| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a metal bellows-type accumulator in which plucking and permanent setting are prevented from occurring due to the structure wherein a valve element is compressed to be sealed when a so-called zero-down is caused, and sealing performance of the valve element is improved by stopping outflow of at least a specified amount of pressurized liquid from a liquid chamber which causes a deformation of the metal bellows. <P>SOLUTION: The accumulator includes a shell 2 having an attachment part 23 at one end and a gas-plug 21 fixed at the other end, the metal bellows 3 which keeps one end fixed on the side of the attachment part 23 and the other end connected to a bellows cap 31 to demarcate the inside of the shell 2 into a gas chamber 11 and the liquid chamber 12, an oil-port 4 which keeps a seal-holder 42, provided on the side of the liquid chamber 12 of the metal bellows 3, connected to the inside periphery, and a lip-seal 5 which is fitted to the outside periphery of the seal-holder 42 to be attached to a groove 41 formed in the oil port 4. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
