| 摘要 |
This signal line 6 is installed between the inner circumferential surface of a jacket tube 2 and outer circumferential portions of a hard part 4 and a soft part 5. The installed signal line 6 comprises an installation structure with a spiral section 6b that starts at an electrical connection section 6a on the outer circumference of the hard part 4 and is helically wound around the hard part 4 and the soft part 5. The spiral section 6b reduces tension or compression bending stress applied to the signal line 6 and prevents the line from breaking when the soft part 5 is bent. |
