| 摘要 |
PURPOSE:To prevent the leakage of an electrolyte by forming a circumference edge of the U type portion of a lid caulked by the edge of an end portion of the main body through a packing so that the thickness of the outer circumference side may be thicker than that of the inner circumference side, thereby increasing the strength in the caulking process. CONSTITUTION:In a silver oxide battery, an anode agency substance 2 and a cathode agency substance 4 are housed in an anode case 1 and a lid 5 having U type sectional portions 6 at the edge of the circumference are provided thereon, said anode dase 1 being sealed by caulking the edge of the end portion thereof through a packing 7. Further, the lid 5 is performed a bending and a raising work around the outer circumference thereof by a punch 22 and a die 23 to a plank 21, and then the press is performed with a punch 27 and a knockout 28. Accordingly, the bending and raising portion 24 becomes thicker than the inner circumference side in thickness and occurs a work hardening. Therefore, the chaulking can be performed with a sufficient strength and the leakage of the electrolyte can be securely prevented. |
