The active headrest (Active Head Restraint) is a purely mechanical system, the top of the pad support, is connected by a rod to a pressure plate within the seat back, the vehicle was when the rear seat rear-ended, the occupant the body due to an impact force, will be crashed into the back, the pressure plate pushed back, prompting the headrest upward push forward, so that before the violent shaking of head and neck, hold the head and neck of passengers, prevent or reduce the possibility of injury. Another advantage of the active headrest is completed after the actuation, it will automatically return to the 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.
1. The active headrest noun
The active headrest (Active Head Restraint) is a purely mechanical system, the top of the pad support, is connected by a link to a pressure plate in a seat back, the vehicle was when the rear seat rear-ended, the occupant’s body by the impact force, will hitThe backrest, the pressure plate pushed back, prompting the headrest upward push forward, so that before the violent shaking of head and neck, hold the head and neck of passengers, prevent or reduce the possibility of injury. Another advantage of the active headrest is completed after the actuation, it will automatically return to the 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.
2. Purpose and principles of the active headrest
When the vehicle was to strike the rear, the part of the damage is the most common cervical, 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 the rear rear-ended, the head relative to the body caused by violent shaking.
The active headrest (non-inflatable) works:
The non-pneumatic crash-active head restraints, using mechanical means being activated when the entire head pillow move up by the metal supporting column, thereby protecting the human neck.
There are two mechanisms:
1 activation principle headrest
crash-active headrest apparatus in which, when it is subjected to activation, this means the entire headrest support post shift upward by the metal, so that the protection of human head and neck.
2. Seatback activation
collideActive protection mechanism disposed inside the seat, when activated by, in the seat headrest mechanism will move up, thus protecting the human neck.