With our in-depth understanding of safety knowledge and improved quality of life, the safety and comfort of cars have become two aspects of our concern. In safety configurations, the number of es, the number of airbags, and active braking are better understood, but few people pay attention to the headrests. The headrest is seen as a comfortable configuration. Whether driving or fatigue driving, it is comfortable to lean on the headrest.
Headrest
In short, the headrest plays a very good protective role for our cervical spine. If the car is violently hit, due to inertia, if the car moves forward, the person will move backwards, the body is supported by the seat back, and no displacement will occur. If the head is not supported, the head will move quickly backwards, resulting in neck injuries. If the rear-end is serious, it can even be life-threatening.
protection
After the headrest is installed, the head is supported by the headrest, which greatly reduces displacement and effectively protects the cervical spine. In fact, during driving, our heads and headrests are kept at a certain distance. The farther away we are, the greater the range of motion of our heads. Shaking your head does not hinder left and right observation. If the headrest is too forward, it can hinder the movement of our head and make us feel uncomfortable. However, if the head is far away from the headrest, the protection of the headrest to the head will be very weak after a rear-end collision. It may be that the head did not touch the headrest and the cervical spine was injured. Therefore, in the event of an accident, the closer the distance between the head and the headrest, the better its protective effect. According to this requirement, the role of the active headrest will play a role.
Typically, the active headrest, like a normal headrest, is also located at the rear, leaving room for movement of the head. However, in the event of an accident, the active headrest will immediately move forward to shorten the distance between the head and the headrest, thus protecting the neck to the maximum. There are two ways to trigger the headrest. One is mechanical. Using the principle of levers, when a rear-end collision occurs, the body will move backwards, squeeze the seat, and push the pressure plate through the force of the back. The pressure plate is connected to the headrest and moved forward. The other is the sensor type, which is triggered in the same way as the airbag. There is a sensor in the rear of the car that triggers the movement of the headrest when it feels the impact.
Be safe
In fact, someone actually removed the headrest. One customer is the driver. He couldn't take off his headrest himself. He needed to take the chair apart to remove it. Because the boss said he was sitting in the back and wanted to block his view, he needed to remove it as well. In fact, for safety reasons, either the ordinary headrest active headrest can protect the neck, so it should not be removed.