| 摘要 |
PURPOSE:To improve the ease of production and reliability by forming a pressure release plate with steel plate having suitable V-grooves in which a fuse section that is made of suitable metal and develops from crack to rupture at a predetermined pressure. CONSTITUTION:A groove 5 is formed in a lid 4 made of steel plate that is intended for easily developing a crack when the internal pressure reaches a predetermined pressure. The lid 4 is provided with suitable metal to form a fuse section 7 that develops from crack to rupture under a predetermined pressure, and that makes up a pressure release plate 8. In this manner, the reliability of the pressure release plate 8 is improved, and its ease of production is also improved. |
