OIL PATH STRUCTURE

摘要

An oil path structure includes: a motor case (21) having a joint surface (21a) and having a cooling oil path (22) opened to the joint surface (21a) formed therein; a generator case (31) having a cooling oil path (32) formed therein and joined to the joint surface (21a) such that the cooling oil paths (22, 32) communicate with each other; an O-ring (46) sealing between the cooling oil paths (22, 32); and a plain washer (41) limiting the flow rate of oil passing through the oil path. In the generator case (31), a recessed portion (33) is formed at a position adjacent to the joint surface (21a) and on route of the cooling oil path (32). In the recessed portion (33), the O-ring (46) in contact with the joint surface (21a) and the plain washer (41) positioned on the side of O-ring (46) opposite to the joint surface (21a) are arranged. The plain washer (41) is sandwiched between the O-ring (46) and a bottom surface (34). Thus, an oil path structure can be provided that ensures reliable sealing and allows flow rate adjustment with a simple structure.