EP1046385A2 - Einstellvorrichtung für einen Stuhl - Google Patents

Einstellvorrichtung für einen Stuhl Download PDF

Info

Publication number
EP1046385A2
EP1046385A2 EP20000101070 EP00101070A EP1046385A2 EP 1046385 A2 EP1046385 A2 EP 1046385A2 EP 20000101070 EP20000101070 EP 20000101070 EP 00101070 A EP00101070 A EP 00101070A EP 1046385 A2 EP1046385 A2 EP 1046385A2
Authority
EP
European Patent Office
Prior art keywords
chair
chair back
adjustment device
coupling
bearing frame
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.)
Granted
Application number
EP20000101070
Other languages
English (en)
French (fr)
Other versions
EP1046385A3 (de
EP1046385B1 (de
Inventor
Berto Vassilli
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.)
Vassilli SRL
Original Assignee
Vassilli SRL
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 Vassilli SRL filed Critical Vassilli SRL
Publication of EP1046385A2 publication Critical patent/EP1046385A2/de
Publication of EP1046385A3 publication Critical patent/EP1046385A3/de
Application granted granted Critical
Publication of EP1046385B1 publication Critical patent/EP1046385B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1067—Arrangements for adjusting the seat adjusting the backrest relative to the seat portion
    • 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
    • A61G5/1054—Large wheels, e.g. higher than the seat portion
    • 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/74—General characteristics of devices with special adaptations, e.g. for safety or comfort for anti-shear when adjusting furniture
    • 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
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards

Definitions

  • the chairs serving in general as aids for disabled or traumatised people are the subject matter of continuous studies in order to offer an ever increasing comfort.
  • the chairs may be made as stationary chairs or wheelchairs.
  • the size of the available portion of the chair seat must take into account the length of the thigh-bone of the person sitting thereon so that, when the back of the person leans against the chair back, the lower portion of the leg can bend in the proper position without the knees being pushed forward without need.
  • the chair back must be made with a sufficient extension to allow a correct support to the back of the person sitting on the chair seat, and this is to be achieved whatever the inclination one wishes to give to the chair back itself.
  • the main problem is due to the fact that the persons who are to sit on the chair may have different body structures, more particularly specific lengths of the thigh-bones and specific sizes of the hip-bones and the ischial bones.
  • the aim of the present invention is to provide a chair that is not personalised and that can be adapted to the individual cases by simple interventions, without need of modifying the structure, in such a manner therefore that the chair fits to a wide range of people, ranging from people that are in the average short to people that are in the average tall.
  • the comfort is to be maintained in respect of both the available seat extension and the chair back position, as well as in respect of the displacements of the chair back itself when passing from the upright position to an inclined position, until reaching a substantially horizontal position.
  • the chair according to the invention is so manufactured as to take into account that each person has a given length of the thigh-bone, depending on his/her body size, and to take into account that, when that person is sitting on the chair, the thigh-bone head, housed within the cotyloid cavity of the hip-bone, is at a well defined distance from the chair back and at a well defined level above the seat plane.
  • the level of the thigh-bone head is determined by the ischial structure of said person sitting on the chair.
  • the requirements of the proper seat availability and of the proper positioning of the chair back, pivoted in correspondence of the virtual axis passing through the above mentioned seats of rotation of the thigh-bone heads, are met by providing on the sides of the bearing frame of said chair a set of holes for pivotally coupling the chair back, said set having an inclined arrangement such that the greater the distance of a hole from the front edge of the seat, the higher the level above the plane of said seat.
  • Each hole selected for the pivotal coupling of the chair back corresponds with a different position of the virtual axis passing through the rotation seats of the thigh-bone heads of the persons which will sit on the chair.
  • the chair back of which the supporting surface must be spaced apart from the cotyloid cavities of the hip-bone within which the thigh-bone heads of the person sitting on the chair rotate, is equipped in its lower portion with two suitable spacing arms the ends of which are associated with pivot pins for the mounting in said holes.
  • a slot can be provided allowing the chair back pivot points to be varied continuously rather than stepwise.
  • the different orientations of the small plates make the respective upper hole for the pivotal coupling of the chair back move along a path consisting of an arc of circumference located in the raising quadrant, whereby the plate corresponds with the inclined succession of holes (or the slot) mentioned above.
  • the adjustment device described above may be applied to wheel-chairs or to chairs not provided with wheels.
  • a chair in the example shown a wheel-chair intended for use by disabled or traumatised people has a bearing frame 1 with side elements 2, a reclining chair back 5 supported on its rear side by an adjustable device 19, and a seat 6.
  • Reference 14 denotes the upper parts of side elements 2.
  • Wheels 7, 8 and bearing structures 9 for footrests are associated to bearing frame 1.
  • a dummy, of which the trunk is denoted by reference 10 and the thigh-bone portion by reference 11, schematises a person sitting on the chair.
  • Reference 12 is the position about which the thigh-bone head rotates, namely a position within the cotyloid cavity of the hip-bone, and reference 13 is the position of the articulation of the lower end of the thigh-bone, in correspondence with the knee.
  • spacing arms 4 are provided for the pivotal connection of chair back 5 to side elements 2 of bearing frame 1. More particularly, the free end of each spacing arm 4 is pivoted, through a suitable pivot pin (not shown), in a hole 3 selected within a set of holes 3 provided in each side element 2.
  • the set of holes 3 are substantially arranged along an inclined line so that the greater the distance of a hole from the front edge of seat 6, the higher the level above the plane of said seat.
  • the spacing arm 4 of chair back 5 is pivoted in that hole which is substantially located in correspondence with the virtual axis passing through the cotyloid cavity in the hip-bone where the thigh-bone head of the person (shown by dummy 10) sitting on the chair rotates, i.e. in correspondence with the virtual axis passing through points 12.
  • Each hole selected for the pivotal mounting of the chair back corresponds with a different position of said virtual axis (i.e. a different distance from the front edge of the seat 6 and a different level above the plane of said seat), so that the chair can be adapted to the specific body structure of the user.
  • the invention is not linked to a particular embodiment of bearing frame 1 or to a particular arrangement of wheels 7, 8, as can be appreciated in Figs. 5 to 13.
  • a slot can be provided on each side element 2 instead of the set of holes 3, thereby allowing the chair back pivot points to be varied continuously rather than stepwise.
  • each plate 15 has in its upper portion a hole 16 which forms the pivot point for the end of the corresponding spacing arm 4 of chair back 5. In its lower portion, each plate 15 is pivotally mounted in 17 on the bearing frame 1. Further holes 18 in plate 15 allows varying the mounting position of the plate on the bearing frame so as to vary the plate orientation. The arrangement is such that, when plates 15 rotate onto bearing frame 1, holes 16 move along respective arcs of circumference.
  • Holes 17, 18 may be replaced by a properly shaped slot or by a combination of holes with a properly shaped slot.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Electrotherapy Devices (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Special Chairs (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • External Artificial Organs (AREA)
EP00101070A 1999-04-23 2000-01-20 Stuhl mit einer Einstellvorrichtung Expired - Lifetime EP1046385B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999PD000084A IT1306651B1 (it) 1999-04-23 1999-04-23 Dispositivo di registrazione per sedute.
ITPD990084 1999-04-23

