Overview
The seatbelt with pretensioner and force limiter activate when a strong impact is
detected during a frontal collision. Pretensioners enhance the effect of occupant
restraint performance while force limiters mitigate the impact applied to the chest,
thus contributing to achieving excellent occupant restraint performance.
Content of Safety Functions
Situation (Activation trigger)
When strong impact is detected from the frontal direction
Function (System/Components)
Pretensioner: Impact detection sensors + ELR (Emergency Locking Retractor) locking
device + Pretensioner device + Belt retracting device
Force limiter: Force limiter device + ELR locking device
Operation (Operation mechanism)
Pretensioner: Instantaneously rewinds the seatbelt
Force limiter: Avoids the overload force applied to the seatbelt when the occupant
is restrained
Result (Mechanical phenomenon after activation)
Pretensioner: Quickly restrains occupants
Force limiter: Suppresses the force applied to the seatbelt to under a certain level
Benefits
The seatbelt with pretensioner and force limiter helps mitigate the impact to the
chest while enhancing the effect of occupant restraint performance during a frontal
collision.
Play Active Safety Video Below