[go: up one dir, main page]

EP0904760B1 - Cross-strut for foldable wheelchair - Google Patents

Cross-strut for foldable wheelchair Download PDF

Info

Publication number
EP0904760B1
EP0904760B1 EP98115226A EP98115226A EP0904760B1 EP 0904760 B1 EP0904760 B1 EP 0904760B1 EP 98115226 A EP98115226 A EP 98115226A EP 98115226 A EP98115226 A EP 98115226A EP 0904760 B1 EP0904760 B1 EP 0904760B1
Authority
EP
European Patent Office
Prior art keywords
strut
cross
seat
section
arrangement according
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.)
Expired - Lifetime
Application number
EP98115226A
Other languages
German (de)
French (fr)
Other versions
EP0904760A1 (en
Inventor
Gregor Horacek
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.)
Otto Bock Healthcare GmbH
Original Assignee
Otto Bock Healthcare GmbH
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 Otto Bock Healthcare GmbH filed Critical Otto Bock Healthcare GmbH
Publication of EP0904760A1 publication Critical patent/EP0904760A1/en
Application granted granted Critical
Publication of EP0904760B1 publication Critical patent/EP0904760B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/04—Wheelchair

Definitions

  • the invention relates to a cross strut for a folding wheelchair, with at least two crosswise with each other via a cross strut joint connected struts used to adjust the seat width are each made variable in length by telescoping and at their upper end one in each case transversely to the strut in the longitudinal direction of the folding wheelchair serves to determine the seat and to enlarge the Seat depth is changeable.
  • the invention is based on the object described above To constructively improve cross braces.
  • Seat profile is formed in two parts, the front seat profile section preferably telescoped continuously in the main seat tube.
  • the two-part seat covering enables problem-free length adjustment.
  • the seat depth setting remains the same rear seat cover stationary, while the front seat cover moved together with the front seat profile sections becomes.
  • Figure 1 shows a cross strut for a not shown Folding wheelchair.
  • This cross strut is shown in front view is therefore transverse to the longitudinal axis of the folding wheelchair and consists essentially of two crosswise over a cross strut joint 1 interconnected struts 2.
  • Each strut 2 is composed of an upper, tubular trained strut section 2a and also as a tube trained lower strut section 2b, the telescopic in upper strut section 2a is guided gradually displaceable.
  • Each strut section 2a, 2b has a row of holes 3, 4 which correspond with each other.
  • the cross brace joint 1 Screw or the like Is through a hole 3a of the row of holes 3 of the upper strut section 2a and by three with this Hole 3a aligned holes 4a of the row of holes 4 of the associated lower strut section 2b and 3a, 4a of the second strut 2 inserted.
  • the rows of holes 3, 4 are arranged so that the cross strut joint 1 always in the center of the cross point can be placed, i.e. in the vertical longitudinal median plane M at height h compared to the lower pivot points 5 of the two Struts 2. This ensures that the side frames the folding wheelchair, even when adjusting the seat width stand parallel to each other.
  • the upper strut section 2a there is a cross strut tab 6 articulated via a connection 7 through a multiple hole 8 of the cross strut plate 6 and a bore 9a the row of holes 9 forming the bearing on the upper strut section 2a is performed.
  • the holes 9a are not through the top Bracket section 2a passed through for maximum insertion of the lower strut section into the upper strut section.
  • the upper strut section welded a U-profile with its U-legs.
  • the holes 9a of the row of holes are in the U-leg 9 provided while in the between U-profile and strut section formed channel is inserted a flat steel, the one of the hole ranges 9 corresponding row of threaded holes having.
  • Figure 1 shows the cross strut in a setting for minimal Seat width.
  • the two struts 2 are shortened to a minimum length; the cross strut joint 1 is through the top hole 3a of the upper strut section 2a and thus through the lowest hole 4a of the associated lower strut section 2b; the Connection 7 is through the top holes of the multiple hole 8 of the cross strut plate 6 and the row of holes 9 of the upper one Buttress section 2a performed.
  • the seat width is determined by the distance a between the two upper ends of the struts 2, each by a transverse to the strut 2 in the longitudinal direction of the folding wheelchair lying seat profile 10 is defined. In one practical embodiment is the minimum seat width e.g. 23 cm and the maximum seat width shown in Figure 5 e.g. 33.5 cm.
  • Cross strut In the setting defining the maximum seat width Cross strut according to FIG. 5 is the height h of the cross strut joint 1 remained unchanged from that of FIG. 1; the Cross strut joint 1 is still on the vertical Longitudinal center plane M. Deviating from FIG. 1, however, these are Cross strut joint 1 and the connections 7 each in the Lower position of the assigned rows of holes 3, 4, 8, 9 provided. Since each of these rows of holes has multiple holes Intermediate positions possible.
  • Figures 1 and 5 show that the lower end of each upper strut section 2a and the arranged area of the lower Strut section 2b by a telescopic clamp 11 at the same time are gripped and clamped without play.
  • Figure 4 shows in conjunction with Figure 4 that the lower end of the lower Buttress section 2b by a slid-on, with the lower Bracket section 2a to be screwed lower extension 12 is formed is T-shaped.
  • a pipe plug 19 is placed, the dimensioned in the diameter of the outer section is that a low-clearance guide of the upper end of the lower Strut section 2b guaranteed in the upper strut section 2a is.
  • the seat profile 10 is formed in two parts, the front Seat profile section 10a continuously telescoped in the main seat tube 10b. On the two front seat profile sections 10a a movable front seat cover 13 together with these attached, partially from a stationary rear, to the two main seat tubes 10b attached seat cover 14 overlapped is.
  • each tensioning strip 15 provided, each above that assigned to them Seat profile 10 and the front seat cover 13th on the front seat profile sections 10a and on the two Press head tube 10b.
  • the attachment of each tensioning bar 15 takes place via two screw connections 16, 17, the rear in an elongated hole 18 in the top of the main seat tube 10b is and thus enables stepless telescoping and at the same time forms a protection against moving out.
  • the front seat cover is the same as the rear seat cover adjustable in width (e.g. by means of a not shown Velcro straps, buckles or the like) and are so on the desired frame width set with the cross strut adaptable. Due to the two-part design of the seat covering their length adjustment is also possible without any problems.
  • the front seat cover 13 is placed around the tensioning strips 15, while the rear seat cover 14 around the main seat tubes 10b is performed. With the seat depth adjustment, the rear seat cover 14 stationary, while the front seat cover 13 together with the front seat profile sections 10a is moved.

