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发明公开
CN103683675A 用于电动机的冷却系统 有权

用于电动机的冷却系统
摘要：
本发明公开了一种用于电动机的冷却系统。在旋转轴（32）的纵通孔（32a）中，在通孔（32a）的轴向上设置有从所述通孔（32a）的内周面突出的第一突出部（32d）和第二突出部（32e）以形成用于存储油的存储区域（A），与冷却孔（32c）相平行地设置有用于将越过第一突出部（32d）而流动的油直接排放进驱动桥外壳（34）中的排放孔（32f）。因此，当油越过突出部（32d）而流动并且从油存储区域（A）溢出时，通过排放孔（32f）将溢出的油直接排放进驱动桥外壳（34）中。溢出的油是未用于使转子（54）冷却的过多的油。
摘要（英）：

The present invention discloses a cooling system for a motor. In a vertical through hole (32a) of a rotational shaft (32), a first protrusion portion (32d) and a second protrusion portion (32e) protruding from an inner peripheral surface of the vertical through hole are provided in an axial direction of the though hole (32a) to form a storage area (A) for storing oil, and discharge holes(32f) for directly discharging oil flowing over the first protrusion portion (32d) into the transaxle casing (34) are provided in parallel with the cooling holes (32c). Therefore, when the oil penetrates the protrusion portion (32d) to flow and overflows from the oil storage area (A), the oil is discharged into the transaxle casing (34) directly via the discharge holes (32f). The overflowed oil is the excessive oil that does not cool a rotor (54).

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