Driving device for toy vehicle and toy vehicle cross-reference to related application

Abstract

A driving device for a toy vehicle according to the present disclosure is a driving device for a toy vehicle, and includes: a first rotating body configured to be rotatable around a first rotation axis by a motor, the first rotating body having a wall portion formed to have a surface whose distance from the first rotation axis gradually decreases along a circumferential direction about the first rotation axis; a second rotating body configured to be rotatable around a second rotation axis by being pressed by the surface of the wall portion that rotates; and a third rotating body configured to be rotatable around a third rotation axis by the second rotating body.

What is claimed is: 
     
         1 . A driving device for a toy vehicle, the driving device comprising:
 a first rotating body configured to be rotatable around a first rotation axis by a motor, the first rotating body having a wall portion formed to have a surface whose distance from the first rotation axis gradually decreases along a circumferential direction about the first rotation axis;   a second rotating body configured to be rotatable around a second rotation axis by being pressed by the surface of the wall portion that rotates; and   a third rotating body configured to be rotatable around a third rotation axis by the second rotating body.   
     
     
         2 . The driving device for a toy vehicle according to  claim 1 , wherein
 the wall portion includes:   a first end portion at which a distance between the first rotation axis and a wall surface is maximum; and   a second end portion at which the distance between the first rotation axis and a wall surface is minimum; and   a connection portion formed to connect the first end portion and the second end portion and having a wall surface whose distance from the first rotation axis decreases as the wall surface is farther away from the first end portion and approaches the second end portion along the circumferential direction about the first rotation axis.   
     
     
         3 . The driving device for a toy vehicle according to  claim 2 , wherein
 the second rotating body includes a gear having a plurality of teeth, and   the wall portion is configured to pass through a space between two adjacent teeth while pressing the teeth to rotate the second rotating body every time the first rotating body makes one rotation.   
     
     
         4 . The driving device for a toy vehicle according to  claim 2 , wherein
 the second rotating body includes a gear having a plurality of teeth, and   a difference between a distance between the first rotation axis and the first end portion and a distance between the first rotation axis and the second end portion is larger than a pitch of the teeth of the gear.   
     
     
         5 . A toy vehicle comprising:
 a toy vehicle main body on which a motor and the driving device according to  claim 2  are mounted; and   a wheel configured to rotate by rotation of the third rotating body.   
     
     
         6 . The toy vehicle according to  claim 5 , wherein
 the first rotation axis is parallel to a traveling direction of the toy vehicle, and   the second rotation axis and the third rotation axis are perpendicular to the traveling direction of the toy vehicle.   
     
     
         7 . The toy vehicle according to  claim 6 , wherein
 the first rotating body is configured to be rotatable in a first rotation direction and a second rotation direction opposite to the first rotation direction,   the toy vehicle being configured to   move forward when the first rotating body rotates in the first rotation direction, and   move rearward when the first rotating body rotates in the second rotation direction.   
     
     
         8 . The driving device for a toy vehicle according to  claim 1 , wherein
 the wall portion of the first rotating body is formed to stand in a direction approaching the motor, and   the second rotating body is arranged between the motor and the wall portion of the first rotating body.