| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor unit capable of improving a heat dissipation performance of a motor case.SOLUTION: The motor unit comprises: a motor case 11 in which a motor 20 is accommodated; and a joint arm part 15 which is formed integrally in the motor case 11 and connected to an upper link 71 and a lower link 72 of a suspension device. The motor unit is characterized in providing a hole 16 for cooling which penetrates the joint arm part 15 and of which the starting point and the ending point are located outside of the motor case 11. Thus, a superficial area of the joint arm part 15 increases and the heat dissipation performance of the motor case 11 is improved by the increased superficial area.SELECTED DRAWING: Figure 2 |