Publications (3)

Publication Number Publication Date
EP1046385A2 true EP1046385A2 (de) 2000-10-25
EP1046385A3 EP1046385A3 (de) 2001-09-19
EP1046385B1 EP1046385B1 (de) 2007-02-14

Family

ID=11392573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101070A Expired - Lifetime EP1046385B1 (de) 1999-04-23 2000-01-20 Stuhl mit einer Einstellvorrichtung

Country Status (5)

Country Link
EP (1) EP1046385B1 (de)
AT (1) ATE353617T1 (de)
DE (1) DE60033334T2 (de)
ES (1) ES2280154T3 (de)
IT (1) IT1306651B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1820725A3 (de) * 2006-02-16 2008-04-16 Shimano Inc. Fahrradschaltung
US8201476B2 (en) 2008-12-09 2012-06-19 Shimano Inc. Bicycle operating device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8061667B2 (en) 2010-04-16 2011-11-22 Sram, Llc Mounting device for bicycle control components

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615856B1 (en) * 1983-08-19 1993-12-29 Pin Dot Products Method for forming an individually contoured corrective seat for a wheelchair
US5297021A (en) * 1992-11-16 1994-03-22 Koerlin James M Zero shear recliner/tilt wheelchair seat
DE4301811B4 (de) * 1993-01-23 2006-11-23 C. Rob. Hammerstein Gmbh Rückenlehnengelenk für einen Fahrzeugsitz mit einem Sitzträger und einer an diesem angelenkten Rückenlehne
CA2170959A1 (en) * 1996-03-04 1997-09-05 Michael S. Wexler Invalid chair with pivotal foot rest
US5957474A (en) * 1997-02-24 1999-09-28 Pdg Inc. Wheelchair for large individuals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1820725A3 (de) * 2006-02-16 2008-04-16 Shimano Inc. Fahrradschaltung
US8042427B2 (en) 2006-02-16 2011-10-25 Shimano Inc. Bicycle shifter
US8201476B2 (en) 2008-12-09 2012-06-19 Shimano Inc. Bicycle operating device
US8413543B2 (en) 2008-12-09 2013-04-09 Shimano Inc. Bicycle operating unit connector
US8695454B2 (en) 2008-12-09 2014-04-15 Shimano Inc. Bicycle operating device

Also Published As

Publication number Publication date
ES2280154T3 (es) 2007-09-16
EP1046385A3 (de) 2001-09-19
ITPD990084A0 (it) 1999-04-23
EP1046385B1 (de) 2007-02-14
DE60033334D1 (de) 2007-03-29
DE60033334T2 (de) 2007-10-31
ITPD990084A1 (it) 2000-10-23
HK1031993A1 (en) 2001-07-06
IT1306651B1 (it) 2001-10-02
ATE353617T1 (de) 2007-03-15

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