| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a small diameter and light weight of a fastening bolt by reducing bending load applied to the fastening bolt. <P>SOLUTION: A shaft hole 8 engaged with a shaft member 13 and a cut/split groove 9 opened to the shaft hole 8 are provided. First and second arm parts 10, 11 extending from a peripheral edge of the shaft hole 8 to the outer side in a radial direction are provided at both side positions of the cut/split groove 9. A bolt insertion hole 15 crossing to the cut/split groove 9 is formed on the first arm part 10 and a screw hole 16 crossing to the cut/split groove 9 is formed on the second arm part 11. The fastening bolt 17 is inserted from the bolt insertion hole 15 of the first arm part 10 and is fastened to the screw hole 16 of the second arm part 11. The shaft hole 8 is diameter-contracted and the shaft member 13 is fastened/fixed. A spherical recession part 19 is formed on the first arm part 10 and a spherical projection part 21 slidably engaged with the recession part 19 is formed on a washer 20 attached to the fastening bolt 17. <P>COPYRIGHT: (C)2007,JPO&INPIT |
