Torque fluctuation absorbing apparatus

摘要

A torque fluctuation absorbing apparatus absorbing a torsional vibration includes a plate member configured to be provided at a power transmission system and including a rolling guide surface, and a mass member rolling on the rolling guide surface of the plate member. The rolling guide surface includes plural first rolling guide surfaces each formed in an arc shape and provided radially inward relative to an outer circumferential portion of the plate member to be arranged in a circumferential direction and a second rolling guide surface allowing the mass member to roll on a locus which is different from a locus on the first rolling guide surface formed in the arc shape. Loci of the mass member are seamlessly switched from the locus in which the mass member rolls on the first rolling guide surface to the locus in which the mass member rolls on the second rolling guide surface.

主权项

1. A torque fluctuation absorbing apparatus absorbing a torsional vibration of a power transmission system in response to a torque fluctuation of an engine, comprising:
a plate member configured to be provided at the power transmission system and including a rolling guide surface; a mass member rolling on the rolling guide surface of the plate member, the mass member possessing an outer periphery; an anti-skid member attached to the outer periphery of the mass member; the rolling guide surface including a plurality of first rolling guide surfaces each formed in an arc shape and provided radially inward relative to an outer circumferential portion of the plate member to be arranged in a circumferential direction and a second rolling guide surface allowing the mass member to roll on a locus which is different from a locus on the first rolling guide surface formed in the arc shape; the plurality of first rolling guide surfaces formed to be adjacent to one another in a circumferential direction via the second rolling guide surface, the plurality of first rolling guide surfaces including a plurality of arc shaped outer periphery side rolling guide surfaces arranged adjacent to one another in a circumferential direction at an outer periphery portion of the plate member; the mass member configured to move to the adjacent first rolling guide surface via the second rolling guide surface when a torsional vibration of the power transmission system is assumed to be equal to or greater than a predetermined level; the second rolling guide surface being provided to connect the first rolling guide surfaces adjacent to each other; the second rolling guide surface configured to guide the mass member to move to the adjacent outer periphery side rolling guide surface when the torsional vibration of the power transmission system is assumed to be equal to or greater than the predetermined level; and loci of the mass member are seamlessly switched from the locus in which the mass member rolls on the first rolling guide surface to the locus in which the mass member rolls on the second rolling guide surface.