WO1981001096A1 - Ensemble formant pupitre pour une chaise roulante ou autre - Google Patents

Ensemble formant pupitre pour une chaise roulante ou autre Download PDF

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Publication number
WO1981001096A1
WO1981001096A1 PCT/US1980/001397 US8001397W WO8101096A1 WO 1981001096 A1 WO1981001096 A1 WO 1981001096A1 US 8001397 W US8001397 W US 8001397W WO 8101096 A1 WO8101096 A1 WO 8101096A1
Authority
WO
WIPO (PCT)
Prior art keywords
desk
wheelchair
assembly
desk top
seat
Prior art date
Application number
PCT/US1980/001397
Other languages
English (en)
Inventor
R Hamilton
Original Assignee
R Hamilton
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 R Hamilton filed Critical R Hamilton
Publication of WO1981001096A1 publication Critical patent/WO1981001096A1/fr

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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
    • A47C7/62—Accessories for chairs
    • A47C7/68—Arm-rest tables ; or back-rest tables
    • 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
    • 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
    • A61G5/1094—Tables, working plates or trays

Definitions

  • Both wheelchai r and invalid chairs have been constructed which include tray or writing desk assemblies. Many of the trays which have been provided on invalid chairs , however , are too bulky for mounting to and use on a wheelchair. Accordingly, wheelchair-mounted trays tend ei ther to be undes i rably small o r so bulky that they must be removed and stor ed apar t f rom the chai r , of en by an attendant .
  • United States Patent No. 3,999,798 is typical of tray assembly that is mounted to a wheelchair and is foldable to a compact stored position along the side of the chair.
  • the tray of U.S. Patent No. 3,999,798 is relatively small, enabling the same to be stored in a location which is almos entirely in advance of the wheelchair drive wheels.
  • Trays or desk top structures which are designed t be attached to the wheelchair arm structure in a manner similar to the tray on a baby's highchair have the further negative psychological impact on the user of suggesting tha the disabled person is as helpless as an infant. This is coupled with the inherent awkwardness of such removable trays and the likelihood that they will often not be available when they are needed.
  • DISCLOSURE OF INVENTION Accordingly, it is an object of the present invention to provide a desk assembly for mounting to a wheelchair or the like which can be collapsed to a compact condition for storage on the wheelchair and deployed by the disabled person without assistance to provide a relatively large and useful desk top or tray across the lap of the disabled person.
  • Still a further object of the present invention is to provide a desk assembly for mounting to a wheelchair which is formed to enable selective positioning of the desk top in sloped or horizontal orientations.
  • a further object of the present invention is to provide a desk assembly for mounting to a wheelchair that can be moved toward or away from the wheelchair user.
  • Another object of the present invention is to provide a combination wheelchair and desk assembly which is relatively inexpensive to manufacture, easy to operate, durable and requires a minimum of maintenance.
  • the desk assembly of the present invention includes desk top means, mounting means formed to mount the desk top means to a side of a wheelchair, invalid chair or the like, and pivot means coupling said desk top means to the remainder of said desk assembly and formed for movement of said desk top means to and from a deployed position extending across and above the seat of the wheelchair and a stored position proximate a side of the wheelchair.
  • the pivot means is formed for movement of the desk top to a stored position at a location at which an armrest structure for t wheelchair would conventionally be positioned.
  • the desk t is formed for selective collapsing to relatively compact size configuraion for positioning in the stored position between the wheelchair seat and the drive wheels of the wheelchair.
  • the pivot means is further preferably formed for selective securement and latching of the desk top in various sloped positions and the desk top may advantageous be provided as two members integrally mounted to each othe for pivotal movement about a horizontal axis extending across the chair.
  • the desk top can also include a lip to restrict objects against falling off the top, a light mounted to the inside of the lip, and armrest padding mounted to the outside of the lip. When the desk assembly is in the stored position, the padding extends along a sid of the wheelchair, as would the padding on a conventional armrest.
  • the mounting means for attaching the assembly to the wheelchair further is preferably adjustable to accommodate different wheelchar dimensions and is formed f movement of the desk top toward or away from the user.
