Lengthwise adjustment for car seat - has spindle and nut threads overcoming self-locking effect with rotary component braked by roller-type freewheel

摘要

The threads of the spindle and nut (15, 16) are such as to overcome the self-locking effect. The rotary component is braked by a freewheel (25) with clamping rollers, and which can be released by a control (43). There may be two freewheels with casings inclined in opposite directions in the respective pockets for the rollers. Each freewheel can have a setting ring with axial release fingers engaging between the rollers, and actuated by a release lever spring-loaded into the locking position. ADVANTAGE - Easy adjustment and safe locking action once set.