Position detecting device for fluid pressure cylinder

摘要

A sensor holding member holding a position sensor and an attachment member that attaches the sensor holding member to a cylinder tube are formed separately. The sensor holding member is placed with a sensor attachment groove oriented in the direction of the axis of the cylinder tube and in contact with the outer surface of the cylinder tube. The attachment member is placed so as to straddle the sensor holding member. By tightening an attachment screw and fixing the attachment member with an attachment band, the sensor holding member is pressed against and fixed to the outer surface of the cylinder tube by the attachment member. Loosening the attachment screw allows the sensor holding member to be displaced relative to the attachment member in the direction of the axis of the cylinder tube.

主权项

1. A position detecting device for a fluid pressure cylinder, comprising: a position sensor that detects the position of a piston of a fluid pressure cylinder; a sensor holder that position-adjustably holds the position sensor; and an attachment band that attaches the sensor holder to the outer periphery of the fluid pressure cylinder,
wherein the attachment band has a band main body surrounding the outer periphery of the fluid pressure cylinder and a pair of clamping portions formed at respective opposite ends of the band main body so as to face each other, wherein the sensor holder includes a sensor holding member having a sensor attachment groove in which the position sensor fits and an attachment member clamped between the pair of clamping portions of the attachment band, and the sensor holding member and the attachment member are formed separately, and wherein the sensor attachment groove is oriented in the direction of the axis of the fluid pressure cylinder, with the sensor holding member in contact with the outer surface of the fluid pressure cylinder, wherein the sensor holding member is fitted in a fitting groove in the lower surface of the attachment member, so as to be straddled by the attachment member, the attachment member and the sensor holding member are fixed to each other by tightening an attachment screw and fixing the attachment member between the clamping portions, and loosening the attachment screw allows the sensor holding member to be displaced relative to the attachment member in the direction of the axis of the fluid pressure cylinder.