Valve for a control muffler

摘要

A valve for a control muffler includes: a valve element (3) which is swingably journaled on a support shaft (5) supported by shaft holes (41a) of a pair of first shaft supporting portions (41) inside the support shaft (5); bushes (6) which are respectively interposed between the support shaft (5) and a pair of second shaft supporting portions (33) that are disposed on the valve element to pivotally support the support shaft (5); and a coil spring (7) which urges the valve element in a valve closing direction. In the valve, a welding rising portion (41b) which protrudes in the axial direction is disposed on an outer opening edge of the shaft hole (41a) of each of the pair of first shaft supporting portions (41), and the support shaft (5) is welded to tip ends of the welding rising portion (41b).