| 摘要 |
PURPOSE:To make the promotion of improvement for the liquid leak-proof, with a terminal prevented from deformation, by using a ring-shape gasket, for a purpose of sealing, previously formed into a tapered shape with its wall thickness widened downward. CONSTITUTION:In the interior hermetically sealed by a round-shape anode can 8, with a nickel plating applied to a steel, a round dish-shape cathode terminal 7, made of clad material of copper-stainless nickel, and a ring-shape gasket 9, is housed a electric generating element consisting of an anode 10, cathode 11 and a separator 12. This ring-shape gasket 9, previously engaged to be secured to a peripheral edge part 7a of the cathode terminal 7, is engaged to be inserted into an opening 8a of the anode can 8. At this time, a wall thickness of the gasket 9 is previously formed into a tapered pattern spreading downward. It is preferable for an angle theta of this taper to be set to between 2 and 8 degrees. |
