| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe detachment preventive metal piece with a self-alignment action which prevents components from being loosened and is easily manufactured, and a connection arm fitting structure. SOLUTION: A pipe detachment preventive device 25 fits two-split pieces 32 and 34 to a joint part to expandably and flexibly connect a pipe 31 and a pipe 33 to each other, and connects them to each other by a connection arm 35, and prevents detachment of the pipes from each other. A flange 38 and a recessed portion 39 are provided on joining end face parts on one side of two-split metal pieces 32A and 32B, and 34A and 34B, and an H-shaped connection pin 26 is engaged across the recessed portions 39. The two-split metal pieces are openable/closable around the connection pin 26. The other sides of the two-split metal pieces are tightened by a bolt 36 and a nut 37. COPYRIGHT: (C)2004,JPO&NCIPI
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