Title:
ロックアップクラッチ機構
Document Type and Number:
Japanese Patent JP4979295
Kind Code:
B2
Abstract:
The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover having an engagement surface capable of being engaged with the lock-up piston and in which a friction material is stuck to wither one of the lock-up piston and the front cover and in which engagement and disengagement are performed in accordance with a hydraulic pressure difference between the front cover and the lock-up piston and wherein the friction material includes a first flat friction surface disposed at an outer diameter side and a second tapered friction surface disposed at an inner diameter side and further wherein, when the lock-up piston and the front cover are slip-controlled, the first friction surface is engaged with uniform face pressure, and, when the lock-up piston and the front cover are substantially integrally joined with a great hydraulic pressure difference under slip control, maximum face pressure is generated at a border between the first friction surface and the second friction surface.
Inventors:
Hideki Matsumoto
Hideaki Takabayashi
Chisato Yagi
Hideaki Takabayashi
Chisato Yagi
Application Number:
JP2006208099A
Publication Date:
July 18, 2012
Filing Date:
July 31, 2006
Export Citation:
Assignee:
NSK Warner Co., Ltd.
International Classes:
F16H45/02
Domestic Patent References:
| JP8285037A | ||||
| JP5099297A | ||||
| JP11230305A | ||||
| JP6346951A |
Attorney, Agent or Firm:
Okabe
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Teruhisa Motomiya
Seiichiro Takahashi
Koji Yoshizawa
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Teruhisa Motomiya
Seiichiro Takahashi
Koji Yoshizawa