EP0694496A1 - Repose-pieds amovible et siège motorisé pourvu d'un tel repose-pieds - Google Patents

Repose-pieds amovible et siège motorisé pourvu d'un tel repose-pieds Download PDF

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Publication number
EP0694496A1
EP0694496A1 EP95202035A EP95202035A EP0694496A1 EP 0694496 A1 EP0694496 A1 EP 0694496A1 EP 95202035 A EP95202035 A EP 95202035A EP 95202035 A EP95202035 A EP 95202035A EP 0694496 A1 EP0694496 A1 EP 0694496A1
Authority
EP
European Patent Office
Prior art keywords
footrest
frame
chair
moving means
pivot axis
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.)
Ceased
Application number
EP95202035A
Other languages
German (de)
English (en)
Inventor
Alex Ooms
Jeroen Klaasjan Verbrugge
Erich Altorf
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.)
Otto Ooms BV
Original Assignee
Otto Ooms BV
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 Otto Ooms BV filed Critical Otto Ooms BV
Publication of EP0694496A1 publication Critical patent/EP0694496A1/fr
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
    • 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
    • A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/06—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces
    • B66B9/08—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons

Definitions

  • the invention relates to a footrest for a chair comprising a frame, in particular for a chair unit for a chair lift, which footrest can be moved by moving means between an inoperative position and a substantially horizontal operative position.
  • a footrest of the above type in particular for a chair unit for a chair lift, is for example known from NL-A-9200437.
  • Chair lifts are used for moving in particular handicapped people in seated position on the chair unit between various floors of buildings.
  • Chair lifts are in particular installed along the staircase of existing houses when one of the occupants has difficulty walking or becomes handicapped.
  • the known footrest serves to support the feet of a person to be conveyed, and in addition to that functions to prevent said person from sliding off the seat while being conveyed.
  • the footrest can be pivoted between a horizontal operative position and a vertical inoperative position by means of a hinge construction, which is secured to the frame of the chair unit. During the pivoting movements of the footrest the free end thereof describes a quarter circle.
  • a considerable advantage of making the footrest capable of hinging movement is that when the chair lift is not being used, swinging back the footrest into a substantially vertical position will result in a widened stairway passage for the other occupants. Generally this passage is considerably reduced as a result of the presence of the chair lift.
  • the known construction also has a number of drawbacks, however.
  • the handicapped person In the first place the accessibility of the chair to a handicapped person is limited.
  • the handicapped person must first swing down the footrest before being able to sit down on the chair. In order to do so he must assume an uncomfortable bending position from a position in front of or beside the chair and bend forwards or sideways until he can operate the control mechanism of the footrest, or straddle uncomfortably while standing in front of the chair, so that the footrest can move between his lower legs.
  • These are difficult positions for users of chair lifts of this type.
  • the object of the present invention is to eliminate the above drawbacks and provide a footrest whose construction does not interfere with the accessibility of the chair and which provides an enhanced ease of operation of the footrest.
  • a footrest of the type referred to above which is characterized in that the moving means move the free end of the footrest in a path in a substantially horizontal plane when the footrest is being moved.
  • the free end of the footrest has a substantially horizontal component of movement, the ease of operation for the user is considerably enhanced. The user no longer needs to assume uncomfortable positions in order to move the footrest between the inoperative position and the operative position.
  • a first movement which can be made by the footrest under the influence of the moving means is a sliding or rotary movement of the entire footrest in a horizontal plane, whereby the inoperative position is a horizontal position under the frame of the chair or between the upright elements of said frame.
  • the moving means comprise first and second moving means, which each act on the footrest and the frame in different points of application and which cooperate with each other when moving the footrest, in such a manner that the end of the footrest located near the frame of the chair in the operative position moves substantially vertically along the frame and the other, free end of the footrest moves in a substantially horizontal direction.
  • this embodiment enables the person to be conveyed to assume a comfortable position in order to operate the footrest by means of a control mechanism. Furthermore it is possible for the said person to sit down on the chair first and then move the footrest to the operative position. In that case the footrests moves behind that person's legs and under his feet, so that the person to be conveyed only needs to lift his feet a little. This lifting movement is moreover facilitated by the "scooping" movement of the footrest.
  • said first moving means comprise a hinge construction, which construction comprises a first hinged arm, whose one end is secured to a substantially horizontal first pivot axis positioned at the bottom of the frame of the chair, and whose other end is connected with a second arm, in such manner as to be capable of pivoting movement about a second horizontal pivot axis, to which second arm the footrest is secured.
  • the footrest itself constitutes the second arm of the hinge construction of the first moving means.
  • the length of the footrest between the second horizontal pivot axis and the free end of the footrest is greater than the length of the first hinged arm.
  • said second moving means comprise a hinge construction comprising a third hinged arm, whose one end can pivot about a vertical pivot axis positioned near the frame and whose other end is pivotally connected, by means of a fourth vertical pivot axis, with the one end of a fourth hinged arm, the other end of said fourth hinged arm being pivotally connected with the footrest by means of a fifth vertical pivot axis and a sixth horizontal pivot axis.
  • the second moving means of the footrest according to the invention thus guide and direct the free end of the footrest in a path which lies in a horizontal plane.
  • said free end does not move upwards too much during the movement from the operative position to the inoperative position and vice versa.
  • said second moving means function to support the footrest in the operative position, so that it will not tilt about the second horizontal pivot axis under the influence of its own weight and/or the weight of the user.
  • the hinge constructions will be adapted to the safety requirements.
  • the third and fifth vertical pivot axis of the hinge construction of the second moving means are advantageously positioned in the area between the longitudinal axis and one side of the footrest.
  • a simple embodiment thereof comprises a piston/cylinder assembly, the piston of said assembly being connected with one hinged arm and the cylinder of said assembly being connected with the other hinged arm.
  • said moving means comprise a finite length of material, which is stretched between a first point of attachment, which does not move with respect to the frame, and a second point of attachment, which does not move with respect to the footrest, whereby the distance between said first point of attachment and the point of application of the first moving means on the footrest, and the distance between the second point of attachment and the point of application of the first moving means on the frame do not change when the footrest is being moved.
  • the finite length of material for example a length of chain or a cable, is stretched between two points of attachment, in such a manner that when the footrest is being moved the free end thereof will move in a substantially horizontal plane.
  • said finite length of material functions to keep the footrest horizontal in the operative position, transmitting the forces exerted thereon to the frame.
  • said finite length of material is stretched between the two points of attachment in such a manner that when the footrest is being moved from the operative position to the inoperative position, the end of said length of material connected with the footrest winds up on a pulley mounted on the second horizontal pivot axis and that the end of said material connected with the frame unwinds from a pulley mounted on the first horizontal pivot axis. If the second horizontal pivot axis of the first moving means is positioned correctly, said winding and unwinding of the finite length of material on and from the respective pulleys during the movement of the footrest will take place under the influence of the self-weight of the footrest.
  • pulleys it will of course also be possible to use other means whose axis coincides with the longitudinal axis of the respective pivot axes, such as sleeves, rings and the like.
  • the footrest may be locked in the operative position by means of a locking mechanism.
  • the first hinged arm and the part of the footrest that is positioned near the hinged arm in the operative position are advantageously provided with locking means, which lock the footrest in the operative position, and the second horizontal pivot axis is positioned in such manner as to be movable in the longitudinal direction of the hinged arm under the influence of pressure means with a view to operating the locking means.
  • the free end will first describe a small part of a circular motion during the movement of the footrest, whereupon the substantially horizontal movement of the free end will take place as soon as the locking engagement has been released.
  • the locking means may for example be a hook secured to the bottom side of the footrest, which hook engages a catch mounted on the hinged arm.
  • the moving means in particular the first horizontal hinged arm of the first moving means, are advantageously connected with a control mechanism.
  • This mechanism may be the same mechanism as used with the already existing chair units for chair lifts.
  • a mechanism of this type comprises a grip, which is connected with a system consisting of several rods.
  • the invention furthermore relates to a chair unit for a chair lift, comprising a frame which is movable along guide means, driving means for moving said frame, a seat part and a back support, said chair unit being provided with a footrest according to the invention.
  • Figures 1 and 2 show an embodiment of the footrest according to the invention in side view, whereby the footrest 1 is in the horizontal operative position.
  • the frame of a chair unit for a chair lift is as a whole indicated at 2.
  • the first moving means which move the end 3 of the footrest 1 positioned near the frame in the operative position substantially vertically along the frame 2 when moving the footrest in cooperation with the second moving means, comprise a first hinged arm 4, whose one end is fixedly connected with a first horizontal pivot axis 5 journalled in the frame 2.
  • This pivot axis 5 is in turn actuated by a control mechanism 6.
  • the construction and operation of said mechanism will not be discussed in detail herein, as they are sufficiently well known from the prior art.
