ANTI ROTATION APPARATUS FOR MAIN ROTER OF MODEL HELICOPTER

摘要

An anti-rotation apparatus for a main rotor of a model helicopter is provided to prevent a main rotor from being rotated even if an engine is started and an accelerating lever is operated to prevent an accident. A model helicopter includes a main rotor(161) that rotates a main blade by receiving engine power and has a space portion(163) formed therein. The main rotor and a main shaft(160) are supported by a bracket. A hole is formed on a bracket(200) supporting the main rotor, and a pin(205) is installed to make the lower end thereof inserted into the space portion through the hole(202) to control the rotation of the main rotor. A gear portion is formed on the upper part of the pin. A separate motor gear is engaged with the gear portion to perform the vertical motion of the pin.