EP1186284A1 - Fauteuil roulant avec dispositif pour monter des escaliers - Google Patents

Fauteuil roulant avec dispositif pour monter des escaliers Download PDF

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Publication number
EP1186284A1
EP1186284A1 EP00119650A EP00119650A EP1186284A1 EP 1186284 A1 EP1186284 A1 EP 1186284A1 EP 00119650 A EP00119650 A EP 00119650A EP 00119650 A EP00119650 A EP 00119650A EP 1186284 A1 EP1186284 A1 EP 1186284A1
Authority
EP
European Patent Office
Prior art keywords
wheelchair
drive
drive unit
impeller
wheelchair according
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Withdrawn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
EP00119650A
Other languages
German (de)
English (en)
Inventor
Gisbert Weiss
Thomas Schaal
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.)
GISBERT WEISS GmbH
Original Assignee
GISBERT WEISS 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 GISBERT WEISS GmbH filed Critical GISBERT WEISS GmbH
Priority to EP00119650A priority Critical patent/EP1186284A1/fr
Publication of EP1186284A1 publication Critical patent/EP1186284A1/fr
Withdrawn legal-status Critical Current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
    • A61G5/06—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
    • A61G5/061—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 for climbing stairs
    • 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
    • A61G5/063—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 with eccentrically mounted 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/72—General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention
    • A61G2203/726—General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention for automatic deactivation, e.g. deactivation of actuators or motors
    • 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

