| 摘要 |
The present invention relates to a friction clutch comprising: a pressure plate movable in a predetermined direction to engage and/or disengage the clutch; a cam face formed on a side of the pressure plate; an opposing member having an opposing face that faces the cam face; a centrifugal weight arranged between the cam face and the opposing member; and an urging member configured to urge the centrifugal weight toward the cam face side via the opposing member, wherein an angular velocity w represented by the equation É 2 = (1/m)·[F(tan± + tan²)/R] increases when a parameter R increases and the angular velocity É decreases when the parameter R decreases, in said equation the mass of the centrifugal weight is m, the revolution radius that is the distance from the rotation center of the centrifugal weight to the center of gravity of the centrifugal weight is R, the angle formed by a radial line and a tangent line of a point of the cam face being in contact with the centrifugal weight in the vertical cross section containing the rotation center is ±, the angle formed by the radial line and a tangent line of a point in the opposing face being in contact with the centrifugal weight in the vertical cross section containing the rotation center is ², and the urging force of the urging member that urges the opposing member in the predetermined direction is F. |
