| 摘要 |
PROBLEM TO BE SOLVED: To appropriately secure the degree of the vacuum inside a product, thus providing stable frequency performance. SOLUTION: For this sealing method, a piezoelectric vibration element, a base 22 for housing the piezoelectric vibration element and a lid part 23 for tightly sealing the base in a state of housing the piezoelectric vibration element in the base are provided and the lid part and the base are tightly sealed. Before tight sealing, in a state of mounting the lid part to the base 22, a gap G is provided] between them. In a sealing process, at least the vicinity of a part to fix the lid part 23 and the base 22 is heated by a heating means and the gap is closed up by a molten metal in the sealing process.
|
