| 摘要 |
PROBLEM TO BE SOLVED: To obtain excellent workability, to set the position of a pivot member to each reel with high precision and moreover to secure excellent flatness of an upper reel and a boss part when the upper reel and a lower reel are assembled. SOLUTION: In a pivot member 19, when an upper reel 14 and a lower reel 16 are assembled, a flat plate part 19a is fitted into a recessed groove 13a, an engaging surface 19c is engaged with the recessed groove 13a and also respective welding bosses 17 of the lower reel 16 are respectively fitted into respective through-holes 19d via respective welding boss holes 18 of the upper reel 14, Respective welding bosses 17 are respectively subjected to ultrasonic welding in this state, and whereby the upper reel 14, the lower reel 16 and the pivot member 19 are fixed.
|
