| 摘要 |
PURPOSE:To improve the shrinkage force of an insulating gasket while it is being sealed and obtain good resistance to leakage by forming a tapered section on the external end face of a metal support body. CONSTITUTION:A metal support body 17 loaded on the step 154 of a gasket 15 forms a tapered section 17a on the external end face at an angle of 40 to 50 deg.. In addition, the gasket 15, a collector rod 16, the metal support body 17, and a cathode sealing plate 18 are integrated by loading the cathode sealing plate 18 that secures the collector rod 16 on the support body 17 by welding and such. In this status, after the enlarged opening of a metal can 11 is tightened in the radial direction and is reduced diametrically, the opening section of the metal can 11 is bent inside through the folding protruded wall 155 of the gasket 15 and is sealed by pressing the upper part of the sealing plate 18. As a result, pressing force is applied to the tapered section 17a of the metal support 17 through the insulating gasket 15 and forcing force is generated in the opening direction and then shrinkage force is improved remarkably by the folding protruded wall 155 of the gasket 15. |
