| 摘要 |
PURPOSE:To simplify a shape and eliminate a need for size precision and to reduce weight and facilitate disassembly by intercoupling the two half parts of a two-division bearing through a fastener of a shape memory alloy in a sectional shape having a lock part. CONSTITUTION:A half part 2 in a shape wherein the cylinder of a bearing is divided into two sections by a cutter having width W is formed and the two half parts 2 are intercoupled through a fastener 5 of shape memory alloy. Length L between the circular section parts 6 of the fastener 5 is stored as a length L1 at an ordinary atmosphere temperature and a length L2 shorter than the length L1 at a low temperature. Further, when during disassembly, the fastener 5 is cooled, the length is contacted to the L2, the fasteners are easily pulled out from the two half parts 2 and the two half-parts 2 are removed from the bearing case 8. This constitution simplifies a shape and eliminates a need for high size precision, and facilitates reduction of weight and disassembly. |
