| 摘要 |
PURPOSE:To completely close a case housing a piezoelectric resonator with metallic caps, by providing metallic films for soldering at the peripheral surfaces of both end sections of the case in such a way that the metallic films are protruded outward longer than the fitting depths of the metallic caps and sealing the spaces between the edges of the metallic caps fit on both ends of the case and the metallic films by soldering. CONSTITUTION:An energy-enclosed type piezoelectric resonator element 12 is housed in a cylindrical case 11 and metallic caps 13 fit on both end sections of the cylindrical case 11 are electrically connected with the electrodes 15 of the piezoelectric resonator element 12 by means of a conductive paint 14 and, at the same time, fixed to the case 11. At the outer peripheral surfaces of the both end sections of the cylindrical case 11, metallic films 16 are provided by using a solderable material, such as silver, etc., and the spaces between the edges of the metallic caps 13 and metallic films 16 are sealed by solder 17. The spaces between the metallic films 16 and metallic caps 13 are sealed by solder 17 at sections which are protruded from the metallic caps 13 fit on the case 11. Therefore, closely fitted faces are obtained and, because of the sealing with the solder 17, the case is completely closed.
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