Definitions

  • the invention relates to a wheelchair specified in the preamble of claim 1 Art.
  • the two impeller axles on one side of the drive unit on a crank arm each arranged in the drive unit about a distance from the impeller axis stationary and parallel rising axis is rotatable.
  • the two Riser axes lie on a plane that is inclined to the ground and carry drive pinions, that are wrapped in a common chain.
  • a stairway transport device for loads has a load bearing surface and a swing arm on both sides, on the two with Pushbuttons controlled brake devices are equipped with rotatable wheels are.
  • a common drive motor drives both wings when climbing stairs over at least 360 °, so that one impeller over the other on each side raised to the next step and then with another turn of the Swing the other wheel to the next but one step.
  • stair climbing devices cannot be combined with a wheelchair suitable.
  • the transport device must be pushed or pulled on level ground become.
  • the invention has for its object a wheelchair of the type mentioned to create that can not only perform a stair climbing function, but on level surface using the one provided for the stair climbing function Mechanism driven drives.
  • the first drive connection is used to climb the stairs to the two To drive vibrations synchronously in the ascending or descending direction by means of the drive motor. While the one wheel stands on the step surface, the swing arm pivoted about the adjusting axis and the axis of the standing impeller until the other impeller over one impeller on top of the step surface of the next higher or next lower level is moved.
  • the wheelchair makes an arc around the standing impeller axis with the distance between the standing Impeller axis and the positioning axis as a radius. Should the wheelchair be level Drive the floor, the drive movement is via the second drive connection transferred to at least one impeller while the wings either blocked or freely pivotable (for ground adaptation). Despite being able to The wheelchair, led by a wheelchair operator, can be overcome stairs the wheelchair is comfortable on level ground and either by the wheelchair operator or drive by the wheelchair user.
  • the wheelchair can be a standard manual wheelchair attached to the drive unit is removably attached, for example instead of the normal rear wheels.
  • the attached one Drive unit increases the user comfort of the wheelchair considerably.
  • wheelchairs can also be converted at any time.
  • a luxury version of the wheelchair is expedient, in which the drive unit is integrated as an integral part.
  • the drive unit is integrated as an integral part.
  • the wheelchair user can, however, when driving on level ground driving yourself, for example with a joystick control, forwards and backwards, steer and the like. Without being dependent on a wheelchair operator.
  • Button-controlled braking devices increase the safety standard when climbing stairs, regardless of the respective rotational position of the wings.
  • the braking devices can be opened for driving switch off level floor.
  • the relative dimensions of the swing arms, the impellers and the impeller diameter are expedient and wheel spacings selected so that specially standard stair treads can be overcome easily and with a high security standard. That in each case a next step surface moving impeller stops from the step edge of this step surface a minimum safety distance to keep the operational risk as low as possible to keep.
  • Optimally few individual components are required for stair climbing and driving functions, if a common drive motor is used. It is about expediently an electric motor that can be reversed in its direction and, if necessary is speed controllable. There is a power supply for the drive motor Battery provided in the drive unit to be independent of an external power supply to be.
  • drive motors can be advantageous for greater user comfort be, for example, separate drive motors for the stair climbing function and the Driving function and / or for precise steering when driving, and the like.
  • One drive motor per swing arm is expedient, these drive motors for example be electrically coupled or synchronized for the stair climbing function, as well as driving straight forward or backward while Steering movements of the wheelchair via speed and / or differences in direction of rotation of the two drive motors are controlled, advantageously with one Individual driving motion and driving-steering motion control with a joystick, which can be operated by the wheelchair user himself.
  • the manual gearbox can be arranged on the hollow shaft in a small space, which connects the two rockers and rotates around the adjusting axis.
  • a Coupling sleeve closes the first or the second drive connection depending on the shift position. The idle position is also switched via the clutch sleeve.
  • Engaging the braking device of the respective wheel becomes functionally reliable and structurally easily accomplished by means of the button, which when climbing stairs Scan step surfaces or step edges and apply braking if the There is a danger of the safety distance between the contact point of the respective Impeller and the step edge.
  • a braking surface of the braking device is expediently incorporated into the impeller.
  • a counter braking surface cooperates with the braking surface, via a knee joint and a tightening angle during a running movement of the impeller the braking progressively increases. In the opposite direction of rotation, however, the braking is released automatically and is the movement resistance between the braking surface and the counter braking surface optimally low.
  • a leaf spring that can be attached to the brake lever is structurally simple. The activation or Deactivating the braking devices is advisable by the wheelchair operator performed.
  • Bowden cables could also be provided which activated the brake levers in the Position and centrally either by the wheelchair operator or by the wheelchair user be operated.
  • the convenience of use is increased when the release device is effective is coupled with the gearbox in such a way that when setting the stair-climbing drive connection the reverse braking devices automatically activated and at Setting the drive-drive connection can be deactivated automatically.
  • Chain or toothed belt drives are also advantageous for travel movements. in principle it is sufficient to drive a single impeller of the drive unit. This does not rule out, however, at least one impeller on each side of the drive unit to drive, or even all designated wheels.
