EP3233013B1 - Folding wheelchair - Google Patents

Folding wheelchair Download PDF

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Publication number
EP3233013B1
EP3233013B1 EP15828735.9A EP15828735A EP3233013B1 EP 3233013 B1 EP3233013 B1 EP 3233013B1 EP 15828735 A EP15828735 A EP 15828735A EP 3233013 B1 EP3233013 B1 EP 3233013B1
Authority
EP
European Patent Office
Prior art keywords
inner tube
tube
seat
folding wheelchair
wheelchair according
Prior art date
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Active
Application number
EP15828735.9A
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German (de)
French (fr)
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EP3233013A1 (en
Inventor
Sergej DICK
Patrick HÖHN
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 Mobility Solutions GmbH
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Otto Bock Mobility Solutions GmbH
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Publication of EP3233013A1 publication Critical patent/EP3233013A1/en
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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
    • A61G5/1064—Arrangements for adjusting the seat adjusting the depth 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0883—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having locking means for maintaining a folded or unfolded condition
    • 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

Definitions

  • the invention relates to a folding wheelchair with two side frames, which are interconnected via a crossbar and each having a slotted seat tube between which a fabric is stretched to form a seat of a seat, which are formed identically and, wherein the fabric at two opposite edges loops has, in each of which a stringing rod is added.
  • Such a folding wheelchair is for example from the DE 297 24 574 U1 known.
  • the two side frames between a spaced use position and an adjacent collapsing position are substantially parallel to each other against each other movable and lockable at least in the position of use.
  • On the side frames which consist of tubes welded together, on the one hand depending on a rear drive wheel and on the other hand depending mounted a pivotable about a vertical axis steering wheel.
  • the cross strut consists of intersecting tubes or links which are hinged together at the intersection of a cross strut joint and articulated with their lower ends respectively on a lower seat tube of the side frames.
  • the seat depth is adjustable.
  • the seat tubes are telescopic.
  • the tissue forming the seat is laid over the outer tube and connected to the inner tube.
  • the inner tube is pulled out of the outer tube and pulls the guided around the inner tube tissue, so that the seat is increased. If the inner tube is pushed back into the outer tube, the tissue must be wrapped around the upper seat tube manually so that no wrinkles form on the seat surface, which can lead to pressure points on the user's body.
  • the slot in the seat tube may be longer than the length of the seat fabric, so that it can be moved to adjust the seat depth forward and backward.
  • the seat tube is closed by end caps. By selecting end caps of suitable length, the seat fabric can be positioned in position.
  • the seat fabric is provided at its sietlichen ends with loops in which a stringing rod is added. With these rods, the seat fabric is hung in the slotted seat tube. Threaded end caps seal the seat tubes.
  • the invention has for its object to provide a generic Faltrollstuhl so educate that the seat depth is easily adjustable and a drape of the fabric is excluded with a change in the seat depth.
  • a sleeve provided with a slit extending in the longitudinal direction is provided between each inner tube and each stringing rod, which sleeve may in particular preferably be provided with a threaded bore into which a screw fixing the fabric to the stringing rod can be screwed.
  • the tissue is moved in the outer tube, wherein the sleeve is connected to the inner tube.
  • the sleeve and the stringing rod are connected to each other via the screw.
  • the screw can engage through the fabric and a recess or through-hole in the stringing bar.
  • the inner tube can also be connected directly to the stringing rod.
  • the inner tube can be closed at its end remote from the tissue with a stopper.
  • the outer tubes are provided with a plurality of longitudinally parallel spaced holes, each cooperating with a pin arranged in the inner tube for adjusting the seat depth of the seat.
  • the pins are preferably displaceable against the force of a spring.
  • the inner tube can also be connected by clamping, or force and / or frictional engagement with the outer tube, so that a stepless telescoping of the upper seat tubes is possible.
  • the folding wheelchair consists of the two side frames 1, 1 ', which are interconnected via a cross strut 2.
  • a cross strut 2 At the substantially identical, (but mirrored) formed side frames 1, 1 'are each a rear drive wheel 6, 6', and a pivotable about a vertical axis steering wheel 7, 7 'arranged.
  • the cross strut 2 has two identically formed upper seat tubes 10, 10 'and can be folded around the cross strut joint 15.
  • the upper seat tubes 10, 10 ' are identical, so that for the further description, if necessary, only reference to a seat tube 10 or related details is taken, but the description is then applicable to both seat tubes 10, 10'.
  • the upper seat tubes 10, 10 ' which are part of the side frame 1,1' but arranged on the cross brace 2, preferably welded to it, consist of an outer tube 11, 11 'and an inner tube 12, 12'. Both the inner tube 12 and the outer tube 11 are provided in the longitudinal direction L with a slot 111 and 121, which extends over the full length and opens into both ends 117, 127.
  • the inner tube 12 is closed at one end 127 by means of a plug 122.
  • the outer tube 11 may be closed at one end 117 with a plug (not shown).
  • the seat forming fabric 3 is provided at its opposite edges 31, 31 'with a loop 30, 30', and in the loops 30, 30 'is a stringing bar 20, 20' is added, which are connected to the fabric 3.
  • the clothing rods 20, 20 ' engage through a sleeve 17, which is insertable into the inner tube 12.
  • the sleeve 17 is provided with a continuous longitudinal direction L slot 171.
  • parallel spaced holes 110 are provided ( FIG. 3 ).
  • a bow spring 125 is inserted with a pin 126 which projects through a provided in the inner tube 12 bore 123 in the radial direction of the inner tube 12 and can cooperate with one of the holes 110 in the outer tube 11.
  • the pin 126 can be pressed radially inward ( FIG. 4 ), the inner tube 12 can then be moved relative to the outer tube 11, wherein the pin 126, when it comes into coincidence with one of the bore 110, snaps into it.
  • Figures 8.1 and 8.2 show a cross section through the upper seat tube 10.
  • the outer tube 11 the inner tube 12, the sleeve 17 and the stringing bar 20 are arranged so that the slots 111, 121 and 171 are aligned with each other.
  • the fabric 3 is wrapped around the stringing bar 20 with a loop 30.
  • the free end 32 can be sewn to the fabric web 3 or attached via a hook not shown here 33 on this.
  • the screw 120 is screwed into the threaded bore 170 of the sleeve 17, passed through the fabric 3 and inserted into a through hole (not shown here) in the stringing rod 20 (US Pat. Figure 8.1 ), so that the fabric 3 is firmly connected to the stringing bar 20.
  • the screw 120 clamps the fabric 3 to the stringing rod 20, or even presses itself on the stringing rod 20.
  • the screw 120 is completely received with its head in the bore 124 in the inner tube 12. If the inner tube 12 is displaced relative to the outer tube 11, the clothing rod 20 is displaced accordingly via the sleeve 17, whereby the fabric 3 is guided in the slots 111, 121, 171 and likewise displaced in the longitudinal direction L, without the effective area of the fabric 3 changed. Its position in the upper seat tubes 10, 10 'is only changed accordingly, the seat of the seat 4, however, not. When telescoping the upper seat tube so no drape of the fabric 3 can arise, but it remains taut. By locking the inner tube 12 relative to the outer tube 10 by means of the pin 126, a rapid and tool-free adjustment of the seat depth is possible.
  • FIGS. 9 to 11 show an embodiment in which the upper seat tube 10 is designed infinitely telescopically.
  • the effective surface 131 eccentrically about a pivot axis 132 in a clamping position ( FIG. 9 ) or a relaxed position can be brought, a guided through the outer tube 11 bolt 133 is pressed onto the inner tube 12, whereby the outer tube 11 is fixed to the inner tube 12.
  • the clamping lever 130 By pivoting the clamping lever 130 in its relaxed position (not shown), the frictional connection is released, and the inner tube 12 can be pulled out of the outer tube 11 by the desired length.

