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WO1991003222A1 - Appareil de transport - Google Patents

Appareil de transport Download PDF

Info

Publication number
WO1991003222A1
WO1991003222A1 PCT/AU1990/000381 AU9000381W WO9103222A1 WO 1991003222 A1 WO1991003222 A1 WO 1991003222A1 AU 9000381 W AU9000381 W AU 9000381W WO 9103222 A1 WO9103222 A1 WO 9103222A1
Authority
WO
WIPO (PCT)
Prior art keywords
transport apparatus
wheel
wheels
drive wheel
steering
Prior art date
Application number
PCT/AU1990/000381
Other languages
English (en)
Inventor
William Barry Kilburn
Peter Ernest Thompson
Original Assignee
William Barry Kilburn
Peter Ernest Thompson
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 William Barry Kilburn, Peter Ernest Thompson filed Critical William Barry Kilburn
Publication of WO1991003222A1 publication Critical patent/WO1991003222A1/fr

Links

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
    • A61G5/042—Front 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
    • A61G5/1051—Arrangements for steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
    • B62D61/12—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with variable number of ground engaging wheels, e.g. with some wheels arranged higher than others, or with retractable wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62H—CYCLE STANDS; SUPPORTS OR HOLDERS FOR PARKING OR STORING CYCLES; APPLIANCES PREVENTING OR INDICATING UNAUTHORIZED USE OR THEFT OF CYCLES; LOCKS INTEGRAL WITH CYCLES; DEVICES FOR LEARNING TO RIDE CYCLES
    • B62H1/00—Supports or stands forming part of or attached to cycles
    • B62H1/10—Supports or stands forming part of or attached to cycles involving means providing for a stabilised ride
    • B62H1/12—Supports or stands forming part of or attached to cycles involving means providing for a stabilised ride using additional wheels
    • 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
    • A61G5/1005—Wheelchairs having brakes
    • A61G5/1013—Wheelchairs having brakes engaging the wheel
    • A61G5/1018—Wheelchairs having brakes engaging the wheel on the running surface