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)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Tents Or Canopies (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Description

Die Erfindung betrifft eine Kreuzstrebe für einen Faltrollstuhl, mit zumindest zwei kreuzweise über ein Kreuzstrebengelenk miteinander verbundenen Streben, die zur Verstellung der Sitzbreite jeweils durch Teleskopierung längenveränderlich ausgebildet sind und an ihrem oberen Ende jeweils ein quer zur Strebe in Längsrichtung des Faltrollstuhles liegendes Sitzprofil tragen, das zur Festlegung der Sitzfläche dient und zur Vergrößerung der Sitztiefe veränderbar ist.The invention relates to a cross strut for a folding wheelchair, with at least two crosswise with each other via a cross strut joint connected struts used to adjust the seat width are each made variable in length by telescoping and at their upper end one in each case transversely to the strut in the longitudinal direction of the folding wheelchair serves to determine the seat and to enlarge the Seat depth is changeable.

Eine derartige Ausführungsform läßt sich der US-PS 4,989,890 entnehmen. Bei dieser Ausführungsform wird die zur Veränderung der Sitzbreite, also zur Verbreiterung des Rollstuhlrahmens notwendige Längenveränderung der beiden Streben durch eine beidseitige Teleskopierung beider Streben erreicht. Hierdurch ergibt sich eine konstruktiv bedingte Beschränkung der maximalen Längenverstellung. Durch die Vielzahl der Bauteile wird die Konstruktion etwas instabil und in der Herstellung aufgrund der großen Anzahl von Bauelementen und Montageverbindungen verhältnismäßig teuer. Such an embodiment can be found in US Pat. No. 4,989,890 remove. In this embodiment, the change the seat width, i.e. necessary to widen the wheelchair frame Length change of the two struts by a bilateral Telescoping of both struts achieved. This gives there is a design-related limitation of the maximum length adjustment. Due to the large number of components, the construction somewhat unstable and in production due to the large number of components and assembly connections relatively expensive.

Zur Verlängerung der Sitztiefe ist bei dieser vorbekannten Konstruktion für jedes Sitzprofil ein vorderes Ansatzstück vorgesehen, das im Bedarfsfall auf das rohrförmige Sitzprofil aufgesteckt werden kann. Diese Lösung erscheint nachteilig, da bei einer gewünschten Verlängerung der Sitztiefe nicht nur diese Ansatzstücke sondern vor allem auch eine längere Sitzbespannung beschafft werden müssen, die überdies neu zu montieren sind.To extend the seat depth is with this known construction a front extension piece is provided for each seat profile, which is attached to the tubular seat profile if necessary can be. This solution appears disadvantageous because a desired extension of the seat depth not only this Attachments but above all a longer seat covering must be procured, which must also be reassembled.

Eine weitere Kreuzstrebe, bei welcher für beide Streben jeweils nur eine einseitige Teleskopierung vorgesehen ist, offenbart die US-A-2 669 289.A further cross strut, in which only one-sided telescoping is provided for each strut, is disclosed in US Pat. No. 2,669,289.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs beschriebenen Kreuzstreben konstruktiv zu verbessern.The invention is based on the object described above To constructively improve cross braces.

