| 摘要 |
A spring chamber (17) is formed above a piston (11) inserted into a housing (7), and the spring chamber (17) is communicated with an outside of the housing (7) through a breathing passage (41). A pressurized fluid is supplied to and discharged from an actuation chamber (18) formed below the piston (11). A clamping member (4) connected to the piston (11) is urged to a clamping position (X) by a clamping spring (21) within the spring chamber (17). A check valve seat (45) and a check valve chamber (46) are arranged orderly in the breathing passage (41). A checking member (47) within the check valve chamber (46) is pushed to the check valve seat (45) by a checking spring (48) for valve closing.
|
