POWER TRANSMISSION DEVICE

摘要

A first planetary gear and a clutch are placed between a second carrier of a second planetary gear and an output shaft in the axial direction. A transmission case has a small diameter tubular portion that rotatably supports an output shaft, an annular wall portion extended radially outward from the small diameter tubular portion, and a large diameter tubular portion extended in the axial direction from the outer periphery of the annular wall portion such that the first planetary gear and the clutch are partially surrounded. A mount is fixed to a vehicle body of a vehicle so as to at least partially overlap the small diameter tubular portion, the annular wall portion, and the large diameter tubular portion as viewed in the radial direction. A parking gear of a parking lock device is coupled to the outer periphery of the second carrier.

主权项

1. A power transmission device including a multi-speed transmission that has a planetary gear and that shifts power transmitted from a driving source of a vehicle to an input member to transmit the shifted power to an output member, a parking lock device having a parking gear and a parking pawl that can be engaged with the parking gear, and a case that accommodates the multi-speed transmission and the parking lock device, wherein
the planetary gear has a carrier that is rotatably supported by a central shaft rotatably supported by the case and that is coupled to the output member such that the carrier rotates together with the output member, at least one of another planetary gear different from the planetary gear included in the multi-speed transmission and a clutch is placed between the carrier and the output member in an axial direction, the case has a small diameter tubular portion rotatably supporting the output member, an annular wall portion extended radially outward from the small diameter tubular portion, and a large diameter tubular portion extended in the axial direction from an outer periphery of the annular wall portion such that at least one of at least a part of the other planetary gear and at least a part of the clutch is surrounded, a vehicle body-side constituent member is fixed to a vehicle body of the vehicle so as to at least partially overlap the small diameter tubular portion, the annular wall portion, and the large diameter tubular portion of the case as viewed in a radial direction of the power transmission device, and the parking gear is coupled to an outer periphery of the carrier so as to rotate together with the carrier.