Diese Aufgabe wird erfindungsgemäß durch eine Kreuzstrebe gemäß Anspruch 1 gelöst.This object is achieved by a cross strut according to claim 1.

Erfindungsgemäß ist somit für die beiden Streben auch nur eine einseitige Teleskopierung vorgesehen. Hierdurch werden die maximal mögliche Längenverstellung der Streben vergrößert, die Anzahl der erforderlichen Bauteile jedoch verringert. Es ergibt sich eine stabilere, einfacher zu montierende und kostengünstiger herzustellende Konstruktion. Dabei können der obere und der untere Strebabschnitt jeweils durch ein einteiliges T-Stück gebildet sein.According to the invention, there is therefore only one-sided for the two struts Telescope provided. This will make the maximum possible length adjustment of the struts increased, the number the required components, however, reduced. It follows a more stable, easier to assemble and less expensive construction to be manufactured. The upper and the lower can Buttress section each formed by a one-piece T-piece his.

Da Kinder und Jugendliche wachsen, ist es aus wirtschaftlichen Gründen wünschenswert, daß auch deren Faltrollstuhl "mitwachsen" kann und zwar nicht nur hinsichtlich der Sitzbreite sondern auch der Sitztiefe. Erfindungsgemäß ist daher vorgesehen, daß das Sitzprofil zweiteilig ausgebildet ist, wobei der vordere Sitzprofilabschnitt vorzugsweise stufenlos im Hauptsitzrohr teleskopiert.As children and adolescents grow, it's economic Reasons desirable that their folding wheelchair also "grows with them" can not only in terms of seat width but also the seat depth. According to the invention it is therefore provided that Seat profile is formed in two parts, the front seat profile section preferably telescoped continuously in the main seat tube.

Dabei ist es vorteilhaft, wenn auf den beiden vorderen Sitzprofilabschnitten eine mit diesen verschiebbare vordere Sitzbespannung befestigt ist, die teilweise von einer stationären hinteren, auf den beiden Hauptsitzrohren befestigten Sitzbespannung übergriffen ist.It is advantageous if on the two front seat profile sections one with these sliding front seat covers attached, partially from a stationary rear, seat covers attached to the two main seat tubes is spread.

Die zweiteilige Sitzbespannung ermöglicht eine problemlose Längenverstellung. Bei der Sitztiefeneinstellung bleibt dabei die hintere Sitzbespannung stationär, während die vordere Sitzbespannung zusammen mit den vorderen Sitzprofilabschnitten verschoben wird.The two-part seat covering enables problem-free length adjustment. The seat depth setting remains the same rear seat cover stationary, while the front seat cover moved together with the front seat profile sections becomes.

Weitere Merkmale der Erfindung sind Gegenstand der Unteransprüche und werden mit weiteren Vorteilen der Erfindung anhand eines Ausführungsbeispieles näher erläutert.Further features of the invention are the subject of the dependent claims and are with further advantages of the invention based on a Embodiment explained in more detail.

In der Zeichnung ist eine als Beispiel dienende Ausführungsform der Erfindung dargestellt. Es zeigen:

Figur 1
In Vorderansicht eine auf minimale Sitzbreite eingestellte Kreuzstrebe;
Figur 2
den oberen Strebabschnitt der die Kreuzstrebe gemäß Figur 1 bildenden Streben;
Figur 3
eine Teleskopklemme;
Figur 4
in Explosionsdarstellung einen unteren Strebabschnitt mit einem sein oberes Ende verschließenden Rohrstopfen und einem unteren Ansatzstück;
Figur 5
die Kreuzstrebe gemäß Figur 1 in maximaler Sitzbreiteneinstellung;
Figur 6
in gegenüber Figur 1 verkleinertem Maßstab einen oberen Ausschnitt der Kreuzstrebe mit aufgebrachter Sitzfläche;
Figur 7
die Darstellung gemäß Figur 6 in Draufsicht;
Figur 8
eine in Figur 7 gestrichelt angedeutete Spannleiste in Draufsicht und
Figur 9
die Darstellung gemäß Figur 6 in Seitenansicht.
In the drawing, an exemplary embodiment of the invention is shown. Show it:
Figure 1
In the front view a cross strut set to the minimum seat width;
Figure 2
the upper strut section of the struts forming the cross strut according to FIG. 1;
Figure 3
a telescopic clamp;
Figure 4
an exploded view of a lower strut section with a pipe stopper closing its upper end and a lower extension;
Figure 5
the cross strut according to Figure 1 in maximum seat width adjustment;
Figure 6
on a reduced scale compared to FIG. 1, an upper section of the cross strut with an applied seat;
Figure 7
the representation of Figure 6 in plan view;
Figure 8
a clamping bar indicated in dashed lines in Figure 7 in plan view and
Figure 9
the representation of Figure 6 in side view.

