EP2758016A1 - Wheelchair comprising a height-adjustable and incline-adjustable seat - Google Patents

Wheelchair comprising a height-adjustable and incline-adjustable seat

Info

Publication number
EP2758016A1
EP2758016A1 EP12770417.9A EP12770417A EP2758016A1 EP 2758016 A1 EP2758016 A1 EP 2758016A1 EP 12770417 A EP12770417 A EP 12770417A EP 2758016 A1 EP2758016 A1 EP 2758016A1
Authority
EP
European Patent Office
Prior art keywords
seat
tubes
seat frame
wheelchair
frame
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.)
Granted
Application number
EP12770417.9A
Other languages
German (de)
French (fr)
Other versions
EP2758016B1 (en
Inventor
Heinrich Perk
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
Original Assignee
Otto Bock Mobility Solutions 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 Mobility Solutions GmbH filed Critical Otto Bock Mobility Solutions GmbH
Publication of EP2758016A1 publication Critical patent/EP2758016A1/en
Application granted granted Critical
Publication of EP2758016B1 publication Critical patent/EP2758016B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • 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
    • 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
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards
    • 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
    • A61G5/14—Standing-up or sitting-down aids
    • 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

Abstract

The invention relates to a wheelchair which comprises: a underframe (1) to which front steerable wheels (6) and rear drive wheels (7) are fixed at a distance from one another; a seating frame (3) which is height-adjustably fixed to said underframe (1), mounted so as to be able to pivot about a rotational axis (D), and which can be incline-adjusted with regard to the horizontal line (H) as well as height-adjusted; and a backrest frame which is connected to the seating frame (3) consisting of two longitudinal tubes (9) lying opposite each other and at least one transverse tube (10) which interconnects these longitudinal tubes (9); a) said seating frame (3) being connected to the underframe (1) by means of at least two telescopic tubes (2) each formed from one lower (2b) and one upper (2a) tube; b) the lower ends of these lower tubes (2b) being rigidly fixed to said underframe (1), and the invention being characterised in that: c) the upper ends of the upper tubes (2a) are connected to the seating frame (3) in the rotational axis (D); d) a detent plate (14) is arranged on each of the longitudinal tubes (9) and connected to the upper tubes (2a), for the purpose of adjusting the incline of the seating frame (3); and e) the rotational axis (D) is provided above said seating frame (3).

Description

Rollstuhl mit in der Höhe und Neigung verstellbarem Sitz  Wheelchair with adjustable height and inclination seat
Die Erfindung betrifft einen Rollstuhl mit einem Untergestell, an dem vordere Lenkräder und hintere Antriebsräder im Abstand zueinander befestigt sind, einem am Untergestell höhenverstellbar befestigten Sitzrahmen, der um eine Drehachse schwenkbar gelagert und in seiner Neigung gegenüber der Horizontalen und seiner Höhe einstellbar ist, und einem mit dem aus zwei sich gegenüberliegenden Längsrohren und mindestens einem, die Längsrohre miteinander verbindenden Querrohr bestehenden Sitzrahmen verbundenen Rückenlehnenrahmen, wobei der Sitzrahmen über mindestens zwei aus je einem unteren und einem oberen Rohr gebildeten Teleskoprohren mit dem Untergestell verbunden ist, und die unteren Enden der unteren Rohre starr am Untergestell befestigt sind. The invention relates to a wheelchair with a base frame, are secured to the front steering wheels and rear drive wheels spaced from each other, a height adjustable attached to the frame seat frame, which is pivotally mounted about a rotation axis and adjustable in its inclination to the horizontal and its height, and a the seat frame is connected via at least two telescopic tubes formed from a respective lower and an upper tube to the base frame, and the lower ends of the lower tubes are fixed rigidly to the base frame.
Ein solcher Rollstuhl ist beispielsweise aus der US 5,884,928 A bekannt. Such a wheelchair is known for example from US 5,884,928 A.
