Pressure valve for electrolytic capacitor, and electrolytic capacitor using same
AssigneeNichicon Corporation
InventorTakeshi Yasuzaka
Life of this patent
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Abstract
A pressure valve is made of gas-permeable flexible material, and an actuation portion and a supporter are formed integrally with each other. The actuation portion includes a thin portion and a thick portion provided in an outer region of the thin portion and having a thickness greater than that of the thin portion. When viewed from the direction of the thickness of the actuation portion, the thin portion has a cross-like shape, and the outer edge of the thin portion is shaped to include a plurality of first arcs each protruding toward the inside of the thin portion, and a plurality of second arcs each protruding toward the outside of the thin portion.
Claims7
A pressure valve for an electrolytic capacitor, the pressure valve provided to a sealing member which seals a case accommodating a capacitor element in the electrolytic capacitor, the pressure valve configured to release gas generated in the case,
- the pressure valve comprising an actuation portion including a thin portion and a thick portion which is provided in an outer region of the thin portion and has a thickness greater than that of the thin portion, wherein:
- in the actuation portion, at least the thin portion is made of gas-permeable material;
- and
- when viewed from a direction of a thickness of the actuation portion, an outer edge of the thin portion is shaped to include a plurality of first arcs each protruding toward an inside of the thin portion.
Dependencies are inferred from the claim text.