CAPACITOR

• Main Authors: SHIMAMOTO HIDEKI, SAKATA MOTOHIRO, MIURA TERUHISA, KAMIOKA KOJI, KAWASAKI SHUSAKU
• Format: Patent
• Language: English
• Published: 08.02.2007
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

PROBLEM TO BE SOLVED: To provide a highly reliable capacitor by solving the problem that an electrolyte for driving easily leaks from a pressure control valve, with respect to a capacitor to be used for an automobile etc. SOLUTION: The capacitor comprises a metal case housing a capacitor element together with the electrolyte for driving and having an internal bottom surface joined to one electrode, and a terminal plate having an internal surface joined to the other electrode of the capacitor element and sealing an opening of the metal case. A pressure control value also used as a hole 5a for pouring the electrolyte for driving is provided on this terminal plate. This pressure control valve consists of a ring-like elastic member 6, a gas permeable sheet 7 joined to the top surface, a rubber valve body 8 formed in a ring shape having a taper 8a with the top end of an internal circumferential surface expanding toward a direction of an external circumferential surface and provided thereon and a cap 9 for housing these and holding the valve portion 8 in a compressed state. The elastic member 6 is forced into a wall portion 5b provided on the terminal plate 5. With this configuration, the highly reliable capacitor eliminating the leakage of the electrolyte for driving can be achieved. COPYRIGHT: (C)2007,JPO&INPIT