Remote-control toy motorcycle

Abstract

A remote-control toy motorcycle is composed of a body, a front wheel, a rear wheel, and a power output device. The rear wheel includes a fastening shaft; a wheel rim set for inserting the fastening shaft therethrough and for rotation driven by the power output device; a planetary gear set having a gear wheel and a plurality of planetary gears, the gear wheel having an axial hole located a center thereof for inserting the fastening shaft therethrough, the planetary gears engaging and circling the gear wheel; a unidirectional rotary member inserted through the space between the fastening shaft and the axial hole for actuating unidirectional converse rotation of the gear wheel that is forced by an external torque; a clutch set connected with the planetary gears for synchronic rotation and for expansion in high-speed rotation; and a flywheel set having a flywheel surrounding the clutch set for rotation actuated by the expansion of the clutch set, the flywheel having a plurality of cavities for receiving a plurality of weights whose number is identical to or smaller than that of the cavities.

1 . A remote-control toy motorcycle having a body, a front wheel mounted to a front part of the body, a rear wheel mounted to a rear part of the body, and a power output device, the rear wheel comprising:
 a fastening shaft;   a wheel rim set for inserting the fastening shaft therethrough;   a wheel body for receiving the wheel rim set and for rotation driven by the power output device;   a planetary gear set having a gear wheel and a plurality of planetary gears, the gear wheel having an axial hole formed at a center thereof and a plurality of annular teeth formed at an underside thereof, the planetary gears engaging the annular teeth;   a unidirectional rotary shaft inserted into the axial hole for providing the gear wheel with unidirectional rotation;   a clutch set connected with the planetary gears for expansion resulted from centrifugal effect; and   a flywheel set surrounding the clutch set for rotation driven by the expansion of the clutch set.   
   
   
       2 . The remote-control toy motorcycle as defined in  claim 1 , wherein the unidirectional rotary member is a unidirectional bearing. 
   
   
       3 . The remote-control toy motorcycle as defined in  claim 1 , wherein the unidirectional rotary member is a ratchet. 
   
   
       4 . The remote-control toy motorcycle as defined in  claim 1 , wherein the fastening shaft is inserted into the axial hole and the unidirectional rotary member is inserted between an external side of the fastening shaft and a sidewall of the axial hole. 
   
   
       5 . The remote-control toy motorcycle as defined in  claim 1 , wherein the unidirectional rotary member is rotated in a direction converse to those of the planetary gears. 
   
   
       6 . A remote-control toy motorcycle comprising a body, a front wheel mounted to a front part of the body, a rear wheel mounted to a rear part of the body, and a power output device, the rear wheel having a flywheel set mounted therein for rotation driven by the power output device, the flywheel set having a main body and a plurality of cavities annularly arranged at a predetermined interval, the cavities being received with a plurality of weights, whose number is equal to or smaller than that of the cavities and which are optionally equally received therein. 
   
   
       7 . The remote-control toy motorcycle as defined in  claim 6 , wherein he flywheel set further comprises a flywheel cover screwed to an external side of the main body for sealing the cavities and keeping the weights in the cavities. 
   
   
       8 . A remote-control toy motorcycle comprising a body, a front wheel mounted to a front part of the body, a rear wheel mounted to a rear part of the body, and a power output device, the rear wheel having a fastening shaft; a wheel rim set for inserting the fastening shaft therethrough and for rotation driven by the power output device; a planetary gear set having a gear wheel and a plurality of planetary gears, the gear wheel having an axial hole formed at a center thereof, the planetary gears engaging and circling the annular teeth; a unidirectional rotary shaft inserted the space between the fastening shaft and the axial hole of the gear wheel for actuating the gear wheel for unidirectional rotation while the gear wheel is forced by an external viscous torque; a clutch set connected with the planetary gears for synchronous rotation and for expansion resulted from centrifugal effect; and a flywheel set having a main body surrounding the clutch set for high-speed rotation driven by the expansion of the clutch set, the main body having a plurality of cavities for receiving a plurality of weights whose number is equal to or fewer than that of the cavities.