EP0339500B1 - Rollstuhl - Google Patents
Rollstuhl Download PDFInfo
- Publication number
- EP0339500B1 EP0339500B1 EP89107186A EP89107186A EP0339500B1 EP 0339500 B1 EP0339500 B1 EP 0339500B1 EP 89107186 A EP89107186 A EP 89107186A EP 89107186 A EP89107186 A EP 89107186A EP 0339500 B1 EP0339500 B1 EP 0339500B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chair frame
- drive
- wheel
- wheelchair
- wheels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
- 239000006096 absorbing agent Substances 0.000 claims abstract description 5
- 230000035939 shock Effects 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
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
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
- A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
- A61G5/045—Rear wheel drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1054—Large wheels, e.g. higher than the seat portion
-
- 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
- A61G5/1078—Parts, details or accessories with shock absorbers or other suspension arrangements between wheels and frame
Definitions
- the invention relates to a wheelchair for the disabled and the sick, in which two wheels are each connected to an electric motor drive and each of the two driven wheels is cushioned against the chair frame.
- each wheel is rotatably mounted on an additional rocker arm, which ends at one end is pivotally mounted on the chair joint and is at the other end connected to a shock absorber arranged between the chair frame and the swing arm.
- the drive is housed in the swing arm, which must have a special box profile.
- the object of the invention is to provide a simplified suspension design for the rear wheels of a wheelchair with a uniform drive and wheel contact holder with the road even with bumps, so that the wheelchair shows a safe driving property.
- the drive for each rear wheel is located directly on the wheel axle and the drive with the rear wheel is cushioned directly by the shock absorber, which simplifies the design and makes it more cost-effective, but still gives a very good function.
- the drives are secured against rotation and their movable connection relative to the chair frame is achieved in a simple manner by means of ball-and-socket rods.
- the cushioning is formed by simple and cost-saving telescopic springs, which are articulated between the drive and the chair frame.
- each driven wheel (1) with its associated drive (2) is designed to be separately cushioned relative to the chair frame (3).
- a telescopic spring in the form of a gas pressure spring or a shock absorber is provided as the suspension (4).
- the spring (4) for each driven wheel (1) has one end in a joint (5) of the drive (2) sitting on the wheel axle (6) and the other end in a joint (7) on the chair frame (3 ) fixed, whereby the wheel (1) with drive (2) is resiliently mounted with respect to the chair frame (3).
- the two rear wheels (1) of the wheelchair are each driven by an electric motor by a drive (2) and cushioned against the chair frame (3).
- the two drives (2) are movably connected to the chair frame (3) by means of ball-and-socket rods (8), which compensates for the spring movements of the wheels (1) in relation to the chair frame (3) if the road surface is uneven.
- the ball joint rods (8) are articulated with a length end in the center area of the wheelchair on a strut (3a) of the chair frame (3) and with the other length end on a drive (2).
- the wheelchair is equipped with a sprung double drive as the drive system.
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)
- Invalid Beds And Related Equipment (AREA)
- Handcart (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Materials For Medical Uses (AREA)
- Developing Agents For Electrophotography (AREA)
Description
- Die Erfindung bezieht sich auf einen Rollstuhl für Behinderte und Kranke, bei dem zwei Räder mit je einem elektromotorischen Antrieb verbunden sind und jedes der beiden angetriebenen Räder gegenüber dem Stuhlgestell abgefedert gelagert ist.
- Bei einem derartig ausgeführten, aus der DE-A 3 414 204 bekannt gewordenen Rollstuhl sind die Räder einzeln angetrieben und abgefedert, wobei die Antriebs- und Federausführung verhältnismäßig aufwendig und somit kostenspielig ist, denn jedes Rad ist an einer zusätzlichen Schwinge drehbar gelagert, die einenends am Stuhlgelenk schwenkbar lagert und anderenends mit einem zwischen Stuhlgestell und Schwinge angeordneten Stoßdämpfer federnd verbunden ist.
Weiterhin ist der Antrieb hierbei in der Schwinge untergebracht, die dafür ein besonderes Kastenprofil haben muß. - Aufgabe der Erfindung ist die Schaffung einer vereinfachten Abfederungsausführung für die Hinterräder eines Rollstuhles bei gleichmäßigem Antrieb und Radkontakthalterung mit der Fahrbahn auch bei Unebenheiten, so daß der Rollstuhl eine sichere Fahreigenschaft zeigt.
- Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des einzigen Patentanspruches gelöst.
- Der Antrieb für jedes Hinterrad sitzt direkt auf der Radachse und der Antrieb mit Hinterrad wird direkt durch den Stoßdämpfer abgefedert, was die Konstruktion vereinfacht und kostengünstiger macht und trotzdem eine sehr gute Funktion ergibt. Die Verdrehsicherung der Antriebe und deren bewegliche Verbindung gegenüber dem Stuhlgestell wird in einfacher Weise durch Kugelgelenkstangen erzielt.
- Durch die separate Abfederung der angetriebenen Rollstuhlräder gleichen diese unabhängig voneinander die Fahrbahnunebenheiten aus und bleiben dadurch stets mit der Fahrbahn in Kontakt, was einen gleichmäßigen Antrieb des Rollstuhles bewirkt und eine einwandfreie Lenkmöglichkeit ergibt.
