| 摘要 |
A fluid pressure cylinder (2) comprises a rod insertion hole (20) formed in a piston member (4), an auxiliary rod (7) provided to a head side wall member (10B) so as to be inserted into the rod insertion hole (20), an open/shut valve mechanism for detection (11), and a fluid passage (32) that is opened and shut by the open/shut valve mechanism (11); the open/shut valve mechanism (11) includes a valve body reception hole (35) formed in the auxiliary rod (7), a valve body (36) that is movably held in the valve body reception hole (35) and that has a recessed engagement portion (37) on its external peripheral portion, and a spherical body (38) mounted on the auxiliary rod (7) so as to engage with the recessed engagement portion (37); when the piston member (4) has reached a set shifting position, the valve body (36) is changed over to the closed position or to the opened position due to cooperation between the spherical body (38), the recessed engagement portion (37), and the inner peripheral wall portion (39) of the rod insertion hole(20). |
