EP0812585A2 - Rollstuhl - Google Patents

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Publication number
EP0812585A2
EP0812585A2 EP97202606A EP97202606A EP0812585A2 EP 0812585 A2 EP0812585 A2 EP 0812585A2 EP 97202606 A EP97202606 A EP 97202606A EP 97202606 A EP97202606 A EP 97202606A EP 0812585 A2 EP0812585 A2 EP 0812585A2
Authority
EP
European Patent Office
Prior art keywords
kerb
wheelchair
climber
main frame
foot rest
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.)
Withdrawn
Application number
EP97202606A
Other languages
English (en)
French (fr)
Other versions
EP0812585A3 (de
Inventor
Derek Alan Charles
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.)
SCANDINAVIAN MOBILITY UK Ltd
Original Assignee
SCANDINAVIAN MOBILITY UK Ltd
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 SCANDINAVIAN MOBILITY UK Ltd filed Critical SCANDINAVIAN MOBILITY UK Ltd
Publication of EP0812585A2 publication Critical patent/EP0812585A2/de
Publication of EP0812585A3 publication Critical patent/EP0812585A3/de
Withdrawn legal-status Critical Current

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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
    • A61G5/04—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
    • A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
    • 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
    • A61G5/1083—Quickly-removable 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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • 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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms
    • 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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet
    • 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • A61G2203/14—Joysticks
    • 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