  • FIGURE 1 is a side elevational view of a wheelchair showing a desk assembly constructed in accordan with the present invention mounted thereto and deployed across the wheelchair.
  • FIGURE 2 is an enlarged side elevational view corresponding to FIGURE 1 with the desk top shown in a vertical, moved position.
  • FIGURE 3 is a top plan view of the desk assembly of FIGURE 1 with the desk top in a deployed position.
  • FIGURE 4 is a top plan view of a desk assembly o FIGURE 1 with the desk top in a stored position.
  • FIGURE 5 is an enlarged, fragmentary, partially broken away, cross-sectional view of the desk assembly taken substantially along the plane of line 5-5 in FIGURE 3.
  • FIGURE 6 is an enlarged, cross-sectional view taken substantially along the plane of line 6-6 in FIGURE 4.
  • FIGURE 7 is an enlarged,, fragmentary, side elevational view of the area bounded by the circle 7-7 in FIGURE 1.
  • FIGURE 8 is an enlarged, fragmentary, side elevational view, partially in cross-section, taken substantially along the plane of line 8-8 in FIGURE 3.
  • the desk assembly of the present invention is adapted for mounting to a wheelchair, invalid chair or the like.
  • desk assembly 21 is mounted to a wheelchair, generally designated 22, which has a pair of drive wheels 23 and 24 with hand rings 26 and 27 that can be employed by the person using the chair to propel the same.
  • the wheelchair further includes a seat structure 28, back 29 and an armrest structure 31 mounted proximate a first side 32 of seat 28.
  • Such wheelchairs are further conventionally provided with manually engageable handle or grip elements 30, which can be used by an attendant to propel the chair, and foot rests 35.
  • Desk assembly 21 of the present invention is particularly well suited for mounting to a wheelchair in that it is designed in a manner which will not interfere or conflict with large drive wheels 23 and 24 conventionally found on powered or unpowered wheelchairs. It will be understood, however, that many of the advantages of compactness, usefulness and versatility of the desk assembly of the present invention will accrue when the desk assembly is mounted to an invalid chair, or even a chair without wheels. Thus, it is contemplated that the desk assembly of the present invention may be employed with chairs other than wheelchairs.
  • the present desk assembly includes desk top or surface means, generally designated 33, mounting means, generally designated 36, for mounting the assembly to wheelchair 22, and pivot means, generally designated 34, pivotally couplin desk top means 33 to the remainder of desk assembly 21.
  • desk assembly pivot means 34 is formed for movement of desk top means 33 to and ' from a deployed position (shown in solid lines in FIGURES 1, 3 and 5) in which the desk top extends across and above seat 28, and a stored position (shown in solid lines in FIGURES 4 and 6) in which the desk top is positioned proximate a side of the wheelchair.
  • a stored position usually was achieved simply by hanging the desk top along a side of the chair.
  • this approach is suitable for invalid chairs and chairs without wheels or other structures along the side thereof, but is generally unsuitable and undesirable for use with wheelchairs.
  • the desk assembly mounting means 36 is formed to mount the desk assembly to wheelchair 22 proximate a second side 37 of seat 28.
  • desk assembly pivot means 34 is further formed for movement of desk top means 33 to a stored position located at a location at which an armrest structure for the wheelchair would conventionally be positioned.
  • wheelchair 22 be provided with a conventional armrest structure 31 extending along first side 32 of seat 28.
  • the opposite or second side 37 of seat 28 is preferably not formed with an armrest structure.
  • the desk assembly of the present invention is mounted where the armrest structure for the wheelchair would normally be positioned.
  • desk top- means 33 be formed for selective collapsing of the same to relatively compact size and configuration substantially the same as the size and configuration of armrest structure 31. This will enable movement of the collapsed desk top to the stored position of FIGURES 4 and 6.
  • Collapsing of desk top means 33 is preferably provided by forming the desk top from two members 38 and 39 which are hingedly secured or coupled to each other by hinge means 41 (FIGURES 1 and 6) so that the desk top member 39 can be pivotally moved or folded away from the person seated in the wheelchair about a horizontal axis extending across the seat to the collapsed condition.
  • the collapsed condition results in the two desk top members being folded together in a side-by-side relationship that substantially reduces the bulk of the desk top.
