EP1354538B1 - Backrest for a chair, in particluar for a wheelchair - Google Patents

Backrest for a chair, in particluar for a wheelchair Download PDF

Info

Publication number
EP1354538B1
EP1354538B1 EP02252777A EP02252777A EP1354538B1 EP 1354538 B1 EP1354538 B1 EP 1354538B1 EP 02252777 A EP02252777 A EP 02252777A EP 02252777 A EP02252777 A EP 02252777A EP 1354538 B1 EP1354538 B1 EP 1354538B1
Authority
EP
European Patent Office
Prior art keywords
backrest
back support
screw
backing plate
wing pad
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.)
Expired - Lifetime
Application number
EP02252777A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1354538A1 (en
Inventor
Rodney William Palmer
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.)
Performance Health Products Ltd
Original Assignee
Performance Health Products 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
Priority to DE60211477T priority Critical patent/DE60211477T2/de
Application filed by Performance Health Products Ltd filed Critical Performance Health Products Ltd
Priority to AT02252777T priority patent/ATE326154T1/de
Priority to DK02252777T priority patent/DK1354538T3/da
Priority to PT02252777T priority patent/PT1354538E/pt
Priority to ES02252777T priority patent/ES2263744T3/es
Priority to EP02252777A priority patent/EP1354538B1/en
Priority to EP03727323A priority patent/EP1496770A1/en
Priority to PCT/EP2003/004064 priority patent/WO2003088783A1/en
Priority to AU2003233989A priority patent/AU2003233989A1/en
Publication of EP1354538A1 publication Critical patent/EP1354538A1/en
Priority to HK04102828A priority patent/HK1061958A1/xx
Application granted granted Critical
Publication of EP1354538B1 publication Critical patent/EP1354538B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • 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
    • A61G5/122—Rests specially adapted therefor, e.g. for the head or the feet for the back

