Patent ID: 8646375
Filing Date: 2014-02-11
Classification: F15B,G01D

Abstract:
1. A fluid pressure cylinder comprising: a piston slidingly moving along the inside of a cylinder bore in the direction of a central axis by the action of fluid pressure; a piston rod connected to the piston; a magnet mounted on the piston; and a position detecting device mounted on an outer surface of a cylinder body with a single attachment bolt so that positioning thereof is possible, wherein the fluid pressure cylinder is configured in such a manner that the position detecting device detects the position of the piston by detecting the magnet, wherein the position detecting device has: a magnetic sensor that senses the magnetism of the magnet; a housing containing the magnetic sensor; an elongated attachment hole formed on the housing with a major axis thereof being parallel to the central axis; a hole cover disposed on an outer surface of the housing in such a manner as to cover the elongated attachment hole; and the single attachment bolt going through the hole cover and the elongated attachment hole, wherein fixation of the housing on the cylinder body and fixation of the hole cover on the housing are simultaneously performed by screwing the single attachment bolt into a screw hole formed on a side surface of the cylinder body.