Back rest tilting device in reclining chair

A - Human Necessities – 47 – C

Patent

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Details

A47C 3/026 (2006.01) A47C 7/40 (2006.01)

Patent

CA 2581206

A back rest tilting device in a reclining chair formed of less number of parts, simple in structure, easily assembled, and well balanced in layout and energizing force. The energizing means (A) energizing a back rest in an upright direction comprises a rotatingly energizing means (B) with rubber torsion springs (11) using, as a core, a laterally extending pivot shaft (8) rotated integrally with the back rest and having an elastic body (28) filled between an outer tube (27) locked to a support body (6) coaxially with the core and the pivot shaft (8) so that the elastic body (28) can be elastically deformed when the pivot shaft (8) is rotated about the center axis of the outer tube (27) to impart a returning rotating force to the pivot shaft (8).

Dispositif d'inclinaison de dossier pour chaise inclinable, constitué d'un nombre réduit d'éléments, doté d'une structure simple, facile à monter et bien équilibré du point de vue de son tracé et de la force de mise sous tension. Le moyen de mise sous tension (A) mettant sous tension un dossier dans une direction verticale comprend un moyen de mise sous tension de manière rotative (B) muni de ressorts de torsion en caoutchouc (11) utilisant, comme noyau, un axe de pivot (8) s'étendant latéralement mis en rotation d'un seul tenant avec le dossier et comportant un corps élastique (28) remplissant l'espace entre un tube extérieur (27) fixé à un corps de soutien (6) de manière coaxiale par rapport au noyau et à l'axe de pivot (8), de sorte que le corps élastique (28) puisse être déformé élastiquement lorsqu'on fait tourner l'axe de pivot (8) autour de l'axe central du tube extérieur (27) pour conférer une force de retour rotative à l'axe de pivot (8).

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