Definitions

  • This invention relates to a backrest for a chair, in particular for a wheelchair.
  • a wheelchair generally has a seat and a backrest that are supported by a pair of side frames.
  • Backrest posts extend upwardly from the rear end of the side frames and turn rearwardly away from the backrest to form handles.
  • Some wheelchairs have collapsible struts positioned between the side frames to maintain the side frames in a parallel, spaced apart orientation when the chair is occupied by a user. When the struts are collapsed, the side frames move together to allow for easy transportation or storage of the wheelchair.
  • the seat and the backrest of such collapsible wheelchairs are constructed from flexible material that easily folds when the wheelchair is collapsed.
  • the flexible material of the seat and backrest does not provide optimum support or comfort for the occupant. For this reason contoured backrests have been developed to provide improved support for individuals requiring special support, such as those having spinal deformities or muscular atrophy.
  • V-TRAK V-TRAK
  • This backrest is available in different forms, namely as sports backrest, standard backrest, high backrest and segmented backrest. All these backrests have on the rear side in the middle a rail which permits hight-adjustable connection to a support. From this support extend two lateral arms having at their end a quick connecting and release device for connecting the backrest assembly to the wheelchair. For this purpose the side frames of the wheelchair are provided with adapters for cooperation with these connecting and release devices.
  • the backrest or each segment of the backrest comprises a back support consisting of a shell of plastic material having a cylindrical curvature.
  • Straps or belts extend from one side of the back support to the other side and to the rear of the back support. These straps can be tensioned from the rear side of the backrest and locked in the desired position. Tensioning the straps elastically deforms the back support. Located over the straps is a cushion. In addition, a cover encloses the assembly both on the front and the back.
  • a modular backrest system for a wheelchair is described.
  • This backrest system also can be removably attached to the backrest posts of the wheelchair.
  • This backrest can be provided, if desirable, with one or more wing pads.
  • Each wing pad includes a backing plate and a cushion attached to the forwardly presented face of the backing plate.
  • Each wing pad includes a pair of L-shaped support posts. These support posts can be inserted into openings of the back support of the backrest and arrested with screws in the desired position. Therefore, a user suffering, for example from scoliosis, will be laterally supported by one or more wing pads.
  • the described backrest with wing pads has the disadvantage that the wing pads are separate units and require a relatively complicated attachment means.
  • the attachment means permit only a linear adjustment. An angular adjustment is not possible.
  • the backrest with the wing pad and the protruding parts of the L-shaped support posts does not have a nice appearance. This lets the user appear more invalid than he in reality may be. This may have undesirable psychological consequences for the user.
  • the adjusting device is preferably a cable binder attached to the back support and engaged an eye attached to the end of belt.
  • the backrest preferably comprises a back support
  • the wing pad comprises a backing plate, both back support and backing plate consisting of one piece of material having a deformable section providing a hinge portion in between.
  • the back support together with the backing plate of the wing pad are preferably formed of plastic, preferably thermoplastic, sheet material having some elasticity.
  • the hinge may be formed by folds in the sheet material. The use of such sheet material provides for low manufacturing cost.
  • the adjusting means preferably comprise a screw tensioning device.
  • the screw tensioning device may comprise a screw with a screw thread and a bracket with a tapped hole receiving the screw thread, said screw being mounted in a substantially horizontal direction on the back support of the backrest, and said bracket being pivotally mounted on the backing plate of the wing pad.
  • This provides for adjusting means located in small space. In turn, this permits an appealing design of the backrest without protruding parts.
  • the cushion and the cover of the backrest 10 is not shown, but in figure 2 the cushion 11 is represented by a dotted line.
  • the back support 13 and the backing plates 23 of the wing pads 14 are one piece formed of a sheet of preferably thermoplastic sheet material. However, they could also be made by moulding plastic material. They could even be formed of a resilient metal sheet. While it is preferable for the back support 13 and the backing plates 23 to consist of one piece with a hinge portion 15 in between, it would also be possible for the back support 13 and the backing plate 23 to be separate portions hinged together. In the present embodiment the hinged portion is provided by folds 15 in the sheet material.
  • a screw tensioning device 17, as shown in figure 3, serves as adjusting means for adjusting the angle of the wing pad 14 with respect to the back support 13.
  • the screw tensioning device 17 substantially comprises a screw 19 mounted in substantially horizontal direction on the back support 13 and a bracket 21 in form of a U.
  • the bracket 21 is pivotally mounted by a screw 41 on the backing plate 23 of the wing pad 14.
  • the hole 25 for mounting the bracket 21 is seen.
  • the screw 19 has preferably a female hexagon head 26 to permit turning the screw 19 with the socket wrench.
  • the thread 27 of the screw 19 is threaded into a tapped hole 29 of the bracket 21.
  • a screw cap 31 is mounted on the screw 19 to prevent turning the screw 19 out of the tapped hole 29.
  • a cylindrical piece 33 with a hole 35 is provided.
  • the screw head 26 and the piece 33 are received in a channel 37 on the rear side of the back support 13.
  • Part of the screw 19 extends in a channel 39 of the back support 13.
  • the bracket 21 is received in a channel 43 of the wing pad 14.
  • a cover plate 24 covers the region of the bracket 21 and the screw 19 in the hinge portion 15 to prevent them contacting the cushion 11.
  • the backrest as shown in the drawing may be provided with one or more belts or straps 51 for supporting the back of the user.
  • the embodiment of the backrest as shown in figure 1 is provided with four belts, but only one belt 51 is shown.
  • the belt 51 is attached with the hook 53 at one lateral portion of the back support 13 and extends on the front side of the back support 13 to a hook 53 the opposite lateral portion.
  • There the belt is turned around in direction to an adjusting device 55.
  • the belt 51 is either elastically stretchable or comprises at least one elastically stretchable section 57. As shown in figure 2, the elastically stretchable section 57 is connected to a loop 58 of the belt.
  • the adjusting device 55 is preferably a cable binder engaged to an eye 59 attached to the end of the belt 51.

