| 摘要 |
An instantly welded antenna of which a helical coil is positioned on an end face of a metallic seat member thereof; the metallic seat member and the helical coil are put into a matched inner blind hole of a plastic insulating sleeve. A heated surface provided on the metallic seat member can be heated instantly. The peripheral surface of the metallic seat member and the inside surface of the matched inner blind hole of the insulating sleeve is used as a heat conductive welding surface to weld the metallic seat member and the insulating sleeve, and the helical coil is positioned therein. Thus, the core diameter, the pitch and the overall length of the helix coil can be maintained, not only the inferiority of products is lowered, but also the processing efficiency of the products is increased.
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