SE514299C2 - Detachable tubular drive ring for wheelchair wheel has annular inwards-facing rim extension forming concave outer surface to which high-friction material is applied - Google Patents
Detachable tubular drive ring for wheelchair wheel has annular inwards-facing rim extension forming concave outer surface to which high-friction material is appliedInfo
- Publication number
- SE514299C2 SE514299C2 SE9803137A SE9803137A SE514299C2 SE 514299 C2 SE514299 C2 SE 514299C2 SE 9803137 A SE9803137 A SE 9803137A SE 9803137 A SE9803137 A SE 9803137A SE 514299 C2 SE514299 C2 SE 514299C2
- Authority
- SE
- Sweden
- Prior art keywords
- wheel
- finger guard
- drive
- drive ring
- wheelchair
- Prior art date
Links
- 239000002783 friction material Substances 0.000 title abstract 2
- 210000003811 finger Anatomy 0.000 claims 7
- 210000003813 thumb Anatomy 0.000 claims 1
- 230000008719 thickening Effects 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
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
- A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
- A61G5/028—Special adaptations or provisions on hand rim, e.g. for facilitating gripping
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)
- Braking Arrangements (AREA)
- Handcart (AREA)
Abstract
Description
514 299 2 Uppfinningen beskrives i det följande såsom ett föredraget utföringsexempel med hänvisning till de bifogade ritningarna, på vilka Fig l-7 visar olika vyer av greppsamverkan med en drivring, Fig 8 visar en tvärsnittsvy av en drivring, och Fig 9 visar schematiskt fastsättningen av en drivring på ett rullstolshjul. The invention is described in the following as a preferred embodiment with reference to the accompanying drawings, in which Figs. 1-7 show different views of gripping cooperation with a drive ring, Fig. 8 shows a cross-sectional view of a drive ring, and Fig. 9 shows schematically the a drive ring on a wheelchair wheel.
Hos en anordning l vid en rullstolsdrivring 2 för ett rullstolshjul 3 och som uppvisar en i riktning 4 ut från rullstolshjulet 3 vänd drivpåverkningsyta 5 enligt uppfinningen bildas den sagda drivpåverkningsytan 5 av en övre belägen konkav drivpåverkningsyta 6 som övergår direkt i en nedre belägen konvex drivpåverkningsyta 7 utan några mellanbelägna ytor.In a device 1 at a wheelchair drive ring 2 for a wheelchair wheel 3 and which has a drive force surface 5 facing away from the wheelchair wheel 3 according to the invention, said drive force surface 5 is formed by an upper located concave drive force surface 6 which merges directly into a lower position convex drive force surface 7. without any intermediate surfaces.
Den sagda nedre belägna konvexa drivpåverk- ningsytan 7 övergår i motsatta riktningen 8 i en cirkulär omgripningsdel 9 som är belägen på undersidan av den utåtvända drivpåverkningsytan 5.The said lower located convex drive force surface 7 merges in the opposite direction 8 into a circular gripping part 9 which is located on the underside of the outwardly facing drive force surface 5.
Sagda övre belägna konkava drivpåverkningsyta 6 och omgripningsdelen 9 övergår gemensamt i ett nedåtvinklat fingerskydd 10, som sträcker sig in mot hjulets mitt ll och som skall förhindra att fingrarna kommer in i hjulets ekrar.Said upper concave drive actuating surface 6 and the gripping part 9 merely merge into a downwardly angled finger guard 10, which extends towards the center 11 of the wheel and which is intended to prevent the fingers from entering the spokes of the wheel.
Den sagda drivringen 2 bildas av en hålprofil som sträcker sig runt utmed hjulets hela omkrets och företrä- desvis är den sagda hålprofilen droppformad.The said drive ring 2 is formed by a hole profile which extends around the entire circumference of the wheel and preferably the said hole profile is tapered.
Den övre belägna konkava drivpåverkningsytan 6 bildas av ovansidan av hålprofilens snett uppåt vända avsmal- nande tvärsnittsparti 12.The upper concave drive actuating surface 6 is formed by the upper side of the tapered cross-section portion 12 of the hollow profile facing upwards.
Sagda hålprofils snett uppåt avsmalnande änd- parti 12 sträcker sig, med en vinkel x som är mellan 40 och 60° från ett horisontellt plan l3, företrädesvis ca 40°. 514 299 3 Det bildas ett fingerskydd 10 av fortsättningen 14 på hålprofilens avsmalnande ände 12 som sträcker sig avvink- lat in mot hjulets mitt 11.Said hollow profile of obliquely upwardly tapering end portion 12 extends, with an angle x which is between 40 and 60 ° from a horizontal plane 13, preferably about 40 °. A finger guard 10 is formed by the continuation 14 on the tapered end 12 of the hole profile which extends at an angle towards the center 11 of the wheel.
Företrädesvis sträcker sig den sagda fortsätt- ningen 14 av hålprofilens avsmalnande ände 12 väsentligen vinkelrätt mot det snett uppåt 15 sig sträckande ändpartiet 12.Preferably, said extension 14 of the tapered end 12 of the hole profile extends substantially perpendicular to the obliquely upwardly extending end portion 12.
