| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage to and deterioration of a through-hole and a circuit therearound when a connector pin is mounted/demounted on/from a printed board if it is mounted on the printed board for connecting signals between a circuit on the printed board and an external circuit. SOLUTION: A connector pin 10 has an insert 12 to be inserted into a through-hole in a printed board surface and a protrusion 14 to be protruded from the printed board surface when the insert 12 is inserted in the through-hole. The protrusion 14 is formed as a male screw portion for threading a connector member at the end of a connection cable connected to an external circuit. The insert 12 is formed with a spirally protruded portion 12b in a threaded shape on the peripheral face of a cylindrical portion 12a. The outer diameter D2 of the insert 12 measured at the top of the spirally protruded portion is larger than the inner diameter of the through-hole and the minor diameter D1 of the insert 12 measured at the valley of the spirally protruded portion is smaller than the inner diameter of the through-hole. |
