BACKREST ADJUSTER Russian patent published in 2008 - IPC B60N2/22 

FIELD: mechanics.

SUBSTANCE: invention relates to backrest adjuster as regard to pad of seats to be installed mainly in cars. Backrest adjuster includes tooth gear with internal gearing. Tooth gear consists of two output links. First link consists of gear wheel with internal teeth, cylindrical pivotal lug and axial hole for drive element. The second output link contains gear wheel with outer teeth and cylindrical axial hole to displace the said pivotal lug of the first link and ring. Mechanism is provided with rolling elements. Some of rolling elements contact with outer ring surface and with surface forming axial hole of the second output link. Other rolling elements contact with the inner surfaces of ring and with outer surface of the first link outer surface. The said ring is arranged eccentrically. Rolling elements may be represented as rolls. Longitudinal axes L and N are located along longitudinal axis S of pivotal lug of the first output link or along longitudinal axis Z of mechanism. Drive element may include groove to fix ring. At least, gear wheels may be made of plastic. Ring may be also made of plastic. Groove may be represented as eccentrically machined ring, which is similar to reciprocal end section of mechanism ring.

EFFECT: increase of backrest adjuster efficiency factor owing to reduction of effort to be applied to adjuster handle by user.

6 cl, 4 dwg