Patent ID: 11912084
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An expandable and contractable wheel structure comprising:
two rotors that share a rotation shaft;
a plurality of U-shaped arms each of which bends at a central part of the each arm, both ends of each arm being connected to respective ones of the two rotors;
arc-shaped leaf springs connected between the U-shaped arms,
treads, each attached to an outer surface of a respective leaf spring; and
wherein the arc-shaped leaf springs and treads are arranged to surround a periphery of the wheel,
wherein the two rotors and the U-shaped arms alleviate an impact and a vibration given to a vehicle from a road surface by converting the impact and the vibration into rotational kinetic energy of the rotors and, by a crank motion of the arms and the rotors, convert the rotational kinetic energy of the rotors into expansion and contraction of an outer diameter of the wheel,
wherein curvature of an outer periphery of the wheel and a shape of the tread is maintained by causing by the arc-shaped leaf springs, and
wherein the plurality of U-shaped arms and the tread are deformed to distribute and absorb a horizontal distortion applied to a wheel contact patch of the wheel when the vehicle turns.