| 摘要 |
<p>A driving apparatus comprises a transmission gear (70) fitted to a driving shaft (31) rotating for driving a car body, a driving gear (50) driven and rotated by a motor (41), an idle gear (60) always meshing with the driving gear, fitted by a supportbar (51) rotating around the axis of rotation of the driving gear as the center and capable of moving around the driving gear and a speed change gear (73) including a first gear (71) always meching with the transmission geart (70) and a second gear (72) having a different diameter from that of the first gear, wherein the idle gear moves with the rotation of the driving gear, so that the idle gear meshes with the transmission gear or with the second gear of the speed change gear and drives the driving shaft (31).</p> |
