Drive force transmission device

摘要

A drive force transmission device includes a motor, a transmission, a motor case, and a seal member. The motor is disposed in a dry space within a motor housing. The transmission is disposed in a wet space within a transmission case. The motor case covers an outer periphery of the motor housing and is coupled to the transmission case. The seal member is between the motor case and the motor housing and isolates the wet space and the outer space. The motor housing is divided into a divider wall housing dividing off the wet space and an outer wall housing dividing off the outer space, the divider wall housing being a material lighter than a material of the outer wall housing and integrally coupled thereto. The divider wall housing is divided from the outer wall housing at a position nearer to the dry space than the seal member.

主权项

1. A drive force transmission device, comprising:
a motor housing; a transmission case; a motor disposed in a dry space within the motor housing; a transmission disposed in a wet space within transmission case; a motor case covering an outer periphery of the motor housing and being coupled to the transmission case, so as to form an outer space between the motor case and the motor housing; and a seal member, interposed between the motor case and the motor housing, the seal member isolating the wet space and the outer space from each other, the motor housing being divided into a divider wall housing dividing off the wet space and an outer wall housing dividing off the outer space, the divider wall housing being a material lighter than a material of the outer wall housing and integrally coupled thereto, and the divider wall housing being divided from the outer wall housing at a position nearer to the dry space than the seal member.