Automatic transmission device for automobile

Patent metadata

Field	Value
Publication number	US-9273769-B2
Application number	US-201414315114-A
Country	US
Kind code	B2
Filing date	Jun 25, 2014
Priority date	Apr 28, 2009
Publication date	Mar 1, 2016
Grant date	Mar 1, 2016

Abstract

An automatic transmission device for an automobile includes a torque converter accommodated in a torque converter housing, a stator shaft supporting a stator of the torque converter, a torque converter housing, a stator shaft supporting a stator of the torque converter, a torque converter sleeve provided concentrically with the stator shaft and coupled with an inner periphery side of an impeller shell of the torque converter, a first bearing provided between an inner peripheral surface of the torque converter sleeve and an outer peripheral surface of the stator shaft, and a second bearing provided between an outer peripheral surface of the torque converter sleeve and an inner surface of the torque converter housing.

First claim

The invention claimed is:

1. An automatic transmission device for an automobile, said device comprising:
a torque converter accommodated in a torque converter housing;
a stator shaft supporting a stator of the torque converter;
a torque converter sleeve provided concentrically with the stator shaft and coupled with an inner periphery side of an impeller shell of the torque converter;
a first bearing provided between an inner peripheral surface of the torque converter sleeve and an outer peripheral surface of the stator shaft;
a second bearing provided between an outer peripheral surface of the torque converter sleeve and an inner surface of the torque converter housing;
an oil pump placed in a position separated outwardly in a radial direction from an input shaft of the torque converter; and
a drive sprocket fitted to an outer periphery of the torque converter sleeve to drive the oil pump,
wherein the first bearing is provided on an inner diameter side of a fitting portion of the torque converter sleeve, the fitting portion being fitted to the drive sprocket.

2. The automatic transmission device for an automobile according to claim 1 , wherein a sealing member to seal a space between the stator shaft and the torque converter sleeve is attached to the stator shaft.

3. The automatic transmission device for an automobile according to claim 1 , wherein a sealing member to seal a space between the stator shaft and the torque converter sleeve is attached to the stator shaft.

4. The automatic transmission device for an automobile according to claim 1 , further comprising a sealing member interposed between the inner peripheral surface of the torque converter sleeve and an outer peripheral surface of the first bearing, the sealing member sealing an oil chamber formed between the inner peripheral surface of the torque converter sleeve and the outer peripheral surface of the stator shaft.

5. The automatic transmission device for an automobile according to claim 4 , wherein the sealing member sealing the oil chamber causes hydraulic pressure supplied from the oil chamber to act on the fitting portion of the torque converter sleeve to generate a thrust force that presses the drive sprocket in an axis direction thereof, said device further comprising a washer provided on an axial end face of the drive sprocket.

Assignees

• Toyota Motor Co Ltd

Inventors

• Mizuno Yoshihiro
• Tanaka Koichi
• Ogata Yusuke

Classifications

• F16H57/0441

  Arrangements of pumps · CPC title

• F16H45/02

  with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) · CPC title

• Y10T74/19149

  with fluid drive · CPC title

• F16H41/02 Primary

  with pump and turbine connected by conduits or ducts · CPC title

• F16H7/06

  with chains · CPC title