EP 3831353 B1 20220427 - BACKREST ASSEMBLY AND WHEELCHAIR THEREWITH
Title (en)
BACKREST ASSEMBLY AND WHEELCHAIR THEREWITH
Title (de)
RÜCKENLEHNENANORDNUNG UND ROLLSTUHL DAMIT
Title (fr)
ENSEMBLE DE DOSSIER ET FAUTEUIL ROULANT ASSOCIÉ
Publication
Application
Priority
EP 19213638 A 20191204
Abstract (en)
[origin: EP3831353A1] The invention relates to backrest assembly (1) of a seat of a chair, in particular a wheelchair, comprising: a backrest for supporting the back of a person; two hollow backrest tubes (1.14) connecting the backrest to the seat, in particular seat frame tubes (1.15), on each side of the seat; at least two joints (4.1) for allowing a movement of the backrest tubes (1.14) between at least a first end position and a second end position relative to the seat; two locking means (2.3) for locking and/or unlocking the joints (4.1); and at least one hollow handle tube (1.13) carrying a handle (1.9, 1.10), which is arranged in the middle between the backrest tubes (1.14) and is mechanically connected to the locking means (2.3) via cables (1.3) running substantially inside the hollow tubes (1.14, 1.13). The handle (1.9, 1.10) is providing a twist lock (1.1), with the twist lock (1.1) having only one idle position in which the locking means (2.3) is locked and being adapted to unlock the locking means (2.3) upon rotation of the handle (1.9, 1.10), and is suited to move the backrest tubes (1.14) via the joints (4.1) by pushing or pulling after unlocking, wherein the handle (1.9, 1.10) is adapted to be rotated by a user only in one direction, preferably forwards, towards the front of the chair, for unlocking the locking means (2.3) in any one of the end positions, and the handle (1.9, 1.10) is adapted to automatically re-lock after unlocking the locking means (2.3) and releasing the grip, such that rotating and pushing or pulling of the handle (1.9, 1.10) can be achieved by gripping the handle (1.9, 1.10) by one hand of an user, without releasing the respective grip of the handle (10; 100). The present invention also relates to a wheelchair with such a backrest assembly.
IPC 8 full level
A61G 5/10 (2006.01)
CPC (source: EP)
A61G 5/1067 (2013.01)
Citation (examination)
FR 2845893 B1 20050204 - INVACARE POIRIER SA [FR]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 19213638 A 20191204