Adjusting device for vehicle seat has support part on second adjusting arm which only adjoins and supports drive shaft when pinion is heavily stressed under crash forces

摘要

The adjusting device has a drive shaft (32) and pinion (36) associated with a first adjusting arm (20), and a toothed arc (38) on a second adjusting arm (22) which rotates about an axis (24) relative to the first arm. The second arm has a support part (44) set close to the drive shaft. When the pinion is under normal load the support part is radially outside of the drive shaft and when the pinion is heavily stressed e.g. in the event of a crash the support part adjoins and supports the drive shaft.