  • the hinging of desk top members 38 and 39 has further advantages in addition to making the top collapsible to a more compact condition. It is an important feature of the desk assembly of the present invention to form the desk assembly pivot means 34, for selective securement of both the desk top in the deployed position with a portion, in this case member 38, of the desk top relatively elevated with respect to the remainder, in this case member 39, of the desk top. Such elevation of the desk top 33 is shown in phantom in FIGURE 1. As will be described in more detail hereinafter, member 39 is secured by vertical adjustment pivot means 34 to an upwardly sloped condition, with the slope facing in the direction of the position at which a user would sit in wheelchair 22.
  • pivot means 34 include a first pivotal element 42, which is preferably a hinge having a leg 43 fastened, for example by fasteners 4, to the underside of the front right-hand corner of desk top member 38.
  • the opposite leg 46 of hinge 42 depends downwardly and is pivotally mounted by a second pivotal element 47, which is preferably a pin.
  • Spacer element 48 spaces leg 46 on pin 47 f om the sides of vertically oriented tubular member 49.
  • the desk top is mounted for pivotal motion by first pivotal element or hinge 42 about an axis that is horizontal and parallel to the sides of seat 28, and additionally, the pivotal mounting of hing leg 46 by pin 47 enables rotation of the desk top about a horizontal axis, which extends across the seat and is substantially perpendicular to the axis of hinge 42.
  • the provision of mutually perpendicular pivoting at pivot means 34 enables the desk top to be moved from th deployed to the stored position in the following sequence. First, member 39 is folded or collapsed onto member 38 to make the desk top more compact for storage. Secondly, the desk top is pivoted about the axis of hinge 42 from the horizontal position shown in solid lines in FIGURE 1 to a near vertical position shown in solid lines in FIGURE 2.
  • the collapsed desk top is pivoted about axis o pin 47, as is shown in phantom lines in FIGURE 2, until members 38 and 39 have been swung down to the stored position of FIGURES 4 and 6.
  • the pivoting about hinge 42 is appoximately 90°, as is the pivoting about pin 47.
  • tubular member 49 In order to accommodate pivotal movement of hing leg 46 with respect to tubular member 49, the wall of tubular member 49 is formed with notch or slot 51. Slot 51 allows leg 43 to extend outwardly of tubular member 49 whe the desk top is in the stored position.
  • hinge means 34 for rotation about a vertical axis.
  • a rotatable mount can be provided by telescoping tubular member 49 inside a guide tube 56.
  • Guide tube 56 preferably extends substantially over the length of tubular member 49 and is formed with a slot or notch 55 in the upper end thereof which may be aligned with notch 51 in tube 49 to accommodate hinge leg 43 when in the stored position.
  • the location of pin 47 should be at a height below the top of member 49 so that when the hinge is rotate'd about pin 47, the side 50 of the desk top will swing outwardly of the outside diameter of guide tube 56.
  • the side 50 in the stored position (shown in phantom) is parallel but spaced outwardly of guide tube 56.
  • the notch 55 accommodates pivotal movement of the leg 46 of the hinge, which can be seen from FIGURES 1 and 2 to extend outwardly of tube 49 and guide tube 56.
  • tubular member 49 of pivot means 34 be a vertically movable member. This can be accomplished by slidably telescoping member 49 into tubular guide member 56.
  • Guide tube 56 is secured by welding or the like to the front end of a desk assembly housing or frame member 57 extending along the side 37 of the wheelchair.
  • latch means generally designated 58, be provided.
  • the latch means can take the form of a plurality of openings 59 formed in the side wall of vertically movable member 49, an opening 60 in guide tube 56, and a latch pin 61 movably opened through openings 59 and 60 and inwardly biased by biasing means 62 mounted to outside of tube 56.
  • the latch can have an end 63 formed for manual engagement so as to release the vertically movable member for telescoping reciprocation inside the tube 56.
  • the rearwardmost desk top member 39 be formed with a recess or notch 67 in the edge thereof so as to accommodat or mate with the body of the user's wheelchair.
  • lip 71 will prevent objects from inadvertently rolling forward off the desk top, particularly when the desk is in the horizontal orientation.
  • an armrest support means usually in the form of a first padding portion 7 secured to an outwardly facing side of lip means 71 and a second padding portion 73 secured to an inwardly extending flange 74 on assembly frame or housing 57.
  • first armrest padding 72 and second padding portion 73 will both extend along the side of the seat at about th height of the top o a conventional armrest structure (best seen in FIGURES 4 and 6).
  • second padding portion 73 remains as an armrest rearwardly of desk top 33 and acts as a support for the desk top.
  • the desk assembly of the present invention is also preferably illuminated.
  • lip 71 and armrest padding portion 72 may advantageously have light means 75 mounted thereto and electrically connected to battery means 80.