Auch aus der DE 10 2009 049 536 A1 ist ein Rollstuhl bekannt, bei dem der Sitz in der Höhe und Neigung verstellbar ist. Der Sitzrahmen dient zur Aufnahme von Sitzschalen oder orthopädischen Sitzen (die in folgendem Text synonym zu verstehen sind) und bildet zusammen mit diesen das Sitzsystem für Personen, die aufgrund einer Behinderung nicht selbstständig sitzen können. Sitzschalen und orthopädische Sitze werden für diese Personen individuell angefertigt, weil sie in der Regel über starke körperliche Einschränkungen verfügen. Das Sitzsystem soll eventuell vorliegende Deformationen des Skeletts ausgleichen (beispielsweise das Becken horizontal ausrichten). Wie bei allen sitzenden Personen wird das Körpergewicht größtenteils im Sitzbeinbereich abgefangen. Bei Personen mit Bewegungseinschränkungen kann die andauernde Druckbelastung zu A wheelchair is also known from DE 10 2009 049 536 A1, in which the seat is adjustable in height and inclination. The seat frame is used to accommodate seats or orthopedic seats (which are to be understood in the following text synonymous) and forms together with these the seating system for people who can not sit on their own due to a disability. Seats and orthopedic seats are custom made for these individuals because they usually have severe physical limitations. The seating system should compensate for any deformations of the skeleton (for example, align the pelvis horizontally). As with all seated persons, the body weight is mostly intercepted in the seatbone area. In persons with restricted mobility, the continuous pressure load can
BESTÄTIGUNGSKOPIE Dekubitus führen. Zur Reduzierung der Dekubitusgefahr muss das Körpergewicht auf einer größeren Auflagefläche verteilt werden. Dies wird durch die Neigung des Sitzsystemes erreicht, wobei die Neigung des Sitz- systemes durch eine Neigung des Sitzrahmens eingestellt wird. CONFIRMATION COPY Pressure ulcers lead. To reduce the pressure ulcer risk, the body weight must be distributed over a larger contact surface. This is achieved by the inclination of the seat system, wherein the inclination of the seat system is adjusted by an inclination of the seat frame.
Insbesondere wenn der einstellbare Bereich der Neigung groß wird, beispielsweise bis zu 50°, und das Gewicht der das Sitzsystem benutzenden Person hoch ist, ist es erforderlich, dass die Betätigungskräfte bei einer Neigungsänderung niedrig sind, um einer Hilfsperson die optimale Einstellung zu erleichtern. Der einfachste Weg die Betätigungskräfte zu reduzieren, ist eine Verlagerung der Drehachse in den gemeinsamen Schwerpunkt von Sitzsystem und Benutzer (Patient). In particular, when the adjustable range of the inclination becomes large, for example, up to 50 °, and the weight of the person using the seat system is high, it is required that the operating forces are low at a change in inclination to facilitate an optimal setting for an assistant. The easiest way to reduce the actuation forces is to shift the axis of rotation to the common center of gravity of the seat system and user (patient).
Bei dem aus der US 2009/0045599 A1 bekannten Rollstuhl ist die Drehachse des Sitzsystems in der Nähe des Schwerpunktes des Benutzers vorgesehen, um Neigungswinkel des Sitzsystemes von bis zu 50° zu realisieren. Dieser Rollstuhl ist konstruktiv sehr aufwendig. Über einen Teleskopzylinder kann zwar die Verstellbarkeit des Sitzsystemes bzw. des Sitzrahmens erleichtert werden, die damit verbundene Mechanik verteuert den Rollstuhl, erhöht sein Gewicht, wodurch die Handling-Eigenschaften verschlechtert werden, und ist außerdem störanfällig. In the wheelchair known from US 2009/0045599 A1, the axis of rotation of the seat system is provided near the center of gravity of the user, in order to realize tilt angles of the seat system of up to 50 °. This wheelchair is structurally very expensive. Although the adjustability of the seat system or of the seat frame can be facilitated by means of a telescopic cylinder, the mechanics associated therewith make the wheelchair more expensive, increase its weight, as a result of which the handling properties are impaired, and are also prone to failure.
Aus der DE 89 08 374 ist eine Wechselvorrichtung für einen mit einem Untergestell verbindbaren Sitz bekannt. Dieses Untergestell kann ein Kinderwagen oder ein Rollstuhl für Kinder sein. Hierzu ist der Sitz um 180° verdreht montierbar, sodass die Blickrichtung der vom Sitz aufgenommenen Person entweder nach vorn oder nach hinten gerichtet ist. Der Sitz wird über einen verstellbaren Sicherungsriegel an dem Untergestell befestigt. From DE 89 08 374 a changing device for a connectable to a base seat is known. This base can be a stroller or a wheelchair for children. For this purpose, the seat is rotated by 180 ° mountable, so that the viewing direction of the seated person either forward or backward. The seat is attached to the underframe via an adjustable locking latch.
Die US 2,986,200 offenbart einen Rollstuhl, bei dem der Sitz von einer vertikalen in eine horizontale Lage verschwenkt werden kann, um behin- derte Personen nicht nur sitzend, sondern auch liegend transportieren zu können. In der horizontalen Lage kann der Sitz die Funktion eines Bettes übernehmen. US 2,986,200 discloses a wheelchair in which the seat can be pivoted from a vertical to a horizontal position in order to prevent not only sitting persons, but also being able to transport lying down. In the horizontal position, the seat can take over the function of a bed.