Description

Die Erfindung betrifft einen Faltrollstuhl mit zwei Seitenrahmen, die über eine Kreuzstrebe miteinander verbunden sind und jeweils ein geschlitztes Sitzrohr aufweisen, zwischen denen ein Gewebe zur Ausbildung einer Sitzfläche eines Sitzes gespannt ist, die identisch ausgebildet sind und, wobei das Gewebe an zwei gegenüberliegenden Kanten Schlaufen aufweist, in denen jeweils eine Bespannungsstange aufgenommen ist.The invention relates to a folding wheelchair with two side frames, which are interconnected via a crossbar and each having a slotted seat tube between which a fabric is stretched to form a seat of a seat, which are formed identically and, wherein the fabric at two opposite edges loops has, in each of which a stringing rod is added.

Ein solcher Faltrollstuhl ist beispielsweise aus der DE 297 24 574 U1 bekannt. Über die Kreuzstrebe sind die beiden Seitenrahmen zwischen einer beabstandeten Gebrauchsstellung und einer benachbarten Zusammenklappstellung im Wesentlichen parallel zu sich selbst gegeneinander bewegbar und zumindest in der Gebrauchsstellung verriegelbar. An den Seitenrahmen, die aus miteinander verschweißten Rohren bestehen, ist einerseits je ein hinteres Antriebsrad und andererseits je ein um eine Hochachse verschwenkbares Lenkrad gelagert. Die Kreuzstrebe besteht aus einander kreuzenden Rohren oder Lenkern, die im Kreuzungspunkt über ein Kreuzstrebengelenk gelenkig miteinander verbunden und mit ihren unteren Enden jeweils an einem unteren Sitzrohr der Seitenrahmen angelenkt sind.Such a folding wheelchair is for example from the DE 297 24 574 U1 known. About the cross strut, the two side frames between a spaced use position and an adjacent collapsing position are substantially parallel to each other against each other movable and lockable at least in the position of use. On the side frames, which consist of tubes welded together, on the one hand depending on a rear drive wheel and on the other hand depending mounted a pivotable about a vertical axis steering wheel. The cross strut consists of intersecting tubes or links which are hinged together at the intersection of a cross strut joint and articulated with their lower ends respectively on a lower seat tube of the side frames.

