| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ultrasonic welding method which securely ensures a sealed joining process and an ultrasonic welding device. <P>SOLUTION: Both an upper case 21 and a lower case 22 are joined together by ultrasonic welding while pressing a member 25 with damping function from the side to the specified points P and Q of the lower case 22 to be welded by ultrasonic wave. <P>COPYRIGHT: (C)2004,JPO |