  • the swing arm is expediently a molded metal part, which the bearings for Includes impellers and a connection for the hollow shaft. Both can swing be identical.
  • the bearings for Includes impellers and a connection for the hollow shaft can swing be identical.
  • Expediently provided covers so that the wheelchair can be easily moved can also be driven outdoors.
  • the drive unit is useful instead of the rear wheels of the wheelchair used.
  • connection areas are useful between the wheelchair and the drive unit to ensure stable power transmission.
  • the drive unit is expediently covered by a housing on which the wheelchair can be fastened or fastened and that protects the internal components and gives the wheelchair equipped with it a pleasant overall impression.
  • the the drive unit belonging guide bracket or a guide arrangement for The wheelchair operator is ergonomically positioned to accommodate the wheelchair operator to enable easy balancing of the wheelchair when climbing stairs. Out For safety reasons, it is advisable to climb the stairs in the ascending or descending direction always to be carried out with the wheelchair's entry side facing down the stairs, the wheelchair operator is always above the wheelchair.
  • the wheelchair R can be a common one manual wheelchair on which the drive unit A instead of the rear wheels, e.g. is attached to a rear wheel connection point 1 and additionally in support points 2.
  • the drive unit A (FIG. 3) can be an integral part of a luxury wheelchair R be.
  • the designated 7 frame of the wheelchair R, the conventional front wheels 8 and usual operating handles 6 is connected to the drive unit A, that a diagonally upward guide bracket 3 of the drive unit A with Guide handles 4 is arranged on the rear of the wheelchair R.
  • at least one electric drive motor M is provided, for example via an actuation 5 on the guide handles 4 and / or an actuation 5 ' is controllable on the wheelchair R.
  • spaced wheels L rotatable about wheel axes 13.
  • the two wheels L each Side are arranged on a common rocker arm S, which is in the drive unit A about a horizontal adjusting axis X parallel to the impeller axes 13 over at least 360 ° by means of the drive motor M is rotatable. Every wheel has one Have braking device Z, which is controlled by a button T.
  • the drive unit A are at least two optionally adjustable drive connections from the drive motor M to the rocker S (riser drive connection) and from the drive motor M to at least one impeller L (drive-drive connection) and possibly still an idle position, in which the wheels L and / or the rockers S are freely rotatable.
  • Fig. 1 e.g. BT stairs descending two steps with step surfaces 9, step edges 11 and step end faces 10 are shown.
  • the wheelchair operator balances the wheelchair R just descending so that the front wheels 8 are raised are.
  • One impeller L on one side stands straight on the step surface 9 an upper tier.
  • the two wheels L by turning the rocker arms S counterclockwise around the Adjustment axis X of drive unit A above the upstanding impellers have been moved to the step surface 9 of the next lower step, the Swing S also around the impeller axis 13 of the standing impeller (Contact point 12) has rotated.
  • the impeller diameter, the center distance the wheels and the swingarm strength chosen so that at least at standard levels the impeller transported to the next step surface with its contact point 12 'a safety distance Y from the lying step edge 11 who e.g. corresponds to at least a quarter of the diameter of the impeller.
  • the safety distance Y is monitored by the braking device Z this Impeller and the associated button T.
  • the above impellers are braked shown because the braking device Z by the over the upper edge of the step 11 button T is depressed. Now move on to the next step the lower wheels L so that they roll to the front step edge 11, then the reverse braking device Z is engaged when the buttons T of these wheels perform a certain stroke down over the lower step edge 11.
  • the wheelchair R is by means of the drive device A on a level floor B driven forward or backward (double arrow 14).
  • the driving speed leaves adjust by regulating the engine speed. This can be done by the wheelchair user be made on the actuator 5 after by means of a selector 16 (control lever or pedal) from the riser drive connection to the drive drive connection has been switched. Alternatively, the wheelchair user perform driving control even on its actuation 5 'and by means of the front wheels 8 or steer a steering device, not shown.
  • a release device, not shown in FIGS. 1 and 2, for the braking devices Z has it deactivated. This is in Fig. 2 by the raised passive position Button T indicated.
  • the swing arm S can freely around the Swivel the adjustment axis X so that both wheels L on each side on the floor B get up.
  • the drive unit A has more than one drive motor M, M1 provided, for example, to also make steering movements over the To be able to control impellers, e.g. due to speed differences between the impellers L on the left and on the right side of the drive unit A, or to the Climbing stairs and other, appropriately designed drive motors for driving use.
  • a drive motor is provided for each rocker, which is optionally for the swing arm movement and the impeller drive are responsible.
  • the actuator 5 ' for the wheelchair user it allows movement in the direction of arrows 14 to carry out, i.e. forward or backward, and also steering movements to everyone Page.
  • the actuator 5 ' should be designed like a joystick, the one enables very sensitive and precise control.
  • the Fig. 3 could swing on S (dash-dotted lines at S ') for driving flat ground are inclined so that only the rear wheels L and the front wheels 8 run on the floor. Because in this case the steering movements over the drive unit A can be controlled, the front wheels can be 8 trailing wheels.
  • An actuator for climbing stairs and for steering on level ground is for the Wheelchair operator provided at the rear of the wheelchair.
  • FIG. 4 are structural requirements for the drive connections and the braking devices Z shown, also on FIG. 5 (a side view), 6 (a rear view in FIG. 4 from the right) and FIG. 7 (a side view, partially in section, an impeller on an enlarged scale).
  • each impeller L with a hub 18 via bearing 17 in a version of the Swing arm S mounted e.g. is a molded metal part.