Aus der DE 10 2004 045 388 B4 ist ein Elektrorollstuhl bekannt, bei dem der Sitz in seiner Neigung selbsttätig so einstellbar ist, dass der Sitz auch bei Berg- oder Talfahrt immer in der Horizontalen verbleibt. Hierzu sind am Fahrersitz zwei Führungsschienen befestigt, die jeweils in vier fahrgestellfesten Rollen gelagert sind. Fährt das Fahrzeug bergab, wird der Sitz um einen virtuellen Drehpunkt geschwenkt, der sich in der Nähe des Massendrehpunktes einer auf dem Sitz sitzenden Person befindet. From DE 10 2004 045 388 B4 an electric wheelchair is known, in which the seat is automatically adjustable in its inclination so that the seat always remains in the horizontal even when driving uphill or downhill. For this purpose, two guide rails are attached to the driver's seat, which are each mounted in four chassis-fixed roles. As the vehicle drifts downhill, the seat is pivoted about a virtual fulcrum near the center fulcrum of a person sitting on the seat.
Von dieser Problemstellung ausgehend soll der eingangs beschriebene Rollstuhl so verbessert werden, dass er nicht nur konstruktiv einfach aufgebaut ist und ein niedriges Gewicht aufweist, sondern auch eine leichte Einstellung der Neigung des Sitzsystemes ermöglicht. Based on this problem, the wheelchair described at the outset is to be improved so that it is not only structurally simple and has a low weight, but also allows easy adjustment of the inclination of the seat system.
Zur Problemlösung zeichnet sich ein gattungsgemäßer Rollstuhl dadurch aus, dass die oberen Enden der oberen Rohre mit dem Sitzrahmen in der Drehachse verbunden sind und zur Einstellung der Neigung des Sitzrahmens an den Längsrohren je ein Rastblech befestigt ist, das mit den oberen Rohren in Verbindung steht, und dass die Drehachse oberhalb des Sitzrahmens vorgesehen ist. To solve the problem, a generic wheelchair is characterized in that the upper ends of the upper tubes are connected to the seat frame in the axis of rotation and is fixed to adjust the inclination of the seat frame to the longitudinal tubes depending on a locking plate, which communicates with the upper tubes, and that the rotation axis is provided above the seat frame.
Durch die beiden Teleskoprohre ist die Höhe des Sitzrahmens leicht - und insbesondere auch manuell - einstellbar. Dadurch, dass die oberen Rohre mit dem Sitzrahmen in der Drehachse verbunden sind, liegt der Schwenkpunkt des Sitzrahmens über seinem Schwerpunkt, wodurch es möglich wird, die Schwenkachse des Sitzsystems in die Nähe des Gesamtschwerpunktes, der aus dem Schwerpunkt des Sitzsystems und dem Schwerpunkt des Benutzers gebildet wird, zu liegen. Durch das Rastblech, das vorzugsweise eine kreisbogenförmig verlaufende Rastung mit einem Ra- dius aufweist, der dem Wirkabstand des Rastbolzens zur Drehachse entspricht, kann die Neigung eingestellt werden. Um die Neigung in Stufen einstellen zu können, weisen die Rastbleche eine Rastung auf. Der Abstand der Rastbohrungen zueinander bestimmt die Stufen der Einstellbarkeit. Through the two telescopic tubes, the height of the seat frame is easily - and especially manually - adjustable. Characterized in that the upper tubes are connected to the seat frame in the axis of rotation, the pivot point of the seat frame is above its center of gravity, which makes it possible, the pivot axis of the seating system in the vicinity of the center of gravity, from the center of gravity of the seating system and the center of gravity of the user is formed to lie. By the latching plate, which preferably has a circular arc-shaped detent with a Ra has dius, which corresponds to the effective distance of the locking bolt to the axis of rotation, the inclination can be adjusted. In order to adjust the inclination in stages, the locking plates have a detent. The distance between the locking holes to each other determines the levels of adjustability.
Vorzugsweise ist auf jedem Längsrohr eine nach oben ragende Sitzlasche in Längsrichtung verschiebbar gelagert, deren oberes Ende in der Drehachse mit dem oberen Rohr verbunden ist. Preferably, an upwardly projecting seat flap is slidably mounted in the longitudinal direction on each longitudinal tube, whose upper end is connected in the axis of rotation with the upper tube.
Um die Einstellbarkeit der Sitzlasche und damit die Verschiebbarkeit des Schwerpunktes in horizontaler Lage zu erleichtern, sind die Sitzlaschen vorzugsweise auf den Längsrohren stufenlos verschiebbar gelagert. Zur Fixierung sind die Sitzlaschen vorzugsweise formschlüssig mit den Längsrohren verklemmbar. In order to facilitate the adjustability of the seat flap and thus the displaceability of the center of gravity in a horizontal position, the seat tabs are preferably mounted on the longitudinal tubes continuously displaceable. For fixing the seat straps are preferably clamped form-fitting manner with the longitudinal tubes.
