| 摘要 |
PURPOSE:To increase the mounting density on a board and to realize a high speed in a compact size by inserting the second contact pin at the inner side of the first contact pin inserted to a through hole from one side of the electron circuit board. CONSTITUTION:A contact pin 4a for mounting on the front surface side has a section of a cotter pin form. And since its outer diameter L1 is a litter larger than the inner diameter L2 of a through hole 2 provided on an electron circuit board 1, the contact pin 4a for mounting on the front surface side can be pressed in to the through hole 2 from the front surface 3a side of the board 1. And a contact pin 4b for mounting on the rear surface side has also a section of a cotter pin form, and since its outer diameter is a little larger than the inner diameter of the contact pin 4a for mounting on the front surface side which is pressed in to the electron circuit board 1, the contact pin 4b for mounting on the rear surface side can be pressed in from the rear surface 3b side of the board into the contact pin 4a for mounting on the front surface side. |
