| 摘要 |
PURPOSE:To prevent a printed board from being inserted to a position other than a specific position by inserting and fixing a small outer diameter of cylindrical projections to holes for jack contact responding to holes for plug contact of a coaxial connector at the jack side. CONSTITUTION:In a coaxial connector 3 for jack mounted in parallel to a backboard printed board 1 to be fitted to a coaxial connector 4 at the plug side mounted on a printed board 2, cylindrical projection bodies 50 with the outer diameter smaller than the bore of holes 42 are inserted in jack contact holes 32 responding to the holes 42 for plug contact. As a result, when the printed board 2 is inserted at a specific position, the connector 4 is pluged in to the connector 3 on the printed board 1 with no trouble. But, when a printed board 2B different from the printed board to be inserted is tried to the connector 3 by mistake, plug contacts 45 inserted in the holes 42 of the connector 4 strike the projection bodies 50. Consequently, the connector 4 is prevented to plug in to the connector 3, and there is no fear of short-circuiting the circuit in the printed board, or hurting mounting parts. |