  • the first hinged arm 4 is secured to the footrest 1 by means of a second horizontal pivot axis 7.
  • the footrest 1 forms the second arm of the hinge construction of the first moving means.
  • the second horizontal pivot axis 7 is offset from the centre of the footrest 1.
  • the second moving means which in use support the free end 3' of the footrest 1 and guide said free end 3' when the footrest is being moved, comprise a third hinged arm 8, whose one end can pivot about a third vertical pivot axis 9 located within the frame 2.
  • One end of a fourth hinged arm 10 is secured to the other end of the third hinged arm 8, capable of pivoting movement about a fourth vertical pivot axis 11.
  • a fifth vertical pivot axis 12 journalled in the footrest 1 constitutes, together with a sixth horizontal pivot axis 13, the pivot point for the other end of the fourth hinged arm 10.
  • Figure 1 shows a piston/cylinder assembly 14, which connects the two hinged arms 8 and 10. This assembly locks the hinge construction of the second moving means in the operative position and damps the downward movement of the moving means when the footrest is being moved.
  • Another means suitable for said locking and damping is for example a spring.
  • Figures 3 and 4 show an intermediate position of the embodiment of the footrest according to the invention shown in Figure 1. These Figures clearly illustrate that the ends 3 and 3' of the footrest describe a substantially vertical movement along the frame 2 and a horizontal movement in the direction of the frame, respectively. Furthermore it is apparent that when the footrest 1 terminates at the horizontal pivot axis 7, for example when the hinged arm is provided with a supporting part, the side of the footrest 1 directed towards the frame 2, which side is in this case positioned near the pivot axis 7, will make a movement which has a substantial horizontal component of movement. Also in that case the free end 3' will move in a horizontal path, however.
  • Figures 5 and 6 show the inoperative, vertical position of the footrest, whereby the hinge constructions of the first and second moving means are covered by the footrest.
  • FIG. 7 diagrammatically shows a second embodiment of the footrest according to the invention in three different positions.
  • the first moving means of this embodiment which are identical to those of the embodiment described above, are indicated by the same reference numerals.
  • This second embodiment is characterized by the simplicity of the second moving means in the shape of a finite length of material in the form of a cable 15, which is stretched between points of attachment 16 and 17.
  • Point of attachment 16 is a fixed point with respect to the footrest 1
  • point of attachment 17 is a fixed point with respect to the frame 2.
  • the distance between point of attachment, the point of application of the cable on the footrest and the point of application of the hinged arm 4 of the first moving means, which coincides with the horizontal pivot axis 7, does not change when the footrest is being moved.
  • the distance between point of attachment 17 and the first horizontal pivot axis 5 remains the same.
  • the cable 15 passes over a pulley 18 having a radius R, which is mounted on the second horizontal pivot axis 7.
  • the other end of the cable 15 passes over a pulley 19 having a radius 2R.
  • the footrest 1 which is inclined to tilt about the second horizontal pivot axis 7 under the influence of its self-weight, is retained in a horizontal position by the cable 15.
  • the cable 15 passes over a quarter of the circumference of the pulley 18.
  • the self-weight of the footrest 1 causes the cable 15 to wind up on the pulley 18.
  • a quarter of the circumference of disc 19 will unwind when the footrest is being moved, which length is wound up on half the circumference of disc 18.
  • Figure 8 shows a footrest corresponding with the one shown in Figure 7, whereby the footrest 1 is locked in the operative position by means of a hook 20 mounted under the footrest 1, said hook engaging a catch 21 present on the first hinged arm 4.
  • the various positions of the footrest 1 during its movement are diagrammatically illustrated.
  • the horizontal pivot axis 7 is movably accommodated in a slot 22 in the first hinged arm 4, in order to be able to release the hook 20.
  • a compression spring 23 is provided between a fixed point on the hinged arm 4 and the pivot axis 7. Furthermore the compression spring 23, in cooperation with the cable 15, keeps the footrest 1 horizontal in the operative position.
  • the free end 3' will first describe a small part of a circular motion in order to release the locking engagement between the footrest 1 and the hinged arm 4, after which the footrest 1 can pivot about the horizontal pivot axis 7.
  • the free end 3' will describe the substantially horizontal movement towards the frame (not shown).
  • a characterizing feature of the footrest according to the invention is the movement substantially made with a horizontal component of movement of the free end of the footrest when changing the position of the footrest.
  • the length of the footrest between said second horizontal pivot axis 7 and the free end 3' of the footrest 1 is greater than the length of said first hinged arm 4.
  • the third and fifth vertical pivot axes 9,12 of the hinge construction of said second moving means are positioned in the area between the longitudinal axis and one side of the footrest 1.
  • the third and fourth hinged arms 8,10 of the hinge construction of the second moving means are locked in the operative position by locking means.
  • said locking means comprise a piston/cylinder assembly 14, the piston of said assembly being connected with one hinged arm and the cylinder of said assembly being connected with the other hinged arm.
  • said moving means are actuated by a control mechanism 6.

