front knee airbag (the KAB) to protect the safety of passengers upon collision of the knee, the knee spacer panel directly impact cushion knee displacement due to an impact of inertia, reducing the secondary collision of the occupant in the car ornaments of damage to the passenger’s knee.
1. The knee airbag Glossary
The knee airbag (the KAB) can secure the passenger’s knee during a collision, the knees of isolated direct impingement panel, due to the impact cushion knee the displacement of inertia, reducing passenger car interior damage to the passenger’s knee in the secondary collision. The KAB protected object can be divided into three categories: Driver KAB: driver knee airbag; PASS KAB: occupant knee airbag; REAR KAB: rear occupant knee airbag.
2. The principle of a knee airbag
When the sensor detects a vehicle collision, the gas generator ignition explosive reaction will occur, resulting in the release of nitrogen or compressed nitrogen filled bag, and the passenger air bag contact, through the cushion to absorb the impact energy, thereby protecting the passenger.
airbag as a passive safety devices, protective effect has been widely recognized that people first patent related to airbag began in 1958. In 1970 alone the manufacturers started to develop can reduce collisions in the degree of injury of a passenger airbag; in the 1980s, automobile manufacturers began fitted with airbags; into the 1990s, put the amount of airbags rose sharply; while entering the new century later, in general it is equipped with airbags on cars. Since airbags available, it has saved many lives. Studies have shown that frontal air bag device car crash, the driver of mortality, big cars reduced by 30 percentage midsize sedan by 11 percentage small cars reduced by 20 percentage.