Patent ID: 8446719

Claim:
A shock-absorbing device that absorbs shock to an object comprising: a shock-absorbing member that surrounds the object and is elastically deformable; and a switching mechanism that switches the shock-absorbing member to a flat state where a gap between the shock-absorbing member and the object is small and the shock-absorbing member is flat, or to a bent state where the shock-absorbing member is bent toward the outside of the object so that the gap increases, wherein the shock-absorbing member is slidable in a predetermined direction relative to the object, and the switching mechanism includes a pressing portion that presses the shock-absorbing member in the predetermined direction and a restraining portion that brings the shock-absorbing member into the flat state by allowing the shock-absorbing member to be slid by the pressing portion relative to the object or that brings the shock-absorbing member into the bent state by restraining the shock-absorbing member from being slid by the pressing portion.