Title:
トルクコンバータ用のロックアップ装置
Document Type and Number:
Japanese Patent JP4949503
Kind Code:
B2
Abstract:
A lock-up device for a torque converter is provided whereby vibration attributed to coil springs can be reliably inhibited. In the lock-up device, two large coil springs of each pair are disposed in series. Stiffness ratios α1 and α2 between an N-th torsional stiffness and an (N+1)-th torsional stiffness are set to be greater than or equal to 1.5 and less than or equal to 3.0 (N is positive integer) in a multistage torsional characteristic produced by compressing at least one of the two large coil springs of each pair and a small coil spring in accordance with a relative angle between an input rotary member and an output rotary member.
Inventors:
Yoshihiro Matsuoka
Application Number:
JP2010128650A
Publication Date:
June 13, 2012
Filing Date:
June 04, 2010
Export Citation:
Assignee:
EXEDY Friction Material Co.,Ltd.
International Classes:
F16H45/02
Domestic Patent References:
| JP2008196540A | ||||
| JP2000018273A | ||||
| JP2008025629A | ||||
| JP2006029553A | ||||
| JP2004278744A | ||||
| JP2010031951A | ||||
| JP2009243599A | ||||
| JP2009156270A | ||||
| JP2009243532A |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation