| 摘要 |
<p>Abstract: [PROBLEMS] To adjust increase/decrease in valve clearance automatically. [MEANS FOR SOLVING PROBLEMS] A mechanical adjuster comprises a housing (12) having threaded portions (24, 26), a threaded member (14) screw coupled with the threaded portion (24), a threaded member (16) coupled with the threaded member (14) through mutual rotation preventing joints (32, 38) and screw coupled with the threaded portion (26), a resilient member (18) for urging the threaded members (14, 16) in the direction separating from each other, and a resilient member (20) for urging the threaded member (16) with a force in the direction for bringing it close to the threaded member (14). When a load acting on the threaded member (14) is not larger than the valve closing load, valve clearance is reduced by integral rotation of the threaded members (14, 16) with the self support torque of the threaded member (16) smaller than the slip torque of the threaded member (14). When a load acting on the threaded member (14) is close to the valve open load or exceeds the valve open load, valve clearance is increased by integral rotation of the threaded members (14, 16) with the self support torque of the threaded member (16) smaller than the absolute value of slip torque of the threaded member (14).</p> |
