| 摘要 |
PURPOSE:To prevent a crank shaft from being bulged by providing cut-up sections on the outer periphery of a pipe covering blades in the crank shaft forming compressor elements. CONSTITUTION:Cut-up sections 14 are provided on the outer periphery of a pipe 13 constituting the oil feeder of a compressor. The outer diameter of the cut-up sections 14 is made slightly larger than the inner diameter of a crank shaft 5. When the pipe 13 is pressed into the crank shaft 5 and fixed, the cut-up sections 14 are deformed along the inner diameter of the crank shaft 5, and the deforming force is distributed to places not in contact with the inner diameter of the crank shaft 5 of the pipe 13. Accordingly, the crank shaft is prevented from being bulged.
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