Self-examination of a bicycle helmet

People always have to face up to the crisis before they realize that the crisis has come. Not everyone can do when peace time is in danger. Sometimes this kind of rainy day can even be understood as worrying. With the deterioration of the ecological environment, more and more abnormal weather, more and more species have lost their homes, people’s awareness of environmental protection is awakening, low-carbon life is like a virus circulating in life, more and more people are participating in the CD-ROM. In action, more and more people have launched dusty bicycles from the garage.

Since the bicycle was invented, it has gradually become a better tool for people to travel and leisure. Especially after the bicycle sport has become a competitive sport, people are more interested in it. However, as a sport that is determined by speed, safety has become an important issue. The appearance of the bicycle helmet not only ensures the safety of the cyclist, but also improves the performance of the racing athlete. Many friends also choose helmets for the safety of themselves and their families. Some people use helmets to find cracks in helmets that didn't last long. They don't know whether to throw them away or continue to use them. Tell everyone today whether your helmet should be changed or not.

It is normal for the helmet to touch everywhere and the shell has cracks. Some of them can continue to be used, and others cannot. The main purpose of the hard shell on the surface of the helmet is to protect the styrofoam under the helmet in daily use. Although the hard shell does help to spread the force over a larger area in the event of an impact, it is the polystyrene foam that actually absorbs the impact. According to this statement, those very small cracks that appear near the vents will not seriously affect the protective effect of the helmet. If you find a large crack in the helmet, such as the edge of the helmet shell or the kind of crack connecting the two vents, it is time to replace your helmet. Another need to check the place is the helmet strap. First check for wear or damage. In normal use, the strap is the most easily worn area on the helmet. The most obvious place to check is between the chin and the ear. Checking whether it is still intact can still play a tight role. If an accident occurs and the helmet flies out of the head, no protection will be provided. Also check the buckles and the small parts through which the strap passes. Depending on the method of manufacture of the helmet, the seam may be opened and the material may weaken due to prolonged use, friction, or sweat soaking. A hidden place that must be checked is where the straps are inserted into the helmet. Also, due to the different manufacturing methods of the helmet, the band may be fixed around the inner foam or the outer plastic shell, especially the cheap models. Sometimes the friction of the belt relative to the foam may affect the inner foam, but this is not a common problem. Check and make sure that the strap is still strong and firmly fixed in the helmet. Your bike helmet has a hard plastic shell and a polystyrene foam inner layer. These foams can absorb shocks, withstand external forces through their own fragmentation, and thus reduce the strength of the head and provide protection. The inner foam layer of the helmet should not be soft or brittle. Prolonged exposure or exposure to chemicals can cause the foam to break down, which means that there is no way to protect you in the event of an accident. If this is the case, you need to replace your helmet immediately. If the foam feels firm, check for cracks, and replace if necessary. The small pits on the helmet in the picture above are only minor problems on the surface and do not affect the helmet protection function. The shell of the helmet protects its daily use. It protects the foam from damage during daily use or storage. In the event of a collision, it can also spread the force over a larger area. If the hard shell of the helmet shows soft spots, especially if there is discoloration, it may indicate that the shell is exposed to certain chemicals that can make the plastic soft. This shows that the helmet needs to be replaced because the foam underneath the hard shell has certainly deteriorated, losing or at least reducing the ability to protect the head.

"X-Men" said that if someone occasionally slips and loses his direction, it does not mean that he will always be lost. Environmental protection requires each and every one of us to do our part and start from ourselves. Starting from now, it is not too late.