FASTENER ASSEMBLY FOR VEHICLE SEAT Russian patent published in 2014 - IPC B60N2/225 F16H55/08 

FIELD: transport.

SUBSTANCE: invention relates to a fastener assembly for a vehicle seat. The vehicle seat has a bottom and a backrest the tilt of which is adjusted using one fastener assembly (10). The fastener assembly has the first element of the fastener assembly (11) on which a crown gear (17) is performed, the second element of the fastener assembly (12) on which a gear wheel (16) is installed, which engages with the crown gear (17) providing interconnection of both elements of the fastener assembly (11, 12) by means of the gear, and running around an eccentric (27). The eccentric (27) is actuated by a buckle (21) and is installed with a possibility to rotate and serves to initiate the gear wheel (16) rolling around motion relative to the crown gear (17). During rolling around motion at one contact point (K) the side face of the gear wheel (16) tooth adheres to the side face of the crown gear (17) tooth. Eccentricity (e) is determined as a segment between the centre (M₁₇) of the crown gear (17) and the centre (M₁₆) of the gear wheel (16), and the contact point (K) is located - relative to the centre (M₁₆) of the gear wheel (16) - in the first corner (α) over continuation of eccentricity (e). The side faces of the gear wheel (16) and the crown gear (17) teeth adhering to each other at the contact point (K) each time correspond to an equiangular spiral segment shape. The first angle (α) ranges from 10° to 55°.

EFFECT: smooth adjustment of the vehicle seat backrest tilt.

11 cl, 6 dwg