  • On at least one hub 18 (in Fig. 4 in both hubs 18 of the upper rocker S) is a 20 wrapped around a chain Sprocket 19 arranged in a rotationally fixed manner, which via a deflection wheel 21
  • Drive sprocket 22 runs on a drive tube 23.
  • the drive tube 23 is in bearings 27 rotatably mounted in a housing 40 of the drive unit A and takes in bearings 24 a hollow shaft 26 rigidly connecting the rockers S.
  • the driving tube 23 carries an external ring gear 25, which lies within a coupling sleeve 49, the axial spaced internal sprockets 52 and 50.
  • the braking device Z shown in FIGS. 4, 5 and 7 for each impeller has one with the protruding end of the impeller shaft 32 rotatably connected brake carrier 33, which contains a knee joint 34 at a distance from the impeller axis 32, in which a brake lever 35 is pivotable.
  • the brake lever 35 carries at the free end the button T in the form of a rotatably mounted wheel 36.
  • a brake block 37 is provided with a counter braking surface 39, which is against a Impeller axis 32 concentric cylindrical braking surface 38 of the impeller L acts.
  • the impeller L has a solid rubber or a pneumatic tire 22. Between the counter braking surface 37 and the braking surface 38 is e.g.
  • a Bowden cable could also be installed on the brake carrier 33 is supported and extends to the brake lever 35 to either this Area of the guide bracket 3 or from the frame 7 of the wheelchair between the brake ready position shown in FIG. 7 and the one indicated in FIG. 2 Disengage to adjust, in which all braking devices Z are deactivated.
  • the button T holds the counter braking surface on level ground or on the step surface 9 39 lifted off the braking surface 38. Rolls the wheel L in Fig. 7 in the direction of Arrow on the step surface 9, i.e. left from the position shown, then device the button T over the step edge 11 until it is supported by the biasing spring 42 the knee joint 34 is shifted counterclockwise.
  • the counter braking surface 39 lies on the braking surface 38, which, thanks to the tightening angle ⁇ , makes an immediate Braking starts, which prevents the contact point 12 of the impeller L Safety distance Y falls below. (e.g. about a quarter of the diameter of the Impeller L). Rolling in the opposite direction is possible, e.g. around to push the wheelchair from this critical position to a safe position.
  • the braking torque exerted on the brake carrier 33 is via the impeller axis 32 and the chain 29 and the brake sprocket 28 in the housing 40 of the drive unit A. initiated.
  • Each rocker is non-rotatably in the area of a connection 41 with the hollow shaft 26 screwed or welded.
  • the output shaft of the drive motor M enters Sprocket 45, which is connected via a chain 46 to a tubular carrying a sprocket Toothed carrier 47 is coupled, which is rotatably mounted on the hollow shaft 26 in bearings 54 is.
  • the toothed carrier 47 has an extension 48 which fits into the coupling sleeve 49 engages and carries an outer ring gear 51, which with the inner ring gear 50 of the Coupling sleeve 49 is permanently engaged.
  • the coupling sleeve 49 can be in Move in the direction of the positioning axis X.
  • a ring carrier 53 is non-rotatably fixed and has an external ring gear 56.
  • a driver 57 which has an adjusting lever 58 is connected to the switch 16.
  • the actuating lever 58 is (FIG. 6) around a housing-fixed Swivel pin 59 can be swung back and forth.
  • the switch 16 leaves itself in a backdrop 61 of a backdrop support 60 in different pivot positions of the actuating lever 58 determine the different displacement positions of the coupling sleeve Define 49 along the positioning axis X.
  • the above components form a gearbox G of the drive unit A.
  • FIG. 4 shows the neutral position of the manual transmission G.
  • the internal sprockets 52 and 50 of the coupling sleeve 49 do not mesh with any of the external ring gears 25 and 56.
  • the coupling sleeve 49 is only over the inner ring gear 50 with the outer ring gear 51 of the tooth carrier 47, 48 coupled.
  • the hollow shaft 26 with the rockers S and the impellers L can also be rotated. If the changeover switch from the in Fig. 6 shown position in the backdrop 61, e.g. down in Fig. 4, the Coupling sleeve 49 moved until the inner ring gear 50 with the outer ring gear 56 is engaged. A rotary movement of the drive motor M is applied to the hollow shaft 26 transmitted, which rotates the rocker S around the adjusting axis X.
  • FIG. 5 illustrates the arrangement of the various chain drives with the chains 46, 20 and 29 in the drive unit A.
  • From the drive motor M to the hollow shaft 26 is a translation provided for slow, while for the driving-drive connection too a ratio of about 1: 1 can be provided for the at least one sprocket 19 can.
  • the deflection wheels 30, 21 have the task of ensuring favorable wrap angles.
  • toothed belt drives could be provided.
  • the rockers In order to set the swingarm S for driving on level ground until only the e.g. stand up rear wheels, could be a blocking or braking device, not shown be provided, the rockers, e.g. via the drive motor M and the ring carrier 52 are brought into the desired position.
  • the diameter the wheels L could be larger than shown to increase the ride comfort.
  • the center distance of the wheels on each side should only be chosen as large (to provide good comfort when climbing stairs) as it is easy to overcome of standard levels is currently needed.
  • For very large wheels could each on their common rocker S in the direction of the actuating axis X be offset from each other so that their outer diameters overlap.
  • the wheelchair R is with the drive unit A in several support or fastening points connected.
  • the drive unit as a retrofit kit for one usual manual wheelchair is intended
  • several support and attachment points e.g. provided on the housing 40 of the drive unit A, so that the drive unit is compatible with different wheelchair types and one as Relative position between the drive unit and the wheelchair felt comfortable R can be selected.
  • the guide bracket 3 could be in its inclined position relative to the drive unit A to be adjustable.
EP00119650A 2000-09-08 2000-09-08 Fauteuil roulant avec dispositif pour monter des escaliers Withdrawn EP1186284A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00119650A EP1186284A1 (fr) 2000-09-08 2000-09-08 Fauteuil roulant avec dispositif pour monter des escaliers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00119650A EP1186284A1 (fr) 2000-09-08 2000-09-08 Fauteuil roulant avec dispositif pour monter des escaliers

