| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a flexible tube which can be prevented surely from being bent with a curvature larger than a set maximum central curvature. <P>SOLUTION: In a groove 16 defined by both parallel walls 14 and the sidewall 15 at adjacent fitting portions 12 when a profile 11 is wound, a pair of stop protrusions 17 and 18 engaging with respective locking portions 19 and 20 formed at the edge 14b of both parallel walls 14 are formed at the distal end 13a of a neck portion 13 inserted slidably along the depth direction of the groove in order to prevent the neck portion 13 from slipping out of the groove 16. Length dimension d of each stop protrusion 17, 18 along the sliding direction of the neck portion 13 from the side face 17b, 18b on the fitting portion 12 side of each stop protrusion 17, 18 is set as long as possible within a range for allowing slide of the neck portion 13 in the groove 16. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