Um bei dem aus der US 8,449,032 B2 bekannten Faltrollstuhl die Sitzfläche des Faltrollstuhls an verschiedene Körpergrößen der potentiellen Benutzer anpassen zu können, ist die Sitztiefe einstellbar. Zur Einstellung der Sitztiefe sind die Sitzrohre teleskopierbar ausgebildet. Das die Sitzfläche bildende Gewebe ist über das Außenrohr gelegt und mit dem Innenrohr verbunden. Zum Teleskopieren wird das Innenrohr aus dem Außenrohr herausgezogen und zieht das um das Innenrohr herumgeführte Gewebe mit, so dass die Sitzfläche vergrößert wird. Wird das Innenrohr in das Außenrohr wieder hineingeschoben, muss das Gewebe manuell um das obere Sitzrohr herumgelegt werden, damit sich an der Sitzfläche keine Falten ausbilden, die zu Druckstellen am Körper des Benutzers führen können.To get out of the US 8,449,032 B2 Known folding wheelchair to be able to adjust the seat of the folding wheelchair to different body sizes of potential users, the seat depth is adjustable. To adjust the seat depth, the seat tubes are telescopic. The tissue forming the seat is laid over the outer tube and connected to the inner tube. For telescoping the inner tube is pulled out of the outer tube and pulls the guided around the inner tube tissue, so that the seat is increased. If the inner tube is pushed back into the outer tube, the tissue must be wrapped around the upper seat tube manually so that no wrinkles form on the seat surface, which can lead to pressure points on the user's body.

Aus der DE 297 18 536 U1 ist ein Faltrollstuhl bekannt, bei dem zur Einstellung der Sitztiefe die Kreuzstrebe mit dem auf dieser aufgenommenen Sitz in Fahrtrichtung des Rollstuhls verschiebbar und in wenigstens zwei Einstelllagen fixierbar ist. Um die Kreuzstrebe verschieben zu können, müssen Verschraubungen gelöst und anschließend wieder sicher fixiert werden, wodurch eine schnelle Anpassung an die Sitztiefe erschwert wird. In der Regel ist hierfür auch Werkzeug notwendig.From the DE 297 18 536 U1 a Faltrollstuhl is known, in which the cross-post with the recorded on this seat in the direction of travel of the wheelchair and in at least two adjustment positions can be fixed to adjust the seat depth. In order to move the cross strut, unions must be loosened and then securely fixed again, making it difficult to quickly adapt to the seat depth. As a rule, this tool is also necessary.

Aus der DE 202 21 587 U1 ist ein Faltrollstuhl bekannt, bei dem der Schlitz im Sitzrohr länger sein kann als die Länge des Sitzgewebes, sodass dieses zur Einstellung der Sitztiefe nach vorn und nach hinten verschoben werden kann. Das Sitzrohr wird durch Endkappen verschlossen. Durch die Auswahl von Endkappen geeigneter Länge kann das Sitzgewebe in seiner Lage positioniert werden.From the DE 202 21 587 U1 a folding wheelchair is known in which the slot in the seat tube may be longer than the length of the seat fabric, so that it can be moved to adjust the seat depth forward and backward. The seat tube is closed by end caps. By selecting end caps of suitable length, the seat fabric can be positioned in position.

Bei dem in der US 2,914,111 beschriebenen Faltrollstuhl ist das Sitzgewebe an seinen sietlichen Enden mit Schlaufen versehen, in denen eine Bespannungsstange aufgenommen ist. Mit diesen Stangen wird das Sitzgewebe in das geschlitzte Sitzrohr eingehängt. Über mit einem Gewinde versehene Endkappen werden die Sitzrohre verschlossen.In the in the US 2,914,111 described Faltrollstuhl the seat fabric is provided at its sietlichen ends with loops in which a stringing rod is added. With these rods, the seat fabric is hung in the slotted seat tube. Threaded end caps seal the seat tubes.

Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Faltrollstuhl so fortzubilden, dass die Sitztiefe einfach einstellbar ist und ein Faltenwurf des Gewebes bei einer Veränderung der Sitztiefe ausgeschlossen wird.The invention has for its object to provide a generic Faltrollstuhl so educate that the seat depth is easily adjustable and a drape of the fabric is excluded with a change in the seat depth.

