Patent ID: 8657043

Claim:
A crawler type traveling device comprising: a driving wheel driven by a driving axis; idler wheels having axes parallel to that of the driving wheel; and a crawler belt which is spooled around the driving wheel and the idler wheels and travels around the driving wheel and the idler wheels; wherein the crawler belt comprises: an inner crawler belt having an engaging structure engaging with the driving wheel, the inner crawler belt being driven by the driving wheel; an outer crawler belt encircling circumferentially the outside of the inner crawler belt; a plurality of elastic members connecting the inner crawler belt and the outer crawler belt along the circumferential direction of the crawler belt; and a plurality of crawler plates mounted to the outer crawler belt, and having a projecting portion for engaging with the ground, wherein each of the inner crawler belt and the outer crawler belt is a single member made of a thin metal plate or resin plate having a ring shape and flexibility, and wherein the elastic members connecting the inner crawler belt and the outer crawler belt are made of a thin metal plate or resin plate which is elastic and has a curved shape.