  • battery 80 is mounted in a cavity in padding 72, although it will be understood that electrical conductor means can extend to batteries (not shown) mounted under seat 28 and used to power the wheelchair.
  • Armrest 31 may be constructed with padding 101 mounted on a tubular frame member 102, which terminates short of the front of the wheelchair.
  • Tubular frame member 102 in turn is supported on a lower or downwardly stepped frame member 103, which does extend substantially along the full length of the first side 32 of the chair.
  • the stepped construction of armrest 31 results in the left front of desk top 33 being unsupported by the armrest. Moreover, even if the armrest 31 extends along the full length of first side 32 of the wheelchair, when the desk top is moved to a sloped position, the left front of the desk top will be elevated from the armrest.
  • desk top support means 104 is carried by one of the desk top and the armrest structure. As shown in the drawing, support means 104 is pivotally mounted at 106 to desk top 33, and is formed as a series of telescoped strips 107, 108 and 109. The lowermost strip 109 is formed with a yoke-like end which will span and rest upon frame member 103. Each of strips 107, 108, and 109 may be provided with latch or detent means enabling selective locking of the strips in a plurality of different positions for support of the desk top at different heights above frame member 103. Additionally, latch means 111 may advantageously be provided for securement of support means 104 in a stored position, shown in phantom in FIGURE 8.
  • Mounting of desk assembly 21 to wheelchair 22 is preferably accomplished by utilizing the existing armrest mounts that are conventionally employed by a large number of wheelchair manufacturers.
  • armrest mounts can take the form of sockets 76 and 77 fastened, for example by welding 78 (FIGURES 5 and 6), to one of the tubular frame members 79 of the wheelchair.
  • Sockets 76 and 77 are forme with an internal bore 81 dimensioned for receipt of a forming part of the armrest structure.
  • the desk assembly of the present invention is mounted to wheelchair 22 in place of one of the armrest structures. Accordingly, the desk assembly ca advantageously make use of the existing armrest mounts 76 and 77.
  • mounting means 36 as a pair of relativel spaced-apart posts 82 and 83 which are mounted to a base member 87 on which desk assembly 21 is supported.
  • Posts 8 and 83 can be mounted for selective movement of the spacin between the posts to accommodate the different spacings between the sockets or mounts 76 and 77 which may be employed by various wheelchair manufacturers.
  • Mounting means 36 is advantageousl formed for selective movement of the position of the desk top either forwardly or backwardly with respect to back 29
  • this adjustment of the desk assembly is preferably accomplished by providing a linkage 121 that is pivotally mounted at 122 t base plate 87 at one end and is pivotally mounted at 123 t the bottom 124 of frame or housing 57.
  • linkage 121 is in the process of movement (as indicated by arrow 126) from a forward position to a rearwardly displaced position, both shown in phantom.
  • the forward and rearward positions vary by a distance equal to twice linkage 121, and two or more linkages can be used to couple the bottom 124 of frame 57 _ to base plate 87. It has been found that two positions will normally provide for sufficient adjustment of the desk top, but it will be understood that frame 57 could also be slidably mounted to base plate 87 with a latching structure permitting locking in a multiplicity of moved positions of the desk top.
  • the desk assembly of the present invention is stored in the position of a conventional armrest, it is a further feature of the present invention that the desk assembly include housing means 57 formed for receipt of the desk top when in the collapsed condition and further formed to shield the desk top from interference from the clothing of the person using the wheelchair.
  • the frame 57 is formed with an arcuate end 96 which captures or encloses the far end 97 of the desk top members from the pivotal mounting assembly 34.
  • the frame 57 is preferably a solid sheet-like member which provides an effective shield so that the person using the chair does not have his or her clothes become caught in any of the operating mechanisms or interfere with movement of the desk top to and from the stored and deployed positions.
  • the guide tube 56 for vertical adjustment member 49 in effect closes the end opposite the U-shaped end 96.
  • the housing can optionally include a solid sheet member which completes the enclosure, but in the embodiment shown in the drawing, a strip or bar 98 is provided a spaced distance from frame sheet 57 so that the stored desk top would nest between sheet 57 and bar 98.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Combinations Of Kitchen Furniture (AREA)

