Sealed type battery with its electrolyte pouring opening easily to be sealed

Application Number: 00108359
Application Date: 2000.03.16
Publication Number: 1268777
Publication Date: 2000.10.04
Priority Information: 1999/3/17 JP 71864/99
International: H01M2/36
Applicant(s) Name: Sany Denki K. K.
Inventor(s) Name: Miyasaki Tokuyuki;Yamauchi Yasuhiro
Patent Agency Code: 72001
Patent Agent: huang lihang
Abstract A sealed battery has a generator element enclosed within an external casing. An opening in the external casing is covered by a closure cap in which an injection hole for injecting electrolyte is provided. The injection hole is sealed using a sealing plug which is composed of a support member that is fixed on a surface of the closure cap so as to cover the injection hole and a plugging member that is at least partially formed of an elastic material and is supported by the support member so as to plug the injection hole. The plugging member is formed of an elastic material and is pressed into the injection hole by the support member. As a result, an airtight seal can be easily and securely achieved for the injection hole. The support member can be made large to facilitate handling, thereby reducing the likelihood of the sealing plug being improperly supplied during attachment to the injection hole.