Zur Problemlösung zeichnet sich ein gattungsgemäßer Faltrollstuhl durch folgende Merkmale aus:

  1. a) die Sitzrohre (10, 10') bestehen aus einem Außenrohr (11, 11') und einem Innenrohr (12, 12'),
  2. b) das Außenrohr (11, 11') weist einen sich in Längsrichtung (L) erstreckenden Schlitz (111) auf, der zumindest in ein Außenrohrende (117) mündet,
  3. c) das Innenrohr (12, 12') weist einen sich in Längsrichtung (L) erstreckenden Schlitz (121) auf, der zumindest in ein Innenrohrende (127) mündet,
  4. d) jede Bespannungsstange (20, 20') ist in einem Außenrohr (11, 11') aufgenommen und mündet in das zugehörige Innenrohr (12, 12'),
  5. e) das Gewebe (3) ist durch die Schlitze (111, 121) vom Innenrohr (12, 12') und Außenrohr (11, 11') nach außen geführt,
  6. f) das Innenrohr (12, 12'), das Gewebe (3) und die Bespannungsstange (20, 20') sind miteinander verbunden.
To solve the problem, a generic folding wheelchair is characterized by the following features:
  1. a) the seat tubes (10, 10 ') consist of an outer tube (11, 11') and an inner tube (12, 12 '),
  2. b) the outer tube (11, 11 ') has a slot (111) extending in the longitudinal direction (L), which opens at least into an outer tube end (117),
  3. c) the inner tube (12, 12 ') has a slot (121) extending in the longitudinal direction (L), which opens at least into an inner tube end (127),
  4. d) each stringing rod (20, 20 ') is received in an outer tube (11, 11') and opens into the associated inner tube (12, 12 '),
  5. e) the fabric (3) is guided through the slots (111, 121) from the inner tube (12, 12 ') and outer tube (11, 11') to the outside,
  6. f) the inner tube (12, 12 '), the fabric (3) and the stringing bar (20, 20') are interconnected.

Durch diese Ausgestaltung wird das Gewebe, das mit dem Innenrohr verbunden ist, im Außenrohr verschoben, wobei die Führung über die Bespannungsstange und die Schlitze in den Außenrohren erfolgt. Die Sitzfläche bleibt bei einer Einstellung der Sitztiefe unverändert, die Sitzfläche selbst wird nur weiter nach vorn oder zurück verlagert. Das Gewebe bleibt bei einer Veränderung der Sitztiefe immer gespannt. Faltenbildung ist ausgeschlossen, sodass Druckstellen am Körper des Benutzers sicher vermieden werden.By this configuration, the tissue which is connected to the inner tube, moved in the outer tube, wherein the guide via the stringing rod and the slots in the outer tubes takes place. The seat remains unchanged when adjusting the seat depth, the seat itself is only moved further forward or backward. The fabric always stays taut when the seat depth changes. Wrinkling is excluded, so that pressure sores on the user's body are safely avoided.

Vorzugsweise ist zwischen jedem Innenrohr und jeder Bespannungsstange eine mit einem in Längsrichtung durchgängigen Schlitz versehene Hülse angeordnet, die insbesondere vorzugsweise mit einer Gewindebohrung versehen sein kann, in die eine das Gewebe an der Bespannungsstange fixierende Schraube eindrehbar ist. Über diese Hülse wird das Gewebe im Außenrohr verschoben, wobei die Hülse mit dem Innenrohr verbunden ist.Preferably, a sleeve provided with a slit extending in the longitudinal direction is provided between each inner tube and each stringing rod, which sleeve may in particular preferably be provided with a threaded bore into which a screw fixing the fabric to the stringing rod can be screwed. About this sleeve, the tissue is moved in the outer tube, wherein the sleeve is connected to the inner tube.

Vorzugsweise sind die Hülse und die Bespannungsstange über die Schraube miteinander verbunden. Die Schraube kann durch das Gewebe und eine Ausnehmung oder eine Durchgangsbohrung in die Bespannungsstange eingreifen.Preferably, the sleeve and the stringing rod are connected to each other via the screw. The screw can engage through the fabric and a recess or through-hole in the stringing bar.

Anstatt eine Hülse vorzusehen, kann das Innenrohr aber auch unmittelbar mit der Bespannungsstange verbunden werden.Instead of providing a sleeve, the inner tube can also be connected directly to the stringing rod.

Um den Aufbau des Innenrohres zu vereinfachen und eine optisch hochwertige Anmutung zu schaffen, kann das Innenrohr an seinem vom Gewebe abgewandten Ende mit einem Stopfen verschlossen werden.In order to simplify the structure of the inner tube and to create a visually high-quality appearance, the inner tube can be closed at its end remote from the tissue with a stopper.

Um die Teleskopierbarkeit der oberen Sitzrohre zu vereinfachen, sind die Außenrohre mit einer Mehrzahl in Längsrichtung parallel zueinander beabstandeter Löcher versehen, die jeweils mit einem im Innenrohr angeordneten Zapfen zur Einstellung der Sitztiefe des Sitzes zusammenwirken. Die Zapfen sind vorzugsweise gegen die Kraft einer Feder verschiebbar.In order to simplify the telescoping of the upper seat tubes, the outer tubes are provided with a plurality of longitudinally parallel spaced holes, each cooperating with a pin arranged in the inner tube for adjusting the seat depth of the seat. The pins are preferably displaceable against the force of a spring.

