| 摘要 |
<p>PURPOSE:To facilitate the insertion of lead extension parts into through holes of a circuit board without causing any step difference and burr regardless of a slip in cutting position by forming lead extension parts using a coupling band. CONSTITUTION:Recessions 16, 17 are previously provided on both side edges of regions of a coupling band 5 of leads 2-4. The coupling band 5 is cut- removed so that both side edges 20a, 20b of extension parts 2a-4a may be positioned between the extension lines of both side edges 18a, 18b of the narrow width parts 18 and the other extension lines of both edges 19a, 19b of the wide width parts 19 adjacent to the narrow width parts 18 when the extension parts 2a-4a of leads 2-4 are formed. At this time, the recessions 16, 17 prevent a step difference or a burring from occurring due to the position slip in case of cutting the coupling band 5. Furthermore, both side edges 20a, 20b of extension 2a-4a can be prevented from taking positions outside the extension of both side edges 19a, 19b of the wide width parts 19 of leads.</p> |