Definitions

  • This invention relates to wheelchairs and more particularly to power driven unitary wheelchairs.
  • a wheelchair comprising a main frame having two front wheels, a battery pack and a drive unit, comprising two rear wheel units, each rear wheel unit being individually removably mountable on the main frame by means of quick release fastener means, and being releasably connectable to the battery pack.
  • each rear wheel unit is provided with a drive motor.
  • the frame incorporates longitudinal support members which extend horizontally when the chair is in the use position, each rear wheel unit being mountable on at least one support member by means of mutual insertion in the direction of extension of the at least one support member.
  • each rear wheel unit is mounted on two support members, the two members being vertically spaced apart when the chair is in the use position.
  • Each rear wheel unit may be releasably mountable on one of the two support members by means of a spring-loaded catch.
  • Each rear wheel unit may be mounted on the other of the two support members by means of a screw connection.
  • the spring-loaded catch is provided on the upper of the two support members.
  • the main frame is additionally provided with removably mountable back, seat, arms and foot rests.
  • a wheelchair comprising a number of components including a main frame having two front wheels, a battery pack, and two rear wheel units, each rear wheel unit being provided with a drive motor, wherein said components are detachable for dismantling the wheelchair into its component parts.
  • a wheelchair comprising a main frame having two front wheels, a battery pack, a drive unit comprising two rear wheel units, and two swinging quadrant kerb climbers, each kerb climber being adapted to be pivotable about a respective pivot joint between a first operative position and a second inoperative position wherein each pivot joint comprises a torsion bush.
  • the torsion bush is formed of an annular rubber sleeve held between inner and outer rigid cylindrical sleeves which may be made of metal.
  • Each kerb climber is preferably connected to one of said inner and outer cylindrical sleeves of a respective pivot joint, the other of said inner and outer sleeves being supported on the main frame.
  • Each pivot joint preferably additionally comprises locking means and biassing means for biassing its respective kerb climber to engage with said locking means to hold the respective kerb climber in the first or second position.
  • each kerb climber is connected to the inner cylindrical sleeve, the outer cylindrical sleeve being mounted on a foot rest which is removably mountable on the main frame.
  • a foot rest for releasably mounting on a power driven wheelchair, the foot rest comprising a support member, a foot plate and swinging quadrant kerb climber mounted on the support member at a pivot joint comprising a torsion bush, the kerb climber being pivotable about the joint between a first operative position and a second inoperative position.
  • FIG. 1 illustrates a typical power driven wheelchair comprising, in general, a main frame 10, a seat 12, a back 14, arms 16, front wheels 18 and rear wheels 20.
  • a battery pack 22 provides the power for two motors 24, one motor being associated with each rear wheel 20 to drive that rear wheel.
  • a control unit 26 supported on one of the arms 16 provides a stop/start switch 28 and a directional control lever 30.
  • Foot rest plates 32 are mounted on support members 34 for releasable attachment to the mainframe 10 by means of pins 36 and a latch assembly 38.
  • a strap 40 is provided between the support members 34 for preventing the feet of an occupant of the wheelchair from slipping down between the front wheels 18.
  • each rear wheel 20 and its associated drive motor 24 are supported on a rear frame portion 42 releasbly connectable to the main frame by way of a spring-biassed pin 44 and a screw locking connection 46.
  • the rear frame portion can be seen in more detail in Figure 2, and comprises a straight tube 48 and an angled tube 50 attached to the straight tube 48, by welding or any other suitable means, at one end of one leg 52 of the angled tube.
  • the other leg 54 of the angled tube extends parallel to the straight tube 48.
  • a plate 56 (see Figure 1) is connected to the rear frame portion 42 by means of bolts through holes 58 in the angled tube 50 and by means of mounting bracket 60 fixed to the straight tube 48.
  • the plate 56 supports both a rear wheel 20 and its associated drive motor 24, such that the motor and rear wheel form a single unit.
  • a further support member 62 may extend from the straight tube 48 to provide support for a rear anti-ripping wheel 64.
  • the main frame has rearwardly extending members 66 and 68 positioned to align with tubes 48 and 54 respectively such that the rear frame portion 42 can be slid over members 66 and 68.
  • the spring-biassed pin 44 on member 66 is biassed to pass through hole 69 in the tube leg 54 to lock the rear frame portion 42 to the main frame 10. Because the connection between the rear frame portion and the main frame is formed by horizontally cooperating members and tubes, the connection is very firm and the spring-biassed pin is sufficient to maintain the connection. However, in order to provide a yet stronger connection with an additional degree of security, the screw locking connection 46 should also be utilised.
  • FIG. 3 A sectional view of the locking connection 46 is shown in Figure 3.
  • the rearwardly extending member 66 of the main frame is fitted with a plug 70 having a screw-threaded central bore 72.
  • the locking connection comprises a cylindrical cap 74 having a knurled outer surface for ease of gripping, the cylindrical cap having an internal threaded stem 76.
  • a washer 78 is slid over the threaded stem followed by a stepped bush 80.
  • a nut 82 is then threaded on to the stem 76 and set with a preselected gap between the nut 82 and the bush 80.
  • the bush 80 is chosen such that it is a press fit in the end of tube 48.
  • the cap 74 can then be turned to screw the threaded stem into the bore 72 to lock the rear frame portion 42 to the main frame 10.
  • the rear frame portion 42, the rear wheel 20 and motor 24 are thus readily removable and reconnectable to the main frame by means of the spring-biassed pin 44 and the locking connection 46. Because the rearwardly extending member 66 extends further than the rearwardly extending member 68, it is easy for the tube 48 to be first located on member 66, the tube 54 then being aligned with member 68 for full connection.
  • each of the rear wheel units (rear frame portion 42, rear wheel 20 and motor 24) separately means that the wheelchair can be more easily carried or fitted into smaller spaces for storage or transportation, for example in the boot of a car.
  • the arms 16, the back 14, the seat 12 and the battery pack 22 are each individually removable from the main frame 10, and the main frame itself is foldable to occupy minimum storage space.
  • each foot rest support member 34 also provides support for a swinging quadrant kerb climber 100.
  • the kerb climbers are also removably mountable on the wheelchair.
  • Each kerb climber comprises an arm 102 and an arcuate foot 104, the foot being provided with a rubber shoe 106 in the conventional way.
  • the arm 102 is connected to the support member 34 at a pivot joint 108 to be described in more detail hereinafter.
  • the foot 104 will meet the kerb before the wheels and act to lift the front wheels smoothly over the kerb, as is already well known.
  • the present invention allows the kerb climbers to be moved from the operative to the inoperative position as shown in Figure 4B when the kerb climbing facility is not required e.g. indoors.
  • the pivot joint 108 comprises a cylindrical housing 110 fixed to the support member 34 by welding or any other suitable means.
  • a further cylindrical housing 112 is formed at the proximal end of the arm 102, having substantially the same outer diameter as housing 110 and having an extending portion 114 of smaller diameter which fits inside housing 110.
  • a torsion bush connector 116 fits inside housing 110.
  • the connector 116 has protruding stem 118 with flats 120 which fits through a cooperating aperture in housing 112, such that the stem 118 engages with the housing 112 and rotates with the housing 112.
  • a nut 122 engages with screw threads 124 on the stem 118 to secure the connector 116 inside housings 110 and 112.
  • a pair of diametrically opposed slots 126 are provided in the free end of the housing 110, and two angularly spaced apart pairs of diametrically opposed slots 128 and 130 are provided in the corresponding free end of connector 116.
  • a locating or locking strip 132 locates in the pair of slots 126 in the housing and in one of the two pairs of slots in the connector.
  • An end cover 134 fits behind the locking strip 132 and is held in place by a pin 136 which extends through the locking strip, through the connector and into the interior of housing 112. Alternatively, the locking strip could be held to the end cover by welding or in any other suitable way.
  • a helical spring 138 is located between the nut 122 and a further nut 140 fitted on to the threaded end 142 of the pin 136.
  • a press fit plug 144 is fitted into the end of the housing 122 to cover the internal parts of the pivot joint.
  • the connector 116 comprises an inner sleeve 146 extending to form the stem 118, and an outer sleeve 148, incorporating the slots 128 and 130, the inner and outer sleeves being connected together by means of an annular rubber bush 150.
  • any rotary movement of the kerb climber arm 102 about the axis 152 of the pivot joint rotates housing 112 and thus rotates inner sleeve 146 via flats 120.
  • the locking strip 132 is located in the slots on both the outer sleeve 148 and on the housing 110 thus locking the outer sleeve to the housing to prevent rotation of the outer sleeve.
  • the rubber bush 150 between the inner and outer sleeves 146 and 148 acts as a resilient torsion member resisting excessive rotation of the inner sleeve but permitting about 45 degrees of rotation between the inner and outer sleeves when the arm 102 rotates during kerb climbing, the rubber torsion bush then restoring the arm 102 to its operative rest position after kerb climbing is completed.
  • the locking strip 132 is located in slots 126 on the housing 110 and in slots 128 in the connector 116, as shown in Figure 7, where the end cover 134 has been removed.
  • the arm and housing 112 are pulled longitudinally along axis 152 in the direction of arrow 154 against the bias of spring 138. This also pulls connector 116 in the direction of arrow 154 since the connector is joined to the housing 112 by the nut 122.
  • kerb climbers of the present invention have been described with reference to a unitary collapsible wheelchair, clearly they could be fitted with only minor modifications to any other power-driven wheelchair.
  • the embodiment of the invention described above is particularly preferred since it provides a wheelchair which can be fully dismantled into easily portable component parts for storage and transportation.

