| 摘要 |
PURPOSE:To prevent the separation of the pivoting part of a swing blade by a method wherein one end of the swing blade, which is supported pivotally, is notched, the supporting plate and a spring are provided in the blade and the notched part is abutted against the tip end of the supporting plate. CONSTITUTION:A compressor 103 is provided with the supporting plate 1, formed with a knife edge, a spring 2, pushing the notched part 4 of the pivoting part of the swing blade 3, and the blade 5. A pressure applied to the outer peripheral surface 6 of the swing blade 3 in a compression process is received by the notched part 4 thereby enabling to receive it by a line contact. On the other hand, the separation of the swing blade 3 when the tip end 7 of the swing blade 3 approaches to the blade 5 most closely may be prevented by the inner wall surface 8 of the main frame and the supporting plate 1. |
