骑行中必须要要佩戴头盔，目前的头盔通常包括硬质的外壳、柔性的内衬，外壳

A helmet must be worn during riding. The current helmet usually includes a hard shell and a flexible inner lining. The outer shell is mainly used to prevent the head from sliding on the ground and causing injury. The inner lining makes the part that touches the head soft and comfortable. The inner lining is directly fixed and affixed to the outer shell. There is no buffer between the two. Although the outer shell can avoid the damage caused by sliding in the event of an accident, it cannot prevent the direct hard collision damage. Although some helmets are between the outer shell and the inner lining Shock-absorbing parts are added, but the shock-absorbing effect is average, and the protective effect on the head is poor. Moreover, the existing helmets generally do not have a folding function, which makes it inconvenient to carry. <br>Based on this, the present invention designs a protective foldable helmet to solve the above-mentioned problems

Helmets must be worn in cycling, the current helmet usually includes a hard shell, flexible lining, housing is mainly used to prevent the head from sliding on the ground to cause injury, lining makes contact with the head part softer and more comfortable, some linings directly fixed to the housing, there is no buffer between the two, in the event of an accident can be caused by the shell to avoid sliding damage, but can not prevent direct hard collision damage, although some helmets between the shell and lining added shock-absorbing components, but the shock-absorbing effect is generally, The head protection effect is poor, and the existing helmet generally does not have folding function to carry inconvenient.<br>Based on this, the invention designs a protective collapsible helmet to solve the above-mentioned problems

Helmets must be worn during riding. The current helmets usually include a hard shell and a flexible lining. The shell is mainly used to prevent the head from sliding on the ground and causing injury. The lining makes the part contacting the head soft and comfortable. Some of the linings are directly fixed in the shell, and there is no buffer between them. Although the shell can avoid the injury caused by sliding in case of an accident, it can not be used Although some helmets add shock absorption parts between the shell and the inner lining, the shock absorption effect is general, and the head protection effect is poor. Moreover, the existing helmets generally do not have folding function, which makes it inconvenient to carry.<br>Based on this, the invention designs a protective foldable helmet to solve the problems mentioned above<br>