| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To set a load in a desired valve opening load (the valve opening load when opening a valve), even when a variation is caused in a shape of a torsion coil spring. <P>SOLUTION: This exhaust flow passage control device 10 has a housing 30 for forming an exhaust flow passage, a valve element 20 for opening and closing the exhaust flow passage of the housing, a coil part arranged on the anti-housing side of the valve element and winding a spring stranded wire in a coil shape, and an arm arranged on both ends of the coil part. The coil part is arranged so that its winding axis becomes substantially parallel to a valve element surface in the substantial center of the valve element, and has the torsion coil spring 40 for energizing the valve element to the closing side by deflective reaction of the coil part, and a spring installing member 12 for slidingly supporting the arm of the torsion coil spring in its axial direction. An installing position of the spring installing member to the housing can be adjusted so that a turning angle of the arm can be changed when the valve element exists in a closing position. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
