| 摘要 |
PURPOSE:To dispense with any soldering in electrical connection as well as to improve the extent of reliability without adding excessive heat and force to each part by installing a spring structural part in terminal area of a through hole in a printed circuit board. CONSTITUTION:A spring structural part 1 is installed in a terminal area of a through hole in a printed circuit board, whereby electrical connection is carried out by force spreading in both directions in a through hole inner wall 2. Since an electrical part terminal has a spring structure like this, no soldering is required for setting electrical parts, therefore the electrical connection is made performable only each part is inserted. And, when these parts are replaced, there is no removal of the soldering but it is merely pulled out. Consequently, such a possibility that excessive heat and force are added to the through hole and a pattern of the board and these electrical parts is brought to nothing. With this constitution, work is simplified and simultaneously reliability is thus improved. |
