When the operation of the accumulator is resumed, the medium pressure required to boost the closing means is reduced, and the life of the bladder is improved."Solution means"Bra 3Equipped withIn an accumulator in which a hydraulic chamber and a pressure chamber are provided in a main body portion by a bladderBody sectionThe hydraulic side connection part 6 andClosure means 8 andAndThe hydraulic side connection part 6 isFirst contact surface 13 andDrain and drain hole 7AndClosure meansOpening and closing hole 7 for opening and closing is provided.The second abutting surface 11 is provided to be able to abut against the first abutment surface 13.An abutting area reducing portion 14 is provided in at least one of the first abutting surface 13 and the second abutment surfaceWhen closing hole 7 is closed by closure meansContact area reducing portionIt is provided so as to be capable of communicating with the hole 7 for supplying the drain.Diagram
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