Innretning for regulering av höyden av nakkestötten på rygglenet av et sete samt nakkestötten som en del av en slik innretning

摘要

The head rest (72) on the back (34) of a seat has a head rest support (12) which slides relative to the back between bottom and top positions. The head rest also slides relative to the support between bottom and top positions. Elastic indexing (24) stabilises certain positions of the support relative to the back and the head rest relative to the support. The indexing is such that the support is only stabilised relative to the back between its bottom and top positions. The bottom position of the head rest, relative to the support, is stabilised in a more resistant way, relative to sliding upwards, than the bottom position of the support relative to the back. The top position of the support, relative to the back, is stabilised in a more resistant way , relative to sliding downwards , than each stabilised position, other than the bottom position, of the head rest relative to the support.