Figur 1 zeigt eine Kreuzstrebe für einen nicht näher dargestellten Faltrollstuhl. Diese Kreuzstrebe ist in Vorderansicht dargestellt, liegt also quer zur Längsachse des Faltrollstuhls und besteht im wesentlichen aus zwei kreuzweise über ein Kreuzstrebengelenk 1 miteinander verbundenen Streben 2.Figure 1 shows a cross strut for a not shown Folding wheelchair. This cross strut is shown in front view is therefore transverse to the longitudinal axis of the folding wheelchair and consists essentially of two crosswise over a cross strut joint 1 interconnected struts 2.

Jede Strebe 2 setzt sich zusammen aus einem oberen, rohrförmig ausgebildeten Strebabschnitt 2a und einem ebenfalls als Rohr ausgebildeten unteren Strebabschnitt 2b, der teleskopförmig im oberen Strebabschnitt 2a stufenweise verschiebbar geführt ist. Jeder Strebabschnitt 2a, 2b weist eine Lochreihe 3, 4 auf, die miteinander korrespondieren. Die das Kreuzstrebengelenk 1 bildende Schraube oder dergl. ist durch eine Bohrung 3a der Lochreihe 3 des oberen Strebabschnittes 2a und durch drei mit dieser Bohrung 3a fluchtende Bohrungen 4a der Lochreihe 4 des zugeordneten unteren Strebabschnittes 2b und 3a, 4a der zweiten Strebe 2 gesteckt. Dabei sind die Lochreihen 3, 4 so angeordnet, daß das Kreuzstrebengelenk 1 immer in das Zentrum der Kreuzstelle gelegt werden kann, also in der lotrechten Längsmittelebene M auf der Höhe h gegenüber den unteren Schwenkpunkten 5 der beiden Streben 2. Hierdurch ist sichergestellt, daß die Seitenrahmen des Faltrollstuhls auch bei Verstellung der Sitzbreite immer parallel zueinander stehen.Each strut 2 is composed of an upper, tubular trained strut section 2a and also as a tube trained lower strut section 2b, the telescopic in upper strut section 2a is guided gradually displaceable. Each strut section 2a, 2b has a row of holes 3, 4 which correspond with each other. The cross brace joint 1 Screw or the like. Is through a hole 3a of the row of holes 3 of the upper strut section 2a and by three with this Hole 3a aligned holes 4a of the row of holes 4 of the associated lower strut section 2b and 3a, 4a of the second strut 2 inserted. The rows of holes 3, 4 are arranged so that the cross strut joint 1 always in the center of the cross point can be placed, i.e. in the vertical longitudinal median plane M at height h compared to the lower pivot points 5 of the two Struts 2. This ensures that the side frames the folding wheelchair, even when adjusting the seat width stand parallel to each other.

An dem oberen Strebabschnitt 2a ist jeweils eine Kreuzstrebenlasche 6 angelenkt über eine Verbindung 7, die durch eine Mehrfachbohrung 8 der Kreuzstrebenlasche 6 und eine Bohrung 9a einer die Lagerung bildenden Lochreihe 9 auf dem oberen Strebabschnitt 2a geführt ist. Die Bohrungen 9a sind nicht durch den oberen Strebabschnitt 2a hindurchgeführt, um einen maximalen Einschub des unteren Strebabschnitts in den oberen Strebabschnitt zu ermöglichen. In einer zweckmäßigen Ausführungsform ist auf den oberen Strebabschnitt ein U-Profil mit seinen U-Schenkeln aufgeschweißt. In dem U-Schenkel sind die Bohrungen 9a der Lochreihe 9 vorgesehen, während in den zwischen U-Profil und Strebabschnitt gebildeten Kanal ein Flachstahl eingeschoben ist, der eine der Lochreiche 9 entsprechende Reihe von Gewindebohrungen aufweist.On the upper strut section 2a there is a cross strut tab 6 articulated via a connection 7 through a multiple hole 8 of the cross strut plate 6 and a bore 9a the row of holes 9 forming the bearing on the upper strut section 2a is performed. The holes 9a are not through the top Bracket section 2a passed through for maximum insertion of the lower strut section into the upper strut section. In an expedient embodiment, the upper strut section welded a U-profile with its U-legs. The holes 9a of the row of holes are in the U-leg 9 provided while in the between U-profile and strut section formed channel is inserted a flat steel, the one of the hole ranges 9 corresponding row of threaded holes having.