Um die Stabilität des Rollstuhles an die Veränderung der Lage des Gesamtschwerpunktes anpassen zu können, ist der Abstand zwischen Lenkrädern und Antriebsrädern (Radstand), insbesondere stufenlos einstellbar. In order to adjust the stability of the wheelchair to the change in the position of the center of gravity, the distance between the steering wheels and drive wheels (wheelbase), in particular continuously adjustable.
Die Teleskoprohre sind bevorzugt in Stufen teleskopierbar. The telescopic tubes are preferably telescopic in stages.
Um den Sitzrahmen an die Breite der Sitzschale bzw. des Sitzes anpassen zu können, ist das mindestens eine Querrohr teleskopierbar ausgebildet. In order to adapt the seat frame to the width of the seat or the seat, the at least one cross tube is formed telescopic.
Die in den Sitzrahmen einsetzbare Sitzschale (bzw. der Sitz) bilden zusammen mit dem Sitzrahmen und dem Rückenlehnenrahmen das Sitzsystem. Der Gesamtschwerpunkt, der sich aus dem Schwerpunkt des Sitzsystems und dem Schwerpunkt einer im Sitzsystem sitzenden Person zusammensetzt, liegt zumindest in unmittelbarer Nähe, vorzugsweise auf, der Drehachse. Mit Hilfe einer Zeichnung soll ein Ausführungsbeispiel der Erfindung näher beschrieben werden. Es zeigen: The seat shell (or the seat) that can be used in the seat frame together with the seat frame and the backrest frame form the seating system. The total center of gravity, which is composed of the center of gravity of the seat system and the center of gravity of a person sitting in the seat system, is at least in the immediate vicinity, preferably on the axis of rotation. With the aid of a drawing, an embodiment of the invention will be described in detail. Show it:
Figur 1 - Die perspektivische Darstellung des Rollstuhles ohne Sitzsystem; Figure 1 - The perspective view of the wheelchair without seating system;
Figur 2 - eine andere perspektivische Darstellung des Rollstuhls nach Figure 2 - another perspective view of the wheelchair after
Figur 1 ;  FIG. 1;
Figur 3 - eine Teildarstellung des Rollstuhls nach Figur 1 ; Figure 3 - a partial view of the wheelchair of Figure 1;
Figur 4 - eine perspektivische Explosionsdarstellung des Rollstuhls; Figure 4 - an exploded perspective view of the wheelchair;
Figur 5 - eine Teildarstellung des Rollstuhls nach Figur 4; Figure 5 - a partial view of the wheelchair of Figure 4;
Figur 6 - eine Einzelheit aus Figur 5; Figure 6 - a detail of Figure 5;
Figur 7 - eine weitere Teildarstellung des Rollstuhls; Figure 7 - another partial view of the wheelchair;
Figur 7a - eine Einzelheit zur Darstellung der Verrastung nach Figur 7; Figure 7a - a detail to illustrate the locking of Figure 7;
Figur 8 - eine Teilexplosionsdarstellung des Rollstuhls; FIG. 8 is a partial exploded view of the wheelchair;
Figur 9 - eine Einzelheit aus Figur 8; Figure 9 - a detail of Figure 8;
Figur 10 - eine Einzelheit in Explosionsdarstellung; Figure 10 - a detail in exploded view;
Figur 11 - den Rollstuhl mit Sitzsystem und Benutzer; Figure 11 - the wheelchair with seating system and user;
Figur 12 eine Einzelheit des Rollstuhls in Explosionsdarstellung; Figure 12 is a detail of the wheelchair in an exploded view;
Figur 13 den Schnitt entlang der Linie XIII - XIII nach Figur 1 zur Dar- Stellung der Verstellmechanik für die Sitzneigung; FIG. 13 shows the section along the line XIII-XIII according to FIG. Position of the adjustment mechanism for the seat inclination;
Figur 14 die Darstellung gemäß Figur 13 in geneigter Lage (entriegelte Ver-stellmechanik); FIG. 14 shows the illustration according to FIG. 13 in an inclined position (unlocked adjusting mechanism);
Figur 15 eine Seitenansicht des Rollstuhls; Figure 15 is a side view of the wheelchair;
Figur 16 eine vergrößerte Darstellung aus Figur 13 (verriegelte Verstellme- chanik); FIG. 16 an enlarged view from FIG. 13 (locked adjustment mechanism);
Figur 17 eine vergrößerte Darstellung aus Figur 14; Figure 17 is an enlarged view of Figure 14;
Figur 18 die Darstellung der Sitzbefestigung. Figure 18, the representation of the seat attachment.
