Position detection device for fluid pressure cylinder

Abstract

Disclosed is a position detection device for a fluid pressure cylinder. A sensor holding member which holds a position sensor and a mounting member which mounts the sensor holding member on a cylinder tube are formed as separate elements. The sensor holding member is disposed on the cylinder tube so as to be in contact with the outer surface thereof while a sensor mounting groove is oriented in the direction of the axis (L) of the cylinder tube. The mounting member is disposed so as to straddle the sensor holding member and is affixed by a mounting band by tightening a mounting screw. As a result, the sensor holding member is affixed by being pressed by the mounting member against the outer surface of the cylinder tube. Loosening the mounting screw enables the sensor holding member to be displaced in the direction of the axis of the cylinder tube relative to the mounting member.

Description

technical field [0001] The present invention relates to a position detection device for detecting the operating position of a piston of a hydraulic cylinder, and more specifically, to a position detection device of the type in which a position sensor is mounted on a cylinder body using a mounting belt. Background technique [0002] Generally, a hydraulic cylinder is equipped with a position detection device in order to detect the operating position of the piston and use the detection signal as a signal for controlling the hydraulic cylinder. This position detection device is a device for detecting the magnetism of the permanent magnet mounted on the above-mentioned piston by a magnetic induction type position sensor installed on the outer surface of the cylinder. In order to install the position sensor on the outer surface of the cylinder, conventionally used various institutions. [0003] For example, Patent Document 1 discloses a position detection device in which a senso...

AI Technical Summary

Problems solved by technology

[0004] However, in the method of adjusting the position by only moving the position sensor like this position detection device, the degree of freedom of position adjustment is lacking, for example, when there is a restriction on the attachment position of the belt to the cylinder block. , simply by moving the position sensor is not enough and sometimes cannot adequately cope with

[0005] It is also conceivable to adjust the position by moving the sensor holder, but in this case, the sensor holder and the mounting belt must be connected by mounting screws and long holes, and there is a possibility that the sensor holder is likely to grow longer due to vibration, etc. The problem of position offset in the direction of the hole

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