Figur 1 zeigt die Kreuzstrebe in einer Einstellung für minimale Sitzbreite. Die beiden Streben 2 sind auf minimale Länge verkürzt; das Kreuzstrebengelenk 1 ist durch die oberste Bohrung 3a des oberen Strebabschnitts 2a und somit durch die unterste Bohrung 4a des zugeordneten unteren Strebabschnitts 2b geführt; die Verbindung 7 ist durch die obersten Bohrungen der Mehrfachbohrung 8 der Kreuzstrebenlasche 6 und der Lochreihe 9 des oberen Strebabschnitts 2a geführt. Die Sitzbreite wird dabei bestimmt durch den Abstand a zwischen den beiden oberen Enden der Streben 2, die durch je ein quer zur Strebe 2 in Längsrichtung des Faltrollstuhles liegendes Sitzprofil 10 definiert ist. In einem praktischen Ausführungsbeispiel beträgt die minimale Sitzbreite z.B. 23 cm und die in Figur 5 dargestellte maximale Sitzbreite z.B. 33,5 cm. Figure 1 shows the cross strut in a setting for minimal Seat width. The two struts 2 are shortened to a minimum length; the cross strut joint 1 is through the top hole 3a of the upper strut section 2a and thus through the lowest hole 4a of the associated lower strut section 2b; the Connection 7 is through the top holes of the multiple hole 8 of the cross strut plate 6 and the row of holes 9 of the upper one Buttress section 2a performed. The seat width is determined by the distance a between the two upper ends of the struts 2, each by a transverse to the strut 2 in the longitudinal direction of the folding wheelchair lying seat profile 10 is defined. In one practical embodiment is the minimum seat width e.g. 23 cm and the maximum seat width shown in Figure 5 e.g. 33.5 cm.

In der die maximale Sitzbreite definierenden Einstellung der Kreuzstrebe gemäß Figur 5 ist die Höhe h des Kreuzstrebengelenkes 1 gegenüber der der Figur 1 unverändert geblieben; das Kreuzstrebengelenk 1 liegt auch immer noch auf der lotrechten Längsmittelebene M. Abweichend von der Figur 1 sind aber das Kreuzstrebengelenk 1 sowie die Verbindungen 7 jeweils in der unteren Position der zugeordneten Lochreihen 3, 4, 8, 9 vorgesehen. Da jede dieser Lochreihen mehrere Bohrungen aufweist, sind Zwischenstellungen möglich.In the setting defining the maximum seat width Cross strut according to FIG. 5 is the height h of the cross strut joint 1 remained unchanged from that of FIG. 1; the Cross strut joint 1 is still on the vertical Longitudinal center plane M. Deviating from FIG. 1, however, these are Cross strut joint 1 and the connections 7 each in the Lower position of the assigned rows of holes 3, 4, 8, 9 provided. Since each of these rows of holes has multiple holes Intermediate positions possible.

Die Figuren 1 und 5 lassen erkennen, daß das untere Ende jedes oberen Strebabschnittes 2a und der angeordnete Bereich des unteren Strebabschnittes 2b von einer Teleskopklemme 11 gleichzeitig umgriffen und spielfrei geklemmt sind. Diese Figuren zeigen ferner in Verbindung mit Figur 4, daß das untere Ende des unteren Strebabschnittes 2b durch ein aufgeschobenes, mit dem unteren Strebabschnitt 2a zu verschraubendes unteres Ansatzstück 12 gebildet ist, das T-förmig ausgebildet ist. Auf das obere Ende des unteren Strebabschnittes 2b ist ein Rohrstopfen 19 aufgesetzt, der im Durchmesser des außen liegenden Abschnittes so bemessen ist, daß eine spielarme Führung des oberen Endes des unteren Strebabschnittes 2b im oberen Strebabschnitt 2a gewährleistet ist.Figures 1 and 5 show that the lower end of each upper strut section 2a and the arranged area of the lower Strut section 2b by a telescopic clamp 11 at the same time are gripped and clamped without play. These figures also show in conjunction with Figure 4 that the lower end of the lower Buttress section 2b by a slid-on, with the lower Bracket section 2a to be screwed lower extension 12 is formed is T-shaped. On the top of the a lower plug portion 2b, a pipe plug 19 is placed, the dimensioned in the diameter of the outer section is that a low-clearance guide of the upper end of the lower Strut section 2b guaranteed in the upper strut section 2a is.

