engage upper section slidable fasteners to secure the upper end of the brace means to the desired position along the upper section slot 24.
  • the sideframe height or width may be increased which, in turn, alters the variable corner angles B, C and D.
  • simple adjustment of the brace means length will be all that is needed for disposing the brace means in the most suitable alignment. This is because the universal joint connections permit automatic angular movement at the point of connection. Consequently, the sideframe of the invention is provided with an effective strengthening means which does not at all detract from the sideframe's ability to change configuration.
  • the folding assembly 16 of the invention is most conveniently attached to opposing sideframes via the above-described brace means. This eliminates additional multiple connections to the appropriate frame sections, saves cost, minimizes weight and prevents interference with sideframe adjustability.
  • the assembly includes at least one pair of hinged spacer bars having lateral adjustment means for varying the distance between sideframes.
  • an illustrative folding assembly comprising a pair of upper spacer bars 60,61 and lower spacer bars 62,63. Each pair includes overlapping inner end portions having aligned openings through which a pivot shaft 64 extends. The shaft is secured by nut 65. The outer ends of each bar are secured to respective opposing brace members 41. The bar connections to each brace member preferably occur adjacent to the ends of the member. In this way, greater leverage occurs to pivot the assembly and move the sideframes in and out. Also, as a result of the bars being connected at spaced-apart locations on the brace member, a stronger more stable alignment occurs between the opposing sideframes.
  • the pivot shaft openings 66 are located at the inner end of outer bars 60,62 and at a location inwardly offset from the end of inner bars 61,63.
  • the arms swing beneath overlapping inner end portions of outer bars 60,62 when the bars are in straight alignment corresponding to a wheelchair open position.
  • the locking arms are provided with a lock pin 67 which is biased outwardly by spring 71 into corresponding lock openings 72 on the inner faces of outer bars 60,62.
  • Lock ring 70 is pulled to withdraw the lock pin and permit the bars to pivot toward each other. This action results in the sideframes being drawn toward each other and disposes the wheelchair in a closed inoperative position.
  • the folding assembly lateral adjustment means comprises corresponding openings 66 which are spaced-apart at predetermined locations along the length of each bar.
  • the desired spacing between sideframes can thereby be varied by inserting pivot shaft 64 through openings aligned in correspondence to the desired spacing. In such case, the amount of bar overlap will vary accordingly. Therefore, equally spaced-apart lock openings will be required to allow entry of the lock pin to secure the bars in straight alignment.
  • the folding assembly can include strut means to interconnect a spacer bar to an opposing sideframe.
  • crossing strut members 75,76 are shown connecting upper spacer bars with respective sideframe base sections.
  • Ball joint means are used for end connections to allow unrestricted angular movement of the strut members with the spacer bars.
  • the upper end of strut member 75 is connected to upper spacer bar 61 by upper ball joint means 77.
  • the ball joint means includes a round head and ball fastener 78 that threadably engages strut opening 79 of the spacer bar.
  • Ball ring 80 conformally engages the round head and includes a ring fastener 81 that extends axially by threaded engagement into the outer end of the strut member.
  • strut member 75 The lower end of strut member 75 is shown as connected with the outer end of elongated part 28 on the sideframe which is opposite of spacer bar 61. If desired, the lower connection could be to the adjacent bottom section 27. In the lower connection, the ball joint means is the same as in the upper connection. However, ball fastener 78 engages a strut block 82. The strut block, in turn, includes strut fasteners 83 which engage the slidable fasteners contained in bottom section 27.
  • the strut block provides a stronger connection and allows movement of the lower connection onto and along the bottom frame section.
  • the upper spacer bars include additional strut openings 79 and, the strut member length can be varied by rotation of the threaded ring fasteners. It will be further appreciated that all of the above discussion applies equally to strut member 76. The only exception is that the upper end of strut member 76 is attached to spacer bar 60 and the lower end is connected to part 28 on the sideframe opposite spacer bar 60.
