| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve reliability in a clutch structure, by suppressing generation of thermal stress in a clutch plate and a mating plate, by enhancing cooling efficiency of the clutch plate and the mating plate. <P>SOLUTION: This wet multiple disc clutch device is provided for connecting a clutch shaft and a clutch gear, by press-fitting the clutch plate and the mating plate 40 by pressing force of a piston part. A plurality of friction materials are arranged on at least one plate surface of the clutch plate and the mating plate 40, and an oil flow passage groove 43 for making cooling boil O flow is formed between these friction materials. The oil flow passage groove has a curved flow passage of extending in the retreating direction to the rotational direction between an oil inflow part on the inside in the radial direction and an oil outflow part on the outside in the radial direction and introducing the cooling oil in the retreating direction from the rotational direction by centrifugal force in rotation. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
