| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a capacitor which can realize highly reliable adjustment of gas pressure with a simple structure, as well as a long service life through the adjustment of gas within a container. SOLUTION: A gate cylinder (18) is provided to a container filled with a gas which is communicated with an outside air, and it is covered with a cap (26) to a block a gate hole (20), and then the pressure of a gas on the gate hole is applied to the inner side of the cap through a gas purging part (notch part 22 and through hole 24), thereby purging the gas to the outside air through a clearance between the cap and gate cylinder. Thus, the gas can be purged in accordance with an increase of inner pressure of gas without reducing the sealing of the container, and furthermore a highly reliable adjustment of pressure, avoiding bursting, and a long service life of a capacitor can be also realized.</p> |