  • the wheelchair backrest means includes a pair of upstanding backrest frame bars 90,91 each joined to a respective upper bar section 22 by backrest link means.
  • the cross-sectional shape of the backrest frame bars and upper bar sections are substantially identical. Therefore, the backrest link means can include connector elements 36 with link fasteners 37 and pivot end fasteners 37'.
  • connector elements 36 are positioned at opposing sides of the lower end of each backrest frame bar.
  • Link fasteners 37 engage corresponding slidable fasteners contained within slots 24 in the same manner as with the sideframe bar sections.
  • the pivot portion of each connector element extends beyond the end of the backrest bar and overlies respective inner and outer faces of the upper bar section. Pivot link fasteners are then used to engage corresponding slidable fasteners in the upper bar section slots.
  • the backrest link means may include an angle bar 93.
  • the upper end of each angle bar is positioned to overlie the upper end of an outer face connector element. It is then secured, along with the connector element by a link fastener common to both.
  • the angle bar lower end includes a pivot fastener 37' that engages a corresponding slidable fastener in the upper bar section slot.
  • a pair of hinged support arms 95,96 are used to interconnect with opposing upper portions of the backrest bars.
  • the arms are hinged at inner ends by support pin 97.
  • the arms include a lock means to releasably maintain an open colinear position.
  • the lock means comprises hook 98 at an extended portion of arm 95 that engages a hook pin 99 projecting from arm 96 when the arms are in longitudinal alignment.
  • each support arm is hinged to a respective arm block 101,102.
  • Each block is provided with arm fasteners 103 that engage slidable fasteners in the backrest bars. This connection allows adjustment and movement of the support arms up and down the backrest bars.
  • the backrest bars include backrest keyways 104.
  • a back support structure 105 shown in phantom in Figs. 1 and 3, includes enlarged opposing side edges which slide into the keyways at the open end of each backrest bar.
  • the back support structure can be rigid as with a non-collapsing wheelchair, or it can be flexible such as with the seat material.
  • Conventional wheelchair drive wheels 107 (depicted in phantom in Figs. 1 and 3) are secured to the elongated part 28 of respective opposing base sections.
  • the extended axle 109 of each drive wheel extends through an opening 110 in axle plate 111 and is fixed thereto by axle nut 112.
  • Plate fasteners 113 that extend through clamp plate 114 and threadably engage the axle plate, draw the plates against opposing sides of the elongated part. This clamping action secures the wheels in place. It also permits adjustment of wheel location anywhere along the length of the elongated part.
  • adjunct wheelchair assemblies such as footrests, casters, armrests, handles and body support pads
  • supplemental connector means in conjunction with the slidable fasteners of the novel frame bar sections.
  • caster assemblies 114 which are secured to the forward portion of bottom bar section 27 by a caster block means.
  • Such means provides a supplemental connector junction whereby a caster assembly is connected to castor block 115.
  • the block in turn, includes block fasteners 116 which engage slidable fasteners in the bottom bar section. The combined assembly can be moved, as desired, anywhere along lateral slot 24.
  • handles 118 are joined to the upper portion of respective backrest bars by supplemental means comprising a handle connector block 119.
  • the block is split to frictionally engage the tubular handle base. Threaded handle fasteners 120 tighten the block to the handle. The fasteners also engage corresponding slidable fasteners in the backrest bars.
  • supplemental connector means shown as footrest block 122 with fasteners 123, interconnect footrest plates 124 to slidable fasteners in front bar section 23.
  • a toggle brake assembly 126 includes brake fasteners 127 which pivotally connect brake arms directly to the upper bar section via engagement with corresponding slidable fasteners.
  • armrests 130 are joined by a supplemental armrest mounting means to respective backrest bars 90,91.
  • the mounting means includes a split block 131 securing a transverse shaft 132.
  • the shaft rotatably supports the handle by engagement with housing 133 at the handle base.
  • Peg 134 extends from the shaft into the slot and impinges the slot end to limit, in a predetermined manner, up and down rotation of the handle.
  • the split block 131 includes armrest fasteners 135 which engage corresponding slidable fasteners in the backrest bars.

