| 摘要 |
A power transmission device (100, 200) is provided, the power transmission device comprising: a motor (12, 112) including a rotor (66, 166) having a permanent magnet (76A, 76B, 176A, 176B) embedded therein and a stator (64), and configured to generate a rotational force; a reducer (10, 110) configured to transmit the rotational force of the motor; and a wet brake mechanism (14, 114) configured to put a brake the rotation of the motor. Spaces (80) accommodating the motor, the reducer, and the brake mechanism communicate with each other so that lubricant oil can flow through the spaces. A leakage magnetic flux at an axial end face of the rotor away from the brake mechanism is greater than that of the end face toward the brake mechanism. |
