| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the infilltration of rolling oil into this detector as to the detector for detecting whether rolling rolls are in prescribed positions in a rolling mill or not. SOLUTION: As a cap 2 for putting on a proximity switch 1, a through-hole for a lead wire, columnar recessed part, ring-shaped recessed part and tube attaching pipe 7 are provided. The proximity switch 1 is screwed into the columnar recessed part, and also the end face of the proximity switch 1 and the columnar recessed part are closely adhered through an O ring 9. An elastic tube 10 which is fit over the lead wire is fit to the tube attaching pipe 7, an outside screw nut 8 is fit on the elastic tube 10 and also the outer peripheral surface of the outside screw nut 8 is screwed in the outer peripheral surface of the ring-shaped recessed part.</p> |
