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A bladder-type accumulator includes a hollow housing having an inner wall surface including a cylindrical surface of a predetermined width, a sheet-like elastically flexible bladder disposed in the hollow housing and dividing an interior space of the hollow housing into a first fluid chamber and a s

A bladder-type accumulator includes a hollow housing having an inner wall surface including a cylindrical surface of a predetermined width, a sheet-like elastically flexible bladder disposed in the hollow housing and dividing an interior space of the hollow housing into a first fluid chamber and a second fluid chamber and a holder which holds a peripheral edge of the bladder against the cylindrical surface of the hollow housing. The peripheral edge of the bladder is shaped such that a relatively large pressure will be applied to at least a partial annular area, having a predetermined width, of the bladder along the peripheral edge thereof.

대표청구항 ▼

An accumulator comprising: a hollow housing having an inner wall surface including an inner cylindrical surface of a predetermined width; an elastically flexible bladder sheet disposed in said hollow housing and dividing an interior space of the hollow housing into a first fluid chamber to be filled

An accumulator comprising: a hollow housing having an inner wall surface including an inner cylindrical surface of a predetermined width; an elastically flexible bladder sheet disposed in said hollow housing and dividing an interior space of the hollow housing into a first fluid chamber to be filled with gases and a second fluid chamber to be filled with liquids; a holder which holds a peripheral edge of said bladder against the inner cylindrical surface of said hollow housing such that a relatively large pressure will be applied to at least a partial annular area, having a predetermined width, of said bladder along said peripheral edge thereof; said holder having at least a tubular portion including an outer cylindrical surface in parallel with the inner cylindrical surface of said hollow housing; said bladder sheet having a laminated layer assembly including a first rubber layer facing into said first fluid chamber with a peripheral edge substantially confronting the outer cylindrical surface of said tubular portion, a second rubber layer facing into said second fluid chamber with a peripheral edge confronting the inner cylindrical surface of said hollow housing, and an intermediate gas-impermeable layer sandwiched between said first and second layers; an annular ridge (27, 111, 119) being provided in at least one of an annular confronting region between the peripheral edge of said first rubber layer and the outer cylindrical surface of said tubular portion or an annular confronting annular region between the peripheral edge of said second rubber layer and the inner cylindrical surface of said hollow housing such that said at least one of the peripheral edges of said first and second rubber layers is partly pressed under compression against its corresponding confronting cylindrical surface by said holder; and a peripheral edge of said intermediate gas-impermeable layer is located closer to the first fluid chamber than the location of said annular ridge (27, 111, 119).