Neben einer Sitzbreitenverstellung ermöglicht die dargestellte Kreuzstrebe aber auch eine Sitztiefenverstellung. Diese wird nachfolgend anhand der Figuren 6 bis 9 beschrieben:In addition to a seat width adjustment, the shown Cross brace but also a seat depth adjustment. This will described below with reference to FIGS. 6 to 9:

Das Sitzprofil 10 ist zweiteilig ausgebildet, wobei der vordere Sitzprofilabschnitt 10a stufenlos im Hauptsitzrohr 10b teleskopiert. Auf den beiden vorderen Sitzprofilabschnitten 10a ist eine zusammen mit diesen verschiebbare vordere Sitzbespannung 13 befestigt, die teilweise von einer stationären hinteren, auf den beiden Hauptsitzrohren 10b befestigten Sitzbespannung 14 übergriffen ist. The seat profile 10 is formed in two parts, the front Seat profile section 10a continuously telescoped in the main seat tube 10b. On the two front seat profile sections 10a a movable front seat cover 13 together with these attached, partially from a stationary rear, to the two main seat tubes 10b attached seat cover 14 overlapped is.

Zur Festlegung der vorderen Sitzbespannung 13 sind zwei Spannleisten 15 vorgesehen, die jeweils oberhalb des ihnen zugeordneten Sitzprofils 10 liegen und die vordere Sitzbespannung 13 auf die vorderen Sitzprofilabschnitte 10a sowie auf die beiden Hauptsitzrohre 10b pressen. Die Befestigung jeder Spannleiste 15 erfolgt über zwei Schraubverbindungen 16, 17, deren hintere in einem Langloch 18 in der Oberseite des Hauptsitzrohres 10b geführt ist und so eine stufenlose Teleskopierung ermöglicht und zugleich eine Auszugssicherung bildet.To fix the front seat cover 13 are two tensioning strips 15 provided, each above that assigned to them Seat profile 10 and the front seat cover 13th on the front seat profile sections 10a and on the two Press head tube 10b. The attachment of each tensioning bar 15 takes place via two screw connections 16, 17, the rear in an elongated hole 18 in the top of the main seat tube 10b is and thus enables stepless telescoping and at the same time forms a protection against moving out.

Die vordere Sitzbespannung ist ebenso wie die hintere Sitzbespannung in ihrer Breite verstellbar (z.B. mittels nicht dargestellter Klettbänder, Schnallen oder dergl.) und sind so auf die jeweils gewünschte, mit der Kreuzstrebe eingestellte Rahmenbreite anpaßbar. Durch die zweiteilige Ausbildung der Sitzbespannung ist aber auch ihre Längenverstellung problemlos möglich. Die vordere Sitzbespannung 13 ist um die Spannleisten 15 herumgelegt, während die hintere Sitzbespannung 14 um die Hauptsitzrohre 10b geführt ist. Bei der Sitztiefeneinstellung bleibt die hintere Sitzbespannung 14 stationär, während die vordere Sitzbespannung 13 zusammen mit den vorderen Sitzprofilabschnitten 10a verschoben wird.The front seat cover is the same as the rear seat cover adjustable in width (e.g. by means of a not shown Velcro straps, buckles or the like) and are so on the desired frame width set with the cross strut adaptable. Due to the two-part design of the seat covering their length adjustment is also possible without any problems. The front seat cover 13 is placed around the tensioning strips 15, while the rear seat cover 14 around the main seat tubes 10b is performed. With the seat depth adjustment, the rear seat cover 14 stationary, while the front seat cover 13 together with the front seat profile sections 10a is moved.

Claims (11)

