| 摘要 |
PROBLEM TO BE SOLVED: To provide a wet type multiple disc clutch capable of feeding sufficient amount of lubricating oil to a friction plate on a central side in the axial direction to improve the durability of the friction plate. SOLUTION: Through-holes 93a to 93g for communicating an inner peripheral face with an outer peripheral face are arranged in rows in X1-X2 direction at different phase positions inω1-ω2 direction in a hub member 81 of the hydraulic clutch 1. Larger number of through-holes 93b, 93c, 93d, 93e are arranged on a central side in the X1-X2 direction than the number of through-holes on an outer side in the X1-X2 direction on outer friction plates 91b, 91c, 91d, 91e and inner friction plates 92b, 92c, 92d on the central side in the X1-X2 direction to feed larger amount of lubricating oil when compared with outer friction plates 91a, 91f, 91g and inner friction plates 92a, 92e, 92f, 92g on the outer side in the X1-X2 direction. Consequently, it is possible to prevent the occurrence of insufficiency of lubricating oil to be fed to the outer and inner friction plates on the central side where heat generated by friction is likely to be collected when compared with the outer and inner friction plates on the outer side in the X1-X2 direction. COPYRIGHT: (C)2008,JPO&INPIT
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