Drive device for hybrid vehicle

Patent metadata

Field	Value
Publication number	US-2015024902-A1
Application number	US-201214375345-A
Country	US
Kind code	A1
Filing date	Feb 28, 2012
Priority date	Feb 28, 2012
Publication date	Jan 22, 2015
Grant date	—

Abstract

A drive device of a hybrid vehicle includes an engine and an electric motor acting as power sources, and further includes: a first rotating member coupled to the electric motor; a second rotating member to which power from the engine is transmitted; and a gear pair made up of helical gears formed on the first rotating member and the second rotating member to couple the first rotating member and the second rotating member in a power transmittable manner, within a case, an inner wall extending from an outer wall of the case toward an inside of the case is in the case, and an elastic member pressing the first rotating member toward the inner wall is provided in a preloaded state between the first rotating member and the inner wall.

First claim

1 . A drive device of a hybrid vehicle including an engine and an electric motor acting as power sources, and comprising: a first rotating member coupled to the electric motor; a second rotating member to which power from the engine is transmitted; and a gear pair made up of helical gears formed on the first rotating member and the second rotating member to couple the first rotating member and the second rotating member in a power transmittable manner, within a case,
an inner wall extending from an outer wall of the case toward an inside of the case being in the case, and an elastic member pressing the first rotating member toward the inner wall being provided in a preloaded state between the first rotating member and the inner wall.

2 . The drive device of a hybrid vehicle of claim 1 , wherein
the gear pair is made up of a first gear formed on the first rotating member and a second gear formed on the second rotating member and meshed with the first gear, and wherein when the electric motor outputs a torque equal to or greater than a predetermined value set in advance, the first rotating member is biased toward the outer wall of the case by a thrust force acting on the first rotating member against a bias force of the elastic member.

3 . The drive device of a hybrid vehicle of claim 1 , wherein
the inner wall is a partition wall in the case separating a motor chamber housing the electric motor and a gear chamber housing the first rotating member and the second rotating member, wherein the first rotating member is rotatably supported via an inner-wall bearing by the inner wall, wherein an inner ring of the inner-wall bearing is press-fitted into the first rotating member, and wherein an outer ring of the inner-wall bearing is pressed by the elastic member against a side wall formed on the inner wall.

4 . The drive device of a hybrid vehicle of claim 3 , wherein
a damping element suppressing resonance due to the elastic member is disposed between the inner wall and the inner-wall bearing.

5 . The drive device of a hybrid vehicle of claim 1 , wherein
a rotor shaft of the electric motor and the first rotating member is coupled by spline fitting, and wherein a damping element suppressing resonance due to the elastic member is disposed in a gap formed in a spline fitting portion between the rotor shaft of the electric motor and the first rotating member.

6 . The drive device of a hybrid vehicle of claim 3 , wherein
the first rotating member is further rotatably supported via an outer-wall bearing by the outer wall of the case, and wherein a damping element suppressing resonance due to the elastic member is disposed between the outer wall and the outer-wall bearing.

Assignees

• Hori Tetsuo
• Endo Hiroatsu
• Miyasaka Kenji
• Toyota Motor Co Ltd

Inventors

• Hori Tetsuo
• Endo Hiroatsu
• Miyasaka Kenji

Classifications

• B60Y2306/09

  Reducing noise · CPC title

• B60W20/40

  Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers {(power-up or power-down of the driveline B60W30/192)} · CPC title

• Y10S903/952

  Housing details · CPC title

• B60K6/405

  Housings · CPC title

• B60K6/445 Primary

  Differential gearing distribution type · CPC title