A helmet must be worn during riding

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. Based on this, the present invention designs a protective foldable helmet to solve the above-mentioned problems