| 摘要 |
PROBLEM TO BE SOLVED: To suppress a plosive sound and an impact by releasing a high-pressure gas in an air chamber at proper timing, and properly controlling the release pressure of the high-pressure gas.SOLUTION: In an accumulator 1 having a shell 2, a bellows 5, and a stay self-seal 8 which is arranged at a pressure liquid inlet 61 opened at a liquid chamber 4, and composed of a cylindrical flank part 8a and a lid-shaped head part 8b, the stay self-seal 8 comprises a penetration hole 81 formed at the head part 8b, and a fragile part 9 whose flank part 8a is deformed when the pressure of an air chamber 3 exceeds a prescribed threshold. The fragile part 9 is a groove-shaped recess 91 which is formed along a peripheral direction of the flank part 8a, a bottom face 91b of the recess 91 is a plane, or a circular curved face which is protrusive toward the outside from the inside of the flank part 8a, and both ends 91c of the bottom face 91b in the peripheral direction go through toward an external peripheral face of the flank part 8a.SELECTED DRAWING: Figure 3 |