- Hierdurch erhält die den Rollstuhl benutzende Person ein sicheres Fahrverhalten und durch die Abfederung zwischen angetriebenen Rädern und Stuhlgestell eine optimale Sitzeigenschaft.
- Die Abfederung ist von einfachen und kostensparenden Teleskopfedern gebildet, die gelenkig zwischen Antrieb und Stuhlgestell angeordnet sind.
- Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, welches nachfolgend näher erläutert wird.
Es zeigt: - Fig. 1
- eine Seitenansicht eines Rollstuhles mit zwischen Antrieb der Hinterräder und dem Stuhlgestell angeordneter Federung,
- Fig. 2
- eine Rückansicht des Rollstuhles mit den beiden Antrieben für jeweils ein Rad und der für jeden Antrieb vorgesehenen Federung.
- Bei dem elektromotorisch angetriebenen Rollstuhl für Behinderte und Kranke ist jedes angetriebene Rad (1) mit seinem zugeordneten Antrieb (2) gegenüber dem Stuhlgestell (3) separat abgefedert ausgebildet.
- Als Federung (4) ist dabei jeweils eine Teleskopfeder in Form einer Gasdruckfeder oder eines Stoßdämpfers vorgesehen. Die Feder (4) für jedes angetriebene Rad (1) ist dabei mit einem Ende in einem Gelenk (5) des auf der Radachse (6) sitzenden Antriebes (2) und mit seinem anderen Ende in einem Gelenk (7) am Stuhlgestell (3) festgelegt, wodurch das Rad (1) mit Antrieb (2) gegenüber dem Stuhlgestell (3) federnd gelagert ist.
- In bevorzugter Weise sind die beiden Hinterräder (1) des Rollstuhles durch je einen Antrieb (2) elektromotorisch angetrieben und gegenüber dem Stuhlgestell (3) abgefedert.
- Die beiden Antriebe (2) sind über Kugelgelenkstangen (8) mit dem Stuhlgestell (3) beweglich verbunden, wodurch die bei Unebenheiten in der Fahrbahn auftretenden Federbewegungen der Räder (1) gegenüber dem Stuhlgestell (3) ausgeglichen werden.
- Durch diese Kugelgelenkstangen (8) werden gleichzeitig die auf den Radachsen (6) sitzenden Antriebe (2) gegen axiales Verdrehen gesichert.
- Die Kugelgelenkstangen (8) sind mit einem Längenende im Mittenbereich des Rollstuhles an einer Strebe (3a) des Stuhlgestelles (3) und mit dem anderen Längenende an einem Antrieb (2) angelenkt.
- Der Rollstuhl ist erfindungsgemäß mit einem abgefederten Doppelantrieb als Antriebssystem ausgestattet.
Claims (1)
- Rollstuhl für Behinderte und Kranke, bei dem zwei Räder mit je einem elektromotorischen Antrieb verbunden sind und jedes der beiden angetriebenen Räder gegenüber dem Stuhlgestell abgefedert gelagert ist, dadurch gekennzeichnet, daß- die beiden Hinterräder (1) angetrieben sind,- auf der Radachse (6) jedes Hinterrades (1) ein elektrischer Antrieb (2) sitzt,- die federnde Lagerung jedes Hinterrades(1) von einer mit einem Ende in einer Achse (5) des Antriebs (2) und mit dem anderen Ende in einer Achse (7) des Stuhlgestelles (3) angelenkten Teleskopfeder (4) in Form einer Gasdruckfeder oder eines Stoßdämpfers gebildet istund- die beiden Antriebe (2) jeweils über mit einem Ende am Antrieb (2) und mit dem anderen Ende an einer mittigen Strebe (3a) des Stuhlgestelles angelenkten Kugelgelenkstangen (8) mit dem Stuhlgestell (3) beweglich verbunden und gegenüber demselben gegen axiales Verdrehen gesichert sind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89107186T ATE86093T1 (de) | 1988-04-28 | 1989-04-21 | Rollstuhl. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8805610U DE8805610U1 (de) | 1988-04-28 | 1988-04-28 | Rollstuhl |
| DE8805610U | 1988-04-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0339500A2 EP0339500A2 (de) | 1989-11-02 |
| EP0339500A3 EP0339500A3 (en) | 1990-02-14 |
| EP0339500B1 true EP0339500B1 (de) | 1993-03-03 |
Family
ID=6823460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89107186A Revoked EP0339500B1 (de) | 1988-04-28 | 1989-04-21 | Rollstuhl |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0339500B1 (de) |
| AT (1) | ATE86093T1 (de) |
| DE (2) | DE8805610U1 (de) |
| ES (1) | ES2037901T3 (de) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8910975B2 (en) | 2007-02-14 | 2014-12-16 | Invacare Corporation | Wheelchair with suspension |