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)
  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Passenger Equipment (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP95202035A 1994-07-29 1995-07-24 Repose-pieds amovible et siège motorisé pourvu d'un tel repose-pieds Ceased EP0694496A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9401242A NL9401242A (nl) 1994-07-29 1994-07-29 Verplaatsbare voetensteun en stoeleenheid voor een stoellift voorzien van een dergelijke voetensteun.
NL9401242 1994-07-29

Publications (1)

Publication Number Publication Date
EP0694496A1 true EP0694496A1 (fr) 1996-01-31

Family

ID=19864481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95202035A Ceased EP0694496A1 (fr) 1994-07-29 1995-07-24 Repose-pieds amovible et siège motorisé pourvu d'un tel repose-pieds

Country Status (2)

Country Link
EP (1) EP0694496A1 (fr)
NL (2) NL9401242A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368273A (en) * 2000-10-14 2002-05-01 Brian Haddon Retractable wheelchair leg support
EP1943928A1 (fr) * 2007-01-12 2008-07-16 Georg Dipl.-Ing. Appeltshauser Meubles destinés à s'asseoir
WO2023113864A1 (fr) * 2021-12-14 2023-06-22 Stryker Corporation Appareil de transport de patient avec repose-pieds escamotable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794381A (en) * 1971-10-26 1974-02-26 D Caldemeyer Footrest for reclining chair
DE3424284A1 (de) * 1983-06-30 1985-03-14 Takara Co., Inc., New York, N.Y. Zurueckziehbare beinstuetze fuer behandlungsstuehle, z.b. operationsstuehle
US4678229A (en) * 1986-03-25 1987-07-07 Henry Dreyfuss Associates Reclining chair
DE9113047U1 (de) * 1991-10-19 1992-02-27 Sanitätshaus Walther L.C. Müller GmbH & Co. KG, 2100 Hamburg Rollstuhl
DE4201349A1 (de) * 1992-01-20 1993-07-22 Casala Werke Carl Sasse Gmbh & Mehrzweck-sitzmoebel
NL9200437A (nl) 1992-03-09 1993-10-01 Brinkman Liftenfabriek Bv Trapliftinstallatie.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794381A (en) * 1971-10-26 1974-02-26 D Caldemeyer Footrest for reclining chair
DE3424284A1 (de) * 1983-06-30 1985-03-14 Takara Co., Inc., New York, N.Y. Zurueckziehbare beinstuetze fuer behandlungsstuehle, z.b. operationsstuehle
US4678229A (en) * 1986-03-25 1987-07-07 Henry Dreyfuss Associates Reclining chair
DE9113047U1 (de) * 1991-10-19 1992-02-27 Sanitätshaus Walther L.C. Müller GmbH & Co. KG, 2100 Hamburg Rollstuhl
DE4201349A1 (de) * 1992-01-20 1993-07-22 Casala Werke Carl Sasse Gmbh & Mehrzweck-sitzmoebel
NL9200437A (nl) 1992-03-09 1993-10-01 Brinkman Liftenfabriek Bv Trapliftinstallatie.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368273A (en) * 2000-10-14 2002-05-01 Brian Haddon Retractable wheelchair leg support
GB2368273B (en) * 2000-10-14 2002-10-16 Brian Haddon Wheelchairs
EP1943928A1 (fr) * 2007-01-12 2008-07-16 Georg Dipl.-Ing. Appeltshauser Meubles destinés à s'asseoir
WO2023113864A1 (fr) * 2021-12-14 2023-06-22 Stryker Corporation Appareil de transport de patient avec repose-pieds escamotable

Also Published As

Publication number Publication date
NL1000863C2 (en) 1996-07-05
NL9401242A (nl) 1996-03-01

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