Definitions

  • TRANSPORT APPARATUS This invention relates to transport apparatus.
  • This invention has particular but not exclusive applicati to wheelchairs for disabled persons and the like, and f illustrative purposes reference will be made to such applicatio However, it is to be understood that this invention could be us in other applications, such as industrial vehicles.
  • Modern powered wheelchairs are typically constructed traditional hand-propelled designs with motor drive equipme adapted thereto.
  • Such wheelchairs typically have a pair of lar rear wheels, each driven by an individual electric motor a control system and a pair of small castoring front wheel Steering is accomplished by selectively varying the relati speeds of the two rear wheels.
  • Such wheelchairs are qui expensive to build, particularly as two complete drive syste must be provided.
  • transport apparatus including: a frame assembly; wheeled support means for supporting said frame assembly an operating attitude and including a steerable drive wheel an supporting wheel, and stabilizer means for provide support to said frame assem upon inclination of said frame assembly beyond said operat attitude.
  • the frame assembly may take any form consistent with function of mounting the support wheel, the steerable drive wheel and the stabilizer means.
  • the frame assembly is preferably integrated into the structure of a wheel chair and may be formed as a rigid structure for maximum strength. Whilst rigidity of structure is a desirable characteristic of the frame assembly, in keeping with most wheel chairs it is preferred that the frame assembly include a first portion to which the drive wheel is mounted and a second portion to which the support wheel is mounted, the first portion being detachably mounted to the second portion such that the transport apparatus may be dismantled for stowage.
  • the apparatus is provided with a single steerable drive wheel mounted to the first portion of the frame assembly and a pair of coaxial support wheels mounted to the second portion of the frame assembly such that the apparatus obtains the advantages of simplicity, economy and efficiency of the the tricycle-type apparatus of the prior art, without the disadvantages of instability inherent in such apparatus.
  • the steerability of the drive wheel may be provided by any suitable steering means permitting selectable direction of travel of the drive wheel relative to the frame assembly whist permitting the transmission of rotary power to the drive wheel.
  • the steering means may include a tiller bar or a steering wheel, but it is preferred that the steering means include a cranked shaft extending vertically above the drive wheel to a location convenient for a seated passenger to operate.
  • the steering means may include a power actuator such that the drive wheel may be steered by small movements of a control switch, joystick or the like whereby the transport apparatus may be rendered usable by a severely-handicapped passenger.
  • the drive wheel may be mounted to the frame assembly through suspension means whereby variations in the vertical load applied through the drive wheel may be minimised such that a desired level of traction may be attained on uneven surfaces.
  • suspension means may for example provide that the drive wheel is substantially supporting its end of the apparatus thereby removing all load from the stabilizer means.
  • the suspension means may cooperatively support the load with the stabilizer means and the support wheels, with the driving wheel maintaining sufficient downward force on the ground to maintain traction.
  • T drive wheel may be of a solid type such as plastic or metal alternatively the drive wheel may be provided with a traction a ride inproving tyre selected from solid rubber, pneumatic semipneumatic types.
  • the drive wheel forms a steerable drive whe assembly with driving means for the wheel and the steering mean
  • the driving means may take any form consistent with its function of being able to power the wheel whilst permitting steering of t wheel.
  • the driving means may include electric moto or internal combustion engines, with electric motors bei preferred for their suitability for a wide range of operatio including indoor operations.
  • electric motors are particularly preferred fr the point of view of their quietness of operation and safety confined spaces.
  • the driving means is preferably mounted in the dri assembly such that it steers with the steering drive wheel su that the need for complicated drive linkages such as consta velocity joints is eliminated.
  • the drive means driv the steering drive wheel through a speed reducing drive train, t speed reducing drive train preferably including a prima reduction portion and a final drive reduction portio
  • the primary reduction portion comprises a belt and a a pair of unequal pitch pulleys
  • the final drive reducti portion is a gear train.
  • the gear train preferably compris alternating nylon and mild steel helical cut gears such that t gear train is substantially lubrication free.
  • the stabilizing means may take any form consistent with t function of preventing the apparatus from overturning about axis drawn between the drive wheel and any support wheel, and such may include skids, wheels or the like.
  • a pair stabilizing wheels is provided, the stabilizing wheels bei arranged with the pair of support wheels in a substantially squa or rectangular pattern such that the maximum stability may provided within the length and width of the transport apparatu
  • other wheel configurations including greater number of support wheels and/or stabilizer wheels may used.
  • the preferred pair of stabilizer wheels may be of the castoring or self-steering type such that they may align themselves with the direction of motion of the transport apparatus at any time.
  • the stabilizer wheels may be coupled for steering in concert with the steerable drive wheel. In either case, it is preferred that the drive wheel be mounted to the frame assembly substantially intermediate the stabilizer wheels for maximum maneuverability.
  • the drive wheel and stabilizer wheels be in vertical alignment.
  • the stabilizer wheels are arranged to be ten to twenty millimetres and preferably twelve millimetres above a level surface with which the drive wheel is in contact, such that minimal overturning movement of the transport apparatus may occur before one or other of the stabilizer wheels contacts the surface and stabilises the apparatus.
  • the frame assembly may include a seat for supporting a passenger.
  • the seat may be mounted to the first portion by a vertical stem associated with the seat and adapted to slide within a vertical socket associated with the first portion of the frame assembly, the stem being provided with an outwardly projecting key adapted to cooperate with one or the other of a pair of opposed slots provided in said sleeve, whereby the seat may be selectively aligned longitudinally with the frame assembly.
  • the seat is provided with anti-rotation security whilst being selectable between a passenger-operated mode with a user facing the drive wheel and a supervisor-operated mode with the passenger facing away from the drive wheel, such that the transport apparatus may be operated as desired by the passenger or by an accompanying supervisor.
  • the transport apparatus may be provided with attachment means for attaching an accessory to the transport apparatus.
  • the accessory is a shopping trolley
  • the attachment means includes clamps for attachment to the rear tubular legs of a standard shopping trolley, such that a person sitting in a wheelchair may utilise a shopping trolley for storing purchases, thus obviating the necessity for bringing a purpose-built receptacle to a shopping centre.
  • this invention resides in a method forming a transport apparatus, including:- providing a frame assembly; providing a drive wheel mounted to a front portion of sai frame assembly by a substantially vertical steering pivot; providing a pair of support wheels mounted to a rear portio of said frame assembly at opposed ends of a transverse axis; providing a pair of stabilizer wheels mounted to said fra assembly through castoring steering pivots, said stabilizer wheel being disposed substantially outboard of said drive wheel; and assembling said frame and said wheels to form said transpor apparatus.
  • FIG. 1 is a side view of a transport apparatus according t the invention
  • FIG. 2 is a plan view of the transport apparatus shown i
  • FIG. 1 with the seat removed for clarity
  • FIG. 3 is a side view of a further steering apparatus fo the transport apparatus.
  • the transport apparatus 10 shown in FIGS. 1 and 2 includes rear frame 11 and a front frame 12.
  • the rear frame 11 includes vertical central tube 13 which in turn supports a square tube 1 into which a square peg 15 slides.
  • the square peg 15 is mounte to the front of the rear frame 11, and a retaining pin 16 passes through matching apertures in the tube 14 and the peg 15 to retai the former within the latter.
  • a pair of support wheels 17 ar mounted for rotation about a common transverse axis at the rear o the rear frame 12, and a pair of stabilizer wheel supports 2 extend forwardly and outwardly from the central tube 13 to carr stabilizer wheels 21 in castoring wheel carriers 22.
  • the front frame 11 includes a vertical steering bearing 2 within which a steering frame 24 is supported.
  • a drive wheel 2 carried within the steering frame 24 is powered through reduction drive 26 from an electric motor 27 also mounted to t steering frame 24.
  • the vertical position of the drive wheel 25 relative to the support wheels 17 and the stabilizer wheels 20 is adjusted to leave a clearance of about twelve millimetres between the stabilizer wheels and a flat plane 30 engaging the drive wheel 25 and the support wheels 17. This ensures that, on level ground, all the weight of the front portion of the transport apparatus 10 is applied to the drive wheel 25 to enhance traction, while the transport apparatus 10 cannot rotate more than a small angle about an overturning axis before contact occurs between the ground and an stabilizer wheel 20, preventing further rotation.
  • a shaped seat shell 31 is mounted on a vertical shaft 32 to form a seat assembly 33.
  • the shaft 32 slides into the central tube 13, and which may be detached therefrom for stowage.
  • a notched plate 34 engages with lugs 35 formed on the upper end of the central tube 13 to lock the seat assembly 33 facing either the front or rear of the transport apparatus 10 as desired.
  • the rear frame 11 includes a support for a battery 36 and an electronic speed control 37, the latter being controlled from a switch assembly 40 mounted to the steering frame 24, the switch assembly 40 being actuated by a flexible cable 41 passing through a steering handle 42 to an actuator 43 on its top end.
  • the steering handle 42 may be detached from the top of the steering frame 24 for stowage.
  • a brake lever 44 operates an eccentric circular cam 45 to urge a brake plate 46 into engagement with a support wheel 17 to immobilise the transport apparatus 10 as desired.
  • Footrests 47 are mounted to the front and rear frames 11 and 12.
  • the steering assembly 60 has a steering frame 61 pivoted within a steering pivot 62.
  • a steering motor 63 mounted to the steering pivot through a longitudinal member 64 is connected to rotate the steering frame 61 through reduction gearing 65.
  • Control switches or the like placed within operative reach of a passenger operate the steering motor 63.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Handcart (AREA)