Publications (1)

Publication Number Publication Date
EP1186284A1 true EP1186284A1 (fr) 2002-03-13

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EP00119650A Withdrawn EP1186284A1 (fr) 2000-09-08 2000-09-08 Fauteuil roulant avec dispositif pour monter des escaliers

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EP (1) EP1186284A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052253A1 (de) 2009-11-06 2011-05-12 Manfred Hoffmann Rollstuhl zum Treppensteigen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709772A (en) * 1985-01-31 1987-12-01 Pierre Brunet Motorized moving device
EP0287857A2 (fr) * 1987-04-23 1988-10-26 HAAS & ALBER Haustechnik und Apparatebau GmbH Dispositif pour monter les escaliers, particulièrement pour les fauteuils de malades
EP0697322A1 (fr) * 1994-08-17 1996-02-21 Alber Antriebstechnik GmbH Dispositif de transport pouvant monter des escaliers
WO1996023478A1 (fr) * 1995-02-03 1996-08-08 Deka Products Limited Partnership Vehicules et procedes de transport
DE19737339C1 (de) * 1997-08-27 1998-10-29 Hartmut Belger Fahrbare Transporteinrichtung zur Überwindung von Stufen
DE19912932C1 (de) * 1999-03-22 2000-08-17 Alber Ulrich Gmbh & Co Kg Treppensteigvorrichtung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709772A (en) * 1985-01-31 1987-12-01 Pierre Brunet Motorized moving device
EP0287857A2 (fr) * 1987-04-23 1988-10-26 HAAS & ALBER Haustechnik und Apparatebau GmbH Dispositif pour monter les escaliers, particulièrement pour les fauteuils de malades
DE3713564A1 (de) * 1987-04-23 1988-11-10 Haas & Alber Haustechnik Und A Treppensteigvorrichtung, beispielsweise fuer rollstuehle fuer gehunfaehige
DE3713564C2 (fr) 1987-04-23 1989-05-24 Haas & Alber Haustechnik Und Apparatebau Gmbh, 7470 Albstadt, De
EP0697322A1 (fr) * 1994-08-17 1996-02-21 Alber Antriebstechnik GmbH Dispositif de transport pouvant monter des escaliers
DE4429149A1 (de) 1994-08-17 1996-02-29 Alber Antriebstechnik Gmbh Treppengängiges Transportgerät
WO1996023478A1 (fr) * 1995-02-03 1996-08-08 Deka Products Limited Partnership Vehicules et procedes de transport
DE19737339C1 (de) * 1997-08-27 1998-10-29 Hartmut Belger Fahrbare Transporteinrichtung zur Überwindung von Stufen
DE19912932C1 (de) * 1999-03-22 2000-08-17 Alber Ulrich Gmbh & Co Kg Treppensteigvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052253A1 (de) 2009-11-06 2011-05-12 Manfred Hoffmann Rollstuhl zum Treppensteigen

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