TH2001007017A - cooling structure - Google Patents

Abstract

The cooling structure (10) of the present invention consists of a shaft housing. transmission (40), engine oil passageway (100), engine oil storage section (50) and relief valve (63). Transmission shaft housing (40) has a motor room (41), oil passageway. The machine (100) will separate exits through the first passage (54a) and the second passage (54c) on the downstream side of the relief valve (63). The first passage (54a) leads to the engine oil storage compartment (50). The second passage (54c) ) is provided with contact holes. to each other (54b) that leads to the motor room (41)

Claims (3)

1. A cooling structure (10) comprising a housing (40) enclosing the electric motor (20), an oil passage (100) acting as an oil passage for the flow of oil for the cooling of the electric motor (20), an oil reservoir (50) constructed at the bottom of the housing (40), and a drain mechanism (63) provided on the route of the oil passage (100), wherein the housing (40) contains the motor chamber in which the electric motor (20) is enclosed. The oil passage (100) is divided into a first passage (54a) and a second passage (54c) downstream of the drain mechanism (63), the first passage (54a) leading to the oil reservoir (50), and the second passage (54c) is provided with connecting holes leading to the motor chamber. 2. A cooling structure (10) according to claim 1, wherein the contacting holes are arranged at a position such that they overlap the bottom part of the electric motor (20). 3. A cooling structure (10) according to claim 1 or 2, wherein the connecting holes are located on the bottom side relative to the vent mechanism (63), and the second passage (54c) has the form of an oil pan.