Abstract

Un ensemble formant pupitre (21) est prevu pour etre monte et transporte par une chaise roulante (22) ou autre a l'emplacement d'un accoudoir conventionnel. L'ensemble formant pupitre (21) s'etend en travers des genoux de l'usager de la chaise roulante dans une position deployee, se replie dans une condition relativement compacte, et est mobile par pivotement vers une position de rangement situee la ou un accoudoir conventionnel serait prevu. L'ensemble formant pupitre (21) est en outre forme pour le verrouillage selectif du dessus du pupitre (33) en diverses orientations inclinees et pour le deplacement du dessus (33) du pupitre vers l'ecart de l'usager. Une lampe de lecture (75) est egalement prevue.
PCT/US1980/001397 1979-10-22 1980-10-17 Ensemble formant pupitre pour une chaise roulante ou autre WO1981001096A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8668979A 1979-10-22 1979-10-22
US86689 1979-10-22

Publications (1)

Publication Number Publication Date
WO1981001096A1 true WO1981001096A1 (fr) 1981-04-30

Family

ID=22200233

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1980/001397 WO1981001096A1 (fr) 1979-10-22 1980-10-17 Ensemble formant pupitre pour une chaise roulante ou autre

Country Status (2)

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EP (1) EP0039366A1 (fr)
WO (1) WO1981001096A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0799609A1 (fr) * 1996-04-02 1997-10-08 Chao, Ya-chen Accoudoir pour fauteuil roulant
EP0826356A2 (fr) * 1996-08-29 1998-03-04 Robert K. Osborn Combinaison d'un accoudoir et planche de transfer attachable à un fauteuil roulant
CN109199722A (zh) * 2018-09-29 2019-01-15 浙江爱司米电气有限公司 一种快速拆装组合式助行机器人

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1888525A (en) * 1928-09-19 1932-11-22 Callaway Bookholder
US1898666A (en) * 1931-12-08 1933-02-21 Isaacson Morris Combination book rest and stand
US1976081A (en) * 1933-12-07 1934-10-09 American Seating Co Desk
US2533147A (en) * 1948-10-13 1950-12-05 Angela S Sparks Folding table for attachment to vehicle doors
US2843226A (en) * 1956-04-11 1958-07-15 American Seating Co Adjustable tilt top table
US2845113A (en) * 1956-03-06 1958-07-29 James H Keel Study board attachment for arm chairs
US3197254A (en) * 1963-03-20 1965-07-27 Heywood Wakefield Co Folding tablet arm chair
US3632161A (en) * 1970-07-13 1972-01-04 Universal Oil Prod Co Side arm stowable table
GB1287297A (en) * 1969-10-27 1972-08-31 Godfrey Syrett Ltd Improvements in or relating to trays
US3865434A (en) * 1973-07-20 1975-02-11 Everest & Jennings Rotating wheelchair arm

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1888525A (en) * 1928-09-19 1932-11-22 Callaway Bookholder
US1898666A (en) * 1931-12-08 1933-02-21 Isaacson Morris Combination book rest and stand
US1976081A (en) * 1933-12-07 1934-10-09 American Seating Co Desk
US2533147A (en) * 1948-10-13 1950-12-05 Angela S Sparks Folding table for attachment to vehicle doors
US2845113A (en) * 1956-03-06 1958-07-29 James H Keel Study board attachment for arm chairs
US2843226A (en) * 1956-04-11 1958-07-15 American Seating Co Adjustable tilt top table
US3197254A (en) * 1963-03-20 1965-07-27 Heywood Wakefield Co Folding tablet arm chair
GB1287297A (en) * 1969-10-27 1972-08-31 Godfrey Syrett Ltd Improvements in or relating to trays
US3632161A (en) * 1970-07-13 1972-01-04 Universal Oil Prod Co Side arm stowable table
US3865434A (en) * 1973-07-20 1975-02-11 Everest & Jennings Rotating wheelchair arm

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0799609A1 (fr) * 1996-04-02 1997-10-08 Chao, Ya-chen Accoudoir pour fauteuil roulant
US5799964A (en) * 1996-04-02 1998-09-01 Chao; Ya-Chen Wheelchair armrest assembly
EP0826356A2 (fr) * 1996-08-29 1998-03-04 Robert K. Osborn Combinaison d'un accoudoir et planche de transfer attachable à un fauteuil roulant
EP0826356A3 (fr) * 1996-08-29 1998-10-28 Robert K. Osborn Combinaison d'un accoudoir et planche de transfer attachable à un fauteuil roulant
US6036216A (en) * 1996-08-29 2000-03-14 Robert Kent Osborn Wheelchair attachable transfer board and armrest combination
CN109199722A (zh) * 2018-09-29 2019-01-15 浙江爱司米电气有限公司 一种快速拆装组合式助行机器人
CN109199722B (zh) * 2018-09-29 2020-02-07 浙江爱司米电气有限公司 一种快速拆装组合式助行机器人

Also Published As

Publication number Publication date
EP0039366A1 (fr) 1981-11-11

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