Abstract

L'appareil de transport décrit (10) comprend un châssis arrière (11) et un châssis avant (12). Une paire de roues de support (17) est montée de façon à tourner autour d'un axe transversal commun à l'arrière du châssis arrière (12) et une paire de supports de roues stabilisatrices (20) s'étend vers l'avant et vers l'extérieur à partir d'un tube central (13) et sert à soutenir les roues stabilisatrices (21) dans des organes porte-roues à chasse de direction (22). Le châssis avant (11) comporte un palier de direction verticale (23) dans lequel est soutenu un châssis de direction (24). Une roue motrice (25) soutenue à l'intérieur du châssis de direction (24) est mue par un entraînement réducteur (26) à partir d'un moteur électrique (27) également monté sur le châssis de direction (24). Au niveau du sol, tout le poids de la partie avant de l'appareil de transport (10) s'applique sur la roue motrice (25) de façon à améliorer la traction, tandis que l'appareil de transport (10) ne peut pas tourner au-delà d'un petit angle autour d'un axe de renversement avant qu'une roue stabilisatrice (21) n'entre en contact avec le sol, empêchant ainsi toute rotation ultérieure.
PCT/AU1990/000381 1989-08-28 1990-08-28 Appareil de transport WO1991003222A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPJ602589 1989-08-28
AUPJ6025 1989-08-28

