| 摘要 |
<p>PURPOSE: To lessen a variable electronic part in number of parts and production man-hours by a method wherein a connecting pipe is formed in one piece with a rotor member and inserted into a through-hole provided to an insulating board, and an input electrode is fixed to the lower end of the connecting pipe by caulking. CONSTITUTION: A resistive film 24 nearly U-shaped in plane view is formed by coating on the upside of a ceramic insulating board 23 provided with a through-hole 22 opened to both its sides, surrounding the through-hole 22. A metal rotor member 26 ring-shaped in plane view and provided with a bearing part 25 against the resistive film 24 is provided, and furthermore an input electrode 27 is fixed by caulking to the lower end of a connecting shaft 28 formed in one piece with the rotor member 26 at its center by drawing. A side electrode 29 is provided to the one end of the resistive film 24, and a resistance between the side electrode 29 and the input electrode 27 is controlled by rotating the rotor member 26.</p> |
