Vehicular fluid power transmitting device

Patent metadata

Field	Value
Publication number	US-9551237-B2
Application number	US-201214348124-A
Country	US
Kind code	B2
Filing date	Sep 25, 2012
Priority date	Sep 29, 2011
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

A vehicular fluid power transmitting device has a pump impeller, a turbine runner, damper device, an annular set member and a bearing assembly. The pump impeller has a pump shell. The damper device is provided between a drive source and the pump shell in an axial direction of an output shaft, and has a damper input member that is connected to the drive source, and a damper output member that is connected to the pump shell. The damper output member is connected to the annular set member that is fixed to the pump shell. The damper input member is relatively rotatably supported via the bearing assembly by the annular set member.

First claim

The invention claimed is:

1. A vehicular fluid power transmitting device comprising:
a pump impeller that has a plurality of pump blades inside of a pump shell to which torque from a drive source is input;
a turbine runner that has a plurality of turbine blades provided in positions opposite the pump blades, and a hub portion that supports the turbine blades, the turbine runner supported by a shaft end portion of an output shaft and rotated by receiving operating fluid pushed out by the pump blades;
a damper device that is provided between the drive source and the pump shell in an axial direction of the output shaft, has a damper input member, an elastic member and a damper output member, and suppresses pulsation of torque transmitted from the drive source to the pump shell, the damper input member connected to the drive source, the elastic member housed inside the damper input member, and the damper output member connected to the pump shell;
an annular set member to which the damper output member is connected, the annular set member fixed to the pump shell; and
a bearing assembly via which the damper input member is relatively rotatably supported by the annular set member, wherein:
the damper output member has a first radially outer portion and a radially inner portion;
torque from the damper input member is transmitted to the first radially outer portion via the elastic member;
the radially inner portion is fixed to an end surface, on a drive source side, of the annular set member in the axial direction;
the damper input member has a second radially outer portion and a cylindrical boss portion;
the elastic member and the first radially outer portion are housed within the second radially outer portion;
the cylindrical boss portion is curved so as to reach farther toward a radially inner side than the radially inner portion;
the bearing assembly is fitted in between a radially outer surface of the cylindrical boss portion and a radially inner surface of the annular set member; and
the bearing assembly is fitted to the radially inner surface of the annular set member, as well as fitted to a radially inner surface of the radially inner portion.

2. The vehicular fluid power transmitting device according to claim l, wherein:
the annular set member has a plurality of female threaded holes into which a plurality of set bolts screw;
the plurality of female threaded holes extend in the axial direction;
the radially inner portion is fastened to the annular set member by the set bolts; and
the damper input member has through-holes that are opposite, in the axial direction, the set bolts.

Assignees

• Yamashita Toshiya
• Itazu Naoki
• Nakashima Yoichi
• Hori Takashi
• Ebata Masaru
• Doman Yasunori
• Toyota Motor Co Ltd
• Aisin Aw Co
• Exedy Corp

Inventors

• Yamashita Toshiya
• Itazu Naoki
• Nakashima Yoichi
• Hori Takashi
• Ebata Masaru
• Doman Yasunori

Classifications

• F01D25/24 Primary

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title

• F16H2045/0252

  having a damper arranged on input side of the lock-up clutch · 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

• F16H2045/0205

  two chamber system, i.e. without a separated, closed chamber specially adapted for actuating a lock-up clutch · CPC title

• F16H2045/0294

  Single disk type lock-up clutch, i.e. using a single disc engaged between friction members · CPC title