| 摘要 |
An accumulator including a membrane having a membrane cap with wave patterns or several membranes is provided to absorb an instantaneous pressure change of working oil. A membrane has a membrane cap(6). In the membrane cap, wave patterns are formed on a contact surface of the membrane and such membranes are mounted to an accumulator. A membrane(9) which does not have a membrane cap and omits a hole for installation of a membrane cap at a central portion thereof is mounted. An impact absorbing pad(10) is inserted between the membranes or a gas such as nitrogen gas or working oil is filled between membranes. |