Publications (1)

Publication Number Publication Date
WO1991003222A1 true WO1991003222A1 (fr) 1991-03-21

Family

ID=3774144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1990/000381 WO1991003222A1 (fr) 1989-08-28 1990-08-28 Appareil de transport

Country Status (1)

Country Link
WO (1) WO1991003222A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686507A1 (fr) * 1992-01-24 1993-07-30 Arnas Joseph Chassis pour fauteuil roulant motorise ou autre structure roulante motorisee et assise de fauteuil ou structure destinee a etre mise en place sur le chassis.
WO2003020194A1 (fr) * 2001-08-31 2003-03-13 Fredrick Charles Brown Vehicules de deplacement ameliores
GB2440322A (en) * 2006-07-25 2008-01-30 Advanced Vehicle Concepts Ltd A wheeled vehicle
GB2492275A (en) * 2008-06-25 2012-12-26 Ahmad Amiri A stable narrow vehicle with stabilising arms

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2215054A5 (fr) * 1973-01-23 1974-08-19 Folco Zambelli Gian Matteo
GB2124985A (en) * 1982-07-01 1984-02-29 Jones Edward Daniel Steerable drive unit for wheelchair
US4452327A (en) * 1980-11-06 1984-06-05 Mowat Donald J Motorized vehicle
AU2833184A (en) * 1983-05-28 1984-11-29 Tsuchie, K. Wheel arrangement of bicycle
US4488617A (en) * 1982-05-12 1984-12-18 Ateliers De La Motobecane Four-wheel vehicle
WO1989006117A1 (fr) * 1988-01-11 1989-07-13 Anschütz & Co. Gmbh Procede pour stabiliser un vehicule a roues a un seul essieu, et vehicule ainsi stabilise
WO1989008037A1 (fr) * 1988-02-29 1989-09-08 Kitner William M Stabilisateur ameliore pour vehicule tout terrain
GB2219559A (en) * 1988-06-08 1989-12-13 John Franklin Morse Stabilizer wheels on a three-wheeled wheelchair

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2215054A5 (fr) * 1973-01-23 1974-08-19 Folco Zambelli Gian Matteo
US4452327A (en) * 1980-11-06 1984-06-05 Mowat Donald J Motorized vehicle
US4488617A (en) * 1982-05-12 1984-12-18 Ateliers De La Motobecane Four-wheel vehicle
GB2124985A (en) * 1982-07-01 1984-02-29 Jones Edward Daniel Steerable drive unit for wheelchair
AU2833184A (en) * 1983-05-28 1984-11-29 Tsuchie, K. Wheel arrangement of bicycle
WO1989006117A1 (fr) * 1988-01-11 1989-07-13 Anschütz & Co. Gmbh Procede pour stabiliser un vehicule a roues a un seul essieu, et vehicule ainsi stabilise
WO1989008037A1 (fr) * 1988-02-29 1989-09-08 Kitner William M Stabilisateur ameliore pour vehicule tout terrain
GB2219559A (en) * 1988-06-08 1989-12-13 John Franklin Morse Stabilizer wheels on a three-wheeled wheelchair

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686507A1 (fr) * 1992-01-24 1993-07-30 Arnas Joseph Chassis pour fauteuil roulant motorise ou autre structure roulante motorisee et assise de fauteuil ou structure destinee a etre mise en place sur le chassis.
WO2003020194A1 (fr) * 2001-08-31 2003-03-13 Fredrick Charles Brown Vehicules de deplacement ameliores
GB2440322A (en) * 2006-07-25 2008-01-30 Advanced Vehicle Concepts Ltd A wheeled vehicle
GB2440322B (en) * 2006-07-25 2011-07-06 Advanced Vehicle Concepts Ltd Wheeled vehicle
US8172014B2 (en) 2006-07-25 2012-05-08 Advanced Vehicle Concepts Limited Wheeled vehicle
GB2492275A (en) * 2008-06-25 2012-12-26 Ahmad Amiri A stable narrow vehicle with stabilising arms
GB2492275B (en) * 2008-06-25 2013-02-06 Ahmad Amiri Stable narrow vehicle

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