| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable speed control device for a toroidal type continuously variable transmission capable of correcting a deviation of change gear ratio by thermal expansion difference between parts in the variable transmission without changing a feedback gain from a power roller supporting member to a variable speed control valve, while aiming at strengthening and weight reduction of the continuously variable transmission. SOLUTION: The variable speed control device for toroidal type continuously variable transmission is provided with a speed change link 11 in which a feedback link 10 and a speed change control valve 6 are mutually connected to perform a speed change ratio feedback control by transmitting a rotation amount of a trunnion 4 to the speed change control valve 6 so as to make an actual speed change ration a target speed change ratio. In components of the variable speed control device, a fixing element for a variable speed control device case and valve body 7, and a speed change mechanism element actuated in speed change are manufactured by materials having different thermal expansion coefficients. The temperature compensation member 12 which absorbs a stroke of the speed change control valve 6 developed by the difference between thermal expansion coefficients of a fixing member and a speed change mechanism element, is provided between the spool 6a of the speed change control valve 6, and the coupling member 13 of the spool 6a and the change speed link 11.
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