Vehicle drive device

Abstract

A vehicle drive device is realized having a configuration in which a rotor member of an electric rotary machine and a rotating housing of a fluid coupling are linked via a disk-shape member, wherein the drive device is kept compact in the radial dimension, ensuring easy mountability on a vehicle. A rotor member (21) and a rotating housing (60) are linked via a disk-shape member (8), and an outer peripheral fixing part (81) of the disk-shape member (8) is formed in the shape of a truncated cone surface which, from the side of the electric rotary machine (MG) to the side of the fluid coupling (TC) in the axial direction (L), expands outwards in the radial direction (R). The coupling-side linking part of the fluid coupling (TC) is fixed to the rotation housing (60) in a position having a portion overlapping with the rotor housing (60) seen from the axial direction (L), and has a linking contact surface (65A) contacted by the outer peripheral fixing part (82). The linking contact surface (65A) is provided so as not to overlap with the electric rotary machine (MG) seen in the direction orthogonal to said linking contact surface (65A).

Description

technical field [0001] The present invention relates to a vehicle drive device including a rotating electric machine and a fluid coupling arranged coaxially with the rotating electric machine on one side in the axial direction of the rotating electric machine. Background technique [0002] As for the drive device for a vehicle as described above, for example, there is a technique described in Japanese Patent Application Laid-Open No. 2006-137406 (Patent Document 1). In addition, in the description of this background art column, the component names of patent document 1 are quoted within parentheses and demonstrated. In the structure described in Patent Document 1, as in the document figure 1 As shown, the rotor member [rotor 12 and drum member 13] of the rotating electrical machine [electric motor] and the rotating housing of the fluid coupling [torque converter 1] pass through the disc-shaped member [plate member 10] and the connecting member [Second spline shaft 11] and c...

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the radial dimension of the periphery of the coupler-side connecting portion has to be increased, making it difficult to reduce the radial dimension of the drive device.

In addition, since the diameter of the fluid coupling [torque converter 1] needs to be smaller than the diameter of the coupler-side coupling portion, there is a problem that it is difficult to secure sufficient mounting space on the vehicle side where the drive unit is mounted. The diameter of the fluid coupling [torque converter 1], which leads to a decrease in the performance and efficiency of the fluid coupling [torque converter 1]

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