If you ride an electric bike without it Electric vehicle helmet ？ Or with a defective electric car helmet, from the following data, you will know that without an electric car helmet, you are playing a prank with death! The question is how many times can you get away with it?
Every year, traffic accidents related to electric vehicles account for 51% of the total number, and the number of deaths caused by electric vehicle traffic accidents accounts for 63% of the total number of deaths caused by traffic accidents. So you know that electric vehicles in traffic accidents belong to high-risk groups, but also relatively vulnerable groups. From the perspective of casualties in electric vehicle accidents, the death rate reached 59.6%. Without electric vehicle helmets, the probability of body injury was 64.8%.
We should all have an impression on this picture. This is the tragedy of electric vehicle helmet sliding on the ground at 70mph, about 112km/h. If you use a defective helmet, it's the same as if you didn't wear it.
Maybe you would say that it is so dangerous to ride an electric bike. Why do you ride an electric bike? If you think so, there is no need to continue reading this article. Everything is one thing and two sides. Electric vehicles are not dangerous. They are the problems of drivers and operators. If you don't correct your mentality and ideas and improve your skills in riding electric vehicles, you should not ride electric vehicles.
Back to the safety topic of electric vehicle helmets, in terms of damage probability, the damage caused by not wearing electric vehicle helmets is 2.5 times that caused by wearing electric vehicle helmets. In terms of death and injury, the death rate without electric helmet is 1.5 times that with electric helmet!
The function of electric vehicle helmet is mainly to protect the brain central system of human body
The brain is wrapped in a layer of fluid in the skull, providing shock absorption. But when the shock force exceeds the scale that this liquid can bear, the biggest enemy of the head is the hard skull. Just like the tofu we buy in the supermarket, it is immersed in water in the packaging box, which is intended to reduce the vibration force, so that the tofu will not be damaged.
You can imagine that when the head hits an obstacle in the high-speed movement, although the high-speed movement of the skull stops or slows down, the brain in the skull is still in the high-speed movement state. The situation is like throwing tofu on the wall, and the severity of the result can be imagined.
How to Protect the Life of Electric Vehicle Helmets
The fatal head wound is not the first impact on the appearance of the electric vehicle helmet, but the second impact on the head and skull. The first impact is when the electric vehicle helmet hits an obstacle, and the second impact is when the brain hits the skull. The head arrangement can be crushed or torn, causing permanent damage. And cerebral hemorrhage will add pressure to the skull and crush the brain arrangement! If there is a frontal impact, the impact of the impact will directly enter the bottom of the skull, and a strong impact will open the spine and skull, blocking the respiratory and heartbeat functions.
So now you know the importance of electric helmet?
The fatal head wound is not the first impact on the appearance of the electric vehicle helmet, but the second impact on the head and skull. Therefore, the function of electric vehicle helmet is to reduce the speed of head hitting skull. The industrial standard is to use G value to measure. The test of various certification laws and regulations for the detection of electric vehicle helmets is to place sensors in the electric vehicle helmets, let the electric vehicle helmets fall down and hit sharp metal from different heights, angles and test methods, and then detect how much G Force the inner layer of the electric vehicle helmets will encounter when the electric vehicle helmets encounter obstacles and stop moving at a high speed.
In addition to the free fall test, there are also penetration tests to test whether sharp objects can pierce the electric vehicle helmet; At the same time, there are also drop tests, deformation tests and strap tests, which are all aimed at whether the electric vehicle helmet will simply fall, the electric vehicle helmet will deform and the strap will deform.
The following are some common certification standards, which are also the most easily seen signs on the back of electric vehicle helmets.
SNELL: The detection standard value is 300Gs. The average healthy adult can withstand the impact of 400G-600G.
DOT: The maximum impact force shall not be 400Gs, and temporal constraints shall be introduced. The impact force exceeding 200Gs shall not exceed two milliseconds, and the impact force exceeding 150Gs shall not exceed four milliseconds.
SHARP: In addition to the frontal impact, SHARP pays more attention to the impact on both cheeks, such as the rotary impact, which is closer to the unexpected situation on the actual street.
