TRW to equip seat belt systems with DLT technology
TRW Automotive Holdings (TRW) will equip seat belt systems with its new Dynamic Locking Tongue (DLT) technology, a lightweight and compact design consisting of a seat belt tongue with a rotating cam and a concealed spring.
The DLT allows webbing to pass freely through the tongue when buckling and in normal seat belt use to ensure comfort and convenience for everyday use.
However, in the event of hard braking or a crash resulting in greater than about 45 Newtons (10lb) of force on the belt, the DLT clamps the webbing and works with other seat belt technologies helping to reduce loads on the occupant's chest, said the company.
TRW Occupant Safety Systems vice president of engineering Norbert Kagerer said that DLT is a simple and effective way to help manage the energy of an occupant in a crash.
It works in concert with other seat belt technologies such as pretensioners and load limiters, and its ability to reduce chest compression loads is of benefit in complying with the more stringent test criteria now in place for the Euro NCAP and USNCAP ratings systems, Kagerer said.
The company said that DLT has been launched into production in North America, and vehicle manufacturer interest is high in this technology globally.
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