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)
  • Handcart (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
EP97202606A 1993-03-22 1994-03-22 Rollstuhl Withdrawn EP0812585A3 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9305921 1993-03-22
GB9305921A GB2276361B (en) 1993-03-22 1993-03-22 Wheelchair
EP94302017A EP0617943B1 (de) 1993-03-22 1994-03-22 Rollstuhl

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP94302017A Division EP0617943B1 (de) 1993-03-22 1994-03-22 Rollstuhl
EP94302017.2 Division 1994-03-22

Publications (2)

Publication Number Publication Date
EP0812585A2 true EP0812585A2 (de) 1997-12-17
EP0812585A3 EP0812585A3 (de) 1997-12-29

Family

ID=10732530

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97202606A Withdrawn EP0812585A3 (de) 1993-03-22 1994-03-22 Rollstuhl
EP94302017A Expired - Lifetime EP0617943B1 (de) 1993-03-22 1994-03-22 Rollstuhl

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP94302017A Expired - Lifetime EP0617943B1 (de) 1993-03-22 1994-03-22 Rollstuhl

Country Status (3)

Country Link
EP (2) EP0812585A3 (de)
DE (1) DE69410327D1 (de)
GB (2) GB2276361B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20110170A1 (it) * 2011-05-25 2012-11-26 Rinaldi Fabio Sedia a rotelle per disabili pieghevole e divisibile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110638481B (zh) * 2019-09-26 2023-04-11 重庆医科大学附属永川医院 一种钡餐造影辅助装置
CN113425561B (zh) * 2021-06-23 2022-10-25 淄博市中心医院 一种康复科助行器

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1506571A (en) * 1975-05-16 1978-04-05 Biddle Eng Co Ltd Motorising of wheelchairs
US4067409A (en) * 1976-05-24 1978-01-10 Dynell Electronics Corporation Wheel chair arrangement
US4199036A (en) * 1976-07-06 1980-04-22 Instrument Components Co., Inc. Wheel chair
GB1569166A (en) * 1976-12-09 1980-06-11 Vessa Ltd Attachments enabeling vehicles to negotiate obstacles
GB8307295D0 (en) * 1983-03-16 1983-04-20 Oec Europ Ltd Apparatus
GB2145983B (en) * 1983-09-02 1987-05-20 Biddle Eng Co Ltd Device to assist a wheelchair surmount steps kerbs and the like
GB2192595A (en) * 1986-07-17 1988-01-20 Everest & Jennings Limited Kerb climbing device for a wheeled vehicle
GB8700686D0 (en) * 1987-01-13 1987-02-18 Spastics Soc Kerb climbing device
GB2210589A (en) * 1987-10-06 1989-06-14 Spastics Soc Improvements in foldable electric wheelchairs
GB2227462B (en) * 1988-11-16 1993-02-10 Sunrise Medical Ltd Vehicle
GB8922589D0 (en) * 1989-10-06 1989-11-22 Booster Electric Vehicles Limi Improvements in pavement vehicles
DE4127257A1 (de) * 1991-08-17 1993-02-18 Haas & Alber Haustechnik Und A Kleinfahrzeug, insbesondere rollstuhl mit faltbarem stuhlgestell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20110170A1 (it) * 2011-05-25 2012-11-26 Rinaldi Fabio Sedia a rotelle per disabili pieghevole e divisibile

Also Published As

Publication number Publication date
GB2302673B (en) 1997-04-02
EP0617943A3 (de) 1994-12-21
EP0617943A2 (de) 1994-10-05
GB2276361B (en) 1997-04-02
DE69410327D1 (de) 1998-06-25
EP0812585A3 (de) 1997-12-29
GB2302673A (en) 1997-01-29
EP0617943B1 (de) 1998-05-20
GB9617106D0 (en) 1996-09-25
GB9305921D0 (en) 1993-05-12
GB2276361A (en) 1994-09-28

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