Motor assembly, drive device for hybrid vehicle, and method of manufacturing the same

摘要

A drive device for a hybrid vehicle, the drive device includes: an input shaft and an output shaft, which are supported by a case to be rotatable around a rotation-axis; a motor, which includes a rotor integrally coupled with the output shaft and a stator fixed to the case; an input-side rotation member and an output-side rotation member, which have an annular shape; a rotation angle sensor, which detects a rotation angle of the rotor, wherein the rotation angle sensor includes: a rotating sensor member coupled with the output-side rotation member; and a fixed sensor member fixed to the case to detect an angle between the rotating sensor member and the fixed sensor member; a protrusion, which protrudes in a radial direction; a groove to receive the protrusion to be inserted; and a restriction portion, which restricts relative rotation between the rotating sensor member and the output-side rotation member.

主权项

1. A motor assembly comprising:
an output shaft which is supported by a case to be rotatable around a rotation-axis; a rotor which is integrally coupled with the output shaft; a stator which is fixed to the case; a resolver which detects a rotation angle of the rotor, wherein the resolver includes:
an output-side rotation member that has an annular shape and is integrally coupled with the output shaft;a resolver rotor that is coupled with the output-side rotation member and is disposed coaxially with the rotation-axis, wherein a fitting hole is formed in the resolver rotor and is disposed coaxially with the rotation-axis; anda resolver stator that is fixed to the case coaxially with the rotation-axis to detect an angle between the resolver rotor and the resolver stator; a protruding portion that protrudes from an end face of the output-side rotation member, wherein the protruding portion is fitted into the fitting hole; a protrusion which is provided at the resolver rotor to protrude from the fitting hole inward in a radial direction; a groove which is provided concavely at the protruding portion to receive the protrusion inserted in a rotation-axis direction; and a restriction portion which restricts relative rotation between the resolver rotor and the output-side rotation member, wherein the restriction portion is formed at a position of end face of the output-side rotation member, which is closer to the rotation-axis than the protrusion, by swaging so that gaps between the protrusion and the groove are filled.