| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastener, capable of integrating two orthogonal members together while preventing the reduction in strength by secular deformation of the members. SOLUTION: The fastener includes a buried shaft 11 to be inserted to a shaft hole 33 extending through side surfaces of a main member 31, an indwelling tool 22 to be embedded in a connecting member 32, and a fastening bolt 21 for integrating the main member 31 to the connecting member 32. The buried shaft 11 includes an inner hole 14 for inserting the fastening bolt 21 and a spiral protruding part 12 formed on the side circumferential surface thereof to be bitten into the main member 31, and the indwelling tool 22 includes an external thread 25 to be screwed with the fastening bolt 21. The fastening bolt 21 inserted through the buried shaft 11 pulls the indwelling tool 22, whereby the connecting member 32 is fastened to the main member 31. Since the load acting on the fastening bolt 21 can be efficiently dispersed by the buried shaft 11, the secular deformation of the members can be prevented. COPYRIGHT: (C)2009,JPO&INPIT
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