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)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP02252777A 2002-04-19 2002-04-19 Backrest for a chair, in particluar for a wheelchair Expired - Lifetime EP1354538B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AT02252777T ATE326154T1 (de) 2002-04-19 2002-04-19 Rückenlehne für einen stuhl insbesondere für einen rollstuhl
DK02252777T DK1354538T3 (da) 2002-04-19 2002-04-19 Ryglæn til en stol, især til en körestol
PT02252777T PT1354538E (pt) 2002-04-19 2002-04-19 Encosto para as costas, em particular para uma cadeira de rodas
ES02252777T ES2263744T3 (es) 2002-04-19 2002-04-19 Respaldo para una silla, en particular una silla de ruedas.
EP02252777A EP1354538B1 (en) 2002-04-19 2002-04-19 Backrest for a chair, in particluar for a wheelchair
DE60211477T DE60211477T2 (de) 2002-04-19 2002-04-19 Rückenlehne für einen Stuhl insbesondere für einen Rollstuhl
EP03727323A EP1496770A1 (en) 2002-04-19 2003-04-17 Backrest or backrest section for a chair, in particular for a wheelchair
PCT/EP2003/004064 WO2003088783A1 (en) 2002-04-19 2003-04-17 Backrest or backrest section for a chair, in particular for a wheelchair
AU2003233989A AU2003233989A1 (en) 2002-04-19 2003-04-17 Backrest or backrest section for a chair, in particular for a wheelchair
HK04102828A HK1061958A1 (en) 2002-04-19 2004-04-22 Backrest for a chair, in particular for a wheelchair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02252777A EP1354538B1 (en) 2002-04-19 2002-04-19 Backrest for a chair, in particluar for a wheelchair

Publications (2)

Publication Number Publication Date
EP1354538A1 EP1354538A1 (en) 2003-10-22
EP1354538B1 true EP1354538B1 (en) 2006-05-17

Family

ID=28459589

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02252777A Expired - Lifetime EP1354538B1 (en) 2002-04-19 2002-04-19 Backrest for a chair, in particluar for a wheelchair
EP03727323A Withdrawn EP1496770A1 (en) 2002-04-19 2003-04-17 Backrest or backrest section for a chair, in particular for a wheelchair

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03727323A Withdrawn EP1496770A1 (en) 2002-04-19 2003-04-17 Backrest or backrest section for a chair, in particular for a wheelchair

Country Status (9)

Country Link
EP (2) EP1354538B1 (xx)
AT (1) ATE326154T1 (xx)
AU (1) AU2003233989A1 (xx)
DE (1) DE60211477T2 (xx)
DK (1) DK1354538T3 (xx)
ES (1) ES2263744T3 (xx)
HK (1) HK1061958A1 (xx)
PT (1) PT1354538E (xx)
WO (1) WO2003088783A1 (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8517469B1 (en) 2012-09-06 2013-08-27 Aspen Seating, Llc Three-axis adjustable back support assembly and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008534364A (ja) * 2005-04-08 2008-08-28 シュクラ ゲレーテバォ アクチェンゲゼルシャフト シートの外側部を調整するための装置及び方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2276798A1 (fr) * 1974-07-03 1976-01-30 Peugeot & Renault Dispositif de reglage des parties laterales d'un element de siege
US4500136A (en) * 1980-07-30 1985-02-19 Lear Siegler, Inc. Vehicle seat including improved adjustable side bolsters
IT1219016B (it) * 1988-02-12 1990-04-24 Tis Tecnologia Innovazione Sti Elemento di molleggio e contenimento laterale per una seduta e o uno schienale di un sedile e sedile in corporante tale elemento
CA2131736A1 (en) * 1994-09-09 1996-03-10 David Quennell Back support
AUPO213496A0 (en) * 1996-09-05 1996-09-26 Henderson's Industries Pty Ltd Adjustable lumbar support
US6095611A (en) 1997-10-07 2000-08-01 Roho, Inc. Modular backrest system for a wheelchair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8517469B1 (en) 2012-09-06 2013-08-27 Aspen Seating, Llc Three-axis adjustable back support assembly and method

Also Published As

Publication number Publication date
PT1354538E (pt) 2006-09-29
EP1354538A1 (en) 2003-10-22
AU2003233989A1 (en) 2003-11-03
DK1354538T3 (da) 2006-09-18
DE60211477T2 (de) 2007-05-24
DE60211477D1 (de) 2006-06-22
HK1061958A1 (en) 2004-10-15
WO2003088783A1 (en) 2003-10-30
EP1496770A1 (en) 2005-01-19
ATE326154T1 (de) 2006-06-15
ES2263744T3 (es) 2006-12-16

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