| 摘要 |
PROBLEM TO BE SOLVED: To easily manage the gap S between a ferrule 11 and a fixation part 10 which clamps and fixes the flank of the ferrule 11 from both the sides. SOLUTION: The ferrule 11 has a clamping-fixed part 18, clamped and fixed by the fixation part 10, formed flatly. At the flat part, the fixation part 10 and ferrule 11 are fixed by welding. The gap S between the ferrule 11 and fixation part 10 is easier to control when the clamping-fixed part 18 is thus formed flatly than when the clamping-fixed part 18 is curved. Consequently, the gap S between the ferrule 11 and fixation part 10 can be sized almost as set and the fixation strength between the ferrule 11 and fixation part 10 by the welding can be stabilized.
|
