1
What is?
Before the vehicle is rear-ended neck suffered violent shaking, hold the head and neck of passengers, prevent or reduce the possibility of injury.
2
What are the advantages?
After the actuation is completed, automatically returns to its original position, the next use, without the need for maintenance, which is designed to provide adequate protection of the head of the cervical spine. Its effect is significant has been well documented in the crash investigation. According to the survey, when equipped with active head restraints can be reduced by 75 percentage cervical spine injuries caused by rear-ended. When the car was rear to strike, part of the damage of the cervical spine is the most frequently occurring, even in low-speed versa; Although the cause and location of injury is hard to determine, but many believe that a key factor in medical research nape of these injuries, because rear rear-ended, the head relative to the body caused by violent shaking.
3
works
The non-pneumatic crash-active head restraints, using mechanical means, when activated by, shifting the entire headrest support column upwardly through the metal, to protect the human neck.
4
Related Development
There are two mechanical activation means:
activating principle headrest
crash-active headrest apparatus in which, when it is subjected to activation, the entire head of the apparatus pillow move up by the metal supporting column, thereby protecting the human neck.
seatback activation
crash-active protection mechanism disposed inside the seat, when activated by, in the seat headrest mechanism will move up, thus protecting the human neck.