Das Innenrohr kann auch klemmend, beziehungsweise kraft- und/oder reibschlüssig mit dem Außenrohr verbunden werden, so dass eine stufenlose Teleskopierbarkeit der oberen Sitzrohre möglich ist.The inner tube can also be connected by clamping, or force and / or frictional engagement with the outer tube, so that a stepless telescoping of the upper seat tubes is possible.

Mit Hilfe einer Zeichnung soll ein Ausführungsbeispiel der Erfindung nachfolgend näher beschrieben werden. Es zeigen:

Figur 1
- die perspektivische Darstellung eines Faltrollstuhles;
Figur 2
- eine Explosions-Teildarstellung der Kreuzstrebe mit der Sitzfläche;
Figur 3
- eine perspektivische Darstellung des Außenrohres;
Figur 4
- eine Explosions-Teildarstellung aus Figur 2;
Figur 5
- das Innenrohr im Längsschnitt gemäß der Linie V-V in Figur 6;
Figur 6
- eine Draufsicht auf das Innenrohr;
Figur 7
- eine perspektivische Darstellung des Innenrohres;
Figur 8.1
- einen Querschnitt durch das obere Sitzrohr;
Figur 8.2
- den Querschnitt gemäß Figur 8.1 bei einer alternativen Ausführungsform;
Figur 9
- eine Teilschnittdarstellung durch ein Sitzrohr;
Figur 10
- den Schnitt entlang der Linie X-X nach Figur 9;
Figur 11
- eine perspektivische Teildarstellung des Sitzrohres.
With the aid of a drawing, an embodiment of the invention will be described in more detail below. Show it:
FIG. 1
- The perspective view of a folding wheelchair;
FIG. 2
- An exploded partial view of the cross brace with the seat;
FIG. 3
- A perspective view of the outer tube;
FIG. 4
- An explosion partial view FIG. 2 ;
FIG. 5
- The inner tube in longitudinal section along the line VV in FIG. 6 ;
FIG. 6
- A top view of the inner tube;
FIG. 7
- A perspective view of the inner tube;
Figure 8.1
- A cross section through the upper seat tube;
Figure 8.2
- the cross-section according to Figure 8.1 in an alternative embodiment;
FIG. 9
- A partial sectional view through a seat tube;
FIG. 10
- the section along the line XX after FIG. 9 ;
FIG. 11
- A partial perspective view of the seat tube.

Der Faltrollstuhl besteht aus den beiden Seitenrahmen 1, 1', die über eine Kreuzstrebe 2 miteinander verbunden sind. An den im Wesentlichen identisch, (aber gespiegelt) ausgebildeten Seitenrahmen 1, 1' sind je ein hinteres Antriebsrad 6, 6', und ein um eine Hochachse schwenkbares Lenkrad 7, 7' angeordnet. Zwischen den Seitenrahmen 1, 1' ist der Sitz 4 mit der Sitzfläche 3 und der Rückenlehne 5 vorgesehen. Die Kreuzstrebe 2 weist zwei identisch ausgebildete obere Sitzrohre 10, 10' auf und kann um das Kreuzstrebengelenk 15 zusammengefaltet werden.The folding wheelchair consists of the two side frames 1, 1 ', which are interconnected via a cross strut 2. At the substantially identical, (but mirrored) formed side frames 1, 1 'are each a rear drive wheel 6, 6', and a pivotable about a vertical axis steering wheel 7, 7 'arranged. Between the side frame 1, 1 ', the seat 4 with the seat 3 and the backrest 5 is provided. The cross strut 2 has two identically formed upper seat tubes 10, 10 'and can be folded around the cross strut joint 15.

Die oberen Sitzrohre 10, 10' sind identisch ausgebildet, so dass für die weitere Beschreibung gegebenenfalls nur Bezug auf ein Sitzrohr 10 beziehungsweise damit in Verbindung stehende Einzelheiten genommen wird, wobei die Beschreibung aber jeweils dann auf beide Sitzrohre 10, 10' anwendbar ist. Die oberen Sitzrohre 10, 10', die Bestandteil der Seitenrahmen 1,1' aber an der Kreuzstrebe 2 angeordnet, vorzugsweise mit dieser verschweißt sind, bestehen aus einem Außenrohr 11, 11' und einem Innenrohr 12, 12'. Sowohl das Innenrohr 12 als auch das Außenrohr 11 sind in Längsrichtung L mit einem Schlitz 111 beziehungsweise 121 versehen, der über die volle Länge reicht und in beide Enden 117, 127 mündet. Das Innenrohr 12 ist an einem Ende 127 mittels eines Stopfens 122 verschlossen. Auch das Außenrohr 11 kann an einem Ende 117 mit einem Stopfen (nicht gezeigt) verschlossen sein.The upper seat tubes 10, 10 'are identical, so that for the further description, if necessary, only reference to a seat tube 10 or related details is taken, but the description is then applicable to both seat tubes 10, 10'. The upper seat tubes 10, 10 ', which are part of the side frame 1,1' but arranged on the cross brace 2, preferably welded to it, consist of an outer tube 11, 11 'and an inner tube 12, 12'. Both the inner tube 12 and the outer tube 11 are provided in the longitudinal direction L with a slot 111 and 121, which extends over the full length and opens into both ends 117, 127. The inner tube 12 is closed at one end 127 by means of a plug 122. Also, the outer tube 11 may be closed at one end 117 with a plug (not shown).

