CARRIER CAPABLE OF GOING UP AND DOWN STEPS

摘要

PROBLEM TO BE SOLVED: To provide a carrier capable of going up and down steps.;SOLUTION: This carrier includes a machine frame, a transmission mechanism provided in a lower designated position and a driving mechanism. The transmission mechanism is provided with a sun gear set, a planetary gear set, driving wheels, a second gear set and one planetary frame. Separately the driving mechanism is provided. When the carrier goes up the steps, the driving mechanism drives the driving wheels, and at this time, the wheels receive the resistance of the steps to be regarded as a fixed rod, and the power is output from a connecting plate of the planetary frame through the transmission mechanism to generate the operation for striding the step and complete the operation of going the steps. When the carrier goes down the steps, the driving mechanism drives the driving wheels, and at this time, the transmission mechanism selects a relatively power-saving lever material and outputs the same by itself. The power is output from one or both relatively power-saving members of the wheels and the planetary frame through the transmission mechanism to complete the operation of going down the steps.;COPYRIGHT: (C)2003,JPO