Der Rollstuhl besteht aus dem Untergestell 1 und dem über die Teleskoprohre 2 verbundenen Sitzrahmen 3, in den die Sitzschale 4 eingesetzt ist. An sich in Längsrichtung L erstreckenden Rohren 5 des Untergestells 1 sind die beiden vorderen Lenkräder 6 und die beiden hinteren Antriebsrä- der 7 befestigt. Die Antriebsräder 7 sind über Klemmlaschen 8 an den Rohren 5 befestigt, und der Abstand in Längsrichtung L zwischen einem Lenkrad 6 und einem Antriebsrad 7, also der Radstand, ist stufenlos einstellbar, indem die Klemmlasche 8 gelöst und auf dem Rohr 5 in die gewünschte Richtung verschoben und wieder festgezogen wird (vgl. Figur 6). The wheelchair consists of the base frame 1 and the seat frame 3 connected via the telescopic tubes 2, in which the seat shell 4 is inserted. At longitudinally extending L tubes 5 of the undercarriage 1, the two front steering wheels 6 and the two rear drive wheels 7 are attached. The drive wheels 7 are fastened via clamping straps 8 to the tubes 5, and the distance in the longitudinal direction L between a steering wheel 6 and a drive wheel 7, so the wheelbase is infinitely adjustable by the clamping plate 8 is released and on the tube 5 in the desired direction is moved and tightened again (see Figure 6).
Der Sitzrahmen 3 besteht aus den beiden sich gegenüberliegenden Längsrohren 9 und den beiden sich im rechten Winkel quer hierzu erstreckenden, die Längsrohre 9 miteinander verbindenden Querrohren 10. Die Querrohre 10 bestehen aus den mit den Längsrohren 9 verschweißten äußeren Rohren 10b, in die ein inneres Rohr 10a einsteckbar und verschraubbar ist. Untere Querrohre 10 verbinden in der gleichen Art und Weise die unteren Längsrohre 5 des Untergestells 1. An den Längsrohren 9 stufenlos verschiebbar befestigt sind zwei Sitzlaschen 11. Die Sitzlaschen 11 erstrecken sich vertikal nach oben und nehmen an ihrem oberen Ende die Armlehnen 12 auf. Das obere Rohr 2a der Teleskoprohre 2 ist oberhalb des Sitzrahmens 3 in der Drehachse D schwenkbar am oberen Ende der Sitzlasche 1 befestigt. Das unter Rohr 2b der Teleskoprohre 2 ist starr mit den Längsrohren 5 des Untergestells 1 verbunden. Der Sitz 4 ist auf den Sitzrohren 9 über Laschen 30, 31 befestigt (vgl. Figur 18). Die Laschen 30, 31 sind mit der Unterseite des Sitzes 4 verschraubt. Ihre den Längsrohren 9 zugewandten Enden sind im rechten Winkel nach unten abgebogen. Die mit dem Sitz befestigten Enden weisen Langlöcher 32, 33 auf, sodass die Laschen 30, 31 stufenlos in ihrer relativen Lage zu den Längsrohren 9 angepasst werden können. Individuell an den Benutzer angepasste Sitze 4 können somit einfach an den Sitzrahmen 3 angepasst und an diesem befestigt werden. Der Sitz 4 besteht in üblicher Weise aus der Sitzfläche 4a, auf der der Benutzer sitzt, und der Sitzlehne 4b, die seinen Rücken abstützt. Zur seitlichen Abstützung können an der Sitzfläche 4a und der Sitzlehne 4b Seitenwangen vorgesehen sein (vgl. Figur 11). Die Drehachse D befindet sich folglich oberhalb der Sitzfläche 4a. The seat frame 3 consists of the two opposite longitudinal tubes 9 and the two at right angles extending transversely thereto, the longitudinal tubes 9 interconnecting transverse tubes 10. The transverse tubes 10 consist of welded to the longitudinal tubes 9 outer tubes 10b, in which an inner tube 10a can be inserted and screwed. Lower cross tubes 10 connect in the same manner, the lower longitudinal tubes 5 of the undercarriage 1. On the longitudinal tubes 9 continuously slidably mounted are two seat brackets 11. The seat brackets 11 extend vertically upwards and take at their upper end to the armrests 12. The upper tube 2a of the telescopic tubes 2 is pivotally mounted above the seat frame 3 in the axis of rotation D at the upper end of the seat flap 1. The under tube 2b of the telescopic tubes 2 is rigidly connected to the longitudinal tubes 5 of the undercarriage 1. The seat 4 is fastened on the seat tubes 9 via tabs 30, 31 (compare FIG. The tabs 30, 31 are bolted to the underside of the seat 4. Your the longitudinal tubes 9 facing ends are bent at right angles down. The ends secured to the seat have slots 32, 33, so that the tabs 30, 31 can be adjusted continuously in their relative position to the longitudinal tubes 9. Individually adapted to the user seats 4 can thus be easily adapted to the seat frame 3 and secured thereto. The seat 4 consists in the usual way of the seat 4a, on which the user sits, and the seat back 4b, which supports his back. For lateral support, side cheeks may be provided on the seat surface 4a and the seat back 4b (see FIG. The rotation axis D is therefore located above the seat surface 4a.