Das die Sitzfläche bildende Gewebe 3 ist an seinen gegenüberliegenden Kanten 31, 31' mit einer Schlaufe 30, 30' versehen, und in den Schlaufen 30, 30' ist eine Bespannungsstange 20, 20' aufgenommen, die mit dem Gewebe 3 verbunden sind. Die Bespannungsstangen 20, 20' greifen durch eine Hülse 17 hindurch, die in das Innenrohr 12 einführbar ist. Auch die Hülse 17 ist mit einem in Längsrichtung L durchgängigen Schlitz 171 versehen. Um das Außenrohr 11 und das Innenrohr 12 zueinander teleskopieren zu können, sind im Außenrohr 11 in Längsrichtung L parallel zueinander beabstandete Bohrungen 110 vorgesehen (Figur 3). Im Inneren des Innenrohres 12 ist eine Bügelfeder 125 mit einem Zapfen 126 eingesetzt, der durch eine im Innenrohr 12 vorgesehene Bohrung 123 in radialer Richtung aus dem Innenrohr 12 herausragt und mit einem der Löcher 110 im Außenrohr 11 zusammenwirken kann. Gegen die Kraft der Feder 125 kann der Zapfen 126 nach radial innen gedrückt werden (Figur 4), das Innenrohr 12 kann dann relativ zum Außenrohr 11 verschoben werden, wobei der Zapfen 126, wenn er mit einer der Bohrung 110 in Überdeckung kommt, darin einrastet.The seat forming fabric 3 is provided at its opposite edges 31, 31 'with a loop 30, 30', and in the loops 30, 30 'is a stringing bar 20, 20' is added, which are connected to the fabric 3. The clothing rods 20, 20 'engage through a sleeve 17, which is insertable into the inner tube 12. Also, the sleeve 17 is provided with a continuous longitudinal direction L slot 171. In order to telescope the outer tube 11 and the inner tube 12 to each other, in the outer tube 11 in the longitudinal direction L parallel spaced holes 110 are provided ( FIG. 3 ). Inside the inner tube 12, a bow spring 125 is inserted with a pin 126 which projects through a provided in the inner tube 12 bore 123 in the radial direction of the inner tube 12 and can cooperate with one of the holes 110 in the outer tube 11. Against the force of the spring 125, the pin 126 can be pressed radially inward ( FIG. 4 ), the inner tube 12 can then be moved relative to the outer tube 11, wherein the pin 126, when it comes into coincidence with one of the bore 110, snaps into it.

Figuren 8.1 und 8.2 zeigen einen Querschnitt durch das obere Sitzrohr 10. Im Außenrohr 11 sind das Innenrohr 12, die Hülse 17 und die Bespannungsstange 20 so angeordnet, dass die Schlitze 111, 121 und 171 zueinander fluchten. Das Gewebe 3 ist mit einer Schlaufe 30 um die Bespannungsstange 20 herumgelegt. Das freie Ende 32 kann mit der Gewebebahn 3 vernäht oder über einen hier nicht näher dargestellten Klettschluss 33 an dieser befestigt sein. Die Schraube 120 ist in die Gewindebohrung 170 der Hülse 17 eingedreht, durch das Gewebe 3 hindurchgeführt und in eine hier nicht näher dargestellte Durchgangsbohrung in der Bespannungsstange 20 eingesetzt (Figur 8.1), so dass das Gewebe 3 fest mit der Bespannungsstange 20 verbunden ist. Bei der in Figur 8.1 gezeigten Alternative klemmt die Schraube 120 das Gewebe 3 an der Bespannungsstange 20 fest, beziehungsweise drückt selbst auf die Bespannungsstange 20. Die Schraube 120 ist mit ihrem Kopf vollständig in der Bohrung 124 im Innenrohr 12 aufgenommen. Wird das Innenrohr 12 gegenüber dem Außenrohr 11 verschoben, wird über die Hülse 17 die Bespannungsstange 20 entsprechend verschoben, wodurch das Gewebe 3 in den Schlitzen 111, 121, 171 geführt und ebenfalls in Längsrichtung L verschoben wird, ohne dass sich die wirksame Fläche des Gewebes 3 dabei verändert. Seine Lage in den oberen Sitzrohren 10, 10' wird nur entsprechend verändert, die Sitzfläche des Sitzes 4 hingegen nicht. Beim Teleskopieren des oberen Sitzrohres kann also kein Faltenwurf des Gewebes 3 entstehen, sondern es bleibt gespannt. Durch die Verrastung des Innenrohres 12 gegenüber dem Außenrohres 10 mittels des Zapfens 126 ist eine schnelle und werkzeuglose Einstellung der Sitztiefe möglich. Figures 8.1 and 8.2 show a cross section through the upper seat tube 10. In the outer tube 11, the inner tube 12, the sleeve 17 and the stringing bar 20 are arranged so that the slots 111, 121 and 171 are aligned with each other. The fabric 3 is wrapped around the stringing bar 20 with a loop 30. The free end 32 can be sewn to the fabric web 3 or attached via a hook not shown here 33 on this. The screw 120 is screwed into the threaded bore 170 of the sleeve 17, passed through the fabric 3 and inserted into a through hole (not shown here) in the stringing rod 20 (US Pat. Figure 8.1 ), so that the fabric 3 is firmly connected to the stringing bar 20. At the in Figure 8.1 As shown alternative, the screw 120 clamps the fabric 3 to the stringing rod 20, or even presses itself on the stringing rod 20. The screw 120 is completely received with its head in the bore 124 in the inner tube 12. If the inner tube 12 is displaced relative to the outer tube 11, the clothing rod 20 is displaced accordingly via the sleeve 17, whereby the fabric 3 is guided in the slots 111, 121, 171 and likewise displaced in the longitudinal direction L, without the effective area of the fabric 3 changed. Its position in the upper seat tubes 10, 10 'is only changed accordingly, the seat of the seat 4, however, not. When telescoping the upper seat tube so no drape of the fabric 3 can arise, but it remains taut. By locking the inner tube 12 relative to the outer tube 10 by means of the pin 126, a rapid and tool-free adjustment of the seat depth is possible.

