MOTOR MOUNTING SYSTEM

A motor mounting system is provided with a motor unit (3) and a frame (2) that supports the motor unit (3) via four bush mounts (21). The four bushing mounts (21) have the same structure as each other. Among the four bush mounts (21), the bush mount (21) closest to the center of gravity (G1) of the drive reaction force input to the two bush mounts (21) disposed forward of the motor unit (3) or the center of gravity (G2) of the drive reaction force input to the two bush mounts (21) disposed rearward of the motor unit (3) The bush mounting member (21) is arranged in a state of rotating to a direction in which the rigidity with respect to the load in the vertical direction is higher than the rigidity with respect to the load in the vertical direction of the other bush mounting member (21). 马达安装系统具备马达单元(3)和借助4个衬套安装件(21)支承马达单元(3)的框架(2)。4个衬套安装件(21)具有彼此相同的构造。4个衬套安装件(21)中的、距向配置到马达单元(3)的前方的两个衬套安装件(21)输入的驱动反作用力的重心(G1)、或者向配置到马达单元(3)的后方的两个衬套安装件(21)输入的驱动反作用力的重心(G2)最近的衬套安装件(21)以旋转到针对上下方向的载荷的刚性比其他衬套安装件(21)的针对上下方向的载荷的刚性高的朝向的