An den Längsrohren 9 des Sitzrahmens 3 ist je ein Rastblech 14 vorgesehen das eine kreisbogenförmig verlaufende Rastung 15 aufweist. Die Rastbleche 14 sind zusammen mit den Sitzlaschen 11 in Längsrichtung L auf den Längsrohren 9 stufenlos verschiebbar und formschlüssig festklemmbar. Der Radius R des Kreisbogens der zueinander beabstande- ten Bohrungen 15a, die die Rastung 15 bilden, entspricht dem Wirkabstand von der Drehachse D zum Rastbolzen 21 , der am oberen Rohr 2a befestigt ist und mit der Rastung 15 zusammenwirkt. Am hinteren Ende des Sitzrahmens 3 ist der Rückenlehnenrahmen vorgesehen, der aus den beiden Rohren 18 gebildet wird, an deren oberen Ende Schiebegriffe 19 vorgesehen sind. Vorne an den Längsrohren 9 sind die Fußstützen 20 befestigt. Die unteren Rohre 2b der Teleskoprohre 2 sind seitlich mit einer Mehrzahl parallel zueinander beabstandeten Bohrungen 2' versehen. Die oberen Rohre 2a weisen seitliche Bohrungen 2" auf. Über eine lösbare Schraubverbindung kann über die Bohrungen 2', 2" die Länge der Teleskoprohre 2 und damit die Höhe des Sitzrahmens 3 eingestellt werden. On the longitudinal tubes 9 of the seat frame 3, a detent plate 14 is provided which has a circular arc-shaped detent 15. The detent plates 14, together with the seat brackets 11 in the longitudinal direction L on the longitudinal tubes 9 continuously slidably and positively clamped. The radius R of the circular arc of spaced holes 15 a, 15 form the detent corresponds to the effective distance from the axis of rotation D to the locking pin 21 which is fixed to the upper tube 2 a and cooperates with the detent 15. At the rear end of the seat frame 3, the backrest frame is provided, which is formed from the two tubes 18, at the upper end of push handles 19 are provided. At the front of the longitudinal tubes 9, the footrests 20 are attached. The lower tubes 2b of the telescopic tubes 2 are laterally provided with a plurality of mutually parallel holes 2 '. The upper tubes 2a have lateral bores 2 ", and the length of the telescopic tubes 2 and thus the height of the seat frame 3 can be set via a detachable screw connection via the bores 2 ', 2".
Die Einstellung des Neigungswinkels α des Sitzrahmens 3 erfolgt wie folgt: The adjustment of the inclination angle α of the seat frame 3 is as follows:
Unterhalb der vorderen Querstange 10 ist ein Rohr 17 angeordnet, das im Bereich seiner beiden äußeren Enden je einen federbelasteten Rastbolzen 21 aufweist (vgl. Figuren 7, 7a). Die Rastbolzen 21 sind in Richtung des Pfeiles gegen die Kraft der Feder 22 verschiebbar. Zur Einstellung der Sitzneigung ist ein von der Bedienperson betätigbares Auslösepedal 23 vorgesehen, das über eine Hebel-Mechanik 24 mit dem Flansch 25 verbunden ist, über den die Bewegung auf die in Figur 12 detailliert dargestellte Verriegelungseinrichtung übertragen wird. Beim Treten des Auslösepedals 23 wird der Verriegelungsbolzen 21 gegen die Kraft der Feder 22 verschoben und aus der Bohrung 15a des Rastblechs 14 herausbewegt. Der Sitz 4 kann dann in seiner Neigung verstellt werden. Wird das Betätigungspedal 23 entlastet, federt der Rastbolzen 21 in seine Ausgangslage zurück und rastet, wenn er in Überdeckung mit der gewünschten Bohrung 15a gelangt, wieder ein, und der Sitz 4 ist im gewünschten Winkel α in seiner Neigung fixiert. Below the front cross bar 10, a tube 17 is arranged, which has a spring-loaded locking pin 21 in the region of its two outer ends (see Figures 7, 7a). The locking pins 21 are displaceable in the direction of the arrow against the force of the spring 22. To adjust the seat inclination actuatable by the operator triggering pedal 23 is provided, which is connected via a lever mechanism 24 with the flange 25, via which the movement is transmitted to the locking device shown in detail in Figure 12. Upon entering the release pedal 23, the locking pin 21 is moved against the force of the spring 22 and moved out of the bore 15 a of the locking plate 14. The seat 4 can then be adjusted in its inclination. If the operating pedal 23 is relieved, the locking pin 21 springs back into its starting position and locks when it comes into coincidence with the desired bore 15a, again, and the seat 4 is fixed at the desired angle α in its inclination.
