TORQUE CONVERTER LOCKUP DEVICE

Title:

TORQUE CONVERTER LOCKUP DEVICE

Document Type and Number:

Japanese Patent JP2013060997

Kind Code:

A

Abstract:

To reduce an axial dimension of a lockup device, allowing the overall space occupied by a torque converter in the axial direction to be compact, and reduce the number of parts.

The lockup device includes a piston 10, first and second plates 11, 12, and a plurality of outer circumferential side and inner circumferential side torsion springs 14, 15. The piston 10 presses or releases pressing of a friction member 19 fixed to a side surface of the piston 10 against a front cover 2. Furthermore, the piston 10 has a plurality of engaging parts 10c formed with a portion thereof bent towards a turbine. The second plate 12 is coupled to the turbine. The outer circumferential side torsion springs 14 are placed between the piston 10 and the first plate 11, and ends thereof in a circumferential direction are engaged with the engaging parts 10c of the piston 10 to transmit torque from the piston 10 to a first plate 11 side.

Inventors:

KAWAHARA HIROKI
USHIO HIROYUKI
TOMIYAMA NAOKI

Application Number:

JP2011199009A

Publication Date:

April 04, 2013

Filing Date:

September 13, 2011

Export Citation:

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Assignee:

EXEDY CORP

International Classes:

F16H45/02; F16F15/134

Domestic Patent References:

JPH08303554A	1996-11-19
JPH09507903A	1997-08-12
JPS63128359U	1988-08-22
JP2011122640A	2011-06-23
JP2011052726A	2011-03-17
JP2000002312A	2000-01-07
JPH08303554A	1996-11-19
JPH09507903A	1997-08-12
JPS63128359U	1988-08-22

Foreign References:

WO2011024640A1

2011-03-03

Attorney, Agent or Firm:

Shinki Global IP Patent Corporation

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