| 摘要 |
A toy helicopter with four electric motors having a main body, at least one battery, and front and rear coaxial rotor assemblies. The front coaxial rotor assembly is made up of front upper and lower rotors and a front stabilizing bar operatively connected to the front upper rotor. The rear coaxial rotor assembly is made up of rear lower and upper rotors and a rear stabilizing bar operatively connected to the rear upper rotor. The helicopter includes a means for concentrically rotating the front lower and upper rotors in opposite directions and a means for concentrically rotating the rear lower and upper rotors in opposite directions. The means for concentrically rotating the front lower and upper rotors in opposite directions includes first and second front electric motors, and the means for concentrically rotating the rear lower and upper rotors in opposite directions includes first and second rear electric motors. |