Die Querrohre 10 des Sitzrahmens 3 sind zur Einstellung der Breite te- leskopierbar. Die äußeren Rohre 10b sind mit dem inneren Rohr 10a verschraubt. Der Rückenlehnenrahmen wird gebildet durch die beiden Rohre 18, die mit den Längsrohren 9 des Sitzrahmens 3 verbunden sind. Bezugszeichenliste The transverse tubes 10 of the seat frame 3 are telescopic to adjust the width. The outer tubes 10b are bolted to the inner tube 10a. The backrest frame is formed by the two tubes 18, which are connected to the longitudinal tubes 9 of the seat frame 3. LIST OF REFERENCE NUMBERS
1 Untergestell1 base
2 Teleskoprohr2 telescopic tube
2a oberes Rohr2a upper tube
2b unteres Rohr2b lower tube
2' Bohrung2 'bore
2" Bohrung2 "hole
3 Sitzrahmen3 seat frame
4 Sitzschale/Sitz4 seat shell / seat
4a Sitzfläche4a seat
4b Sitzlehne4b seat back
5 Längsrohr5 longitudinal tube
6 Lenkrad6 steering wheel
7 Antriebsrad7 drive wheel
8 Klemmlasche8 clamping strap
9 Längsrohr9 longitudinal tube
10a inneres Rohr10a inner tube
10b äußeres Rohr10b outer tube
10' Bohrung10 'bore
11 Sitzlasche11 seat flap
12 Armlehne12 armrest
14 Rastblech14 detent plate
15 Rastung15 detent
15a Bohrung15a hole
17 Rohr 17 pipe
18 Rohr  18 pipe
19 Schiebegriff 19 push handle
20 Fußstütze20 footrest
21 Rastbolzen21 stop bolts
22 Druckfeder22 compression spring
23 Auslösepedal23 release pedal
24 Hebel-Mechanik 5 Flansch 24 lever mechanism 5 flange
30 Lasche  30 tab
31 Lasche  31 tab
32 Langloch 33 Langloch 32 slot 33 slot
D DrehachseD rotation axis
H HorizontaleH horizontal
L LängsrichtungL longitudinal direction
R Radius α Neigungswinkel R radius α inclination angle

Claims

Patentansprüche claims
Rollstuhl mit einem Untergestell (1), an dem vordere Lenkräder (6) und hintere Antriebsräder (7) im Abstand zueinander befestigt sind, einem am Untergestell (1) höhenverstellbar befestigten Sitzrahmen (3), der um eine Drehachse (D) schwenkbar gelagert und in seiner Neigung gegenüber der Horizontalen (H) und in seiner Höhe einstellbar ist, und einem mit dem aus zwei sich gegenüberliegenden Längsrohren (9) und mindestens einem, die Längsrohre (9) miteinander verbindenden Querrohr (10) bestehenden Sitzrahmen (3) verbundenen Rückenlehnenrahmen, wobei der Sitzrahmen (3) über mindestens zwei aus je einem unteren (2b) und einem oberen (2a) Rohr gebildeten Teleskoprohren (2) mit dem Untergestell (1) verbunden ist, Wheelchair with a base (1) to the front steering wheels (6) and rear drive wheels (7) are mounted at a distance to one another on the underframe (1) height-adjustable seat frame (3) pivotally mounted about an axis of rotation (D) and is adjustable in its inclination relative to the horizontal (H) and in its height, and a backrest frame connected to the seat frame (3) consisting of two opposite longitudinal tubes (9) and at least one transverse tube (10) interconnecting the longitudinal tubes (9) wherein the seat frame (3) is connected to the underframe (1) via at least two telescopic tubes (2) formed from a respective lower (2b) and an upper (2a) tube,
die unteren Enden der unteren Rohre (2b) starr am Untergestell (1) befestigt sind, dadurch gekennzeichnet, dass c) die oberen Enden der oberen Rohre (2a) mit dem Sitzrahmen (3) in der Drehachse (D) verbunden sind,  the lower ends of the lower tubes (2b) are fixed rigidly to the underframe (1), characterized in that c) the upper ends of the upper tubes (2a) are connected to the seat frame (3) in the axis of rotation (D),
d) zur Einstellung der Neigung des Sitzrahmens (3) an den Längsrohren (9) je ein Rastblech (14) angeordnet ist, das mit den oberen Rohren (2a) in Verbindung steht, und  d) for adjusting the inclination of the seat frame (3) on the longitudinal tubes (9) each a latching plate (14) is arranged, which is in communication with the upper tubes (2 a), and
e) die Drehachse (D) oberhalb des Sitzrahmens (3) vorgesehen ist.  e) the axis of rotation (D) above the seat frame (3) is provided.
