FOLDING FRAMEWORK OF CONVERTIBLE ARMCHAIR Russian patent published in 2009 - IPC A47C19/12 

FIELD: personal articles.

SUBSTANCE: invention relates to folding framework of convertible armchair. Framework consists of bearing framework with, mounted on it on one side, lifting framework, which bears bed frame consisting of several hingedly connected frame elements and on which on each side supporting leg is hingedly installed. On supporting leg installed are seat support and back support with folding device. Three frame elements from each side by means of connecting links are connected into three hinged four-linked elements and all together into kinematic chain with possibility of consecutive folding of frame elements at angle approximately 90° to each other form position for lying into position for sitting. In position for sitting supporting leg is installed approximately horizontally, and back support - approximately vertically. Seat support by means of bearing bars is connected with head frame element and by guiding lever with supporting leg in such way, that it, being controlled by eccentric, is placed in position for lying close under head frame element with shifting backward, and in position for sitting - is aligned by head frame element.

EFFECT: obtaining maximal compactness of framework construction, and at placing seat cushion into most comfortable for user position.

8 cl, 3 dwg