Friction clutch and the automatic transmission and the vehicle continuously variable transmission and the power distributing device and a motorcycle of a power transmission apparatus for an automobile of a vehicle using the same

摘要

PROBLEM TO BE SOLVED: To provide a friction clutch, and an automobile automatic transmis sion, an automobile continuously variable transmission, an automobile power distributing device and a motorcycle power transmission using the friction clutch reducible in wear in a sliding state.;SOLUTION: In the radially opposed constitution of a pair of clutch members 1 with a plurality of rollers 2 placed in between, an angle 1 of a rolling axis of each roller 2 to the rotation axis of the clutch member 1 is set to be larger than 5 and smaller than 20, and an angle 1 of the rolling axis of each roller 2 to a plane including the rotation axis of the clutch member 1 is set to be larger than 25 and smaller than 90 to generate constantly stable frictional force. In this case, when axial load is applied to the clutch member 1, sliding friction is generated while each roller 2 rolls, so that wear is extremely small compared to the structure of clutch plates coming in face contact with each other like a multiple disc clutch.;COPYRIGHT: (C)2001,JPO