Rollstuhl nach Anspruch 1 , dadurch gekennzeichnet, dass auf jedem Längsrohr (9) eine nach oben ragende Sitzlasche (11) in Längsrichtung (L) verschiebbar gelagert ist, deren oberes Ende in der Drehachse (D) mit dem oberen Rohr (2a) verbunden ist. Rollstuhl nach Anspruch 2, dadurch gekennzeichnet, dass die Sitzlaschen (11) auf den Längsrohren (9) stufenlos verschiebbar gelagert sind. Wheelchair according to claim 1, characterized in that on each longitudinal tube (9) an upwardly projecting seat flap (11) is displaceably mounted in the longitudinal direction (L) whose upper end in the axis of rotation (D) is connected to the upper tube (2a) , Wheelchair according to claim 2, characterized in that the seat straps (11) are mounted continuously displaceably on the longitudinal tubes (9).
Rollstuhl nach Anspruch 3, dadurch gekennzeichnet, dass die Sitzlaschen (11) auf den Längsrohren (9) formschlüssig verklemmbar sind. Wheelchair according to claim 3, characterized in that the seat straps (11) on the longitudinal tubes (9) are positively clamped.
Rollstuhl nach Anspruch 1 , dadurch gekennzeichnet, dass der Abstand zwischen den Lenkrädern (6) und den Antriebsrädern (7) einstellbar ist. Wheelchair according to claim 1, characterized in that the distance between the steering wheels (6) and the drive wheels (7) is adjustable.
Rollstuhl nach Anspruch 5, dadurch gekennzeichnet, dass der Abstand stufenlos einstellbar ist. Wheelchair according to claim 5, characterized in that the distance is infinitely adjustable.
Rollstuhl nach Anspruch 1 , dadurch gekennzeichnet, dass die Teleskoprohre (2) in Stufen teleskopierbar sind. Wheelchair according to claim 1, characterized in that the telescopic tubes (2) are telescopic in stages.
Rollstuhl nach Anspruch 1 , dadurch gekennzeichnet, dass dieWheelchair according to claim 1, characterized in that the
Rastbleche (14) eine kreisbogenförmig verlaufende Rastung (15) mit einem Radius (R) aufweisen, die dem Wirkabstand von der Drehachse (D) zum Rastbolzen (21) entsprechen. Locking plates (14) have a circular arc-shaped detent (15) having a radius (R) corresponding to the effective distance from the axis of rotation (D) to the locking pin (21).
Rollstuhl nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Querrohr (10) zur Einstellung der Breite des Sitzrahmens (3) teleskopierbar ist. Wheelchair according to claim 1, characterized in that the at least one transverse tube (10) for adjusting the width of the seat frame (3) is telescopic.
Rollstuhl nach Anspruch 1 , dadurch gekennzeichnet, dass in denWheelchair according to claim 1, characterized in that in the
Sitzrahmen (3) eine Sitzschale (4) einsetzbar ist, die zusammen mit dem Sitzrahmen (3) und dem Rückenlehnenrahmen ein Sitzsystem bildet, und dass ein Gesamtschwerpunkt, der sich aus einem Schwerpunkt des Sitzsystems und einem Schwerpunkt einer in der Sitzschale sitzenden Person zusammensetzt, zumindest in unmittelbarer Nähe, vorzugsweise auf, der Drehachse (D) liegt. Seat frame (3) is a seat shell (4) is used, which forms a seating system together with the seat frame (3) and the seat back frame, and that an overall center of gravity, consisting of a focus of the seating system and a center of gravity in the Seat shell sitting person composed, at least in the immediate vicinity, preferably on, the axis of rotation (D) is located.
EP12770417.9A 2011-09-19 2012-09-17 Wheelchair comprising a height-adjustable and incline-adjustable seat Active EP2758016B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011117671.7A DE102011117671B4 (en) 2011-09-19 2011-09-19 Wheelchair with adjustable height and inclination seat
PCT/EP2012/003882 WO2013041201A1 (en) 2011-09-19 2012-09-17 Wheelchair comprising a height-adjustable and incline-adjustable seat

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EP2758016A1 true EP2758016A1 (en) 2014-07-30
EP2758016B1 EP2758016B1 (en) 2015-05-27

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EP (1) EP2758016B1 (en)
CN (1) CN103957861B (en)
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WO (1) WO2013041201A1 (en)

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DE102011117671B4 (en) 2015-08-20
US20140327231A1 (en) 2014-11-06
US8985618B2 (en) 2015-03-24
CN103957861A (en) 2014-07-30
DE102011117671A1 (en) 2013-03-21
EP2758016B1 (en) 2015-05-27
WO2013041201A1 (en) 2013-03-28
CN103957861B (en) 2016-07-06

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