| 摘要 |
<P>PROBLEM TO BE SOLVED: To check a change in a standard dimension caused by a drop in temperature when a laminate is fastened between end plates in the standard dimension by a shaft. <P>SOLUTION: A fastening shaft 100 includes: a first shaft 110 fixed to one end plate 10a; and a second shaft 130 fixed to the other end plate 10a, wherein a coupling shaft portion 134 is inserted into a closed end hole 116 for superimposing both shafts. A shaft fixing member 120 is disposed in an area where the shafts are superimposed to couple the first shaft 110 and the second shaft 130. The shaft fixing member 120 has a coefficient of thermal expansion β larger than that α of both shafts. As a result, the shaft fixing member 120 largely shrinks during the temperature drop, thereby: reducing the distance between an open-side end face of the first shaft 110 and an open-side end face of the second shaft 130; and extending the distance between an end face of the first shaft 110 on the end plate 10a side and an end face of the second shaft 130. <P>COPYRIGHT: (C)2009,JPO&INPIT |
