| 摘要 |
In a piston unit (18) of a fluid pressure cylinder (10), a plurality of magnets (122) are disposed through holes (120) provided in a ring body (100). The magnets (122) are disposed in facing relation to detection sensors (92) that are mounted on connecting rods (88), and are provided in the same quantity as the connecting rods (88). Further, a guide rod (124) extending from a head cover (14) to a rod cover (16) is inserted through the interior of the ring body (100). When the piston unit (18) is displaced along the cylinder tube (12), rotational displacement is restricted by the piston unit (18) being displaced along the guide rod (124), whereby the magnets (122) are retained so as to face toward the connecting rods (88) at all times. Therefore, the position of the piston unit (18) is detected by the detection sensors (92) through the magnets (122). |
