Biped toy that can walk on two feet

Abstract

By attaining a certain correlation between shifting the weight of a toy main body and shifting the center of gravity the toy main body between legs thereof there is provided a biped toy that can walk on two feet as naturally as a human being walks without falling down. Left and right legs can be forwarded as naturally as the human being does by positioning the center of gravity above one of the legs which supports the toy main body. With a view to eliminating unstable actions of leg portions, fulcrums thereof are positioned rearward, with a view to eliminating unstable actions of a torso, a fulcrum thereof is positioned rearward, and with a view to eliminating unstable actions of the toy main body, fulcrums of the left and right foot portions are each positioned either inwardly or outwardly.

What is claimed is:  
     
         1 . A biped toy that can walk on two feet by virtue of the driving force of a motor, wherein legs are rotatably supported on a torso, wherein said motor having disc cams mounted on an output shaft thereof and levers for transmitting the rotations of said cams are disposed in the interior of said torso, wherein said legs are each constituted by leg portions and a foot portion, said leg portions and said foot portion being each rotatably supported, and wherein a link mechanism is disposed in each of said legs to which the driving force is transmitted by said levers, whereby with the right leg of said legs being stepped forward by a step a toy main body is inclined leftward so that the center of gravity thereof is positioned directly above the left leg of said legs, then, in order to allow said left leg to alternately be stepped forward by a step said center of gravity is shifted to said right leg, and after said center of gravity has been so shifted said left leg is lifted up while said torso is being shifted rearward so that the weight thereof is so shifted for advancement.  
     
     
         2 . A biped toy that can walk on two feet as set forth in  claim 1 , wherein said biped toy can walk while lifting up said left and right legs alternately by positioning said center of gravity above either said left leg or said right leg which bears the weight of said toy main body.  
     
     
         3 . A biped toy that can walk on two feet as set forth in  claim 1 , wherein joint portions of said leg portions can be flexed in a certain direction by positioning fulcrums of said leg portions rearward.  
     
     
         4 . A biped toy that can walk on two feet as set forth in any of  claim 1 , wherein said torso can be inclined forward by positioning a fulcrum of said torso rearward.  
     
     
         5 . A biped toy that can walk on two feet as set forth in any of  claim 1 , wherein the balance of said toy main body can be maintained by positioning fulcrums of said foot portions inwardly or outwardly.