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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)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Prostheses (AREA)

Claims (14)

  1. Rollstuhl mit einem Sitz (85), einer Rückenlehne (105), Rädern (107) und einander gegenüberliegenden verstellbaren seitlichen Rahmenteilen (14), die den Sitz tragen, wobei der Sitz, die Rückenlehne und die Räder dadurch gekennzeichnet sind, daß jedes seitliche Rahmenteil wenigstens drei getrennte Rahmenstangenabschnitte (21, 22, 23) umfaßt, die verstellbar miteinander verbunden sind in einer ausgewählten Winkel- und Längsausrichtung, und einen Basisabschnitt (20) mit einem länglichen Teil (28) und einem Schenkelteil (29), die mit wenigstens einem der Rahmenstangenabschnitte verbunden sind.
  2. Rollstuhl nach Anspruch 1, dadurch gekennzeichnet, daß die Rahmenstangenabschnitte (21, 22, 23) Spureinrichtungen (24) mit verschiebbaren Schraubenbolzen (25) umfassen; und eine Verbindungseinrichtung (35), welche die mit Verbindungsgliedern (37) versehenen Rahmenstangenabschnitte miteinander verbindet, die in die verschiebbaren Schraubenbolzen eingreifen.
  3. Rollstuhl nach Anspruch 1 oder 2, gekennzeichnet durch eine Befestigungseinrichtung (30), welche einen Rahmenstangenabschnitt mit einem entsprechenden Basisabschnitt verbindet.
  4. Rollstuhl nach Anspruch 2, dadurch gekennzeichnet, daß die Rahmenstangenabschnitte eine vierseitige Querschnittsform besitzen, und die Spureinrichtungen (24) sich in Längsrichtung entlang gegenüberliegender Seiten des Rahmenstangenabschnittes erstrecken.
  5. Rollstuhl nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Rahmenstangenabschnitte einen aufrechten Abschnitt (21), einen oberen Abschnitt (22), einen vorderen Abschnitt (23) und einen unteren Abschnitt (27) umfassen; wobei sich der aufrechte Abschnitt (21) von dem Schenkelteil (29) nach oben zu dem oberen Abschnitt (22) erstreckt, der obere Abschnitt (22) erstreckt sich von dem aufrechten Abschnitt zu dem vorderen Abschnitt (23), der vordere Abschnitt erstreckt sich von dem oberen Abschnitt zu dem unteren Abschnitt, und der untere Abschnitt (27) erstreckt sich von dem vorderen Abschnitt (23) zu dem länglichen Teil (28).
  6. Rollstuhl nach Anspruch 5, dadurch gekennzeichnet, daß die Rahmenstangenabschnitte einen unteren Abschnitt (26) umfassen, der sich von dem Schenkelteil (29) nach unten erstreckt, und eine Verstrebung (41), die den oberen Abschnitt (22) mit dem unteren Abschnitt (26) verbindet.
  7. Rollstuhl nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die gegenüberliegenden seitlichen Rahmenteile (14) durch eine Klappanordnung (16) miteinander verbunden sind.
  8. Rollstuhl nach Anspruch 7, dadurch gekennzeichnet, daß die Klappanordnung (16) Seitenverstelleinrichtungen (60, 61, 62, 63, 64, 65, 66) umfaßt, die den Abstand zwischen gegenüberliegenden seitlichen Rahmenteilen verändern.
  9. Rollstuhl nach Anspruch 7, dadurch gekennzeichnet, daß die Verstrebung (41) wenigstens zwei der Rahmenstangenabschnitte auf einem seitlichen Rahmenteil miteinander verbindet.
  10. Rollstuhl nach Anspruch 9, dadurch gekennzeichnet, daß die Klappanordnung (16) drehbar gelagerte Abstandsstangen (60, 61, 62, 63) umfaßt, deren entgegengesetzte äußere Enden an einer entsprechenden Verstrebung (41) befestigt sind.
  11. Rollstuhl nach Anspruch 10, dadurch gekennzeichnet, daß die Klappanordnung (16) Verstrebungen (75, 76) umfaßt, die ein seitliches Rahmenteil (14) mit einer Abstandsstange (60, 61, 62, 63) verbinden.
  12. Rollstuhl nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß der obere Abschnitt (22) mit einer Keilnut (34) für den Sitz versehen ist, und der Sitz (85) Sitzbefestigungseinrichtungen (86, 87) an den gegenüberliegenden Kanten aufweist, die in der Keilnut gehalten werden.
  13. Rollstuhl nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß die Rückenlehne (105) ein Paar Rückenlehnenrahmenstangen (90, 91) aufweist, die jeweils eine Rückenlehnenkeilnut (104) aufweisen, und die jeweils mit einem entsprechenden oberen seitlichen Rahmenabschnitt (22) verbunden sind, und eine Rückenstützvorrichtung (95, 96), die Rückenlehnenbefestigungseinrichtungen an den gegenüberliegenden Kanten aufweist, die in der Rückenlehnenkeilnut gehalten werden.
  14. Rollstuhl nach Anspruch 13, dadurch gekennzeichnet, daß die Rückenlehnenrahmenstangen (90, 91) seitliche Schlitze aufweisen, die verschiebbare Stangenschraubenbolzen aufweisen, und jede der Rückenlehnenrahmenstangen ist mit einem entsprechenden oberen seitlichen Rahmenabschnitt über eine Rückenlehnenverbindungseinrichtung verbunden, die Verbindungsglieder (103) umfaßt, die in die verschiebbaren Stangenschraubenbolzen eingreifen.
EP88117276A 1987-10-19 1988-10-17 Verstellbares Rollstuhlgestell Revoked EP0312969B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10977787A 1987-10-19 1987-10-19
US109777 1987-10-19

