| 摘要 |
<p>The present invention provides a hollow rotation reduction gear. According to an embodiment of the present invention, the hollow rotation reduction gear comprises a case (10) having a rotor coupling part (12); a hollow shaft member (20) provided for the case (10); a rotor (30) coupled to the hollow shaft member (20) to rotate pivotally to a bearing; a motor (4) having a motor shaft (5) to transfer rotational force to the rotor (30) and coupled to one side of the case (10); a driving gear (6) provided for the motor shaft (5) of the motor (4); a driven gear (7) provided on the an outer circumference of the rotor (30) and engaged with the driving gear (6); a motor supporter (60) coupled to the case (10) via a coupling means such that the motor (4) is supported on one side of the case (10), the motor supporter being moved back and forth in a transversal direction of the case (10); and a control volt (70) configured to move the driving gear (6) relative to the driven gear (7) of the rotor (30), the driving gear (6) being moved back and forth in both sides of the motor supporter (60), supported on the case (10) and mounted on the motor (4), the motor supporter (60) and the motor shaft (5) of the motor (4), wherein the bearing comprises an outer bearing sandwiched between the rotor coupling part (12) and the outer circumference of the rotor (30) and an inner bearing sandwiched between an inner circumference of the rotor (30) and an outer circumference of the hollow shaft member (20).</p> |