  1. Cross-strut arrangement for a folding roller-mounted chair, having at least two struts (2) which are connected to one another in a crosswise manner via a cross-strut articulation (1), are designed such that they can be changed in length, by telescoping in each case, for the purpose of adjusting the seat width (a), and, at their top end, each bear a seat profile (10) which is located in the longitudinal direction of the folding roller-mounted chair, transversely with respect to the strut (2), serves for fixing the seat surface (13, 14) and can be changed in order to increase the seat depth, each strut (2) is made up of a top strut section (2a) and a bottom strut section (2b), of which one (2b) telescopes in the other (2a) in a stepwise manner, and the two strut sections (2a, 2b) of each strut (2) having holes (3a, 4a) corresponding to one another for mutual locking, being characterized by the following features:
    a) the two strut sections (2a, 2b) of each strut (2) each have a row of holes (3, 4), these rows corresponding to one another;
    b) the single screw or the like which forms the cross-strut articulation (1) is optionally fitted through a bore (3a) of one row of holes (3) and, at the same time, through three further bores (4a, 3a, 4a) which are in alignment with said bore (3a) and belong to the other three rows of holes (4, 3, 4) of the two struts (2);
    c) the rows of holes (3, 4) are arranged such that the cross-strut articulation (1) can always be fitted in the centre of the crossover point.
  2. Cross-strut arrangement according to Claim 1, characterized in that the bottom strut section (2b) is guided in the tubular top strut section (2a) such that it can be displaced telescopically.
  3. Cross-strut arrangement according to Claim 1 or 2, characterized in that the bottom strut section (2b) is also designed as a tube.
  4. Cross-strut arrangement according to Claim 1, 2 or 3, characterized in that a cross-strut link plate (6) is articulated on the top strut section (2a), the connection (7) taking place, in accordance with the seat-width setting of the cross-strut arrangement, in a bore (9a) of a mounting-forming row of holes (9) on the top strut section (2a).
  5. Cross-strut arrangement according to Claim 4, characterized in that a number of bores (8) are also provided on the cross-strut link plate (6) for the connection (7) of the cross-strut link plate (6) to the top strut section (2a).
  6. Cross-strut arrangement according to one of the preceding claims, characterized in that the bottom end of the top strut section (2a) and the adjoining region of the bottom strut section (2b) are simultaneously enclosed, and clamped in a play-free manner, by a telescope clamp (11).
  7. Cross-strut arrangement according to one of the preceding claims, characterized in that the bottom strut section (2b) is of two-part design.
  8. Cross-strut arrangement according to one of the preceding claims, characterized in that the seat profile (10) is of two-part design, the front seat-profile section (10a) telescoping in the main seat tube (10b).
  9. Cross-strut arrangement according to Claim 8, characterized in that fastened on the two front seat-profile sections (10a) is a front seat covering (13) which can be displaced along with said sections and has a stationary, rear seat covering (14), fastened on the two main seat tubes (10b) located over part of it.
  10. Cross-strut arrangement according to Claim 8 or 9, characterized in that provided for fixing the front seat covering (13) are two clamping strips (15) which are each located above the seat profile (10) assigned to them and which press the front seat covering (13) onto the front seat-profile section (10a) and onto the two main seat tubes (10b).
  11. Cross-strut arrangement according to Claim 10, characterized in that the clamping strip (15) is fastened via screw-connections (16, 17), of which the rear one (17) is guided in a slot (18) in the top side of the main seat tube (10b) and forms a pull-out safeguard.
EP98115226A 1997-09-25 1998-08-13 Cross-strut for foldable wheelchair Expired - Lifetime EP0904760B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742267 1997-09-25
DE19742267A DE19742267C2 (en) 1997-09-25 1997-09-25 Cross brace for a folding wheelchair

Publications (2)

Publication Number Publication Date
EP0904760A1 EP0904760A1 (en) 1999-03-31
EP0904760B1 true EP0904760B1 (en) 2002-11-06

Family

ID=7843552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115226A Expired - Lifetime EP0904760B1 (en) 1997-09-25 1998-08-13 Cross-strut for foldable wheelchair

Country Status (4)

