| 摘要 |
PURPOSE:To readily perform the manufacture of a high voltage generator by engaging a retainer with an insulated case and fusion-bonding them with ultrasonic wave. CONSTITUTION:A recess 9 is formed at one end of an insulated case 8, and one end of a piezoelectric unit 11 is exposed at the recess 9. A knurling tool 14 is, for example, provided on the oblique surface 13 of the outside wall of the retainer 12 engaged with the recess 9. Then, the retainer 12 is engaged with the recess 13, an ultrasonic welding machine horn is pressed from the end of the retainer 13, and the retainer 12 is fusion-bonded to the case 7. Thus, it is not necessary to machine threading grooves on the retainer and the case, but the retainer 12 can be merely engaged with the case, and can be welded with ultrasonic wave, and accordingly the manufacture can be readily performed. |
