HOLE SEALING PLATE AND PRESSURE REGULATING MECHANISM FOR THE HOLE SEALING PLATE

摘要

In order to prevent a pressure container of a battery, a condenser or the like from exploding due to an abnormal increase of a pressure within the pressure container without having a rubber breaking plate with which it is hard to control the breaking pressure, there is provided a breaking plate (7) integrally formed with a resin seal plate main body (2) for closing an opening portion of a pressure container, a thin portion (8) integrally formed between the seal plate main body (2) and the breaking plate (7) and being thinner than the breaking plate (7), and an inclined surface portion (9) formed to be gradually thicker from a thickness of the thin portion (8) and provided in a peripheral edge portion of the breaking plate (7).