Adjusting armature for the back rests of vehicle seats, in particular, motor vehicle seats

摘要

An adjusting armature for a back rest of a vehicle seat, wherein the back rest is incline-adjustable about a first axis and can fold relative to the seat part about a second axis, has a rotary bracket connected to the back rest for pivoting with the back rest. A locking bolt receptacle is stationarily arranged on the seat part and has a planar support surface. A locking bolt is axially moveably arranged on the rotary bracket and spring-loaded in a locking direction for engaging releasably the locking bolt receptacle. A stop bolt is stationarily arranged on the seat part and cooperates with a stop receptacle on the rotary bracket. The locking bolt has a guide section and a locking section having a radially changing support curve. The guide section can rotate causing the radially changing support curve to be supported on the planar support surface for eliminating play.