| 摘要 |
An ultrasonic welding structure is provided for a chip body 11 and a lid body 12 to be welded to each other by using ultrasonic waves. The chip body 11 is provided with a welding recess 15 defined by tapered sidewalls 15A, 15A. While, the lid body 12 is provided with a welding projection 17 also defined by tapered sidewalls 17C, 17C, for engagement with the welding recess 15. The chip body 11 and the lid body 12 in their assembled condition are subjected to ultrasonic oscillation characterized by its amplitude direction A. Then, since the welding surfaces of the sidewalls 15A, 17C each has a projected area with respect to the amplitude direction A, the welding surfaces are welded to each other owing to frictional heat resulting from the ultrasonic oscillation. With this welding structure, the chip body 11 is perfectly welded to the lid body 12 by one time of ultrasonic oscillation.
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