| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a strap band device 1 for connection such that a pier part 11 increases in bending strength and the pier part 11 is improved in durability against contact pressure generated when spiral teeth 9a engages the pier part 11 during an operation to rotate a screw rod 9.SOLUTION: A tooth train part 8 is constituted by providing a bridge-lie beam side part 10 that spiral teeth 9a engage between adjacent slits 8a, and the beam side part 10 constitutes a pier part 11 which is hollowed by curving and deforming so as to have a thin groove 10a along a length direction P. Sectional secondary moment of the pier part 11 in a peripheral direction R of the strap band 3 increases, and the pier part 11 increases in rigidity against bending deformation force received from the spiral teeth 9a as the operation to rotate the screw rod 9 is performed, thereby maintaining strong fastening force for a connection hose.</p> |
