Active Head Restraints; Active Headrests - Audi A6´05 323 Service

Active headrests

Active headrests are used on the front seats in the
Audi A6'05.
With this system, the headrests move forward in the
event of a rear-impact collision in order to reduce
the distance between the head and the headrest.
Reducing the relative acceleration between
shoulder and head significantly reduces the risk of
whiplash injuries.
A blocking of the mechanics in the event of a frontal
impact, as in the case of the Audi A8'03, is not
necessary, due to the lower mass of the head
restraints.
During a rear-impact collision, the passenger is
pressed against the backrest. This force is
transferred via the backrest padding to the lumbar
support plate in the backrest.
The lumbar support plate is linked to the "Active
headrest" function unit in the backrest head via a
lever mechanism. If the lumbar support plate moves
backwards, the head restraint automatically moves
forwards.
Functional unit
"Active head restraint"
Lever mechanism
Lumbar support plate
Idle position
Functional unit
"Active head restraint"
Lumbar support
plate
Activated
326_012
326_024
326_013
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