| 摘要 |
A transformer or inductor bobbin (2) having pins (24) of a rectangular cross-section with complementarily profiled ends (24A, 24B), of which one (24A) is tapered and the other (24B) has a recess (24E). The rectangular cross-section allows the pins to offer greater resistance to bending in the direction of their cross-section's greater dimension (for pulling winding wire from the pins), while offering easier bending in the direction of their cross-section's greater dimension (for clinching to a printed circuit board). The use of pins having complementary profiles at their opposite ends allows the pins to be separated simply and efficiently from a length of material with no material wastage, and the provision of a taper at one end of a pin and a recess at the other end allows easy insertion of the tapered end into a pre-formed printed circuit board hole while the recessed end provides for collection of scraped material during pin insertion into an undersized hole (22) in the bobbin. The undersized hole (22) is open at its top, allowing "out-gassing" of otherwise trapped air during soldering.
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