| 摘要 |
The lifetime of an electrolytic capacitor is improved while restraining the number of parts for releasing internal gas. A pressure valve 10 of the present invention is made of gas-permeable flexible material, and an actuation portion 11 and a supporter 12 are formed integrally with each other. The actuation portion 11 includes a thin portion 11a and a thick portion 11b provided in an outer region of the thin portion 11a and having a thickness greater than that of the thin portion 11a. When viewed from the direction of the thickness of the actuation portion 11, the thin portion 11a has a cross-like shape, and the outer edge of the thin portion 11a is shaped to include a plurality of first arcs a1 each protruding toward the inside of the thin portion 11a, and a plurality of second arcs a2 each protruding toward the outside of the thin portion 11a. |
