| 摘要 |
A continuously variable transmission device of the present invention includes an input shaft (20), an output shaft (30), an input roller (50), an output ring (80), a transmission ring (90), a plurality of planetary rollers (60) including a first conical portion (61) which is externally contacted to the input roller and internally contacted to the output ring and a second conical portion (62) which is internally contacted to the transmission ring, a movable holder (70) which holds the plurality of planetary rollers to be capable of rotating about each rotating axis line and revolving about the center axis line, and a loading cam mechanism (CM1, CM2) which generates a thrust load. Here, the input roller (50), the output ring (80), and the transmission ring (90) are formed so that each face (52, 82, 91) being contacted to the planetary roller is formed to have a convex curved face having a predetermined curvature, and the planetary rollers are supported by the movable holder so that an inclination angle of a rotation axis line against the center axis line is variable. According to the above, the planetary rollers are automatically balanced to positions where a moment exerted thereto is continuously zero. |