Country Link
US (1) US6050582A (en)
EP (1) EP0904760B1 (en)
JP (1) JP3839596B2 (en)
DE (2) DE19742267C2 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2229747T3 (en) * 1998-02-24 2005-04-16 Sunrise Medical Hhg Inc. WHEEL SILA AND ARTICULATED MECHANISM FOR USE WITH A WHEELCHAIR.
US6302429B1 (en) * 1999-11-16 2001-10-16 Da International, Ltd Convertible wheelchair
US6270105B1 (en) * 1999-11-16 2001-08-07 Da International, Ltd. Method of wheelchair construction
US6572133B1 (en) 2001-01-18 2003-06-03 Sunrise Medical Hhg, Inc. Folding mechanism for a wheelchair
JP3993996B2 (en) * 2001-10-23 2007-10-17 株式会社ミキ wheelchair
US6679510B2 (en) * 2002-01-25 2004-01-20 Max C. Perena Walking assistance device
US20040021299A1 (en) * 2002-08-02 2004-02-05 Tsai Ruey Yun Folding device for wheelchair
US20040021298A1 (en) * 2002-08-02 2004-02-05 Tsai Ruey Yun Foldable wheel chair
US7055847B2 (en) * 2002-08-09 2006-06-06 Miller Mark E Collapsible support structure
JP3844354B2 (en) * 2003-12-02 2006-11-08 日進医療器株式会社 Wheelchair with adjustable seat width
US20060237943A1 (en) * 2005-04-20 2006-10-26 Eric Lai Structure of a wheelchair
EP2070500A1 (en) 2007-12-14 2009-06-17 Invacare International Sàrl Foldable wheelchair with x-shaped cross bracing frame assembly
US20100025969A1 (en) * 2008-01-19 2010-02-04 Rich Kent Adjustable Wheelchair
DE602008006055D1 (en) 2008-07-03 2011-05-19 Invacare Int Sarl Collapsible wheelchair
EP2156814A1 (en) 2008-08-22 2010-02-24 Invacare International Sàrl Foldable wheelchair
NO331369B1 (en) * 2010-01-07 2011-12-12 Handicare As Welding device for cross-frame construction
US20120126513A1 (en) * 2010-11-18 2012-05-24 Richard Vincent Kent Adjustable Wheelchair
JP5727287B2 (en) * 2011-04-28 2015-06-03 株式会社松永製作所 Wheelchair crossbar member and folding wheelchair
US20120286552A1 (en) * 2011-05-11 2012-11-15 Martin Kace Wheelchair seat assembly
US8454048B1 (en) 2012-01-30 2013-06-04 Columbia Medical Manufacturing, Llc Folding wheelchair mechanism
US9060909B1 (en) * 2014-08-05 2015-06-23 KD HEALTH CARE Co. USA, INC. Foldable electric wheelchair
EP3108864B1 (en) * 2015-06-23 2017-11-01 Gregor Horacek Folding wheelchair
US11793695B2 (en) * 2019-06-25 2023-10-24 University Of Washington Multifunction toilet wheelchair
USD976763S1 (en) 2021-02-10 2023-01-31 Drive Devilbiss Healthcare Rollator
US11559459B2 (en) 2021-02-16 2023-01-24 Drive Devilbiss Healthcare Rollator
USD1078556S1 (en) * 2024-10-21 2025-06-10 Henan Huanzhong Network Technology Co., Ltd. Walking aid attachment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733754A (en) * 1956-02-07 Invalid walker
US2669289A (en) * 1948-09-01 1954-02-16 John A Usher Folding chair
US2649309A (en) * 1951-06-08 1953-08-18 Douglas D Deissner Foldable wheel chair and steerable wheel attachment therefor
US3117760A (en) * 1960-03-31 1964-01-14 Robert A Dresbach Support for a portable and collapsible exercising device
US4082348A (en) * 1976-03-01 1978-04-04 Invacare Corporation Adjustable wheel chair
US4840390A (en) * 1986-09-30 1989-06-20 Invacare Corporation Symmetrically modular wheelchair
US4989890A (en) * 1986-09-30 1991-02-05 Invacare Corporation Length and width adjustable wheelchair
US5154438A (en) * 1991-09-30 1992-10-13 Barclay Hugh W Tilting and folding wheelchair
ES2188833T3 (en) * 1996-09-04 2003-07-01 Meyra Wilhelm Meyer Gmbh & Co WHEELCHAIR.

Also Published As

Publication number Publication date
DE59806168D1 (en) 2002-12-12
EP0904760A1 (en) 1999-03-31
DE19742267A1 (en) 1999-04-08
US6050582A (en) 2000-04-18
JPH11164852A (en) 1999-06-22
JP3839596B2 (en) 2006-11-01
DE19742267C2 (en) 1999-10-21

Similar Documents

Publication Publication Date Title
EP0904760B1 (en) Cross-strut for foldable wheelchair
EP0635286B1 (en) Sliding board
EP0813021B1 (en) Telescopic support
DE2648951C3 (en) Vehicle seat
DE2851987A1 (en) SUPPORTING DEVICE FOR LADDERS
DE2626032B2 (en) Folding stroller
EP0198056B1 (en) Seat support for chairs, especially for rotating work-chairs
DE10019292A1 (en) Modular table has two or more supports linked by one or more rectangular hollow profiles which fit into rectangular housings attached to tops of supports
EP0417177B1 (en) Shelving system
DE4039097C2 (en) Height adjustable foot for furniture
DE8123281U1 (en) Device for touring for a ski safety binding
DE2415572A1 (en) FURNITURE, IN PARTICULAR TABLE BASE
EP3777615B1 (en) Height-adjustable bed
DE2841563C2 (en)
AT500588A1 (en) Rose arch or pergola, assembled of vertical bars and telescopic bars used for upper horizontal segment
DE9406942U1 (en) Telescopic ladder
DE2718627B1 (en) Compass head for a spring bow compass
DE19517227A1 (en) Ladder with runged stringers and upper swivel joint
DE4108421C1 (en) Folding pushchair for children - has crossed support rolls and two-armed levers forming connecting links
DE10044488B4 (en) Chair with height-adjustable seat
EP1073850A1 (en) Chain link for energy transmission chains
EP1062894A1 (en) Furniture for sitting with height adjustable seat
DE19745072A1 (en) Stackable frame for chair
DE4113469C2 (en)
DE20003897U1 (en) Extending table

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990311

AKX Designation fees paid

Free format text: DE FR GB

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OTTO BOCK HEALTHCARE GMBH

17Q First examination report despatched

Effective date: 20020626

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59806168

Country of ref document: DE

Date of ref document: 20021212

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20021123

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030807

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100928

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20110824

Year of fee payment: 14

Ref country code: FR

Payment date: 20110901

Year of fee payment: 14

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120813

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120813

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120831

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59806168

Country of ref document: DE

Effective date: 20130301