Publications (3)

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EP0312969A2 EP0312969A2 (de) 1989-04-26
EP0312969A3 EP0312969A3 (en) 1989-10-25
EP0312969B1 true EP0312969B1 (de) 1993-03-31

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EP88117276A Revoked EP0312969B1 (de) 1987-10-19 1988-10-17 Verstellbares Rollstuhlgestell

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EP (1) EP0312969B1 (de)
JP (1) JPH01207062A (de)
CA (1) CA1293437C (de)
DE (1) DE3879864T2 (de)

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US6176335B1 (en) 1996-07-03 2001-01-23 Pride Mobility Products, Corporation Power wheelchair
US8910975B2 (en) 2007-02-14 2014-12-16 Invacare Corporation Wheelchair with suspension
US8925943B2 (en) 2001-10-10 2015-01-06 Invacare Corp. Wheelchair suspension
US9010470B2 (en) 2009-10-09 2015-04-21 Invacare Corporation Wheelchair suspension
US9149398B2 (en) 2000-10-27 2015-10-06 Invacare Corporation Obstacle traversing wheelchair
US9308143B2 (en) 2012-02-15 2016-04-12 Invacare Corporation Wheelchair suspension
US9364377B2 (en) 2002-10-25 2016-06-14 Invacare Corporation Suspension for wheeled vehicles