Figuren 9 bis 11 zeigen eine Ausführungsform, bei der das obere Sitzrohr 10 stufenlos teleskopierbar ausgestaltet ist. Über einen Schwenkhebel 130 der Klemmeinrichtung 13, dessen Wirkfläche 131 exzentrisch um eine Schwenkachse 132 in eine Spannposition (Figur 9) oder eine entspannte Position bringbar ist, wird ein durch das Außenrohr 11 hindurchgeführter Bolzen 133 auf das Innenrohr 12 gepresst, wodurch das Außenrohr 11 zu dem Innenrohr 12 fixiert wird. Durch Verschwenken des Klemmhebels 130 in seine entspannte Position (nicht gezeigt), wird die kraftschlüssige Verbindung gelöst, und das Innenrohr 12 kann aus dem Außenrohr 11 um die gewünschte Länge herausgezogen werden. Bezugszeichenliste 1 Seitenrahmen 110 Loch 1 Seitenrahmen 111 Schlitz 2 Kreuzstrebe 117 Außenrohrende /Ende 3 Gewebe 120 Schraube 4 Sitz 121 Schlitz 5 Lehne 122 Stopfen 6 Antriebsrad 123 Loch 6' Antriebsrad 124 Loch 7 Lenkrad 125 Bogenfeder/Feder 7' Lenkrad 126 Zapfen 10 oberes Sitzrohr 127 Innenrohrende/Ende 10' oberes Sitzrohr 130 Schwenkhebel 11 Außenrohr 131 Wirkfläche 11' Außenrohr 132 Schwenkachse 12 Innenrohr 133 Bolzen 12' Innenrohr 170 Gewindebohrung 13 Einrichtung/Klemmeinrichtung 171 Schlitz 15 Kreuzstrebengelenk L Längsrichtung 17 Hülse 20 Bespannungsstange 20' Bespannungsstange 30 Schlaufe 30' Schlaufe 31 Kante 31' Kante 32 freies Ende 33 Klettverschluss FIGS. 9 to 11 show an embodiment in which the upper seat tube 10 is designed infinitely telescopically. Via a pivot lever 130 of the clamping device 13, the effective surface 131 eccentrically about a pivot axis 132 in a clamping position ( FIG. 9 ) or a relaxed position can be brought, a guided through the outer tube 11 bolt 133 is pressed onto the inner tube 12, whereby the outer tube 11 is fixed to the inner tube 12. By pivoting the clamping lever 130 in its relaxed position (not shown), the frictional connection is released, and the inner tube 12 can be pulled out of the outer tube 11 by the desired length. <B> LIST OF REFERENCES </ b> 1 page frame 110 holes 1 page frame 111 slot 2 cross strut 117 outer tube end / end 3 tissues 120 screw 4 seat 121 slot 5 backrest 122 stopper 6 drive wheel 123 hole 6 'drive wheel 124 holes 7 steering wheel 125 bow spring / spring 7 'steering wheel 126 cones 10 upper seat tube 127 Inner tube end / end 10 'upper seat tube 130 pivot lever 11 outer tube 131 effective area 11 'outer tube 132 pivot axis 12 inner tube 133 bolts 12 'inner tube 170 threaded hole 13 device / clamping device 171 slot 15 cross strut joint L longitudinal direction 17 sleeve 20 stringing bar 20 'stringing bar 30 loop 30 'loop 31 edge 31 'edge 32 free end 33 Velcro closure