Drivpåverkningsytan 6, som man påverkar med hela tummens 16 undersida 16A och insidan 17 av handen 18 och fingerskyddet 10 sträcker sig utmed hela hjulets omkrets. Det sagda fingerskyddet 10 är såsom även resten av drivringen 2 förbindbart med hjulets stomme, d.v.s. fälgen 19 företrädesvis med fästen 20 i form av lösa lämpligen Z-formade vinkelstycken som man förbinder drivringen 2 med hjulets fälg 19, exempelvis som visas i Fig 9. Drivringen 2 och hjulets fälg 19 är således separata delar skilda åt men som är förbindbara med varandra.The driving force surface 6, which is actuated with the entire underside 16A and the inside 17 of the hand 18 and the finger guard 10 extends along the entire circumference of the wheel 16. The said finger guard 10 is, like the rest of the drive ring 2, connectable to the body of the wheel, i.e. the rim 19 preferably with brackets 20 in the form of loose suitably Z-shaped angle pieces which are connected to the drive ring 2 with the wheel rim 19, for example as shown in Fig. 9. The drive ring 2 and the wheel rim 19 are thus separate parts but which are connectable to each other. .
Yttre änden 20A av resp fäste 20 är därvid omvinklat 21 till att omsluta en fälgkant 22 och fastklämmas av däcket 27 hos hjulet 3 samt kan ytterligare fästas genom att nitas eller skruvas fast på fälgen. Motstående inre änden 20B av fästet 20 är även omvinklat 23 så att det kan anligga mot ovansidan 10A av fingerskyddet 10 och fastnitas eller skruvas fast med skruv 24 på detta.The outer end 20A of the respective bracket 20 is then angled 21 to enclose a rim edge 22 and is clamped by the tire 27 of the wheel 3 and can be further fastened by riveting or screwing on the rim. The opposite inner end 20B of the bracket 20 is also angled 23 so that it can abut against the top 10A of the finger guard 10 and be riveted or screwed with screw 24 thereon.
När däcket 27 fylles med luft trycker däcket mot fästet 20, 21 och fasthåller detta ytterligare, företrädes- vis mot en förtjockning 28 hos fälgkanten.When the tire 27 is filled with air, the tire presses against the bracket 20, 21 and holds it further, preferably against a thickening 28 of the rim edge.
På ritningarna visas fästtungor 25 med hål 26 på drivringen 2 och som fästet 20 kan förbindas med alterna- tivt.The drawings show fastening tongues 25 with holes 26 on the drive ring 2 and with which the bracket 20 can alternatively be connected.
Uppfinningen torde ha förståtts av det ovan beskrivna och det på ritningarna visade men kan varieras inom ramen för patentkraven utan att uppfinningstanken frångås.The invention should have been understood from what has been described above and that shown in the drawings, but can be varied within the scope of the claims without departing from the spirit of the invention.
Claims (9)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9803137A SE514299C2 (en) | 1998-09-16 | 1998-09-16 | Detachable tubular drive ring for wheelchair wheel has annular inwards-facing rim extension forming concave outer surface to which high-friction material is applied |
US09/263,710 US6241268B1 (en) | 1998-09-16 | 1999-03-05 | Wheelchair friction drive ring |
EP99951298A EP1113774A1 (en) | 1998-09-16 | 1999-09-01 | Wheelchair hand rim with friction |
PCT/SE1999/001500 WO2000018346A1 (en) | 1998-09-16 | 1999-09-01 | Wheelchair hand rim with friction |
CA002344392A CA2344392C (en) | 1998-09-16 | 1999-09-01 | Wheelchair hand rim with friction |
JP2000571868A JP2002525174A (en) | 1998-09-16 | 1999-09-01 | Wheelchair friction hand rim |
AU63762/99A AU761888B2 (en) | 1998-09-16 | 1999-09-01 | Wheelchair hand rim with friction |
HK02100140.7A HK1038494A1 (en) | 1998-09-16 | 2002-01-09 | Wheelchair hand rim with friction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9803137A SE514299C2 (en) | 1998-09-16 | 1998-09-16 | Detachable tubular drive ring for wheelchair wheel has annular inwards-facing rim extension forming concave outer surface to which high-friction material is applied |
Publications (4)
Publication Number | Publication Date |
---|---|
SE9803137D0 SE9803137D0 (en) | 1998-09-16 |
SE514299C3 SE514299C3 (en) | 2000-03-17 |
SE9803137L SE9803137L (en) | 2000-03-17 |
SE514299C2 true SE514299C2 (en) | 2001-02-05 |
Family
ID=20412610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9803137A SE514299C2 (en) | 1998-09-16 | 1998-09-16 | Detachable tubular drive ring for wheelchair wheel has annular inwards-facing rim extension forming concave outer surface to which high-friction material is applied |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE514299C2 (en) |
-
1998
- 1998-09-16 SE SE9803137A patent/SE514299C2/en unknown
Also Published As
Publication number | Publication date |
---|---|
SE9803137L (en) | 2000-03-17 |
SE9803137D0 (en) | 1998-09-16 |
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