WET MULTIPLE-DISC CLUTCH

摘要

PROBLEM TO BE SOLVED: To prevent the excessive supply of lubricating oil during clutch disengagement.SOLUTION: In a clutch 1, a first tapered surface T1 is set to face a lubrication space 4 for separator plates 11, friction discs 13, a clutch hub 12 and the like, and a first oil passage 17 is opened for supplying lubricating oil onto the first tapered surface T1. A second tapered surface T2 is provided to move to be interlocked with the axial movement of a piston 14, and the first and second tapered surfaces T1 and T2 are disposed to be nested so that one tapered surface is an inner tapered surface and the other is an outer tapered surface. At an initial position of the piston 14, the first and second tapered surfaces T1 and T2 closely contact each other to close an opening of the first oil passage 17 (during clutch disengagement). The first and second tapered surfaces T1 and T2 are spaced apart in response to the axial pressing movement of the piston 14 to supply the lubricating oil from the opening of the first oil passage 17 via the lubrication space 14 (during clutch engagement). An always-open second oil passage 18 is formed in the lubrication space 4 so as to ensure necessary, sufficient lubrication during the clutch disengagement.