The real use of car headrest

In general,Headrest is divided into one fixed and adjustable type.The former is mainly equipped in sport vehicles to ensure the strength and reliability of the seat structure under intense driving conditions; The latter can adjust the height of the headrest according to the height of the driver, the family car is mostly equipped with this headrest. When the driver is involved in a rear-end collision Protects the neck from injury.You know, the neck is one of the densest parts of the body. It's scary to think that once a vehicle hits, the impact force can affect the unprotected neck, ranging from soft tissue bruising to paralysis.So how to adjust the headrest after all just scientific?
First of all, the driver back of the head and the front of the headrest interval, it is best not more than 10 cm. Second, the headrest can not be too high or too low, and the driver's head height to keep consistent. In this way, when a rear-end collision occurs, the head displacement distance is smaller, and the headrest can support the head faster, reducing the injury to the head and neck.