Claims (10)

  1. Folding wheelchair having two side frames (1, 1') which are connected to one another via a cross-strut (2), each have a slit seat tube (10, 10'), have a woven fabric (3) tensioned between them in order to form a surface of a seat (4) and are of identical design, and wherein the woven fabric (3) has loops (30, 30') on two opposite edges (31, 31'), and a cover-retaining rod (20, 20') is accommodated in each of said loops, characterized by the following features:
    a) the seat tubes (10, 10') comprise an outer tube (11, 11') and an inner tube (12, 12'),
    b) the outer tube (11, 11') has a slit (111), which extends in the longitudinal direction (L) and opens out at least into one outer-tube end (117),
    c) the inner tube (12, 12') has a slit (121), which extends in the longitudinal direction (L) and opens out at least into one inner-tube end (127),
    d) each cover-retaining rod (20, 20') is accommodated in an outer tube (11, 11') and opens out into the associated inner tube (12, 12'),
    e) the woven fabric (3) is guided outward from the inner tube (12, 12') and outer tube (11, 11') through the slits (111, 121),
    f) the inner tube (12, 12'), the woven fabric (3) and the cover-retaining rod (20, 20') are connected to one another.
  2. Folding wheelchair according to Claim 1, characterized in that a sleeve (17) provided with a slit (171) which is continuous in the longitudinal direction (L) is arranged between each inner tube (12, 12') and each cover-retaining rod (20, 20').
  3. Folding wheelchair according to Claim 2, characterized in that the sleeve (17) is provided with a threaded bore (170), into which a screw (120) which fixes the woven fabric (3) on the cover-retaining rod (20, 20') can be screwed.
  4. Folding wheelchair according to Claim 3, characterized in that the sleeve (17) and the cover-retaining rod (20, 20') are connected to one another via the screw (120).
  5. Folding wheelchair according to Claim 1 or 3, characterized in that the inner tube (12, 12') is connected to the cover-retaining rod (20, 20').
  6. Folding wheelchair according to one of the preceding claims, characterized in that, at its end which is directed away from the woven fabric (3), the inner tube (12, 12') is closed by a stopper (122).
  7. Folding wheelchair according to one of the preceding claims, characterized in that the outer tube (11, 11') is provided with a plurality of holes (110) which are spaced apart parallel to one another in the longitudinal direction L and each interact with a pin (126), which is arranged in the inner tube (12, 12'), in order to adjust a depth of the seat (4).
  8. Folding wheelchair according to Claim 7, characterized in that the pins (126) can be displaced counter to the force of a spring (125).
  9. Folding wheelchair according to one of Claims 1 to 6, characterized in that the upper seat tubes (10, 10') can be telescoped in a stepless manner.
  10. Folding wheelchair according to Claim 9, characterized by a device (13) which connects the outer tube (11, 11') to the inner tube (12, 12') in a force-fitting and/or frictionally fitting manner.
EP15828735.9A 2014-12-19 2015-12-16 Folding wheelchair Active EP3233013B1 (en)

Applications Claiming Priority (2)

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DE102014019679.8A DE102014019679B4 (en) 2014-12-19 2014-12-19 folding wheelchair
PCT/DE2015/100538 WO2016095908A1 (en) 2014-12-19 2015-12-16 Folding wheelchair

Publications (2)

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EP3233013A1 EP3233013A1 (en) 2017-10-25
EP3233013B1 true EP3233013B1 (en) 2019-02-13

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US (1) US10524970B2 (en)
EP (1) EP3233013B1 (en)
CN (1) CN107205872B (en)
BR (1) BR112017012734B1 (en)
DE (1) DE102014019679B4 (en)
RU (1) RU2692200C2 (en)
TR (1) TR201903818T4 (en)
WO (1) WO2016095908A1 (en)

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US10828213B1 (en) 2017-07-07 2020-11-10 Ki Mobility, LLC Foldable tiltable wheelchair and frame therefor
CN112972148A (en) * 2021-02-02 2021-06-18 王新爱 Traditional chinese medical science rehabilitation and health care nursing bed chair

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BR112017012734A2 (en) 2018-01-02
RU2017125505A (en) 2019-01-21
US20170348168A1 (en) 2017-12-07
RU2692200C2 (en) 2019-06-21
DE102014019679A1 (en) 2016-06-23
BR112017012734B1 (en) 2021-03-30
CN107205872A (en) 2017-09-26
CN107205872B (en) 2019-02-26
TR201903818T4 (en) 2019-04-22
EP3233013A1 (en) 2017-10-25
US10524970B2 (en) 2020-01-07
RU2017125505A3 (en) 2019-04-15
DE102014019679B4 (en) 2018-01-11
WO2016095908A1 (en) 2016-06-23

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