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FR2661088B1 (fr) * 1990-04-24 1996-03-29 Inst Nat Sante Rech Med Perfectionnements aux fauteuils roulants pour handicapes.
US5076602A (en) * 1990-04-27 1991-12-31 Medical Composite Technology Seating system for a wheel chair
US5176393A (en) * 1990-04-27 1993-01-05 Medical Composite Technology Modular wheelchair
US5320373A (en) * 1990-05-24 1994-06-14 Medical Composite Technology Molded-composite chassis for a wheelchair
DE9113085U1 (de) * 1991-10-21 1991-12-12 MEYRA Wilhelm Meyer GmbH & Co KG, 4925 Kalletal Rollstuhl
DE4136457A1 (de) * 1991-10-21 1993-04-22 Meyra Wilhelm Meyer Gmbh & Co Rollstuhl
US5267745A (en) * 1991-11-08 1993-12-07 Medical Composite Technology, Inc. Wheelchair and wheelchair frame
US5575348A (en) * 1994-04-15 1996-11-19 Invacare Corporation Powered wheelchair with adjustable center of gravity and independent suspension
DE4418674C1 (de) * 1994-05-28 1996-02-01 Markwald Ute Trapezförmiger geschlossener Tragrahmen, insbesondere für Rehabilitationshilfsmittel
EP0702945A1 (de) * 1994-09-13 1996-03-27 Ortopedia Gmbh Rollstuhl mit verstellbarem Rahmen
US5590893A (en) * 1994-12-28 1997-01-07 No Limit Designs, Inc. Wheelchair frame assembly
CH690750A5 (de) * 1995-07-21 2001-01-15 Kueschall Design Ag Klapprollstuhl.
GB9618840D0 (en) * 1996-09-10 1996-10-23 Ross & Bonnyman Eng Ltd A wheelchair
DE29724074U1 (de) * 1997-06-20 1999-11-25 Invacare (Deutschland) GmbH, 32549 Bad Oeynhausen Rollstuhl
US6154690A (en) * 1999-10-08 2000-11-28 Coleman; Raquel Multi-feature automated wheelchair
US11213441B2 (en) 2002-10-25 2022-01-04 Invacare Corporation Suspension for wheeled vehicles
EP2111203B1 (de) 2007-02-08 2011-01-05 Invacare Corporation Rollstuhlaufhängung
JP5022087B2 (ja) * 2007-04-10 2012-09-12 株式会社松永製作所 車椅子、台車に着設する子供用座部構造体
JP2016529074A (ja) * 2013-09-06 2016-09-23 アル リハブ アーエス 折り畳み車いす用の折り畳み機構、車いす用の背もたれ支柱、および車いす
US11903887B2 (en) 2020-02-25 2024-02-20 Invacare Corporation Wheelchair and suspension systems

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Publication number Priority date Publication date Assignee Title
US6176335B1 (en) 1996-07-03 2001-01-23 Pride Mobility Products, Corporation Power wheelchair
US9149398B2 (en) 2000-10-27 2015-10-06 Invacare Corporation Obstacle traversing wheelchair
US8925943B2 (en) 2001-10-10 2015-01-06 Invacare Corp. Wheelchair suspension
US9370455B2 (en) 2001-10-10 2016-06-21 Invacare Corporation Wheelchair suspension
US9364377B2 (en) 2002-10-25 2016-06-14 Invacare Corporation Suspension for wheeled vehicles
US8910975B2 (en) 2007-02-14 2014-12-16 Invacare Corporation Wheelchair with suspension
US9346335B2 (en) 2007-02-14 2016-05-24 Invacare Corporation Stability control system
US11850906B2 (en) 2007-02-14 2023-12-26 Invacare Corporation Stability control system
US9010470B2 (en) 2009-10-09 2015-04-21 Invacare Corporation Wheelchair suspension
US9913768B2 (en) 2009-10-09 2018-03-13 Invacare Corporation Wheelchair suspension
US9308143B2 (en) 2012-02-15 2016-04-12 Invacare Corporation Wheelchair suspension

Also Published As

Publication number Publication date
CA1293437C (en) 1991-12-24
EP0312969A2 (de) 1989-04-26
DE3879864T2 (de) 1993-08-26
JPH01207062A (ja) 1989-08-21
EP0312969A3 (en) 1989-10-25
DE3879864D1 (de) 1993-05-06

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