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Title:
POWER TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2009127840
Kind Code:
A
Abstract:

To provide a power transmission device for suppressing wasteful power consumption due to drag torque.

The power transmission device 10 uses an engaging mechanism 12 for changing the condition of a power transmission mechanism 11 which is provided in a power transmission passage between an output shaft 2a of an internal combustion engine 2 and a driving shaft 4 to change the rotating speed of the driving shaft 4 relative to the rotating speed of the output shaft 2a. The engaging mechanism 12 has a wet type clutch 50 for changing over a pair of friction members 51, 52 between an engaging condition and a disengaging condition, and a dog clutch 40 for changing over a pair of clutch discs 41, 42 between an engaging condition and a disengaging condition. The second friction member 52 is fixed to a case 13, and the first friction member 51 is provided to be rotated integrally with the second clutch disc 42. The first clutch disc 41 is provided to be rotated integrally with a sun gear 31 of the power transmission mechanism 11.


Inventors:
Ebuchi, Hiroaki
Kimura, Hiromichi
Application Number:
JP2007000307048
Publication Date:
June 11, 2009
Filing Date:
November 28, 2007
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F16D29/00; F16D27/10; F16D48/02; F16D48/06
Domestic Patent References:
JPH10264672A
JPH11325199A
JP2004074928A
JP2002067722A
JP2001105908A
JP2005163946A
JP2007240008A
JP2006226206A
JP2003127687A
JP2000081119A
JP2005014797A
Attorney, Agent or Firm:
山本 晃司
江上 達夫
中村 聡延