Patent ID: 6789576
Filing Date: 2004-09-14
Classification: F15B

Abstract:
An accumulator comprising:a cylindrical shell including a cylindrical portion; a partitioning member for partitioning an interior of the shell into a hydraulic chamber and a gas chamber; and a port including a hydraulic fluid flow path for communicating an exterior of the shell and the hydraulic chamber; wherein variation of pressure of a hydraulic fluid flowing into the hydraulic chamber is accommodated by expansion and compression of a gas in the gas chamber according to expansion and contraction of the partitioning member; the port is approximately airtightly inserted into the cylindrical portion of the shell, and is welded to an outer circumference of the cylindrical portion by means of welding; wherein the shell comprises plural divided shell bodies joined to each other; the partitioning member includes a guide for sliding on an inner surface of the shell so as to guide the expansion and contraction of the partitioning member along an axial direction thereof; and a joined portion between the divided shell bodies is positioned outside the region where the guide moves, and the guide slides within an inner surface of one divided shell body.