| 摘要 |
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 5 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 5. This pressure control valve consists of a rubber cylindrical valve body 6 provided with an engaging portion 6a engaged with a hole 5a of the terminal plate 5 and also provided with a tapered portion 6c on the top end of its internal circumferential surface, a gas permeable sheet 7 for sealing a hole of this valve body 6 and a lid-shaped cap 8 arranged on the valve body 6. The valve body 6 is held in a compressed state by fitting an engaging portion 8a of the cap 8 into an engaging portion 5c of 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 |
