| 摘要 |
PURPOSE: A multi-stage transmission type driving device prevents the interference with other components by reducing an installation space for a gear which increases rotation torque generated in a motor. CONSTITUTION: A first deceleration unit (20) includes a first line gear and a first planetary gear and performs first deceleration. A second deceleration unit (30) includes a second line gear and a second planetary gear and performs second deceleration. A third deceleration unit (40) includes a third line gear rotating by being connected to the second deceleration unit and a third planetary gear rotating along the outer circumference of the third line gear and performs third deceleration. A connection gear (50) rotates with the third deceleration unit and includes a tooth form formed along the outer circumference. A power transmission member (70) connects the connection gear and an output gear separated from the connection gear. |
