First of all, I will determine the type of choice. I will briefly list the applicable environment and advantages and disadvantages of three helmets: half helmet: the first choice for commuting in urban areas is half helmet (3/4 helmet). It is easy to take off and wear cool helmets for drinking, smoking and speaking. Half helmets have one disadvantage: they cannot protect the chin. Full helmet: I always wear full helmet for long-distance motorcycle riding to protect my head in an all-round way. Disadvantages: it's not easy to take it off or wear it, it's not cool, it's not convenient to drink water, smoke and talk. Uncover helmet: It is heavier than full helmet and half helmet. It takes into account all the functions of half helmet and full helmet. I think there is a disadvantage: the quality of uncover buckle affects the safety factor (I have experienced 150 yuan of uncover helmet to crash my chin).
Let's talk about my ideas and requirements for choosing helmets. The requirements for choosing helmets are: reliable quality, double mirrors, "faceless helmet" prior to "full helmet" prior to "combination helmet", and good ventilation system. The order of the above conditions is from heavy to light. When I bought the first helmet, I thought it was safe to walk at night with lights on it, so I gave priority to having lights on it. The combination helmet was not as convenient as I thought. At the beginning, the material also looked at carbon fiber. Later, I saw many SHARP evaluation five-star helmets were also ABS, so I didn't get tangled. When ABS and ABS were different, only a few big factories would not be too bad.
Reliable quality: DOT American standard is not necessary to submit for inspection. I think many small manufacturers' helmet labels DOT are not reliable, and large manufacturers can still believe it, otherwise only meet ECE. It would be better if there were snell and sharp. Double mirror: This is very useful when facing the sun in the morning and evening, and when the sun is strong at noon. Uncovering helmets: It is too convenient for people wearing glasses, because it avoids many situations of removing helmets. For example, when the phone is plugged into the ear after being lifted, you can answer the phone, drink water, eat, smoke, etc. during long-distance riding. The strength is slightly weaker than full helmets, but it is worth it for convenience.
Ventilation system: For personal reasons, I'm afraid of being stuffy. It doesn't matter if it's hot. Don't be stuffy, or my sweat will flow in spring, summer, autumn and winter. What kind of brand is better? It's a big brand. Every penny counts. The quality is guaranteed. I don't recommend it here.
The structure of the helmet There are four types of motorcycle helmets according to the use. The protection scope of the 1/2 helmet does not include ears; The protective range of the 3/4 helmet is extended to the ear than that of the 1/2 helmet; The side of the open helmet extends downward more than that of the 3/4 helmet. These three helmets are collectively called half helmets. The helmet body protection scope of the full helmet includes the eye, face and jaw parts. The shell and jaw protection parts are of an integrated structure, and the four helmets are respectively.
Accident analysis data In order to verify the important role of helmets in protecting the head in motorcycle traffic accidents, the Japan Traffic Accident Analysis Center conducted a statistical analysis of 280 motorcycle traffic accidents in Ibaraki, Japan, in 2001.
At the time of the accident, more than half of the helmet fell off due to failure to fasten the buckle correctly as required, which prevented the helmet from functioning properly; There were 6 cases in which the buckles were correctly fastened but the helmets also fell off, of which 5 were wearing 1/2 helmets.
The rate of head injury without helmet was 67.4%, 2.19 times higher than that with helmet. It can be seen that the effect of wearing helmet is very obvious. In the event of an accident, the proportion of head injuries caused by helmet falling off is about 1.98 times higher than that caused by helmet not falling off, and the death rate is about 4.35 times higher. Therefore, it is very important to fasten the buckle correctly to prevent the helmet from falling off in case of an accident.
