| 摘要 |
PURPOSE:To enhance the efficiency of assembly work on the safety valve of a sealed lead-acid battery, by providing a buffer material and a rubber-sheet-like valve for closing a gas outlet port, in the recess of the upper portion of the jar of the battery, and closing the recess with a push plate formed integrally with the jar. CONSTITUTION:A recess 6 is provided in the top of the jar 1 of a sealed lead- acid battery. A flat valve seat 7 having a gas outlet port 5 is provided at the bottom of the recess 6. A rubber-sheet-like flat valve 4 for hermetically closing the gas outlet port 5 and a buffer material 3 for elastically and uniformly pushing the flat valve are housed in the recess 6. The jar 1 of the battery is integrally formed with a push plate 2 whose thickness is made smaller at the attached butt portion 9 thereof than the other portion thereof so that the attached butt portion can be easily bent. The top of the buffer material 3 is then covered with the push plate 2 and pressed thereby so that the push plate is secured at the step of the upper portion of the recess 6 to constitute a safety valve. The efficiency of assembly work is thus enhanced greatly to reduce the cost thereof. |
