belt Electric vehicle helmet What is the importance of?

The fatal head injury is not the impact on the surface of the electric vehicle helmet, but the second impact between the head and skull. The impact occurred when the electric vehicle helmet hit an obstacle, and the second impact occurred when the brain hit the skull. The head tissue may be crushed or torn, causing permanent damage. Cerebral hemorrhage will increase the pressure on the skull and squeeze the brain tissue. In the frontal impact, the impact force will directly penetrate the bottom of the skull, and the impact force will cut the spine and skull, cutting off the breathing and heartbeat functions.

Because the fatal head injury was not hit on the surface of the electric vehicle helmet, but the second impact was between the head and skull. Therefore, the purpose of the electric helmet is to reduce the speed of the head hitting the skull. The main certification supervision test of electric vehicle helmet test includes placing sensors in the electric vehicle helmet, letting the helmet fall from different heights, angles and test methods and hit sharp metal, and then testing how much force the inner layer of the electric vehicle helmet can withstand when the helmet hits an obstacle and stops moving rapidly.