| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydraulic control device enclosing hydraulic pressure by sealing to prevent leakage of hydraulic pressure from a portion to be lubricated. <P>SOLUTION: In the hydraulic control device, a movable sheave 5b is suitable for be movable forward and backward to a shaft part 13 integral with a fixed sheave 5a, a hydraulic chamber 5c pressing the movable sheave 5b to the fixed sheave 5a is provided, and an oil passage 28 supplying/discharging the hydraulic pressure to/from the hydraulic chamber 5c, and connecting between fitted portions 14 of the movable sheave 5b and the shaft part 13 to lubricate them. An inner peripheral part of the movable sheave 5b and an outer peripheral part of the shaft part 13 are respectively provided with lock surfaces 5e, 13b axially facing each other, and a seal member S sandwiched between the lock surfaces 5e, 13b to achieve a liquid-tight state between the movable sheave 5b and the shaft part 13 and thereby to enclose the hydraulic pressure in the hydraulic chamber 5c when the movable sheave 5b gets closer to the fixed sheave 5a is disposed between the lock surfaces 5e, 13b. <P>COPYRIGHT: (C)2011,JPO&INPIT |
