| 摘要 |
<p>PROBLEM TO BE SOLVED: To detect not only metallic flat objects, but objects of various materials such as synthetic resin, rubber, etc., and various shapes such as projecting objects, etc. SOLUTION: A rod-like inner conductive member 11 and a cylindrical outer conductive member 16 are set to be relatively slidable via insulating materials 12, 13, 15. The inner conductive member 11 is energized forward by an inner spring 14, thereby projecting a part closer to a leading end of the inner conductive member 11 further from the outer conductive member 16. A flange-like object butt part 11a (contact point) and a cylindrical contact point 16a are set to face each other via a predetermined distance at the leading end (part closer to the leading end) of the inner conductive member 11 and a leading end of the outer conductive member 16. When a voltage is impressed between the inner conductive member 11 and outer conductive member 16 and the object butt part 11a (leading end) of the inner conductive member 11 butts with an object 30 to be detected, the inner conductive member 11 slides to the outer conductive member 16. The object butt part 11a (contact point) comes in touch with the contact 16a and the inner conductive member 11 and outer conductive member 16 are connected, whereby an electric signal or the like is generated.</p> |
