| 摘要 |
[PROBLEM TO BE SOLVED] To specify motion range of piston 110 in air cylinder 100 with high accuracy. [MEANS FOR SOLVING THE PROBLEM] Position detecting devices 1a and 1b respectively comprise
Hall IC switching on/off of output of electrical signal depending on relative position to magnet 140 placed so that moving direction of piston 110 crosses at right angle to the boundary of magnetic poles and
resin covering said Hall IC while positioning it inside,
Hall IC of the first position detecting device switches on/off of the output by magnetic force from a first magnetic pole and
Hall IC of the second position detecting device switches on/off of the output by magnetic force from a second magnetic pole.
The position detecting device 1b is mounted on the north pole side of the magnet 140 and the position detecting device 1a is mounted on the north pole side of the magnet 140. |