| US8925943B2 (en) | 2001-10-10 | 2015-01-06 | Invacare Corp. | Wheelchair suspension |
| US9010470B2 (en) | 2009-10-09 | 2015-04-21 | Invacare Corporation | Wheelchair suspension |
| US9149398B2 (en) | 2000-10-27 | 2015-10-06 | Invacare Corporation | Obstacle traversing wheelchair |
| US9308143B2 (en) | 2012-02-15 | 2016-04-12 | Invacare Corporation | Wheelchair suspension |
| US9364377B2 (en) | 2002-10-25 | 2016-06-14 | Invacare Corporation | Suspension for wheeled vehicles |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03502300A (ja) * | 1988-11-17 | 1991-05-30 | インヴァケア コーポレーション | 横方向に取り付けられた駆動機構を備えた動力形車椅子 |
| US5180025A (en) * | 1991-12-13 | 1993-01-19 | Yeh Bean Shung | Wheeled-chair chassis with a suspension mechanism |
| FR2685866B1 (fr) * | 1992-01-03 | 1997-08-29 | Cophignon Jacques | Montage d'amortisseurs pour fauteuils roulants des handicapes. |
| NL9202183A (nl) * | 1992-12-17 | 1994-07-18 | Seenus Nl Bv R Van | Rolstoel. |
| NL9300063A (nl) * | 1993-01-13 | 1994-08-01 | Ligtvoet Products Bv | Rolstoel. |
| US5518081A (en) * | 1993-07-15 | 1996-05-21 | Thibodeau; Bryan H. | All-terrain, all-weather wheelchair |
| US5575348A (en) * | 1994-04-15 | 1996-11-19 | Invacare Corporation | Powered wheelchair with adjustable center of gravity and independent suspension |
| DE4420877C2 (de) * | 1994-06-15 | 2001-09-20 | Invacare Deutschland Gmbh | Rollstuhl |
| DE19932109C1 (de) * | 1999-07-09 | 2000-08-24 | Invacare Deutschland Gmbh | Gefederter Rollstuhl |
| US11213441B2 (en) | 2002-10-25 | 2022-01-04 | Invacare Corporation | Suspension for wheeled vehicles |
| ATE493960T1 (de) | 2007-02-08 | 2011-01-15 | Invacare Corp | Rollstuhlaufhängung |
| CN105496668A (zh) * | 2014-09-26 | 2016-04-20 | 广东凯洋医疗科技集团有限公司 | 一种电动轮椅用轮毂快速离合装置 |
| US11903887B2 (en) | 2020-02-25 | 2024-02-20 | Invacare Corporation | Wheelchair and suspension systems |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2110269C2 (de) * | 1971-03-04 | 1983-03-17 | Fa. Wilhelm Meyer, 4973 Vlotho | Faltbarer Krankenfahrstuhl |
| US4190263A (en) * | 1978-05-22 | 1980-02-26 | Albuquerque Patents, Ltd. | Wheelchair with shock absorber |
| DE3414204A1 (de) * | 1984-04-14 | 1985-10-24 | Horst 4970 Bad Oeynhausen Lindenkamp | Kleinfahrzeug, insbesondere fuer behinderte |
-
1988
- 1988-04-28 DE DE8805610U patent/DE8805610U1/de not_active Expired
-
1989
- 1989-04-21 EP EP89107186A patent/EP0339500B1/de not_active Revoked
- 1989-04-21 ES ES198989107186T patent/ES2037901T3/es not_active Expired - Lifetime
- 1989-04-21 AT AT89107186T patent/ATE86093T1/de active
- 1989-04-21 DE DE8989107186T patent/DE58903629D1/de not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9149398B2 (en) | 2000-10-27 | 2015-10-06 | Invacare Corporation | Obstacle traversing wheelchair |
| US8925943B2 (en) | 2001-10-10 | 2015-01-06 | Invacare Corp. | Wheelchair suspension |
| US9370455B2 (en) | 2001-10-10 | 2016-06-21 | Invacare Corporation | Wheelchair suspension |
| US9364377B2 (en) | 2002-10-25 | 2016-06-14 | Invacare Corporation | Suspension for wheeled vehicles |
| US8910975B2 (en) | 2007-02-14 | 2014-12-16 | Invacare Corporation | Wheelchair with suspension |
| US9346335B2 (en) | 2007-02-14 | 2016-05-24 | Invacare Corporation | Stability control system |
| US11850906B2 (en) | 2007-02-14 | 2023-12-26 | Invacare Corporation | Stability control system |
| US9010470B2 (en) | 2009-10-09 | 2015-04-21 | Invacare Corporation | Wheelchair suspension |
| US9913768B2 (en) | 2009-10-09 | 2018-03-13 | Invacare Corporation | Wheelchair suspension |
| US9308143B2 (en) | 2012-02-15 | 2016-04-12 | Invacare Corporation | Wheelchair suspension |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0339500A3 (en) | 1990-02-14 |
| DE8805610U1 (de) | 1988-07-07 |
| ATE86093T1 (de) | 1993-03-15 |
| EP0339500A2 (de) | 1989-11-02 |
| DE58903629D1 (de) | 1993-04-08 |
| ES2037901T3 (es) | 1993-07-01 |
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| 27W | Patent revoked |
Effective date: 19950211 |